Bump to v0.1.0-alpha.15

Signed-off-by: Zach Gollwitzer <zach@maybe.co>

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-ARG RUBY_VERSION=3.3.1
+ARG RUBY_VERSION=3.3.4
 FROM ruby:${RUBY_VERSION}-slim-bullseye
 
 RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \

.env.test.example

@@ -0,0 +1,17 @@
+# ================
+# Data Providers
+# ---------------------------------------------------------------------------------
+# Uncomment and fill in live keys when you need to generate a VCR cassette fixture
+# ================
+
+# SYNTH_API_KEY=<add live key here>
+
+# ================
+# Miscellaneous
+# ================
+
+# Set to true if you want SimpleCov reports generated
+COVERAGE=false
+
+# Set to true to run test suite serially
+DISABLE_PARALLELIZATION=false

.github/workflows/ci.yml

@@ -97,7 +97,6 @@ jobs:
 
       - name: System tests
         run: DISABLE_PARALLELIZATION=true bin/rails test:system
-        continue-on-error: true # TODO: Eventually we'll enforce for PRs
 
       - name: Keep screenshots from failed system tests
         uses: actions/upload-artifact@v4

.github/workflows/publish.yml

@@ -58,7 +58,7 @@ jobs:
             type=raw,value=stable,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         id: build
         with:
           context: .

.gitignore

@@ -11,6 +11,7 @@
 /.env*
 !/.env*.erb
 !.env.example
+!.env.test.example
 
 # Ignore all logfiles and tempfiles.
 /log/*
@@ -51,6 +52,9 @@
 # Ignore .devcontainer files
 compose-dev.yaml
 
+# Ignore asdf ruby version file
+.tool-versions
+
 # Ignore GCP keyfile
 gcp-storage-keyfile.json
 

.rubocop.yml

@@ -6,3 +6,7 @@ inherit_gem: { rubocop-rails-omakase: rubocop.yml }
 # # Use `[a, [b, c]]` not `[ a, [ b, c ] ]`
 # Layout/SpaceInsideArrayLiteralBrackets:
 #   Enabled: false
+Layout/ElseAlignment:
+  Enabled: false
+Layout/EndAlignment:
+  Enabled: false

.ruby-version

@@ -1 +1 @@
-3.3.1
+3.3.4

Dockerfile

@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.3.1
+ARG RUBY_VERSION=3.3.4
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
 
 # Rails app lives here

Gemfile

@@ -3,7 +3,7 @@ source "https://rubygems.org"
 ruby file: ".ruby-version"
 
 # Rails
-gem "rails", github: "rails/rails", branch: "7-2-stable"
+gem "rails", "~> 7.2.0"
 
 # Drivers
 gem "pg", "~> 1.5"
@@ -44,6 +44,7 @@ gem "pagy"
 gem "rails-settings-cached"
 gem "tzinfo-data", platforms: %i[ windows jruby ]
 gem "csv"
+gem "redcarpet"
 
 group :development, :test do
   gem "debug", platforms: %i[ mri windows ]
@@ -51,14 +52,15 @@ group :development, :test do
   gem "rubocop-rails-omakase", require: false
   gem "i18n-tasks"
   gem "erb_lint"
+  gem "dotenv-rails"
 end
 
 group :development do
-  gem "dotenv-rails"
   gem "hotwire-livereload"
   gem "letter_opener"
   gem "ruby-lsp-rails"
   gem "web-console"
+  gem "faker"
 end
 
 group :test do

Gemfile.lock

@@ -5,124 +5,97 @@ GIT
     lucide-rails (0.2.0)
       railties (>= 4.1.0)
 
-GIT
-  remote: https://github.com/rails/rails.git
-  revision: 5d34172ff44ec0c88ac03a979679b31e1ed78745
-  branch: 7-2-stable
+GEM
+  remote: https://rubygems.org/
   specs:
-    actioncable (7.2.0.beta2)
-      actionpack (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    actioncable (7.2.0)
+      actionpack (= 7.2.0)
+      activesupport (= 7.2.0)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
       zeitwerk (~> 2.6)
-    actionmailbox (7.2.0.beta2)
-      actionpack (= 7.2.0.beta2)
-      activejob (= 7.2.0.beta2)
-      activerecord (= 7.2.0.beta2)
-      activestorage (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    actionmailbox (7.2.0)
+      actionpack (= 7.2.0)
+      activejob (= 7.2.0)
+      activerecord (= 7.2.0)
+      activestorage (= 7.2.0)
+      activesupport (= 7.2.0)
       mail (>= 2.8.0)
-    actionmailer (7.2.0.beta2)
-      actionpack (= 7.2.0.beta2)
-      actionview (= 7.2.0.beta2)
-      activejob (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    actionmailer (7.2.0)
+      actionpack (= 7.2.0)
+      actionview (= 7.2.0)
+      activejob (= 7.2.0)
+      activesupport (= 7.2.0)
       mail (>= 2.8.0)
       rails-dom-testing (~> 2.2)
-    actionpack (7.2.0.beta2)
-      actionview (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    actionpack (7.2.0)
+      actionview (= 7.2.0)
+      activesupport (= 7.2.0)
       nokogiri (>= 1.8.5)
       racc
-      rack (>= 2.2.4)
+      rack (>= 2.2.4, < 3.2)
       rack-session (>= 1.0.1)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
       useragent (~> 0.16)
-    actiontext (7.2.0.beta2)
-      actionpack (= 7.2.0.beta2)
-      activerecord (= 7.2.0.beta2)
-      activestorage (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    actiontext (7.2.0)
+      actionpack (= 7.2.0)
+      activerecord (= 7.2.0)
+      activestorage (= 7.2.0)
+      activesupport (= 7.2.0)
       globalid (>= 0.6.0)
       nokogiri (>= 1.8.5)
-    actionview (7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    actionview (7.2.0)
+      activesupport (= 7.2.0)
       builder (~> 3.1)
       erubi (~> 1.11)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    activejob (7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    activejob (7.2.0)
+      activesupport (= 7.2.0)
       globalid (>= 0.3.6)
-    activemodel (7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
-    activerecord (7.2.0.beta2)
-      activemodel (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    activemodel (7.2.0)
+      activesupport (= 7.2.0)
+    activerecord (7.2.0)
+      activemodel (= 7.2.0)
+      activesupport (= 7.2.0)
       timeout (>= 0.4.0)
-    activestorage (7.2.0.beta2)
-      actionpack (= 7.2.0.beta2)
-      activejob (= 7.2.0.beta2)
-      activerecord (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
+    activestorage (7.2.0)
+      actionpack (= 7.2.0)
+      activejob (= 7.2.0)
+      activerecord (= 7.2.0)
+      activesupport (= 7.2.0)
       marcel (~> 1.0)
-    activesupport (7.2.0.beta2)
+    activesupport (7.2.0)
       base64
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.3.1)
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
-      logger
+      logger (>= 1.4.2)
       minitest (>= 5.1)
+      securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
-    rails (7.2.0.beta2)
-      actioncable (= 7.2.0.beta2)
-      actionmailbox (= 7.2.0.beta2)
-      actionmailer (= 7.2.0.beta2)
-      actionpack (= 7.2.0.beta2)
-      actiontext (= 7.2.0.beta2)
-      actionview (= 7.2.0.beta2)
-      activejob (= 7.2.0.beta2)
-      activemodel (= 7.2.0.beta2)
-      activerecord (= 7.2.0.beta2)
-      activestorage (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
-      bundler (>= 1.15.0)
-      railties (= 7.2.0.beta2)
-    railties (7.2.0.beta2)
-      actionpack (= 7.2.0.beta2)
-      activesupport (= 7.2.0.beta2)
-      irb (~> 1.13)
-      rackup (>= 1.0.0)
-      rake (>= 12.2)
-      thor (~> 1.0, >= 1.2.2)
-      zeitwerk (~> 2.6)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.2)
     aws-eventstream (1.3.0)
-    aws-partitions (1.944.0)
-    aws-sdk-core (3.197.0)
+    aws-partitions (1.961.0)
+    aws-sdk-core (3.201.3)
       aws-eventstream (~> 1, >= 1.3.0)
       aws-partitions (~> 1, >= 1.651.0)
       aws-sigv4 (~> 1.8)
       jmespath (~> 1, >= 1.6.1)
-    aws-sdk-kms (1.84.0)
-      aws-sdk-core (~> 3, >= 3.197.0)
-      aws-sigv4 (~> 1.1)
-    aws-sdk-s3 (1.152.3)
-      aws-sdk-core (~> 3, >= 3.197.0)
+    aws-sdk-kms (1.88.0)
+      aws-sdk-core (~> 3, >= 3.201.0)
+      aws-sigv4 (~> 1.5)
+    aws-sdk-s3 (1.157.0)
+      aws-sdk-core (~> 3, >= 3.201.0)
       aws-sdk-kms (~> 1)
-      aws-sigv4 (~> 1.8)
-    aws-sigv4 (1.8.0)
+      aws-sigv4 (~> 1.5)
+    aws-sigv4 (1.9.1)
       aws-eventstream (~> 1, >= 1.0.2)
     base64 (0.2.0)
     bcrypt (3.1.20)
@@ -135,7 +108,7 @@ GEM
       smart_properties
     bigdecimal (3.1.8)
     bindex (0.8.1)
-    bootsnap (1.18.3)
+    bootsnap (1.18.4)
       msgpack (~> 1.2)
     brakeman (6.1.2)
       racc
@@ -151,7 +124,7 @@ GEM
       xpath (~> 3.2)
     childprocess (5.0.0)
     climate_control (1.2.0)
-    concurrent-ruby (1.3.3)
+    concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crack (1.0.0)
       bigdecimal
@@ -168,35 +141,43 @@ GEM
       dotenv (= 3.1.2)
       railties (>= 6.1)
     drb (2.2.1)
-    erb_lint (0.5.0)
+    erb_lint (0.6.0)
       activesupport
       better_html (>= 2.0.1)
       parser (>= 2.7.1.4)
       rainbow
-      rubocop
+      rubocop (>= 1)
       smart_properties
     erubi (1.13.0)
     et-orbi (1.2.11)
       tzinfo
-    faraday (2.9.1)
+    faker (3.4.2)
+      i18n (>= 1.8.11, < 2)
+    faraday (2.10.1)
       faraday-net_http (>= 2.0, < 3.2)
-    faraday-net_http (3.1.0)
+      logger
+    faraday-net_http (3.1.1)
       net-http
     faraday-retry (2.2.1)
       faraday (~> 2.0)
-    ffi (1.16.3)
+    ffi (1.17.0-aarch64-linux-gnu)
+    ffi (1.17.0-arm-linux-gnu)
+    ffi (1.17.0-arm64-darwin)
+    ffi (1.17.0-x86-linux-gnu)
+    ffi (1.17.0-x86_64-darwin)
+    ffi (1.17.0-x86_64-linux-gnu)
     fugit (1.11.0)
       et-orbi (~> 1, >= 1.2.11)
       raabro (~> 1.4)
     globalid (1.2.1)
       activesupport (>= 6.1)
-    good_job (3.29.3)
-      activejob (>= 6.0.0)
-      activerecord (>= 6.0.0)
-      concurrent-ruby (>= 1.0.2)
-      fugit (>= 1.1)
-      railties (>= 6.0.0)
-      thor (>= 0.14.1)
+    good_job (4.1.1)
+      activejob (>= 6.1.0)
+      activerecord (>= 6.1.0)
+      concurrent-ruby (>= 1.3.1)
+      fugit (>= 1.11.0)
+      railties (>= 6.1.0)
+      thor (>= 1.0.0)
     hashdiff (1.1.0)
     highline (3.0.1)
     hotwire-livereload (1.4.0)
@@ -215,7 +196,7 @@ GEM
       rails-i18n
       rainbow (>= 2.2.2, < 4.0)
       terminal-table (>= 1.5.1)
-    image_processing (1.12.2)
+    image_processing (1.13.0)
       mini_magick (>= 4.9.5, < 5)
       ruby-vips (>= 2.0.17, < 3)
     importmap-rails (2.0.1)
@@ -226,7 +207,7 @@ GEM
       activesupport (>= 3.0)
       nokogiri (>= 1.6)
     io-console (0.7.2)
-    irb (1.13.2)
+    irb (1.14.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     jmespath (1.6.2)
@@ -251,15 +232,15 @@ GEM
       net-smtp
     marcel (1.0.4)
     matrix (0.4.2)
-    mini_magick (4.12.0)
+    mini_magick (4.13.2)
     mini_mime (1.1.5)
-    minitest (5.23.1)
-    mocha (2.4.0)
+    minitest (5.24.1)
+    mocha (2.4.5)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.2)
     net-http (0.4.1)
       uri
-    net-imap (0.4.13)
+    net-imap (0.4.14)
       date
       net-protocol
     net-pop (0.1.2)
@@ -269,28 +250,28 @@ GEM
     net-smtp (0.5.0)
       net-protocol
     nio4r (2.7.3)
-    nokogiri (1.16.6-aarch64-linux)
+    nokogiri (1.16.7-aarch64-linux)
       racc (~> 1.4)
-    nokogiri (1.16.6-arm-linux)
+    nokogiri (1.16.7-arm-linux)
       racc (~> 1.4)
-    nokogiri (1.16.6-arm64-darwin)
+    nokogiri (1.16.7-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.16.6-x86-linux)
+    nokogiri (1.16.7-x86-linux)
       racc (~> 1.4)
-    nokogiri (1.16.6-x86_64-darwin)
+    nokogiri (1.16.7-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.16.6-x86_64-linux)
+    nokogiri (1.16.7-x86_64-linux)
       racc (~> 1.4)
     octokit (9.1.0)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
-    pagy (8.4.4)
-    parallel (1.24.0)
-    parser (3.3.1.0)
+    pagy (9.0.5)
+    parallel (1.25.1)
+    parser (3.3.4.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.6)
-    prism (0.29.0)
+    pg (1.5.7)
+    prism (0.30.0)
     propshaft (0.9.0)
       actionpack (>= 7.0.0)
       activesupport (>= 7.0.0)
@@ -302,8 +283,8 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     raabro (1.4.0)
-    racc (1.8.0)
-    rack (3.1.3)
+    racc (1.8.1)
+    rack (3.1.7)
     rack-session (2.0.0)
       rack (>= 3.0.0)
     rack-test (2.1.0)
@@ -311,6 +292,20 @@ GEM
     rackup (2.1.0)
       rack (>= 3)
       webrick (~> 1.8)
+    rails (7.2.0)
+      actioncable (= 7.2.0)
+      actionmailbox (= 7.2.0)
+      actionmailer (= 7.2.0)
+      actionpack (= 7.2.0)
+      actiontext (= 7.2.0)
+      actionview (= 7.2.0)
+      activejob (= 7.2.0)
+      activemodel (= 7.2.0)
+      activerecord (= 7.2.0)
+      activestorage (= 7.2.0)
+      activesupport (= 7.2.0)
+      bundler (>= 1.15.0)
+      railties (= 7.2.0)
     rails-dom-testing (2.2.0)
       activesupport (>= 5.0.0)
       minitest
@@ -324,25 +319,36 @@ GEM
     rails-settings-cached (2.9.4)
       activerecord (>= 5.0.0)
       railties (>= 5.0.0)
+    railties (7.2.0)
+      actionpack (= 7.2.0)
+      activesupport (= 7.2.0)
+      irb (~> 1.13)
+      rackup (>= 1.0.0)
+      rake (>= 12.2)
+      thor (~> 1.0, >= 1.2.2)
+      zeitwerk (~> 2.6)
     rainbow (3.1.1)
     rake (13.2.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
+    rbs (3.5.2)
+      logger
     rdoc (6.7.0)
       psych (>= 4.0.0)
+    redcarpet (3.6.0)
     regexp_parser (2.9.2)
     reline (0.5.9)
       io-console (~> 0.5)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
-    rubocop (1.63.5)
+    rexml (3.3.4)
+      strscan
+    rubocop (1.65.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
+      regexp_parser (>= 2.4, < 3.0)
       rexml (>= 3.2.5, < 4.0)
       rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
@@ -365,29 +371,33 @@ GEM
       rubocop-minitest
       rubocop-performance
       rubocop-rails
-    ruby-lsp (0.17.1)
+    ruby-lsp (0.17.12)
       language_server-protocol (~> 3.17.0)
-      prism (>= 0.29.0, < 0.30)
+      prism (>= 0.29.0, < 0.31)
+      rbs (>= 3, < 4)
       sorbet-runtime (>= 0.5.10782)
-    ruby-lsp-rails (0.3.7)
-      ruby-lsp (>= 0.17.0, < 0.18.0)
+    ruby-lsp-rails (0.3.12)
+      ruby-lsp (>= 0.17.12, < 0.18.0)
     ruby-progressbar (1.13.0)
-    ruby-vips (2.2.1)
+    ruby-vips (2.2.2)
       ffi (~> 1.12)
+      logger
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
-    selenium-webdriver (4.21.1)
+    securerandom (0.3.1)
+    selenium-webdriver (4.23.0)
       base64 (~> 0.2)
+      logger (~> 1.4)
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
-    sentry-rails (5.17.3)
+    sentry-rails (5.18.2)
       railties (>= 5.0)
-      sentry-ruby (~> 5.17.3)
-    sentry-ruby (5.17.3)
+      sentry-ruby (~> 5.18.2)
+    sentry-ruby (5.18.2)
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
     simplecov (0.22.0)
@@ -397,29 +407,29 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
     smart_properties (1.17.0)
-    sorbet-runtime (0.5.11406)
+    sorbet-runtime (0.5.11518)
     stackprof (0.2.26)
     stimulus-rails (1.3.3)
       railties (>= 6.0.0)
     stringio (3.1.1)
     strscan (3.1.0)
-    tailwindcss-rails (2.6.1)
+    tailwindcss-rails (2.7.2)
       railties (>= 7.0.0)
-    tailwindcss-rails (2.6.1-aarch64-linux)
+    tailwindcss-rails (2.7.2-aarch64-linux)
       railties (>= 7.0.0)
-    tailwindcss-rails (2.6.1-arm-linux)
+    tailwindcss-rails (2.7.2-arm-linux)
       railties (>= 7.0.0)
-    tailwindcss-rails (2.6.1-arm64-darwin)
+    tailwindcss-rails (2.7.2-arm64-darwin)
       railties (>= 7.0.0)
-    tailwindcss-rails (2.6.1-x86_64-darwin)
+    tailwindcss-rails (2.7.2-x86_64-darwin)
       railties (>= 7.0.0)
-    tailwindcss-rails (2.6.1-x86_64-linux)
+    tailwindcss-rails (2.7.2-x86_64-linux)
       railties (>= 7.0.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     thor (1.3.1)
     timeout (0.4.1)
-    turbo-rails (2.0.5)
+    turbo-rails (2.0.6)
       actionpack (>= 6.0.0)
       activejob (>= 6.0.0)
       railties (>= 6.0.0)
@@ -439,13 +449,13 @@ GEM
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
     webrick (1.8.1)
-    websocket (1.2.10)
+    websocket (1.2.11)
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.6.16)
+    zeitwerk (2.6.17)
 
 PLATFORMS
   aarch64-linux
@@ -466,6 +476,7 @@ DEPENDENCIES
   debug
   dotenv-rails
   erb_lint
+  faker
   faraday
   faraday-retry
   good_job
@@ -482,8 +493,9 @@ DEPENDENCIES
   pg (~> 1.5)
   propshaft
   puma (>= 5.0)
-  rails!
+  rails (~> 7.2.0)
   rails-settings-cached
+  redcarpet
   rubocop-rails-omakase
   ruby-lsp-rails
   selenium-webdriver
@@ -500,7 +512,7 @@ DEPENDENCIES
   webmock
 
 RUBY VERSION
-   ruby 3.3.1p55
+   ruby 3.3.4p94
 
 BUNDLED WITH
    2.5.9

README.md

@@ -42,7 +42,7 @@ The instructions below are for developers to get started with contributing to th
 
 ### Requirements
 
-- Ruby 3.3.1
+- Ruby 3.3.4
 - PostgreSQL >9.3 (ideally, latest stable version)
 
 After cloning the repo, the basic setup commands are:

app/assets/stylesheets/application.tailwind.css

@@ -4,27 +4,27 @@
 
 /* Reset rules, default styles applied to plain HTML */
 @layer base {
-  details > summary::-webkit-details-marker {
+  details>summary::-webkit-details-marker {
     @apply hidden;
   }
 
-  details > summary {
+  details>summary {
     @apply list-none;
   }
 }
 
 @layer components {
   .form-field {
-    @apply relative rounded-md border bg-white border-alpha-black-100 shadow-xs;
+    @apply flex flex-col gap-1 relative px-3 py-2 rounded-md border bg-white border-alpha-black-100 shadow-xs w-full;
     @apply focus-within:border-gray-900 focus-within:shadow-none focus-within:ring-4 focus-within:ring-gray-100;
   }
 
   .form-field__label {
-    @apply block px-3 pt-2 pb-0 text-xs text-gray-500;
+    @apply block text-xs text-gray-500;
   }
 
   .form-field__input {
-    @apply w-full border-none bg-transparent px-3 pt-1 pb-2 text-sm opacity-100;
+    @apply border-none bg-transparent text-sm opacity-100 w-full p-0;
     @apply focus:opacity-100 focus:outline-none focus:ring-0;
     @apply placeholder-shown:opacity-50;
     @apply disabled:opacity-50;
@@ -38,7 +38,7 @@
     @apply w-full cursor-pointer rounded-lg bg-black p-3 text-center text-white hover:bg-gray-700;
   }
 
-  input:checked + label + .toggle-switch-dot {
+  input:checked+label+.toggle-switch-dot {
     transform: translateX(100%);
   }
 
@@ -58,6 +58,19 @@
     background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='111827' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e");
   }
 
+  select[multiple="multiple"] {
+    @apply py-2 pr-2 space-y-0.5;
+  }
+
+  select[multiple="multiple"] option {
+    @apply p-2 rounded-md;
+  }
+
+  select[multiple="multiple"] option:checked {
+    @apply bg-gray-50;
+    @apply after:content-['\2713'] after:float-right after:text-gray-500;
+  }
+
   .maybe-switch {
     @apply block bg-gray-100 w-9 h-5 rounded-full cursor-pointer;
     @apply after:content-[''] after:block after:absolute after:top-0.5 after:left-0.5 after:bg-white after:w-4 after:h-4 after:rounded-full after:transition-transform after:duration-300 after:ease-in-out;
@@ -77,6 +90,10 @@
       @apply font-bold;
     }
   }
+
+  .tooltip {
+    @apply hidden absolute;
+  }
 }
 
 /* Small, single purpose classes that should take precedence over other styles */

app/controllers/account/cashes_controller.rb

@@ -0,0 +1,14 @@
+class Account::CashesController < ApplicationController
+  layout :with_sidebar
+
+  before_action :set_account
+
+  def index
+  end
+
+  private
+
+    def set_account
+      @account = Current.family.accounts.find(params[:account_id])
+    end
+end

app/controllers/account/entries_controller.rb

@@ -0,0 +1,48 @@
+class Account::EntriesController < ApplicationController
+  layout :with_sidebar
+
+  before_action :set_account
+  before_action :set_entry, only: %i[ edit update show destroy ]
+
+  def edit
+    render entryable_view_path(:edit)
+  end
+
+  def update
+    @entry.update!(entry_params)
+    @entry.sync_account_later
+
+    respond_to do |format|
+      format.html { redirect_to account_entry_path(@account, @entry), notice: t(".success") }
+      format.turbo_stream { render turbo_stream: turbo_stream.replace(@entry) }
+    end
+  end
+
+  def show
+    render entryable_view_path(:show)
+  end
+
+  def destroy
+    @entry.destroy!
+    @entry.sync_account_later
+    redirect_back_or_to account_url(@entry.account), notice: t(".success")
+  end
+
+  private
+
+    def entryable_view_path(action)
+      @entry.entryable_type.underscore.pluralize + "/" + action.to_s
+    end
+
+    def set_account
+      @account = Current.family.accounts.find(params[:account_id])
+    end
+
+    def set_entry
+      @entry = @account.entries.find(params[:id])
+    end
+
+    def entry_params
+      params.require(:account_entry).permit(:name, :date, :amount, :currency)
+    end
+end

app/controllers/account/holdings_controller.rb

@@ -0,0 +1,23 @@
+class Account::HoldingsController < ApplicationController
+  layout :with_sidebar
+
+  before_action :set_account
+  before_action :set_holding, only: :show
+
+  def index
+    @holdings = @account.holdings.current
+  end
+
+  def show
+  end
+
+  private
+
+    def set_account
+      @account = Current.family.accounts.find(params[:account_id])
+    end
+
+    def set_holding
+      @holding = @account.holdings.current.find(params[:id])
+    end
+end

app/controllers/account/trades_controller.rb

@@ -0,0 +1,37 @@
+class Account::TradesController < ApplicationController
+  layout :with_sidebar
+
+  before_action :set_account
+
+  def new
+    @entry = @account.entries.account_trades.new(entryable_attributes: {})
+  end
+
+  def index
+    @entries = @account.entries.reverse_chronological.where(entryable_type: %w[ Account::Trade Account::Transaction ])
+  end
+
+  def create
+    @builder = Account::EntryBuilder.new(entry_params)
+
+    if entry = @builder.save
+      entry.sync_account_later
+      redirect_to account_path(@account), notice: t(".success")
+    else
+      flash[:alert] = t(".failure")
+      redirect_back_or_to account_path(@account)
+    end
+  end
+
+  private
+
+    def set_account
+      @account = Current.family.accounts.find(params[:account_id])
+    end
+
+    def entry_params
+      params.require(:account_entry)
+            .permit(:type, :date, :qty, :ticker, :price, :amount, :currency, :transfer_account_id)
+            .merge(account: @account)
+    end
+end

app/controllers/account/transactions_controller.rb

@@ -0,0 +1,56 @@
+class Account::TransactionsController < ApplicationController
+  layout :with_sidebar
+
+  before_action :set_account
+  before_action :set_entry, only: :update
+
+  def index
+    @pagy, @entries = pagy(
+      @account.entries.account_transactions.reverse_chronological,
+      limit: params[:per_page] || "10"
+    )
+  end
+
+  def update
+    @entry.update!(entry_params.merge(amount: amount))
+    @entry.sync_account_later
+
+    respond_to do |format|
+      format.html { redirect_to account_entry_path(@account, @entry), notice: t(".success") }
+      format.turbo_stream { render turbo_stream: turbo_stream.replace(@entry) }
+    end
+  end
+
+  private
+
+    def set_account
+      @account = Current.family.accounts.find(params[:account_id])
+    end
+
+    def set_entry
+      @entry = @account.entries.find(params[:id])
+    end
+
+    def entry_params
+      params.require(:account_entry)
+            .permit(
+              :name, :date, :amount, :currency, :entryable_type,
+              entryable_attributes: [
+                :id,
+                :notes,
+                :excluded,
+                :category_id,
+                :merchant_id,
+                { tag_ids: [] }
+              ]
+            )
+    end
+
+    def amount
+      if params[:account_entry][:nature] == "income"
+        entry_params[:amount].to_d * -1
+      else
+        entry_params[:amount].to_d
+      end
+    end
+end

app/controllers/account/transfers_controller.rb

@@ -1,5 +1,5 @@
 class Account::TransfersController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   before_action :set_transfer, only: :destroy
 
@@ -18,11 +18,12 @@ class Account::TransfersController < ApplicationController
                                              name: transfer_params[:name]
 
     if @transfer.save
+      @transfer.entries.each(&:sync_account_later)
       redirect_to transactions_path, notice: t(".success")
     else
       # TODO: this is not an ideal way to handle errors and should eventually be improved.
       # See: https://github.com/hotwired/turbo-rails/pull/367
-      flash[:error] = @transfer.errors.full_messages.to_sentence
+      flash[:alert] = @transfer.errors.full_messages.to_sentence
       redirect_to transactions_path
     end
   end

app/controllers/account/valuations_controller.rb

@@ -1,48 +1,26 @@
 class Account::ValuationsController < ApplicationController
+  layout :with_sidebar
+
   before_action :set_account
-  before_action :set_valuation, only: %i[ show edit update destroy ]
 
   def new
-    @valuation = @account.valuations.new
-  end
-
-  def show
+    @entry = @account.entries.account_valuations.new(entryable_attributes: {})
   end
 
   def create
-    @valuation = @account.valuations.build(valuation_params)
+    @entry = @account.entries.account_valuations.new(entry_params.merge(entryable_attributes: {}))
 
-    if @valuation.save
-      @valuation.sync_account_later
-      redirect_to account_path(@account), notice: "Valuation created"
+    if @entry.save
+      @entry.sync_account_later
+      redirect_to account_valuations_path(@account), notice: t(".success")
     else
-      # TODO: this is not an ideal way to handle errors and should eventually be improved.
-      # See: https://github.com/hotwired/turbo-rails/pull/367
-      flash[:error] = @valuation.errors.full_messages.to_sentence
+      flash[:alert] = @entry.errors.full_messages.to_sentence
       redirect_to account_path(@account)
     end
   end
 
-  def edit
-  end
-
-  def update
-    if @valuation.update(valuation_params)
-      @valuation.sync_account_later
-      redirect_to account_path(@account), notice: t(".success")
-    else
-      # TODO: this is not an ideal way to handle errors and should eventually be improved.
-      # See: https://github.com/hotwired/turbo-rails/pull/367
-      flash[:error] = @valuation.errors.full_messages.to_sentence
-      redirect_to account_path(@account)
-    end
-  end
-
-  def destroy
-    @valuation.destroy!
-    @valuation.sync_account_later
-
-    redirect_to account_path(@account), notice: t(".success")
+  def index
+    @entries = @account.entries.account_valuations.reverse_chronological
   end
 
   private
@@ -51,11 +29,7 @@ class Account::ValuationsController < ApplicationController
       @account = Current.family.accounts.find(params[:account_id])
     end
 
-    def set_valuation
-      @valuation = @account.valuations.find(params[:id])
-    end
-
-    def valuation_params
-      params.require(:account_valuation).permit(:date, :value, :currency)
+    def entry_params
+      params.require(:account_entry).permit(:name, :date, :amount, :currency)
     end
 end

app/controllers/accounts_controller.rb

@@ -1,9 +1,8 @@
 class AccountsController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   include Filterable
   before_action :set_account, only: %i[ edit show destroy sync update ]
-  after_action :sync_account, only: :create
 
   def index
     @institutions = Current.family.institutions
@@ -20,13 +19,11 @@ class AccountsController < ApplicationController
   end
 
   def list
+    render layout: false
   end
 
   def new
-    @account = Account.new(
-      balance: nil,
-      accountable: Accountable.from_type(params[:type])&.new
-    )
+    @account = Account.new(accountable: Accountable.from_type(params[:type])&.new)
 
     if params[:institution_id]
       @account.institution = Current.family.institutions.find_by(id: params[:institution_id])
@@ -34,14 +31,19 @@ class AccountsController < ApplicationController
   end
 
   def show
-    @balance_series = @account.series(period: @period)
+    @series = @account.series(period: @period)
+    @trend = @series.trend
   end
 
   def edit
   end
 
   def update
-    @account.update! account_params.except(:accountable_type)
+    Account.transaction do
+      @account.update! account_params.except(:accountable_type, :balance)
+      @account.update_balance!(account_params[:balance]) if account_params[:balance]
+    end
+    @account.sync_later
     redirect_back_or_to account_path(@account), notice: t(".success")
   end
 
@@ -52,8 +54,10 @@ class AccountsController < ApplicationController
                         attributes: account_params.except(:start_date, :start_balance),
                         start_date: account_params[:start_date],
                         start_balance: account_params[:start_balance]
-
+    @account.sync_later
     redirect_back_or_to account_path(@account), notice: t(".success")
+  rescue ActiveRecord::RecordInvalid => e
+    redirect_back_or_to accounts_path, alert: e.record.errors.full_messages.to_sentence
   end
 
   def destroy
@@ -65,8 +69,11 @@ class AccountsController < ApplicationController
     unless @account.syncing?
       @account.sync_later
     end
+  end
 
-    redirect_to account_path(@account), notice: t(".success")
+  def sync_all
+    Current.family.accounts.active.sync
+    redirect_back_or_to accounts_path, notice: t(".success")
   end
 
   private
@@ -78,8 +85,4 @@ class AccountsController < ApplicationController
     def account_params
       params.require(:account).permit(:name, :accountable_type, :balance, :start_date, :start_balance, :currency, :subtype, :is_active, :institution_id)
     end
-
-    def sync_account
-      @account.sync_later
-    end
 end

app/controllers/application_controller.rb

@@ -1,9 +1,15 @@
 class ApplicationController < ActionController::Base
-  include Authentication, Invitable, SelfHostable
+  include AutoSync, Authentication, Invitable, SelfHostable
   include Pagy::Backend
 
-  default_form_builder ApplicationFormBuilder
-
   # Only allow modern browsers supporting webp images, web push, badges, import maps, CSS nesting, and CSS :has.
   allow_browser versions: :modern
+
+  private
+
+    def with_sidebar
+      return "turbo_rails/frame" if turbo_frame_request?
+
+      "with_sidebar"
+    end
 end

app/controllers/categories_controller.rb

@@ -1,5 +1,5 @@
 class CategoriesController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   before_action :set_category, only: %i[ edit update ]
   before_action :set_transaction, only: :create

app/controllers/category/deletions_controller.rb

@@ -1,5 +1,5 @@
 class Category::DeletionsController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   before_action :set_category
   before_action :set_replacement_category, only: :create

app/controllers/concerns/authentication.rb

@@ -3,13 +3,11 @@ module Authentication
 
   included do
     before_action :authenticate_user!
-    after_action :set_last_login_at, if: -> { Current.user }
   end
 
   class_methods do
     def skip_authentication(**options)
       skip_before_action :authenticate_user!, **options
-      skip_after_action :set_last_login_at, **options
     end
   end
 
@@ -27,6 +25,7 @@ module Authentication
     Current.user = user
     reset_session
     session[:user_id] = user.id
+    set_last_login_at
   end
 
   def logout

app/controllers/concerns/auto_sync.rb

@@ -0,0 +1,13 @@
+module AutoSync
+  extend ActiveSupport::Concern
+
+  included do
+    before_action :sync_family, if: -> { Current.family.present? && Current.family.needs_sync? }
+  end
+
+  private
+
+    def sync_family
+      Current.family.sync
+    end
+end

app/controllers/currencies_controller.rb

@@ -1,6 +1,6 @@
 class CurrenciesController < ApplicationController
   def show
-    @currency = Money::Currency.all_instances.find { |currency| currency.iso_code == params[:id] }
-    render json: { step: @currency.step, placeholder: Money.new(0, @currency).format }
+    currency = Money::Currency.all_instances.find { |currency| currency.iso_code == params[:id] }
+    render json: currency.as_json.merge({ step: currency.step })
   end
 end

app/controllers/help/articles_controller.rb

@@ -0,0 +1,11 @@
+class Help::ArticlesController < ApplicationController
+  layout :with_sidebar
+
+  def show
+    @article = Help::Article.find(params[:id])
+
+    unless @article
+      head :not_found
+    end
+  end
+end

app/controllers/imports_controller.rb

@@ -18,14 +18,14 @@ class ImportsController < ApplicationController
 
   def update
     account = Current.family.accounts.find(params[:import][:account_id])
+    @import.update! account: account, col_sep: params[:import][:col_sep]
 
-    @import.update! account: account
     redirect_to load_import_path(@import), notice: t(".import_updated")
   end
 
   def create
     account = Current.family.accounts.find(params[:import][:account_id])
-    @import = Import.create!(account: account)
+    @import = Import.create! account: account, col_sep: params[:import][:col_sep]
 
     redirect_to load_import_path(@import), notice: t(".import_created")
   end
@@ -38,11 +38,26 @@ class ImportsController < ApplicationController
   def load
   end
 
+  def upload_csv
+    begin
+      @import.raw_csv_str = import_params[:raw_csv_str].read
+    rescue NoMethodError
+      flash.now[:alert] = "Please select a file to upload"
+      render :load, status: :unprocessable_entity and return
+    end
+    if @import.save
+      redirect_to configure_import_path(@import), notice: t(".import_loaded")
+    else
+      flash.now[:alert] = @import.errors.full_messages.to_sentence
+      render :load, status: :unprocessable_entity
+    end
+  end
+
   def load_csv
     if @import.update(import_params)
       redirect_to configure_import_path(@import), notice: t(".import_loaded")
     else
-      flash.now[:error] = @import.errors.full_messages.to_sentence
+      flash.now[:alert] = @import.errors.full_messages.to_sentence
       render :load, status: :unprocessable_entity
     end
   end

app/controllers/issue/exchange_rate_provider_missings_controller.rb

@@ -0,0 +1,19 @@
+class Issue::ExchangeRateProviderMissingsController < ApplicationController
+  before_action :set_issue, only: :update
+
+  def update
+    Setting.synth_api_key = exchange_rate_params[:synth_api_key]
+    @issue.issuable.sync_later
+    redirect_back_or_to account_path(@issue.issuable)
+  end
+
+  private
+
+    def set_issue
+      @issue = Current.family.issues.find(params[:id])
+    end
+
+    def exchange_rate_params
+      params.require(:issue_exchange_rate_provider_missing).permit(:synth_api_key)
+    end
+end

app/controllers/issues_controller.rb

@@ -0,0 +1,13 @@
+class IssuesController < ApplicationController
+  before_action :set_issue, only: :show
+
+  def show
+    render template: "#{@issue.class.name.underscore.pluralize}/show", layout: "issues"
+  end
+
+  private
+
+    def set_issue
+      @issue = Current.family.issues.find(params[:id])
+    end
+end

app/controllers/merchants_controller.rb

@@ -1,5 +1,5 @@
 class MerchantsController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   before_action :set_merchant, only: %i[ edit update destroy ]
 

app/controllers/pages_controller.rb

@@ -1,5 +1,5 @@
 class PagesController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   include Filterable
 
@@ -21,7 +21,7 @@ class PagesController < ApplicationController
 
     @accounts = Current.family.accounts
     @account_groups = @accounts.by_group(period: @period, currency: Current.family.currency)
-    @transactions = Current.family.transactions.limit(5).order(date: :desc)
+    @transaction_entries = Current.family.entries.account_transactions.limit(6).reverse_chronological
 
     # TODO: Placeholders for trendlines
     placeholder_series_data = 10.times.map do |i|

app/controllers/settings/hostings_controller.rb

@@ -19,7 +19,7 @@ class Settings::HostingsController < SettingsController
 
   def send_test_email
     unless Setting.smtp_settings_populated?
-      flash[:error] = t(".missing_smtp_setting_error")
+      flash[:alert] = t(".missing_smtp_setting_error")
       render(:show, status: :unprocessable_entity)
       return
     end
@@ -27,7 +27,7 @@ class Settings::HostingsController < SettingsController
     begin
       NotificationMailer.with(user: Current.user).test_email.deliver_now
     rescue => _e
-      flash[:error] = t(".error")
+      flash[:alert] = t(".error")
       render :show, status: :unprocessable_entity
       return
     end

app/controllers/settings/profiles_controller.rb

@@ -17,7 +17,7 @@ class Settings::ProfilesController < SettingsController
     if Current.user.update(user_params_with_family)
       redirect_to settings_profile_path, notice: t(".success")
     else
-      redirect_to settings_profile_path, alert: t(".file_size_error")
+      redirect_to settings_profile_path, alert: Current.user.errors.full_messages.to_sentence
     end
   end
 

app/controllers/settings_controller.rb

@@ -1,3 +1,3 @@
 class SettingsController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 end

app/controllers/tag/deletions_controller.rb

@@ -1,5 +1,5 @@
 class Tag::DeletionsController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   before_action :set_tag
   before_action :set_replacement_tag, only: :create

app/controllers/tags_controller.rb

@@ -1,5 +1,5 @@
 class TagsController < ApplicationController
-  layout "with_sidebar"
+  layout :with_sidebar
 
   before_action :set_tag, only: %i[ edit update ]
 

app/controllers/transaction/rows_controller.rb

@@ -1,22 +0,0 @@
-class Transaction::RowsController < ApplicationController
-  before_action :set_transaction, only: %i[ show update ]
-
-  def show
-  end
-
-  def update
-    @transaction.update! transaction_params
-
-    redirect_to transaction_row_path(@transaction)
-  end
-
-  private
-
-    def transaction_params
-      params.require(:transaction).permit(:category_id)
-    end
-
-    def set_transaction
-      @transaction = Current.family.transactions.find(params[:id])
-    end
-end

app/controllers/transaction/rules_controller.rb

@@ -1,6 +0,0 @@
-class Transaction::RulesController < ApplicationController
-  layout "with_sidebar"
-
-  def index
-  end
-end

app/controllers/transactions_controller.rb

@@ -1,12 +1,10 @@
 class TransactionsController < ApplicationController
-  layout "with_sidebar"
-
-  before_action :set_transaction, only: %i[ show edit update destroy ]
+  layout :with_sidebar
 
   def index
     @q = search_params
-    result = Current.family.transactions.search(@q).ordered
-    @pagy, @transactions = pagy(result, items: params[:per_page] || "10")
+    result = Current.family.entries.account_transactions.search(@q).reverse_chronological
+    @pagy, @transaction_entries = pagy(result, limit: params[:per_page] || "50")
 
     @totals = {
       count: result.select { |t| t.currency == Current.family.currency }.count,
@@ -15,45 +13,27 @@ class TransactionsController < ApplicationController
     }
   end
 
-  def show
-  end
-
   def new
-    @transaction = Transaction.new.tap do |txn|
+    @entry = Current.family.entries.new(entryable: Account::Transaction.new).tap do |e|
       if params[:account_id]
-        txn.account = Current.family.accounts.find(params[:account_id])
+        e.account = Current.family.accounts.find(params[:account_id])
       end
     end
   end
 
-  def edit
-  end
-
   def create
-    @transaction = Current.family.accounts
-                     .find(params[:transaction][:account_id])
-                     .transactions.build(transaction_params.merge(amount: amount))
+    @entry = Current.family
+                    .accounts
+                    .find(params[:account_entry][:account_id])
+                    .entries
+                    .create!(transaction_entry_params.merge(amount: amount))
 
-    @transaction.save!
-    @transaction.sync_account_later
-    redirect_to transactions_url, notice: t(".success")
-  end
-
-  def update
-    @transaction.update! transaction_params
-    @transaction.sync_account_later
-
-    redirect_to transaction_url(@transaction), notice: t(".success")
-  end
-
-  def destroy
-    @transaction.destroy!
-    @transaction.sync_account_later
-    redirect_to transactions_url, notice: t(".success")
+    @entry.sync_account_later
+    redirect_back_or_to account_path(@entry.account), notice: t(".success")
   end
 
   def bulk_delete
-    destroyed = Current.family.transactions.destroy_by(id: bulk_delete_params[:transaction_ids])
+    destroyed = Current.family.entries.destroy_by(id: bulk_delete_params[:entry_ids])
     redirect_back_or_to transactions_url, notice: t(".success", count: destroyed.count)
   end
 
@@ -61,19 +41,18 @@ class TransactionsController < ApplicationController
   end
 
   def bulk_update
-    transactions = Current.family.transactions.where(id: bulk_update_params[:transaction_ids])
-    if transactions.update_all(bulk_update_params.except(:transaction_ids).to_h.compact_blank!)
-      redirect_back_or_to transactions_url, notice: t(".success", count: transactions.count)
-    else
-      flash.now[:error] = t(".failure")
-      render :index, status: :unprocessable_entity
-    end
+    updated = Current.family
+                     .entries
+                     .where(id: bulk_update_params[:entry_ids])
+                     .bulk_update!(bulk_update_params)
+
+    redirect_back_or_to transactions_url, notice: t(".success", count: updated)
   end
 
   def mark_transfers
     Current.family
-           .transactions
-           .where(id: bulk_update_params[:transaction_ids])
+      .entries
+      .where(id: bulk_update_params[:entry_ids])
            .mark_transfers!
 
     redirect_back_or_to transactions_url, notice: t(".success")
@@ -81,44 +60,45 @@ class TransactionsController < ApplicationController
 
   def unmark_transfers
     Current.family
-           .transactions
-           .where(id: bulk_update_params[:transaction_ids])
+      .entries
+      .where(id: bulk_update_params[:entry_ids])
            .update_all marked_as_transfer: false
 
     redirect_back_or_to transactions_url, notice: t(".success")
   end
 
-  private
+  def rules
+  end
 
-    def set_transaction
-      @transaction = Current.family.transactions.find(params[:id])
-    end
+  private
 
     def amount
       if nature.income?
-        transaction_params[:amount].to_d * -1
+        transaction_entry_params[:amount].to_d * -1
       else
-        transaction_params[:amount].to_d
+        transaction_entry_params[:amount].to_d
       end
     end
 
     def nature
-      params[:transaction][:nature].to_s.inquiry
+      params[:account_entry][:nature].to_s.inquiry
     end
 
     def bulk_delete_params
-      params.require(:bulk_delete).permit(transaction_ids: [])
+      params.require(:bulk_delete).permit(entry_ids: [])
     end
 
     def bulk_update_params
-      params.require(:bulk_update).permit(:date, :notes, :excluded, :category_id, :merchant_id, transaction_ids: [])
+      params.require(:bulk_update).permit(:date, :notes, :category_id, :merchant_id, entry_ids: [])
     end
 
     def search_params
       params.fetch(:q, {}).permit(:start_date, :end_date, :search, accounts: [], account_ids: [], categories: [], merchants: [])
     end
 
-    def transaction_params
-      params.require(:transaction).permit(:name, :date, :amount, :currency, :notes, :excluded, :category_id, :merchant_id, tag_ids: [])
+    def transaction_entry_params
+      params.require(:account_entry)
+            .permit(:name, :date, :amount, :currency, :entryable_type, entryable_attributes: [ :category_id ])
+            .with_defaults(entryable_type: "Account::Transaction", entryable_attributes: {})
     end
 end

app/helpers/account/cashes_helper.rb

@@ -0,0 +1,13 @@
+module Account::CashesHelper
+  def brokerage_cash(account)
+    currency = Money::Currency.new(account.currency)
+
+    account.holdings.build \
+      date: Date.current,
+      qty: account.balance,
+      price: 1,
+      amount: account.balance,
+      currency: account.currency,
+      security: Security.new(ticker: currency.iso_code, name: currency.name)
+  end
+end

app/helpers/account/entries_helper.rb

@@ -0,0 +1,61 @@
+module Account::EntriesHelper
+  def permitted_entryable_partial_path(entry, relative_partial_path)
+    "account/entries/entryables/#{permitted_entryable_key(entry)}/#{relative_partial_path}"
+  end
+
+  def unconfirmed_transfer?(entry)
+    entry.marked_as_transfer? && entry.transfer.nil?
+  end
+
+  def transfer_entries(entries)
+    transfers = entries.select { |e| e.transfer_id.present? }
+    transfers.map(&:transfer).uniq
+  end
+
+  def entry_icon(entry, is_oldest: false)
+    if is_oldest
+      "keyboard"
+    elsif entry.trend.direction.up?
+      "arrow-up"
+    elsif entry.trend.direction.down?
+      "arrow-down"
+    else
+      "minus"
+    end
+  end
+
+  def entry_style(entry, is_oldest: false)
+    color = is_oldest ? "#D444F1" : entry.trend.color
+
+    mixed_hex_styles(color)
+  end
+
+  def entry_name(entry)
+    if entry.account_trade?
+      trade     = entry.account_trade
+      prefix    = trade.sell? ? "Sell " : "Buy "
+      generated = prefix + "#{trade.qty.abs} shares of #{trade.security.ticker}"
+      name      = entry.name || generated
+      name
+    else
+      entry.name || "Transaction"
+    end
+  end
+
+  def entries_by_date(entries, selectable: true)
+    entries.group_by(&:date).map do |date, grouped_entries|
+      content = capture do
+        yield grouped_entries
+      end
+
+      render partial: "account/entries/entry_group", locals: { date:, entries: grouped_entries, content:, selectable: }
+    end.join.html_safe
+  end
+
+  private
+
+    def permitted_entryable_key(entry)
+      permitted_entryable_paths = %w[transaction valuation trade]
+      entry.entryable_name_short.presence_in(permitted_entryable_paths)
+    end
+end

app/helpers/account/valuations_helper.rb

@@ -1,23 +0,0 @@
-module Account::ValuationsHelper
-  def valuation_icon(valuation)
-    if valuation.first_of_series?
-      "keyboard"
-    elsif valuation.trend.direction.up?
-      "arrow-up"
-    elsif valuation.trend.direction.down?
-      "arrow-down"
-    else
-      "minus"
-    end
-  end
-
-  def valuation_style(valuation)
-    color = valuation.first_of_series? ? "#D444F1" : valuation.trend.color
-
-    <<-STYLE.strip
-      background-color: color-mix(in srgb, #{color} 5%, white);
-      border-color: color-mix(in srgb, #{color} 10%, white);
-      color: #{color};
-    STYLE
-  end
-end

app/helpers/accounts_helper.rb

@@ -23,18 +23,38 @@ module AccountsHelper
     class_mapping(accountable_type)[:hex]
   end
 
+  def account_tabs(account)
+    holdings_tab = { key: "holdings", label: t("accounts.show.holdings"), path: account_path(account, tab: "holdings"), content_path: account_holdings_path(account) }
+    cash_tab = { key: "cash", label: t("accounts.show.cash"), path: account_path(account, tab: "cash"), content_path: account_cashes_path(account) }
+    value_tab        = { key: "valuations", label: t("accounts.show.value"), path: account_path(account, tab: "valuations"), content_path: account_valuations_path(account) }
+    transactions_tab = { key: "transactions", label: t("accounts.show.transactions"), path: account_path(account, tab: "transactions"), content_path: account_transactions_path(account) }
+    trades_tab       = { key: "trades", label: t("accounts.show.trades"), path: account_path(account, tab: "trades"), content_path: account_trades_path(account) }
+
+    return [ holdings_tab, cash_tab, trades_tab ] if account.investment?
+
+    [ value_tab, transactions_tab ]
+  end
+
+  def selected_account_tab(account)
+    available_tabs = account_tabs(account)
+
+    tab = available_tabs.find { |tab| tab[:key] == params[:tab] }
+
+    tab || available_tabs.first
+  end
+
   private
 
-  def class_mapping(accountable_type)
-    {
-      "CreditCard" => { text: "text-red-500", bg: "bg-red-500", bg_transparent: "bg-red-500/10", fill: "fill-red-500", hex: "#F13636" },
-      "Loan" => { text: "text-fuchsia-500", bg: "bg-fuchsia-500", bg_transparent: "bg-fuchsia-500/10", fill: "fill-fuchsia-500", hex: "#D444F1" },
-      "OtherLiability" => { text: "text-gray-500", bg: "bg-gray-500", bg_transparent: "bg-gray-500/10", fill: "fill-gray-500", hex: "#737373" },
-      "Depository" => { text: "text-violet-500", bg: "bg-violet-500", bg_transparent: "bg-violet-500/10", fill: "fill-violet-500", hex: "#875BF7" },
-      "Investment" => { text: "text-blue-600", bg: "bg-blue-600", bg_transparent: "bg-blue-600/10", fill: "fill-blue-600", hex: "#1570EF" },
-      "OtherAsset" => { text: "text-green-500", bg: "bg-green-500", bg_transparent: "bg-green-500/10", fill: "fill-green-500", hex: "#12B76A" },
-      "Property" => { text: "text-cyan-500", bg: "bg-cyan-500", bg_transparent: "bg-cyan-500/10", fill: "fill-cyan-500", hex: "#06AED4" },
-      "Vehicle" => { text: "text-pink-500", bg: "bg-pink-500", bg_transparent: "bg-pink-500/10", fill: "fill-pink-500", hex: "#F23E94" }
-    }.fetch(accountable_type, { text: "text-gray-500", bg: "bg-gray-500", bg_transparent: "bg-gray-500/10", fill: "fill-gray-500", hex: "#737373" })
-  end
+    def class_mapping(accountable_type)
+      {
+        "CreditCard" => { text: "text-red-500", bg: "bg-red-500", bg_transparent: "bg-red-500/10", fill: "fill-red-500", hex: "#F13636" },
+        "Loan" => { text: "text-fuchsia-500", bg: "bg-fuchsia-500", bg_transparent: "bg-fuchsia-500/10", fill: "fill-fuchsia-500", hex: "#D444F1" },
+        "OtherLiability" => { text: "text-gray-500", bg: "bg-gray-500", bg_transparent: "bg-gray-500/10", fill: "fill-gray-500", hex: "#737373" },
+        "Depository" => { text: "text-violet-500", bg: "bg-violet-500", bg_transparent: "bg-violet-500/10", fill: "fill-violet-500", hex: "#875BF7" },
+        "Investment" => { text: "text-blue-600", bg: "bg-blue-600", bg_transparent: "bg-blue-600/10", fill: "fill-blue-600", hex: "#1570EF" },
+        "OtherAsset" => { text: "text-green-500", bg: "bg-green-500", bg_transparent: "bg-green-500/10", fill: "fill-green-500", hex: "#12B76A" },
+        "Property" => { text: "text-cyan-500", bg: "bg-cyan-500", bg_transparent: "bg-cyan-500/10", fill: "fill-cyan-500", hex: "#06AED4" },
+        "Vehicle" => { text: "text-pink-500", bg: "bg-pink-500", bg_transparent: "bg-pink-500/10", fill: "fill-pink-500", hex: "#F23E94" }
+      }.fetch(accountable_type, { text: "text-gray-500", bg: "bg-gray-500", bg_transparent: "bg-gray-500/10", fill: "fill-gray-500", hex: "#737373" })
+    end
 end

app/helpers/application_form_builder.rb

@@ -1,149 +0,0 @@
-class ApplicationFormBuilder < ActionView::Helpers::FormBuilder
-  def initialize(object_name, object, template, options)
-    options[:html] ||= {}
-    options[:html][:class] ||= "space-y-4"
-
-    super(object_name, object, template, options)
-  end
-
-  (field_helpers - [ :label, :check_box, :radio_button, :fields_for, :fields, :hidden_field, :file_field ]).each do |selector|
-    class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
-      def #{selector}(method, options = {})
-        default_options = { class: "form-field__input" }
-        merged_options = default_options.merge(options)
-
-        return super(method, merged_options) unless options[:label]
-
-        @template.form_field_tag do
-          label(method, *label_args(options)) +
-          super(method, merged_options.except(:label))
-        end
-      end
-    RUBY_EVAL
-  end
-
-  # See `Monetizable` concern, which adds a _money suffix to the attribute name
-  # For a monetized field, the setter will always be the attribute name without the _money suffix
-  def money_field(method, options = {})
-    money = @object && @object.respond_to?(method) ? @object.send(method) : nil
-    raise ArgumentError, "The value of #{method} is not a Money object" unless money.is_a?(Money) || money.nil?
-
-    money_amount_method = method.to_s.chomp("_money").to_sym
-    money_currency_method = :currency
-
-    readonly_currency = options[:readonly_currency] || false
-
-    currency = money&.currency || Money::Currency.new(Current.family.currency)  || Money.default_currency
-    default_options = {
-      class: "form-field__input",
-      value: money&.amount,
-      "data-money-field-target" => "amount",
-      placeholder: Money.new(0, currency).format,
-      min: -99999999999999,
-      max: 99999999999999,
-      step: currency.step
-    }
-
-    merged_options = default_options.merge(options)
-
-    grouped_options = currency_options_for_select
-    selected_currency = money&.currency&.iso_code || currency.iso_code
-
-    @template.form_field_tag data: { controller: "money-field" } do
-      (label(method, *label_args(options)).to_s if options[:label]) +
-        @template.tag.div(class: "flex items-center") do
-          number_field(money_amount_method, merged_options.except(:label)) +
-            grouped_select(money_currency_method, grouped_options, { selected: selected_currency, disabled: readonly_currency }, class: "ml-auto form-field__input w-fit pr-8", data: { "money-field-target" => "currency", action: "change->money-field#handleCurrencyChange" })
-        end
-    end
-  end
-
-  def radio_button(method, tag_value, options = {})
-    default_options = { class: "form-field__radio" }
-    merged_options = default_options.merge(options)
-    super(method, tag_value, merged_options)
-  end
-
-  def grouped_select(method, grouped_choices, options = {}, html_options = {})
-    default_options = { class: "form-field__input" }
-    merged_html_options = default_options.merge(html_options)
-
-    label_html = label(method, *label_args(options)).to_s if options[:label]
-    select_html = @template.grouped_collection_select(@object_name, method, grouped_choices, :last, :first, :last, :first, options, merged_html_options)
-
-    @template.content_tag(:div, class: "flex items-center") do
-      label_html.to_s.html_safe + select_html
-    end
-  end
-
-  def currency_select(method, options = {}, html_options = {})
-    default_options = { class: "form-field__input" }
-    merged_options = default_options.merge(html_options)
-
-    choices = currency_options_for_select
-
-    return @template.grouped_collection_select(@object_name, method, choices, :last, :first, :last, :first, options, merged_options) unless options[:label]
-
-    @template.form_field_tag do
-      label(method, *label_args(options)) +
-        @template.grouped_collection_select(@object_name, method, choices, :last, :first, :last, :first, options, merged_options.except(:label))
-    end
-  end
-
-  def select(method, choices, options = {}, html_options = {})
-    default_options = { class: "form-field__input" }
-    merged_options = default_options.merge(html_options)
-
-    return super(method, choices, options, merged_options) unless options[:label]
-
-    @template.form_field_tag do
-      label(method, *label_args(options)) +
-        super(method, choices, options, merged_options.except(:label))
-    end
-  end
-
-  def collection_select(method, collection, value_method, text_method, options = {}, html_options = {})
-    default_options = { class: "form-field__input" }
-    merged_options = default_options.merge(html_options)
-
-    return super(method, collection, value_method, text_method, options, merged_options) unless options[:label]
-
-    @template.form_field_tag do
-      label(method, *label_args(options)) +
-        super(method, collection, value_method, text_method, options, merged_options.except(:label))
-    end
-  end
-
-  def submit(value = nil, options = {})
-    value, options = nil, value if value.is_a?(Hash)
-    default_options = { class: "form-field__submit" }
-    merged_options = default_options.merge(options)
-    super(value, merged_options)
-  end
-
-  private
-
-    def currency_options_for_select
-      popular_currencies = Money::Currency.popular.map { |currency| [ currency.iso_code, currency.iso_code ] }
-      all_currencies = Money::Currency.all_instances.map { |currency| [ currency.iso_code, currency.iso_code ] }
-      all_other_currencies = all_currencies.reject { |c| popular_currencies.map(&:last).include?(c.last) }.sort_by(&:last)
-
-      {
-        I18n.t("accounts.new.currency.popular") => popular_currencies,
-        I18n.t("accounts.new.currency.all_others") => all_other_currencies
-      }
-    end
-
-    def label_args(options)
-      case options[:label]
-      when Array
-        options[:label]
-      when String
-        [ options[:label], { class: "form-field__label" } ]
-      when Hash
-        [ nil, options[:label] ]
-      else
-        [ nil, { class: "form-field__label" } ]
-      end
-    end
-end

app/helpers/application_helper.rb

@@ -13,11 +13,22 @@ module ApplicationHelper
     name.underscore
   end
 
-  def notification(text, **options, &block)
-    content = tag.p(text)
-    content = capture &block if block_given?
+  def family_notifications_stream
+    turbo_stream_from [ Current.family, :notifications ] if Current.family
+  end
 
-    render partial: "shared/notification", locals: { type: options[:type], content: { body: content } }
+  def family_stream
+    turbo_stream_from Current.family if Current.family
+  end
+
+  def render_flash_notifications
+    notifications = flash.flat_map do |type, message_or_messages|
+      Array(message_or_messages).map do |message|
+        render partial: "shared/notification", locals: { type: type, message: message }
+      end
+    end
+
+    safe_join(notifications)
   end
 
   ##
@@ -65,6 +76,20 @@ module ApplicationHelper
     end
   end
 
+  def mixed_hex_styles(hex)
+    color = hex || "#1570EF" # blue-600
+
+    <<-STYLE.strip
+      background-color: color-mix(in srgb, #{color} 5%, white);
+      border-color: color-mix(in srgb, #{color} 10%, white);
+      color: #{color};
+    STYLE
+  end
+
+  def circle_logo(name, hex: nil, size: "md")
+    render partial: "shared/circle_logo", locals: { name: name, hex: hex, size: size }
+  end
+
   def return_to_path(params, fallback = root_path)
     uri = URI.parse(params[:return_to] || fallback)
     uri.relative? ? uri.path : root_path
@@ -122,4 +147,11 @@ module ApplicationHelper
     options.reverse_merge!(money.default_format_options)
     ActiveSupport::NumberHelper.number_to_delimited(money.amount.round(options[:precision] || 0), { delimiter: options[:delimiter], separator: options[:separator] })
   end
+
+  def totals_by_currency(collection:, money_method:, separator: " | ", negate: false)
+    collection.group_by(&:currency)
+              .transform_values { |item| negate ? item.sum(&money_method) * -1 : item.sum(&money_method) }
+              .map { |_currency, money| format_money(money) }
+              .join(separator)
+  end
 end

app/helpers/forms_helper.rb

@@ -1,7 +1,18 @@
 module FormsHelper
+  def styled_form_with(**options, &block)
+    options[:builder] = StyledFormBuilder
+    form_with(**options, &block)
+  end
+
+  def modal_form_wrapper(title:, subtitle: nil, &block)
+    content = capture &block
+
+    render partial: "shared/modal_form", locals: { title:, subtitle:, content: }
+  end
+
   def form_field_tag(options = {}, &block)
     options[:class] = [ "form-field", options[:class] ].compact.join(" ")
-    tag.div **options, &block
+    tag.div(**options, &block)
   end
 
   def radio_tab_tag(form:, name:, value:, label:, icon:, checked: false, disabled: false)
@@ -11,7 +22,60 @@ module FormsHelper
     end
   end
 
+  def period_select(form:, selected:, classes: "border border-alpha-black-100 shadow-xs rounded-lg text-sm pr-7 cursor-pointer text-gray-900 focus:outline-none focus:ring-0")
+    periods_for_select = [ [ "7D", "last_7_days" ], [ "1M", "last_30_days" ], [ "1Y", "last_365_days" ], [ "All", "all" ] ]
+    form.select(:period, periods_for_select, { selected: selected }, class: classes, data: { "auto-submit-form-target": "auto" })
+  end
+
+  def money_with_currency_field(form, money_method, options = {})
+    render partial: "shared/money_field", locals: {
+      form:          form,
+      money_method:  money_method,
+      default_currency: options[:default_currency] || "USD",
+      disable_currency: options[:disable_currency] || false,
+      hide_currency: options[:hide_currency] || false,
+      label:         options[:label] || "Amount"
+    }
+  end
+
+  def money_field(form, method, options = {})
+    value = form.object ? form.object.send(method) : nil
+
+    currency = value&.currency || Money::Currency.new(options[:default_currency] || "USD")
+
+    # See "Monetizable" concern
+    money_amount_method = method.to_s.chomp("_money").to_sym
+
+    money_options = {
+      value: value&.amount,
+      placeholder: "100",
+      min:   -99999999999999,
+      max:   99999999999999,
+      step:  currency.step
+    }
+
+    merged_options = options.merge(money_options)
+
+    form.number_field money_amount_method, merged_options
+  end
+
+  def currency_select_full(form, method, options = {}, html_options = {}, &block)
+    choices = currencies_for_select.map { |currency| [ "#{currency.name} (#{currency.iso_code})", currency.iso_code ] }
+    form.select method, choices, options, html_options, &block
+  end
+
+  def currency_select(form, method, options = {}, html_options = {}, &block)
+    choices = currencies_for_select.map(&:iso_code)
+    form.select method, choices, options, html_options, &block
+  end
+
   private
+
+    def currencies_for_select
+      Money::Currency.all_instances
+                     .sort_by(&:priority)
+    end
+
     def radio_tab_contents(label:, icon:)
       tag.div(class: "flex px-4 py-1 rounded-lg items-center space-x-2 justify-center text-gray-400 group-has-[:checked]:bg-white group-has-[:checked]:text-gray-800 group-has-[:checked]:shadow-sm") do
         concat lucide_icon(icon, class: "w-5 h-5")

app/helpers/styled_form_builder.rb

@@ -0,0 +1,58 @@
+class StyledFormBuilder < ActionView::Helpers::FormBuilder
+  # Fields that visually inherit from "text field"
+  class_attribute :text_field_helpers, default: field_helpers - [ :label, :check_box, :radio_button, :fields_for, :fields, :hidden_field, :file_field ]
+
+  # Wraps "text" inputs with custom structure + base styles
+  text_field_helpers.each do |selector|
+    class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+      def #{selector}(method, options = {})
+        input_html = label_html(method, options) + super(method, merged_options(options))
+        input_html = apply_form_field_wrapper(input_html) unless options[:inline]
+        input_html
+      end
+    RUBY_EVAL
+  end
+
+  def radio_button(method, tag_value, options = {})
+    super(method, tag_value, merged_options(options, "form-field__radio"))
+  end
+
+  def select(method, choices, options = {}, html_options = {})
+    input_html = label_html(method, options) + super(method, choices, options, merged_options(html_options))
+    input_html = apply_form_field_wrapper(input_html, class: "pr-0") unless options[:inline]
+    input_html
+  end
+
+  def collection_select(method, collection, value_method, text_method, options = {}, html_options = {})
+    input_html = label_html(method, options) + super(method, collection, value_method, text_method, options, merged_options(html_options))
+    input_html = apply_form_field_wrapper(input_html, class: "pr-0") unless options[:inline]
+    input_html
+  end
+
+  def submit(value = nil, options = {})
+    value, options = nil, value if value.is_a?(Hash)
+    super(value, merged_options(options, "form-field__submit"))
+  end
+
+  private
+
+    def apply_form_field_wrapper(input_html, **options)
+      @template.form_field_tag(**options) do
+        input_html
+      end
+    end
+
+    def merged_options(options, default_class = "form-field__input")
+      combined_classes = options.fetch(:class, "") + " #{default_class}"
+      style_options = { class: combined_classes }
+      non_custom_options = options.except(:class, :label, :inline)
+      style_options.merge(non_custom_options)
+    end
+
+    def label_html(method, options)
+      return label(method, class: "form-field__label") if options[:label] == true
+      return "".html_safe unless options[:label]
+
+      label(method, options[:label], class: "form-field__label")
+    end
+end

app/helpers/transactions/searches_helper.rb

@@ -1,37 +0,0 @@
-module Transactions::SearchesHelper
-  def transaction_search_filters
-    [
-      { key: "account_filter", name: "Account", icon: "layers" },
-      { key: "date_filter", name: "Date", icon: "calendar" },
-      { key: "type_filter", name: "Type", icon: "shapes" },
-      { key: "amount_filter", name: "Amount", icon: "hash" },
-      { key: "category_filter", name: "Category", icon: "tag" },
-      { key: "merchant_filter", name: "Merchant", icon: "store" }
-    ]
-  end
-
-  def get_transaction_search_filter_partial_path(filter)
-    "transactions/searches/filters/#{filter[:key]}"
-  end
-
-  def get_default_transaction_search_filter
-    transaction_search_filters[0]
-  end
-
-  def transactions_path_without_param(param_key, param_value)
-    updated_params = request.query_parameters.deep_dup
-
-    q_params = updated_params[:q] || {}
-
-    current_value = q_params[param_key]
-    if current_value.is_a?(Array)
-      q_params[param_key] = current_value - [ param_value ]
-    else
-      q_params.delete(param_key)
-    end
-
-    updated_params[:q] = q_params
-
-    transactions_path(updated_params)
-  end
-end

app/helpers/transactions_helper.rb

@@ -1,43 +1,37 @@
 module TransactionsHelper
-  def transactions_group(date, transactions, transaction_partial_path = "transactions/transaction")
-    header_left = content_tag :span do
-      "#{date.strftime('%b %d, %Y')} · #{transactions.size}".html_safe
-    end
-
-    header_right = content_tag :span do
-      format_money(-transactions.sum(&:amount_money))
-    end
-
-    header = header_left.concat(header_right)
-
-    content = render partial: transaction_partial_path, collection: transactions
-
-    render partial: "shared/list_group", locals: {
-      header: header,
-      content: content
-    }
+  def transaction_search_filters
+    [
+      { key: "account_filter", name: "Account", icon: "layers" },
+      { key: "date_filter", name: "Date", icon: "calendar" },
+      { key: "type_filter", name: "Type", icon: "shapes" },
+      { key: "amount_filter", name: "Amount", icon: "hash" },
+      { key: "category_filter", name: "Category", icon: "tag" },
+      { key: "merchant_filter", name: "Merchant", icon: "store" }
+    ]
   end
 
-  def unconfirmed_transfer?(transaction)
-    transaction.marked_as_transfer && transaction.transfer.nil?
+  def get_transaction_search_filter_partial_path(filter)
+    "transactions/searches/filters/#{filter[:key]}"
   end
 
-  def group_transactions_by_date(transactions)
-    grouped_by_date = {}
+  def get_default_transaction_search_filter
+    transaction_search_filters[0]
+  end
 
-    transactions.each do |transaction|
-      if transaction.transfer
-        transfer_date = transaction.transfer.inflow_transaction.date
-        grouped_by_date[transfer_date] ||= { transactions: [], transfers: [] }
-        unless grouped_by_date[transfer_date][:transfers].include?(transaction.transfer)
-          grouped_by_date[transfer_date][:transfers] << transaction.transfer
-        end
-      else
-        grouped_by_date[transaction.date] ||= { transactions: [], transfers: [] }
-        grouped_by_date[transaction.date][:transactions] << transaction
-      end
+  def transactions_path_without_param(param_key, param_value)
+    updated_params = request.query_parameters.deep_dup
+
+    q_params = updated_params[:q] || {}
+
+    current_value = q_params[param_key]
+    if current_value.is_a?(Array)
+      q_params[param_key] = current_value - [ param_value ]
+    else
+      q_params.delete(param_key)
     end
 
-    grouped_by_date
+    updated_params[:q] = q_params
+
+    transactions_path(updated_params)
   end
 end

app/helpers/value_groups_helper.rb

@@ -1,17 +1,13 @@
 module ValueGroupsHelper
   def value_group_pie_data(value_group)
-    value_group.children
-      .map do |child|
-        {
-          label: to_accountable_title(Accountable.from_type(child.name)),
-          percent_of_total: child.percent_of_total.round(1).to_f,
-          value: child.sum.amount.to_f,
-          currency: child.sum.currency.iso_code,
-          bg_color: accountable_bg_class(child.name),
-          fill_color: accountable_fill_class(child.name)
-        }
-      end
-      .filter { |child| child[:value] > 0 }
-      .to_json
+    value_group.children.filter { |c| c.sum > 0 }.map do |child|
+      {
+        label: to_accountable_title(Accountable.from_type(child.name)),
+        percent_of_total: child.percent_of_total.round(1).to_f,
+        formatted_value: format_money(child.sum, precision: 0),
+        bg_color: accountable_bg_class(child.name),
+        fill_color: accountable_fill_class(child.name)
+      }
+    end.to_json
   end
 end

app/javascript/controllers/bulk_select_controller.js

@@ -25,7 +25,7 @@ export default class extends Controller {
   submitBulkRequest(e) {
     const form = e.target.closest("form");
     const scope = e.params.scope
-    this.#addHiddenFormInputsForSelectedIds(form, `${scope}[transaction_ids][]`, this.selectedIdsValue)
+    this.#addHiddenFormInputsForSelectedIds(form, `${scope}[entry_ids][]`, this.selectedIdsValue)
     form.requestSubmit()
   }
 
@@ -59,6 +59,7 @@ export default class extends Controller {
 
   deselectAll() {
     this.selectedIdsValue = []
+    this.element.querySelectorAll('input[type="checkbox"]').forEach(el => el.checked = false)
   }
 
   selectedIdsValueChanged() {

app/javascript/controllers/csv_upload_controller.js

@@ -0,0 +1,94 @@
+import { Controller } from "@hotwired/stimulus"
+
+export default class extends Controller {
+  static targets = ["input", "preview", "submit", "filename", "filesize"]
+
+  connect() {
+    this.submitTarget.disabled = true
+  }
+
+  addFile(event) {
+    const file = event.target.files[0]
+    this._fileAdded(file)
+  }
+
+  dragover(event) {
+    event.preventDefault()
+    event.stopPropagation()
+    event.currentTarget.classList.add("bg-gray-100")
+  }
+
+  dragleave(event) {
+    event.preventDefault()
+    event.stopPropagation()
+    event.currentTarget.classList.remove("bg-gray-100")
+  }
+
+  drop(event) {
+    event.preventDefault()
+    event.stopPropagation()
+    event.currentTarget.classList.remove("bg-gray-100")
+
+    const file = event.dataTransfer.files[0]
+    if (file && this._isCSVFile(file)) {
+      this._setFileInput(file);
+      this._fileAdded(file)
+    } else {
+      this.previewTarget.classList.add("text-red-500")
+      this.previewTarget.textContent = "Only CSV files are allowed."
+    }
+  }
+
+  // Private
+
+  _fetchFileSize(size) {
+    let fileSize = '';
+    if (size < 1024 * 1024) {
+      fileSize = (size / 1024).toFixed(2) + ' KB'; // Convert bytes to KB
+    } else {
+      fileSize = (size / (1024 * 1024)).toFixed(2) + ' MB'; // Convert bytes to MB
+    }
+    return fileSize;
+  }
+
+  _fileAdded(file) {
+    const fileSizeLimit = 5 * 1024 * 1024 // 5MB
+
+    if (file) {
+      if (file.size > fileSizeLimit) {
+        this.previewTarget.classList.add("text-red-500")
+        this.previewTarget.textContent = "File size exceeds the limit of 5MB"
+        return
+      }
+
+      this.submitTarget.classList.remove([
+        "bg-alpha-black-25",
+        "text-gray",
+        "cursor-not-allowed",
+      ]);
+      this.submitTarget.classList.add(
+        "bg-gray-900",
+        "text-white",
+        "cursor-pointer",
+      );
+      this.submitTarget.disabled = false;
+      this.previewTarget.innerHTML = document.querySelector("#template-preview").innerHTML;
+      this.previewTarget.classList.remove("text-red-500")
+      this.previewTarget.classList.add("text-gray-900")
+      this.filenameTarget.textContent = file.name;
+      this.filesizeTarget.textContent = this._fetchFileSize(file.size);
+    }
+  }
+
+  _isCSVFile(file) {
+    const acceptedTypes = ["text/csv", "application/csv", ".csv"]
+    const extension = file.name.split('.').pop().toLowerCase()
+    return acceptedTypes.includes(file.type) || extension === "csv"
+  }
+
+  _setFileInput(file) {
+    const dataTransfer = new DataTransfer();
+    dataTransfer.items.add(file);
+    this.inputTarget.files = dataTransfer.files;
+  }
+}

app/javascript/controllers/money_field_controller.js

@@ -4,17 +4,23 @@ import { CurrenciesService } from "services/currencies_service";
 // Connects to data-controller="money-field"
 // when currency select change, update the input value with the correct placeholder and step
 export default class extends Controller {
-  static targets = ["amount", "currency"];
+  static targets = ["amount", "currency", "symbol"];
 
-  handleCurrencyChange() {
-    const selectedCurrency = event.target.value;
+  handleCurrencyChange(e) {
+    const selectedCurrency = e.target.value;
     this.updateAmount(selectedCurrency);
   }
 
   updateAmount(currency) {
-    (new CurrenciesService).get(currency).then((data) => {
-      this.amountTarget.placeholder = data.placeholder;
-      this.amountTarget.step = data.step;
+    (new CurrenciesService).get(currency).then((currency) => {
+      console.log(currency)
+      this.amountTarget.step = currency.step;
+
+      if (isFinite(this.amountTarget.value)) {
+        this.amountTarget.value = parseFloat(this.amountTarget.value).toFixed(currency.default_precision)
+      }
+
+      this.symbolTarget.innerText = currency.symbol;
     });
   }
 }

app/javascript/controllers/pie_chart_controller.js

@@ -5,6 +5,7 @@ import * as d3 from "d3";
 export default class extends Controller {
   static values = {
     data: Array,
+    total: String,
     label: String,
   };
 
@@ -38,7 +39,7 @@ export default class extends Controller {
 
   #draw() {
     this.#d3Container.attr("class", "relative");
-    this.#d3Content.html(this.#contentSummaryTemplate(this.dataValue));
+    this.#d3Content.html(this.#contentSummaryTemplate());
 
     const pie = d3
       .pie()
@@ -75,23 +76,17 @@ export default class extends Controller {
         this.#d3Svg
           .selectAll(".arc path")
           .attr("class", (d) => d.data.fill_color);
-        this.#d3ContentMemo.html(this.#contentSummaryTemplate(this.dataValue));
+        this.#d3ContentMemo.html(this.#contentSummaryTemplate());
       });
   }
 
-  #contentSummaryTemplate(data) {
-    const total = data.reduce((acc, cur) => acc + cur.value, 0);
-    const currency = data[0].currency;
-
-    return `${this.#currencyValue({
-      value: total,
-      currency,
-    })} <span class="text-xs">${this.labelValue}</span>`;
+  #contentSummaryTemplate() {
+    return `<span class="text-xl text-gray-900 font-medium">${this.totalValue}</span> <span class="text-xs">${this.labelValue}</span>`;
   }
 
   #contentDetailTemplate(datum) {
     return `
-      <span>${this.#currencyValue(datum)}</span>
+      <span class="text-xl text-gray-900 font-medium">${datum.formatted_value}</span>
       <div class="flex flex-row text-xs gap-2 items-center">
       <div class="w-[10px] h-[10px] rounded-full ${datum.bg_color}"></div>
         <span>${datum.label}</span>
@@ -100,21 +95,6 @@ export default class extends Controller {
     `;
   }
 
-  #currencyValue(datum) {
-    const formattedValue = Intl.NumberFormat(undefined, {
-      style: "currency",
-      currency: datum.currency,
-      currencyDisplay: "narrowSymbol",
-    }).format(datum.value);
-
-    const firstDigitIndex = formattedValue.search(/\d/);
-    const currencyPrefix = formattedValue.substring(0, firstDigitIndex);
-    const mainPart = formattedValue.substring(firstDigitIndex);
-    const [integerPart, fractionalPart] = mainPart.split(".");
-
-    return `<p class="text-gray-500 -space-x-0.5">${currencyPrefix}<span class="text-xl text-gray-900 font-medium">${integerPart}</span>.${fractionalPart}</p>`;
-  }
-
   get #radius() {
     return Math.min(this.#d3ViewboxWidth, this.#d3ViewboxHeight) / 2;
   }

app/javascript/controllers/select_controller.js

@@ -1,179 +0,0 @@
-import { Controller } from "@hotwired/stimulus";
-
-/**
- * A custom "select" element that follows accessibility patterns of a native select element.
- *
- * - If you need to display arbitrary content including non-clickable items, links, buttons, and forms, use the "popover" controller instead.
- */
-export default class extends Controller {
-  static classes = ["active"];
-  static targets = ["option", "button", "list", "input", "buttonText"];
-  static values = { selected: String };
-
-  initialize() {
-    this.show = false;
-
-    const selectedElement = this.optionTargets.find(
-      (option) => option.dataset.value === this.selectedValue
-    );
-    if (selectedElement) {
-      this.updateAriaAttributesAndClasses(selectedElement);
-      this.syncButtonTextWithInput();
-    }
-  }
-
-  connect() {
-    this.syncButtonTextWithInput();
-    if (this.hasButtonTarget) {
-      this.buttonTarget.addEventListener("click", this.toggleList);
-    }
-    this.element.addEventListener("keydown", this.handleKeydown);
-    document.addEventListener("click", this.handleOutsideClick);
-    this.element.addEventListener("turbo:load", this.handleTurboLoad);
-  }
-
-  disconnect() {
-    this.element.removeEventListener("keydown", this.handleKeydown);
-    document.removeEventListener("click", this.handleOutsideClick);
-    this.element.removeEventListener("turbo:load", this.handleTurboLoad);
-
-    if (this.hasButtonTarget) {
-      this.buttonTarget.removeEventListener("click", this.toggleList);
-    }
-  }
-
-  selectedValueChanged() {
-    this.syncButtonTextWithInput();
-  }
-
-  handleOutsideClick = (event) => {
-    if (this.show && !this.element.contains(event.target)) {
-      this.close();
-    }
-  };
-
-  handleTurboLoad = () => {
-    this.close();
-    this.syncButtonTextWithInput();
-  };
-
-  handleKeydown = (event) => {
-    switch (event.key) {
-      case " ":
-      case "Enter":
-        event.preventDefault(); // Prevent the default action to avoid scrolling
-        if (
-          this.hasButtonTarget &&
-          document.activeElement === this.buttonTarget
-        ) {
-          this.toggleList();
-        } else {
-          this.selectOption(event);
-        }
-        break;
-      case "ArrowDown":
-        event.preventDefault(); // Prevent the default action to avoid scrolling
-        this.focusNextOption();
-        break;
-      case "ArrowUp":
-        event.preventDefault(); // Prevent the default action to avoid scrolling
-        this.focusPreviousOption();
-        break;
-      case "Escape":
-        this.close();
-        if (this.hasButtonTarget) {
-          this.buttonTarget.focus(); // Bring focus back to the button
-        }
-        break;
-      case "Tab":
-        this.close();
-        break;
-    }
-  };
-
-  focusNextOption() {
-    this.focusOptionInDirection(1);
-  }
-
-  focusPreviousOption() {
-    this.focusOptionInDirection(-1);
-  }
-
-  focusOptionInDirection(direction) {
-    const currentFocusedIndex = this.optionTargets.findIndex(
-      (option) => option === document.activeElement
-    );
-    const optionsCount = this.optionTargets.length;
-    const nextIndex =
-      (currentFocusedIndex + direction + optionsCount) % optionsCount;
-    this.optionTargets[nextIndex].focus();
-  }
-
-  toggleList = () => {
-    if (!this.hasButtonTarget) return; // Ensure button target is present before toggling
-
-    this.show = !this.show;
-    this.listTarget.classList.toggle("hidden", !this.show);
-    this.buttonTarget.setAttribute("aria-expanded", this.show.toString());
-
-    if (this.show) {
-      // Focus the first option or the selected option when the list is shown
-      const selectedOption = this.optionTargets.find(
-        (option) => option.getAttribute("aria-selected") === "true"
-      );
-      (selectedOption || this.optionTargets[0]).focus();
-    }
-  };
-
-  close() {
-    if (this.hasButtonTarget) {
-      this.show = false;
-      this.listTarget.classList.add("hidden");
-      this.buttonTarget.setAttribute("aria-expanded", "false");
-    }
-  }
-
-  selectOption(event) {
-    const selectedOption =
-      event.type === "keydown" ? document.activeElement : event.currentTarget;
-    this.updateAriaAttributesAndClasses(selectedOption);
-    if (this.inputTarget.value !== selectedOption.getAttribute("data-value")) {
-      this.updateInputValueAndEmitEvent(selectedOption);
-    }
-    this.close(); // Close the list after selection
-  }
-
-  updateAriaAttributesAndClasses(selectedOption) {
-    this.optionTargets.forEach((option) => {
-      option.setAttribute("aria-selected", "false");
-      option.setAttribute("tabindex", "-1");
-      option.classList.remove(...this.activeClasses);
-    });
-    selectedOption.classList.add(...this.activeClasses);
-    selectedOption.setAttribute("aria-selected", "true");
-    selectedOption.focus();
-  }
-
-  updateInputValueAndEmitEvent(selectedOption) {
-    // Update the hidden input's value
-    const selectedValue = selectedOption.getAttribute("data-value");
-    this.inputTarget.value = selectedValue;
-    this.syncButtonTextWithInput();
-
-    // Emit an input event for auto-submit functionality
-    const inputEvent = new Event("input", {
-      bubbles: true,
-      cancelable: true,
-    });
-    this.inputTarget.dispatchEvent(inputEvent);
-  }
-
-  syncButtonTextWithInput() {
-    const matchingOption = this.optionTargets.find(
-      (option) => option.getAttribute("data-value") === this.inputTarget.value
-    );
-    if (matchingOption && this.hasButtonTextTarget) {
-      this.buttonTextTarget.textContent = matchingOption.textContent.trim();
-    }
-  }
-}

app/javascript/controllers/tooltip_controller.js

@@ -0,0 +1,83 @@
+import { Controller } from '@hotwired/stimulus'
+import {
+  computePosition,
+  flip,
+  shift,
+  offset,
+  autoUpdate
+} from '@floating-ui/dom';
+
+export default class extends Controller {
+  static targets = ["tooltip"];
+  static values = {
+    placement: { type: String, default: "top" },
+    offset: { type: Number, default: 10 },
+    crossAxis: { type: Number, default: 0 },
+    alignmentAxis: { type: Number, default: null },
+  };
+
+  connect() {
+    this._cleanup = null;
+    this.boundUpdate = this.update.bind(this);
+    this.startAutoUpdate();
+    this.addEventListeners();
+  }
+
+  disconnect() {
+    this.removeEventListeners();
+    this.stopAutoUpdate();
+  }
+
+  addEventListeners() {
+    this.element.addEventListener("mouseenter", this.show);
+    this.element.addEventListener("mouseleave", this.hide);
+  }
+
+  removeEventListeners() {
+    this.element.removeEventListener("mouseenter", this.show);
+    this.element.removeEventListener("mouseleave", this.hide);
+  }
+
+  show = () => {
+    this.tooltipTarget.style.display = 'block';
+    this.update(); // Ensure immediate update when shown
+  }
+
+  hide = () => {
+    this.tooltipTarget.style.display = 'none';
+  }
+
+  startAutoUpdate() {
+    if (!this._cleanup) {
+      this._cleanup = autoUpdate(
+        this.element,
+        this.tooltipTarget,
+        this.boundUpdate
+      );
+    }
+  }
+
+  stopAutoUpdate() {
+    if (this._cleanup) {
+      this._cleanup();
+      this._cleanup = null;
+    }
+  }
+
+  update() {
+    // Update position even if not visible, to ensure correct positioning when shown
+    computePosition(this.element, this.tooltipTarget, {
+      placement: this.placementValue,
+      middleware: [
+        offset({ mainAxis: this.offsetValue, crossAxis: this.crossAxisValue, alignmentAxis: this.alignmentAxisValue }),
+        flip(),
+        shift({ padding: 5 })
+      ],
+    }).then(({ x, y, placement, middlewareData }) => {
+      Object.assign(this.tooltipTarget.style, {
+        left: `${x}px`,
+        top: `${y}px`,
+      });
+    });
+  }
+}

app/javascript/controllers/trade_form_controller.js

@@ -0,0 +1,64 @@
+import {Controller} from "@hotwired/stimulus"
+
+const TRADE_TYPES = {
+  BUY: "buy",
+  SELL: "sell",
+  TRANSFER_IN: "transfer_in",
+  TRANSFER_OUT: "transfer_out",
+  INTEREST: "interest"
+}
+
+const FIELD_VISIBILITY = {
+  [TRADE_TYPES.BUY]: {ticker: true, qty: true, price: true},
+  [TRADE_TYPES.SELL]: {ticker: true, qty: true, price: true},
+  [TRADE_TYPES.TRANSFER_IN]: {amount: true, transferAccount: true},
+  [TRADE_TYPES.TRANSFER_OUT]: {amount: true, transferAccount: true},
+  [TRADE_TYPES.INTEREST]: {amount: true}
+}
+
+// Connects to data-controller="trade-form"
+export default class extends Controller {
+  static targets = ["typeInput", "tickerInput", "amountInput", "transferAccountInput", "qtyInput", "priceInput"]
+
+  connect() {
+    this.handleTypeChange = this.handleTypeChange.bind(this)
+    this.typeInputTarget.addEventListener("change", this.handleTypeChange)
+    this.updateFields(this.typeInputTarget.value || TRADE_TYPES.BUY)
+  }
+
+  disconnect() {
+    this.typeInputTarget.removeEventListener("change", this.handleTypeChange)
+  }
+
+  handleTypeChange(event) {
+    this.updateFields(event.target.value)
+  }
+
+  updateFields(type) {
+    const visibleFields = FIELD_VISIBILITY[type] || {}
+
+    Object.entries(this.fieldTargets).forEach(([field, target]) => {
+      const isVisible = visibleFields[field] || false
+
+      // Update visibility
+      target.hidden = !isVisible
+
+      // Update required status based on visibility
+      if (isVisible) {
+        target.setAttribute('required', '')
+      } else {
+        target.removeAttribute('required')
+      }
+    })
+  }
+
+  get fieldTargets() {
+    return {
+      ticker: this.tickerInputTarget,
+      amount: this.amountInputTarget,
+      transferAccount: this.transferAccountInputTarget,
+      qty: this.qtyInputTarget,
+      price: this.priceInputTarget
+    }
+  }
+}

app/jobs/account_sync_job.rb

@@ -1,7 +1,7 @@
 class AccountSyncJob < ApplicationJob
   queue_as :default
 
-  def perform(account, start_date = nil)
-    account.sync(start_date)
+  def perform(account, start_date: nil)
+    account.sync(start_date: start_date)
   end
 end

app/models/account.rb

@@ -1,21 +1,24 @@
 class Account < ApplicationRecord
-  include Syncable
-  include Monetizable
+  include Syncable, Monetizable, Issuable
 
-  broadcasts_refreshes
-
-  validates :family, presence: true
+  validates :name, :balance, :currency, presence: true
 
   belongs_to :family
   belongs_to :institution, optional: true
+
+  has_many :entries, dependent: :destroy, class_name: "Account::Entry"
+  has_many :transactions, through: :entries, source: :entryable, source_type: "Account::Transaction"
+  has_many :valuations, through: :entries, source: :entryable, source_type: "Account::Valuation"
+  has_many :trades, through: :entries, source: :entryable, source_type: "Account::Trade"
+  has_many :holdings, dependent: :destroy
   has_many :balances, dependent: :destroy
-  has_many :valuations, dependent: :destroy
-  has_many :transactions, dependent: :destroy
   has_many :imports, dependent: :destroy
+  has_many :syncs, dependent: :destroy
+  has_many :issues, as: :issuable, dependent: :destroy
 
   monetize :balance
 
-  enum :status, { ok: "ok", syncing: "syncing", error: "error" }, validate: true
+  enum :classification, { asset: "asset", liability: "liability" }, validate: { allow_nil: true }
 
   scope :active, -> { where(is_active: true) }
   scope :assets, -> { where(classification: "asset") }
@@ -25,82 +28,83 @@ class Account < ApplicationRecord
 
   delegated_type :accountable, types: Accountable::TYPES, dependent: :destroy
 
-  def balance_on(date)
-    balances.where("date <= ?", date).order(date: :desc).first&.balance
+  delegate :value, :series, to: :accountable
+
+  class << self
+    def by_group(period: Period.all, currency: Money.default_currency.iso_code)
+      grouped_accounts = { assets: ValueGroup.new("Assets", currency), liabilities: ValueGroup.new("Liabilities", currency) }
+
+      Accountable.by_classification.each do |classification, types|
+        types.each do |type|
+          group = grouped_accounts[classification.to_sym].add_child_group(type, currency)
+          self.where(accountable_type: type).each do |account|
+            group.add_value_node(
+              account,
+              account.balance_money.exchange_to(currency, fallback_rate: 0),
+              account.series(period: period, currency: currency)
+            )
+          end
+        end
+      end
+
+      grouped_accounts
+    end
+
+    def create_with_optional_start_balance!(attributes:, start_date: nil, start_balance: nil)
+      account = self.new(attributes.except(:accountable_type))
+      account.accountable = Accountable.from_type(attributes[:accountable_type])&.new
+
+      # Always build the initial valuation
+      account.entries.build \
+        date: Date.current,
+        amount: attributes[:balance],
+        currency: account.currency,
+        entryable: Account::Valuation.new
+
+      # Conditionally build the optional start valuation
+      if start_date.present? && start_balance.present?
+        account.entries.build \
+          date: start_date,
+          amount: start_balance,
+          currency: account.currency,
+          entryable: Account::Valuation.new
+      end
+
+      account.save!
+      account
+    end
+  end
+
+  def owns_ticker?(ticker)
+    security_id = Security.find_by(ticker: ticker)&.id
+    entries.account_trades
+           .joins("JOIN account_trades ON account_entries.entryable_id = account_trades.id")
+           .where(account_trades: { security_id: security_id }).any?
   end
 
   def favorable_direction
     classification == "asset" ? "up" : "down"
   end
 
-  # e.g. Wise, Revolut accounts that have transactions in multiple currencies
-  def multi_currency?
-    currencies = [ valuations.pluck(:currency), transactions.pluck(:currency) ].flatten.uniq
-    currencies.count > 1
-  end
+  def update_balance!(balance)
+    valuation = entries.account_valuations.find_by(date: Date.current)
 
-  # e.g. Accounts denominated in currency other than family currency
-  def foreign_currency?
-    currency != family.currency
-  end
-
-  def self.by_provider
-    # TODO: When 3rd party providers are supported, dynamically load all providers and their accounts
-    [ { name: "Manual accounts", accounts: all.order(balance: :desc).group_by(&:accountable_type) } ]
-  end
-
-  def self.some_syncing?
-    exists?(status: "syncing")
-  end
-
-
-  def series(period: Period.all, currency: self.currency)
-    balance_series = balances.in_period(period).where(currency: Money::Currency.new(currency).iso_code)
-
-    if balance_series.empty? && period.date_range.end == Date.current
-      converted_balance = balance_money.exchange_to(currency)
-      if converted_balance
-        TimeSeries.new([ { date: Date.current, value: converted_balance } ])
-      else
-        TimeSeries.new([])
-      end
+    if valuation
+      valuation.update! amount: balance
     else
-      TimeSeries.from_collection(balance_series, :balance_money)
+      entries.create! \
+        date: Date.current,
+        amount: balance,
+        currency: currency,
+        entryable: Account::Valuation.new
     end
   end
 
-  def self.by_group(period: Period.all, currency: Money.default_currency)
-    grouped_accounts = { assets: ValueGroup.new("Assets", currency), liabilities: ValueGroup.new("Liabilities", currency) }
-
-    Accountable.by_classification.each do |classification, types|
-      types.each do |type|
-        group = grouped_accounts[classification.to_sym].add_child_group(type, currency)
-        self.where(accountable_type: type).each do |account|
-          value_node = group.add_value_node(
-            account,
-            account.balance_money.exchange_to(currency) || Money.new(0, currency),
-            account.series(period: period, currency: currency)
-          )
-        end
-      end
-    end
-
-    grouped_accounts
-  end
-
-  def self.create_with_optional_start_balance!(attributes:, start_date: nil, start_balance: nil)
-    account = self.new(attributes.except(:accountable_type))
-    account.accountable = Accountable.from_type(attributes[:accountable_type])&.new
-
-    # Always build the initial valuation
-    account.valuations.build(date: Date.current, value: attributes[:balance], currency: account.currency)
-
-    # Conditionally build the optional start valuation
-    if start_date.present? && start_balance.present?
-      account.valuations.build(date: start_date, value: start_balance, currency: account.currency)
-    end
-
-    account.save!
-    account
+  def holding_qty(security, date: Date.current)
+    entries.account_trades
+           .joins("JOIN account_trades ON account_entries.entryable_id = account_trades.id")
+           .where(account_trades: { security_id: security.id })
+           .where("account_entries.date <= ?", date)
+           .sum("account_trades.qty")
   end
 end

app/models/account/balance.rb

@@ -5,4 +5,5 @@ class Account::Balance < ApplicationRecord
     validates :account, :date, :balance, presence: true
     monetize :balance
     scope :in_period, ->(period) { period.date_range.nil? ? all : where(date: period.date_range) }
+    scope :chronological, -> { order(:date) }
 end

app/models/account/balance/calculator.rb

@@ -1,123 +0,0 @@
-class Account::Balance::Calculator
-    attr_reader :daily_balances, :errors, :warnings
-
-    def initialize(account, options = {})
-      @daily_balances = []
-      @errors = []
-      @warnings = []
-      @account = account
-      @calc_start_date = [ options[:calc_start_date], @account.effective_start_date ].compact.max
-    end
-
-    def calculate
-      prior_balance = implied_start_balance
-
-      calculated_balances = ((@calc_start_date + 1.day)..Date.current).map do |date|
-        valuation = normalized_valuations.find { |v| v["date"] == date }
-
-        if valuation
-          current_balance = valuation["value"]
-        else
-          txn_flows = transaction_flows(date)
-          current_balance = prior_balance - txn_flows
-        end
-
-        prior_balance = current_balance
-
-        { date:, balance: current_balance, currency: @account.currency, updated_at: Time.current }
-      end
-
-      @daily_balances = [
-        { date: @calc_start_date, balance: implied_start_balance, currency: @account.currency, updated_at: Time.current },
-        *calculated_balances
-      ]
-
-      if @account.foreign_currency?
-        converted_balances = convert_balances_to_family_currency
-        @daily_balances.concat(converted_balances)
-      end
-
-      self
-    end
-
-    private
-      def convert_balances_to_family_currency
-        rates = ExchangeRate.get_rates(
-          @account.currency,
-          @account.family.currency,
-          @calc_start_date..Date.current
-        ).to_a
-
-        # Abort conversion if some required rates are missing
-        if rates.length != @daily_balances.length
-          @errors << :sync_message_missing_rates
-          return []
-        end
-
-        @daily_balances.map.with_index do |balance, index|
-          converted_balance = balance[:balance] * rates[index].rate
-          { date: balance[:date], balance: converted_balance, currency: @account.family.currency, updated_at: Time.current }
-        end
-      end
-
-      # For calculation, all transactions and valuations need to be normalized to the same currency (the account's primary currency)
-      def normalize_entries_to_account_currency(entries, value_key)
-        grouped_entries = entries.group_by(&:currency)
-        normalized_entries = []
-
-        grouped_entries.each do |currency, entries|
-          if currency != @account.currency
-            dates = entries.map(&:date).uniq
-            rates = ExchangeRate.get_rates(currency, @account.currency, dates).to_a
-            if rates.length != dates.length
-              @errors << :sync_message_missing_rates
-            else
-              entries.each do |entry|
-                ## There can be several entries on the same date so we cannot rely on indeces
-                rate = rates.find { |rate| rate.date == entry.date }
-                value = entry.send(value_key)
-                value *= rate.rate
-                normalized_entries << entry.attributes.merge(value_key.to_s => value, "currency" => currency)
-              end
-            end
-          else
-            normalized_entries.concat(entries)
-          end
-        end
-
-        normalized_entries
-      end
-
-      def normalized_valuations
-        @normalized_valuations ||= normalize_entries_to_account_currency(@account.valuations.where("date >= ?", @calc_start_date).order(:date).select(:date, :value, :currency), :value)
-      end
-
-      def normalized_transactions
-        @normalized_transactions ||= normalize_entries_to_account_currency(@account.transactions.where("date >= ?", @calc_start_date).order(:date).select(:date, :amount, :currency), :amount)
-      end
-
-      def transaction_flows(date)
-        flows = normalized_transactions.select { |t| t["date"] == date }.sum { |t| t["amount"] }
-        flows *= -1 if @account.classification == "liability"
-        flows
-      end
-
-      def implied_start_balance
-        if @calc_start_date > @account.effective_start_date
-          return @account.balance_on(@calc_start_date)
-        end
-
-        oldest_valuation_date = normalized_valuations.first&.date
-        oldest_transaction_date = normalized_transactions.first&.date
-        oldest_entry_date = [ oldest_valuation_date, oldest_transaction_date ].compact.min
-
-        if oldest_entry_date.present? && oldest_entry_date == oldest_valuation_date
-          oldest_valuation = normalized_valuations.find { |v| v["date"] == oldest_valuation_date }
-          oldest_valuation["value"].to_d
-        else
-          net_transaction_flows = normalized_transactions.sum { |t| t["amount"].to_d }
-          net_transaction_flows *= -1 if @account.classification == "liability"
-          @account.balance.to_d + net_transaction_flows
-        end
-      end
-end

app/models/account/balance/syncer.rb

@@ -0,0 +1,132 @@
+class Account::Balance::Syncer
+  def initialize(account, start_date: nil)
+    @account = account
+    @sync_start_date = calculate_sync_start_date(start_date)
+  end
+
+  def run
+    daily_balances = calculate_daily_balances
+    daily_balances += calculate_converted_balances(daily_balances) if account.currency != account.family.currency
+
+    Account::Balance.transaction do
+      upsert_balances!(daily_balances)
+      purge_stale_balances!
+
+      if daily_balances.any?
+        account.reload
+        account.update! balance: daily_balances.select { |db| db.currency == account.currency }.last&.balance
+      end
+    end
+  rescue Money::ConversionError => e
+    account.observe_missing_exchange_rates(from: e.from_currency, to: e.to_currency, dates: [ e.date ])
+  end
+
+  private
+
+    attr_reader :sync_start_date, :account
+
+    def upsert_balances!(balances)
+      current_time = Time.now
+      balances_to_upsert = balances.map do |balance|
+        balance.attributes.slice("date", "balance", "currency").merge("updated_at" => current_time)
+      end
+
+      account.balances.upsert_all(balances_to_upsert, unique_by: %i[account_id date currency])
+    end
+
+    def purge_stale_balances!
+      account.balances.delete_by("date < ?", account_start_date)
+    end
+
+    def calculate_balance_for_date(date, entries:, prior_balance:)
+      valuation = entries.find { |e| e.date == date && e.account_valuation? }
+
+      return valuation.amount if valuation
+      return derived_sync_start_balance(entries) unless prior_balance
+
+      entries = entries.select { |e| e.date == date }
+
+      prior_balance - net_entry_flows(entries)
+    end
+
+    def calculate_daily_balances
+      entries = account.entries.where("date >= ?", sync_start_date).to_a
+      prior_balance = find_prior_balance
+
+      (sync_start_date..Date.current).map do |date|
+        current_balance = calculate_balance_for_date(date, entries:, prior_balance:)
+
+        prior_balance = current_balance
+
+        build_balance(date, current_balance)
+      end
+    end
+
+    def calculate_converted_balances(balances)
+      from_currency = account.currency
+      to_currency = account.family.currency
+
+      if ExchangeRate.exchange_rates_provider.nil?
+        account.observe_missing_exchange_rate_provider
+        return []
+      end
+
+      exchange_rates = ExchangeRate.find_rates from: from_currency,
+                                               to: to_currency,
+                                               start_date: sync_start_date
+
+      missing_exchange_rates = balances.map(&:date) - exchange_rates.map(&:date)
+
+      if missing_exchange_rates.any?
+        account.observe_missing_exchange_rates(from: from_currency, to: to_currency, dates: missing_exchange_rates)
+        return []
+      end
+
+      balances.map do |balance|
+        exchange_rate = exchange_rates.find { |er| er.date == balance.date }
+        build_balance(balance.date, exchange_rate.rate * balance.balance, to_currency)
+      end
+    end
+
+    def build_balance(date, balance, currency = nil)
+      account.balances.build \
+        date: date,
+        balance: balance,
+        currency: currency || account.currency
+    end
+
+    def derived_sync_start_balance(entries)
+      transactions_and_trades = entries.reject { |e| e.account_valuation? }.select { |e| e.date > sync_start_date }
+
+      account.balance + net_entry_flows(transactions_and_trades)
+    end
+
+    def find_prior_balance
+      account.balances.where("date < ?", sync_start_date).order(date: :desc).first&.balance
+    end
+
+    def net_entry_flows(entries, target_currency = account.currency)
+      converted_entry_amounts = entries.map { |t| t.amount_money.exchange_to(target_currency, date: t.date) }
+
+      flows = converted_entry_amounts.sum(&:amount)
+
+      account.liability? ? flows * -1 : flows
+    end
+
+    def account_start_date
+      @account_start_date ||= begin
+                                oldest_entry_date = account.entries.chronological.first.try(:date)
+
+                                return Date.current unless oldest_entry_date
+
+                                oldest_entry_is_valuation = account.entries.account_valuations.where(date: oldest_entry_date).exists?
+
+                                oldest_entry_date -= 1 unless oldest_entry_is_valuation
+                                oldest_entry_date
+                              end
+    end
+
+    def calculate_sync_start_date(provided_start_date)
+      [ provided_start_date, account_start_date ].compact.max
+    end
+end

app/models/account/entry.rb

@@ -0,0 +1,218 @@
+class Account::Entry < ApplicationRecord
+  include Monetizable
+
+  monetize :amount
+
+  belongs_to :account
+  belongs_to :transfer, optional: true
+
+  delegated_type :entryable, types: Account::Entryable::TYPES, dependent: :destroy
+  accepts_nested_attributes_for :entryable
+
+  validates :date, :amount, :currency, presence: true
+  validates :date, uniqueness: { scope: [ :account_id, :entryable_type ] }, if: -> { account_valuation? }
+  validates :date, comparison: { greater_than: -> { min_supported_date } }
+  validate :trade_valid?, if: -> { account_trade? }
+
+  scope :chronological, -> { order(:date, :created_at) }
+  scope :reverse_chronological, -> { order(date: :desc, created_at: :desc) }
+  scope :without_transfers, -> { where(marked_as_transfer: false) }
+  scope :with_converted_amount, ->(currency) {
+    # Join with exchange rates to convert the amount to the given currency
+    # If no rate is available, exclude the transaction from the results
+    select(
+      "account_entries.*",
+      "account_entries.amount * COALESCE(er.rate, 1) AS converted_amount"
+    )
+      .joins(sanitize_sql_array([ "LEFT JOIN exchange_rates er ON account_entries.date = er.date AND account_entries.currency = er.from_currency AND er.to_currency = ?", currency ]))
+      .where("er.rate IS NOT NULL OR account_entries.currency = ?", currency)
+  }
+
+  def sync_account_later
+    if destroyed?
+      sync_start_date = previous_entry&.date
+    else
+      sync_start_date = [ date_previously_was, date ].compact.min
+    end
+
+    account.sync_later(start_date: sync_start_date)
+  end
+
+  def inflow?
+    amount <= 0 && account_transaction?
+  end
+
+  def outflow?
+    amount > 0 && account_transaction?
+  end
+
+  def first_of_type?
+    first_entry = account
+                    .entries
+                    .where("entryable_type = ?", entryable_type)
+                    .order(:date)
+                    .first
+
+    first_entry&.id == id
+  end
+
+  def entryable_name_short
+    entryable_type.demodulize.underscore
+  end
+
+  def trend
+    @trend ||= create_trend
+  end
+
+  class << self
+    # arbitrary cutoff date to avoid expensive sync operations
+    def min_supported_date
+      10.years.ago.to_date
+    end
+
+    def daily_totals(entries, currency, period: Period.last_30_days)
+      # Sum spending and income for each day in the period with the given currency
+      select(
+        "gs.date",
+        "COALESCE(SUM(converted_amount) FILTER (WHERE converted_amount > 0), 0) AS spending",
+        "COALESCE(SUM(-converted_amount) FILTER (WHERE converted_amount < 0), 0) AS income"
+      )
+        .from(entries.with_converted_amount(currency), :e)
+        .joins(sanitize_sql([ "RIGHT JOIN generate_series(?, ?, interval '1 day') AS gs(date) ON e.date = gs.date", period.date_range.first, period.date_range.last ]))
+        .group("gs.date")
+    end
+
+    def daily_rolling_totals(entries, currency, period: Period.last_30_days)
+      # Extend the period to include the rolling window
+      period_with_rolling = period.extend_backward(period.date_range.count.days)
+
+      # Aggregate the rolling sum of spending and income based on daily totals
+      rolling_totals = from(daily_totals(entries, currency, period: period_with_rolling))
+                         .select(
+                           "*",
+                           sanitize_sql_array([ "SUM(spending) OVER (ORDER BY date RANGE BETWEEN INTERVAL ? PRECEDING AND CURRENT ROW) as rolling_spend", "#{period.date_range.count} days" ]),
+                           sanitize_sql_array([ "SUM(income) OVER (ORDER BY date RANGE BETWEEN INTERVAL ? PRECEDING AND CURRENT ROW) as rolling_income", "#{period.date_range.count} days" ])
+                         )
+                         .order(:date)
+
+      # Trim the results to the original period
+      select("*").from(rolling_totals).where("date >= ?", period.date_range.first)
+    end
+
+    def mark_transfers!
+      update_all marked_as_transfer: true
+
+      # Attempt to "auto match" and save a transfer if 2 transactions selected
+      Account::Transfer.new(entries: all).save if all.count == 2
+    end
+
+    def bulk_update!(bulk_update_params)
+      bulk_attributes = {
+        date: bulk_update_params[:date],
+        entryable_attributes: {
+          notes: bulk_update_params[:notes],
+          category_id: bulk_update_params[:category_id],
+          merchant_id: bulk_update_params[:merchant_id]
+        }.compact_blank
+      }.compact_blank
+
+      return 0 if bulk_attributes.blank?
+
+      transaction do
+        all.each do |entry|
+          bulk_attributes[:entryable_attributes][:id] = entry.entryable_id if bulk_attributes[:entryable_attributes].present?
+          entry.update! bulk_attributes
+        end
+      end
+
+      all.size
+    end
+
+    def income_total(currency = "USD")
+      without_transfers.account_transactions.includes(:entryable)
+        .where("account_entries.amount <= 0")
+                       .map { |e| e.amount_money.exchange_to(currency, date: e.date, fallback_rate: 0) }
+                       .sum
+    end
+
+    def expense_total(currency = "USD")
+      without_transfers.account_transactions.includes(:entryable)
+                       .where("account_entries.amount > 0")
+                       .map { |e| e.amount_money.exchange_to(currency, date: e.date, fallback_rate: 0) }
+                       .sum
+    end
+
+    def search(params)
+      query = all
+      query = query.where("account_entries.name ILIKE ?", "%#{sanitize_sql_like(params[:search])}%") if params[:search].present?
+      query = query.where("account_entries.date >= ?", params[:start_date]) if params[:start_date].present?
+      query = query.where("account_entries.date <= ?", params[:end_date]) if params[:end_date].present?
+
+      if params[:accounts].present? || params[:account_ids].present?
+        query = query.joins(:account)
+      end
+
+      query = query.where(accounts: { name: params[:accounts] }) if params[:accounts].present?
+      query = query.where(accounts: { id: params[:account_ids] }) if params[:account_ids].present?
+
+      # Search attributes on each entryable to further refine results
+      entryable_ids = entryable_search(params)
+      query = query.where(entryable_id: entryable_ids) unless entryable_ids.nil?
+
+      query
+    end
+
+    private
+
+      def entryable_search(params)
+        entryable_ids = []
+        entryable_search_performed = false
+
+        Account::Entryable::TYPES.map(&:constantize).each do |entryable|
+          next unless entryable.requires_search?(params)
+
+          entryable_search_performed = true
+          entryable_ids += entryable.search(params).pluck(:id)
+        end
+
+        return nil unless entryable_search_performed
+
+        entryable_ids
+      end
+  end
+
+  private
+
+    def previous_entry
+      @previous_entry ||= account
+                            .entries
+                            .where("date < ?", date)
+                            .where("entryable_type = ?", entryable_type)
+                            .order(date: :desc)
+                            .first
+    end
+
+    def create_trend
+      TimeSeries::Trend.new \
+        current: amount_money,
+        previous: previous_entry&.amount_money,
+        favorable_direction: account.favorable_direction
+    end
+
+    def trade_valid?
+      if account_trade.sell?
+        current_qty = account.holding_qty(account_trade.security)
+
+        if current_qty < account_trade.qty.abs
+          # i18n-tasks-use t('activerecord.errors.models.account/entry.attributes.base.invalid_sell_quantity')
+          errors.add(
+            :base,
+            :invalid_sell_quantity,
+            sell_qty: account_trade.qty.abs,
+            ticker: account_trade.security.ticker,
+            current_qty: current_qty
+          )
+        end
+      end
+    end
+end

app/models/account/entry_builder.rb

@@ -0,0 +1,45 @@
+class Account::EntryBuilder
+  include ActiveModel::Model
+
+  TYPES = %w[ income expense buy sell interest transfer_in transfer_out ].freeze
+
+  attr_accessor :type, :date, :qty, :ticker, :price, :amount, :currency, :account, :transfer_account_id
+
+  validates :type, inclusion: { in: TYPES }
+
+  def save
+    if valid?
+      create_builder.save
+    end
+  end
+
+  private
+
+    def create_builder
+      case type
+      when "buy", "sell"
+        create_trade_builder
+      else
+        create_transaction_builder
+      end
+    end
+
+    def create_trade_builder
+      Account::TradeBuilder.new \
+        type: type,
+        date: date,
+        qty: qty,
+        ticker: ticker,
+        price: price,
+        account: account
+    end
+
+    def create_transaction_builder
+      Account::TransactionBuilder.new \
+        type: type,
+        date: date,
+        amount: amount,
+        account: account,
+        transfer_account_id: transfer_account_id
+    end
+end

app/models/account/entryable.rb

@@ -0,0 +1,13 @@
+module Account::Entryable
+  extend ActiveSupport::Concern
+
+  TYPES = %w[ Account::Valuation Account::Transaction Account::Trade ]
+
+  def self.from_type(entryable_type)
+    entryable_type.presence_in(TYPES).constantize
+  end
+
+  included do
+    has_one :entry, as: :entryable, touch: true
+  end
+end

app/models/account/holding.rb

@@ -0,0 +1,48 @@
+class Account::Holding < ApplicationRecord
+  include Monetizable
+
+  monetize :amount
+
+  belongs_to :account
+  belongs_to :security
+
+  validates :qty, :currency, presence: true
+
+  scope :chronological, -> { order(:date) }
+  scope :current, -> { where(date: Date.current).order(amount: :desc) }
+  scope :in_period, ->(period) { period.date_range.nil? ? all : where(date: period.date_range) }
+  scope :known_value, -> { where.not(amount: nil) }
+  scope :for, ->(security) { where(security_id: security).order(:date) }
+
+  delegate :name, to: :security
+  delegate :ticker, to: :security
+
+  def weight
+    return nil unless amount
+
+    portfolio_value = account.holdings.current.known_value.sum(&:amount)
+    portfolio_value.zero? ? 1 : amount / portfolio_value * 100
+  end
+
+  # Basic approximation of cost-basis
+  def avg_cost
+    avg_cost = account.holdings.for(security).where("date <= ?", date).average(:price)
+    Money.new(avg_cost, currency)
+  end
+
+  def trend
+    @trend ||= calculate_trend
+  end
+
+  private
+
+    def calculate_trend
+      return nil unless amount_money
+
+      start_amount = qty * avg_cost
+
+      TimeSeries::Trend.new \
+        current: amount_money,
+        previous: start_amount
+    end
+end

app/models/account/holding/syncer.rb

@@ -0,0 +1,127 @@
+class Account::Holding::Syncer
+  def initialize(account, start_date: nil)
+    @account = account
+    @sync_date_range = calculate_sync_start_date(start_date)..Date.current
+    @portfolio = {}
+
+    load_prior_portfolio if start_date
+  end
+
+  def run
+    holdings = []
+
+    sync_date_range.each do |date|
+      holdings += build_holdings_for_date(date)
+    end
+
+    upsert_holdings holdings
+  end
+
+  private
+
+    attr_reader :account, :sync_date_range
+
+    def sync_entries
+      @sync_entries ||= account.entries
+                               .account_trades
+                               .includes(entryable: :security)
+                               .where("date >= ?", sync_date_range.begin)
+                               .order(:date)
+    end
+
+    def get_cached_price(ticker, date)
+      return nil unless security_prices.key?(ticker)
+
+      price = security_prices[ticker].find { |p| p.date == date }
+      price ? price[:price] : nil
+    end
+
+    def security_prices
+      @security_prices ||= begin
+                             prices = {}
+                             ticker_start_dates = {}
+
+                             sync_entries.each do |entry|
+                               unless ticker_start_dates[entry.account_trade.security.ticker]
+                                 ticker_start_dates[entry.account_trade.security.ticker] = entry.date
+                               end
+                             end
+
+                             ticker_start_dates.each do |ticker, date|
+                               prices[ticker] = Security::Price.find_prices(ticker: ticker, start_date: date, end_date: Date.current)
+                             end
+
+                             prices
+                           end
+    end
+
+    def build_holdings_for_date(date)
+      trades = sync_entries.select { |trade| trade.date == date }
+
+      @portfolio = generate_next_portfolio(@portfolio, trades)
+
+      @portfolio.map do |ticker, holding|
+        trade = trades.find { |trade| trade.account_trade.security_id == holding[:security_id] }
+        trade_price = trade&.account_trade&.price
+
+        price = get_cached_price(ticker, date) || trade_price
+
+        account.observe_missing_price(ticker:, date:) unless price
+
+        account.holdings.build \
+          date: date,
+          security_id: holding[:security_id],
+          qty: holding[:qty],
+          price: price,
+          amount: price ? (price * holding[:qty]) : nil,
+          currency: holding[:currency]
+      end
+    end
+
+    def generate_next_portfolio(prior_portfolio, trade_entries)
+      trade_entries.each_with_object(prior_portfolio) do |entry, new_portfolio|
+        trade = entry.account_trade
+
+        price = trade.price
+        prior_qty = prior_portfolio.dig(trade.security.ticker, :qty) || 0
+        new_qty = prior_qty + trade.qty
+
+        new_portfolio[trade.security.ticker] = {
+          qty: new_qty,
+          price: price,
+          amount: new_qty * price,
+          currency: entry.currency,
+          security_id: trade.security_id
+        }
+      end
+    end
+
+    def upsert_holdings(holdings)
+      current_time = Time.now
+      holdings_to_upsert = holdings.map do |holding|
+        holding.attributes
+               .slice("date", "currency", "qty", "price", "amount", "security_id")
+               .merge("updated_at" => current_time)
+      end
+
+      account.holdings.upsert_all(holdings_to_upsert, unique_by: %i[account_id security_id date currency])
+    end
+
+    def load_prior_portfolio
+      prior_day_holdings = account.holdings.where(date: sync_date_range.begin - 1.day)
+
+      prior_day_holdings.each do |holding|
+        @portfolio[holding.security.ticker] = {
+          qty: holding.qty,
+          price: holding.price,
+          amount: holding.amount,
+          currency: holding.currency,
+          security_id: holding.security_id
+        }
+      end
+    end
+
+    def calculate_sync_start_date(start_date)
+      start_date || account.entries.account_trades.order(:date).first.try(:date) || Date.current
+    end
+end

app/models/account/sync.rb

@@ -0,0 +1,82 @@
+class Account::Sync < ApplicationRecord
+  belongs_to :account
+
+  enum :status, { pending: "pending", syncing: "syncing", completed: "completed", failed: "failed" }
+
+  class << self
+    def for(account, start_date: nil)
+      create! account: account, start_date: start_date
+    end
+
+    def latest
+      order(created_at: :desc).first
+    end
+  end
+
+  def run
+    start!
+
+    account.resolve_stale_issues
+
+    sync_balances
+    sync_holdings
+
+    complete!
+  rescue StandardError => error
+    account.observe_unknown_issue(error)
+    fail! error
+
+    raise error if Rails.env.development?
+  end
+
+  private
+
+    def sync_balances
+      Account::Balance::Syncer.new(account, start_date: start_date).run
+    end
+
+    def sync_holdings
+      Account::Holding::Syncer.new(account, start_date: start_date).run
+    end
+
+    def start!
+      update! status: "syncing", last_ran_at: Time.now
+      broadcast_start
+    end
+
+    def complete!
+      update! status: "completed"
+
+      if account.has_issues?
+        broadcast_result type: "alert", message: account.highest_priority_issue.title
+      else
+        broadcast_result type: "notice", message: "Sync complete"
+      end
+    end
+
+    def fail!(error)
+      update! status: "failed", error: error.message
+      broadcast_result type: "alert", message: I18n.t("account.sync.failed")
+    end
+
+    def broadcast_start
+      broadcast_append_to(
+        [ account.family, :notifications ],
+        target: "notification-tray",
+        partial: "shared/notification",
+        locals: { id: id, type: "processing", message: "Syncing account balances" }
+      )
+    end
+
+    def broadcast_result(type:, message:)
+      broadcast_remove_to account.family, :notifications, target: id # Remove persistent syncing notification
+      broadcast_append_to(
+        [ account.family, :notifications ],
+        target: "notification-tray",
+        partial: "shared/notification",
+        locals: { type: type, message: message }
+      )
+
+      account.family.broadcast_refresh
+    end
+end

app/models/account/syncable.rb

@@ -1,85 +1,29 @@
 module Account::Syncable
   extend ActiveSupport::Concern
 
-  def sync_later(start_date = nil)
-    AccountSyncJob.perform_later(self, start_date)
-  end
-
-  def sync(start_date = nil)
-    update!(status: "syncing")
-
-    sync_exchange_rates
-
-    calc_start_date = start_date - 1.day if start_date.present? && self.balance_on(start_date - 1.day).present?
-
-    calculator = Account::Balance::Calculator.new(self, { calc_start_date: })
-    calculator.calculate
-    self.balances.upsert_all(calculator.daily_balances, unique_by: :index_account_balances_on_account_id_date_currency_unique)
-    self.balances.where("date < ?", effective_start_date).delete_all
-    new_balance = calculator.daily_balances.select { |b| b[:currency] == self.currency }.last[:balance]
-
-    update!(status: "ok", last_sync_date: Date.today, balance: new_balance, sync_errors: calculator.errors, sync_warnings: calculator.warnings)
-  rescue => e
-    update!(status: "error", sync_errors: [ :sync_message_unknown_error ])
-    logger.error("Failed to sync account #{id}: #{e.message}")
-  end
-
-  def can_sync?
-    # Skip account sync if account is not active or the sync process is already running
-    return false unless is_active
-    return false if syncing?
-    # If last_sync_date is blank (i.e. the account has never been synced before) allow syncing
-    return true if last_sync_date.blank?
-
-    # If last_sync_date is not today, allow syncing
-    last_sync_date != Date.today
-  end
-
-  # The earliest date we can calculate a balance for
-  def effective_start_date
-    first_valuation_date = self.valuations.order(:date).pluck(:date).first
-    first_transaction_date = self.transactions.order(:date).pluck(:date).first
-
-    [ first_valuation_date, first_transaction_date&.prev_day ].compact.min || Date.current
-  end
-
-  # Finds all the rate pairs that are required to calculate balances for an account and syncs them
-  def sync_exchange_rates
-    rate_candidates = []
-
-    if multi_currency?
-      transactions_in_foreign_currency = self.transactions.where.not(currency: self.currency).pluck(:currency, :date).uniq
-      transactions_in_foreign_currency.each do |currency, date|
-        rate_candidates << { date: date, from_currency: currency, to_currency: self.currency }
-      end
+  class_methods do
+    def sync(start_date: nil)
+      all.each { |a| a.sync_later(start_date: start_date) }
     end
+  end
 
-    if foreign_currency?
-      (effective_start_date..Date.current).each do |date|
-        rate_candidates << { date: date, from_currency: self.currency, to_currency: self.family.currency }
-      end
-    end
+  def syncing?
+    syncs.syncing.any?
+  end
 
-    existing_rates = ExchangeRate.where(
-      base_currency: rate_candidates.map { |rc| rc[:from_currency] },
-      converted_currency: rate_candidates.map { |rc| rc[:to_currency] },
-      date: rate_candidates.map { |rc| rc[:date] }
-    ).pluck(:base_currency, :converted_currency, :date)
+  def latest_sync_date
+    syncs.where.not(last_ran_at: nil).pluck(:last_ran_at).max&.to_date
+  end
 
-    # Convert to a set for faster lookup
-    existing_rates_set = existing_rates.map { |er| [ er[0], er[1], er[2].to_s ] }.to_set
+  def needs_sync?
+    latest_sync_date.nil? || latest_sync_date < Date.current
+  end
 
-    rate_candidates.each do |rate_candidate|
-      rc_from = rate_candidate[:from_currency]
-      rc_to = rate_candidate[:to_currency]
-      rc_date = rate_candidate[:date]
+  def sync_later(start_date: nil)
+    AccountSyncJob.perform_later(self, start_date: start_date)
+  end
 
-      next if existing_rates_set.include?([ rc_from, rc_to, rc_date.to_s ])
-
-      logger.info "Fetching exchange rate from provider for account #{self.name}: #{self.id} (#{rc_from} to #{rc_to} on #{rc_date})"
-      ExchangeRate.find_rate_or_fetch from: rc_from, to: rc_to, date: rc_date
-    end
-
-    nil
+  def sync(start_date: nil)
+    Account::Sync.for(self, start_date: start_date).run
   end
 end

app/models/account/trade.rb

@@ -0,0 +1,28 @@
+class Account::Trade < ApplicationRecord
+  include Account::Entryable, Monetizable
+
+  monetize :price
+
+  belongs_to :security
+
+  validates :qty, presence: true, numericality: { other_than: 0 }
+  validates :price, :currency, presence: true
+
+  class << self
+    def search(_params)
+      all
+    end
+
+    def requires_search?(_params)
+      false
+    end
+  end
+
+  def sell?
+    qty < 0
+  end
+
+  def buy?
+    qty > 0
+  end
+end

app/models/account/trade_builder.rb

@@ -0,0 +1,46 @@
+class Account::TradeBuilder < Account::EntryBuilder
+  include ActiveModel::Model
+
+  TYPES = %w[ buy sell ].freeze
+
+  attr_accessor :type, :qty, :price, :ticker, :date, :account
+
+  validates :type, :qty, :price, :ticker, :date, presence: true
+  validates :price, numericality: { greater_than: 0 }
+  validates :type, inclusion: { in: TYPES }
+
+  def save
+    if valid?
+      create_entry
+    end
+  end
+
+  private
+
+    def create_entry
+      account.entries.account_trades.create! \
+        date: date,
+        amount: amount,
+        currency: account.currency,
+        entryable: Account::Trade.new(
+          security: security,
+          qty: signed_qty,
+          price: price.to_d,
+          currency: account.currency
+        )
+    end
+
+    def security
+      Security.find_or_create_by(ticker: ticker)
+    end
+
+    def amount
+      price.to_d * signed_qty
+    end
+
+    def signed_qty
+      _qty = qty.to_d
+      _qty = _qty * -1 if type == "sell"
+      _qty
+    end
+end

app/models/account/transaction.rb

@@ -0,0 +1,40 @@
+class Account::Transaction < ApplicationRecord
+  include Account::Entryable
+
+  belongs_to :category, optional: true
+  belongs_to :merchant, optional: true
+  has_many :taggings, as: :taggable, dependent: :destroy
+  has_many :tags, through: :taggings
+
+  accepts_nested_attributes_for :taggings, allow_destroy: true
+
+  scope :active, -> { where(excluded: false) }
+
+  class << self
+    def search(params)
+      query = all
+      query = query.joins("LEFT JOIN categories ON categories.id = account_transactions.category_id").where(categories: { name: params[:categories] }) if params[:categories].present?
+      query = query.joins("LEFT JOIN merchants ON merchants.id = account_transactions.merchant_id").where(merchants: { name: params[:merchants] }) if params[:merchants].present?
+      query
+    end
+
+    def requires_search?(params)
+      searchable_keys.any? { |key| params.key?(key) }
+    end
+
+    private
+
+      def searchable_keys
+        %i[ categories merchants ]
+      end
+  end
+
+  private
+    def previous_transaction_date
+      self.account
+          .transactions
+          .where("date < ?", date)
+          .order(date: :desc)
+          .first&.date
+    end
+end

app/models/account/transaction_builder.rb

@@ -0,0 +1,63 @@
+class Account::TransactionBuilder
+  include ActiveModel::Model
+
+  TYPES = %w[ income expense interest transfer_in transfer_out ].freeze
+
+  attr_accessor :type, :amount, :date, :account, :transfer_account_id
+
+  validates :type, :amount, :date, presence: true
+  validates :type, inclusion: { in: TYPES }
+
+  def save
+    if valid?
+      transfer? ? create_transfer : create_transaction
+    end
+  end
+
+  private
+
+    def transfer?
+      %w[transfer_in transfer_out].include?(type)
+    end
+
+    def create_transfer
+      return create_unlinked_transfer(account.id, signed_amount) unless transfer_account_id
+
+      from_account_id = type == "transfer_in" ? transfer_account_id : account.id
+      to_account_id = type == "transfer_in" ? account.id : transfer_account_id
+
+      outflow = create_unlinked_transfer(from_account_id, signed_amount.abs)
+      inflow = create_unlinked_transfer(to_account_id, signed_amount.abs * -1)
+
+      Account::Transfer.create! entries: [ outflow, inflow ]
+
+      inflow
+    end
+
+    def create_unlinked_transfer(account_id, amount)
+      build_entry(account_id, amount, marked_as_transfer: true).tap(&:save!)
+    end
+
+    def create_transaction
+      build_entry(account.id, signed_amount).tap(&:save!)
+    end
+
+    def build_entry(account_id, amount, marked_as_transfer: false)
+      Account::Entry.new \
+        account_id: account_id,
+        amount: amount,
+        currency: account.currency,
+        date: date,
+        marked_as_transfer: marked_as_transfer,
+        entryable: Account::Transaction.new
+    end
+
+    def signed_amount
+      case type
+      when "expense", "transfer_out"
+        amount.to_d
+      else
+        amount.to_d * -1
+      end
+    end
+end

app/models/account/transfer.rb

@@ -1,21 +1,41 @@
 class Account::Transfer < ApplicationRecord
-  has_many :transactions, dependent: :nullify
+  has_many :entries, dependent: :nullify
 
   validate :net_zero_flows, if: :single_currency_transfer?
   validate :transaction_count, :from_different_accounts, :all_transactions_marked
 
+  def date
+    outflow_transaction&.date
+  end
+
+  def amount_money
+    entries.first&.amount_money&.abs || Money.new(0)
+  end
+
+  def from_name
+    outflow_transaction&.account&.name || I18n.t("account/transfer.from_fallback_name")
+  end
+
+  def to_name
+    inflow_transaction&.account&.name || I18n.t("account/transfer.to_fallback_name")
+  end
+
+  def name
+    I18n.t("account/transfer.name", from_account: from_name, to_account: to_name)
+  end
+
   def inflow_transaction
-    transactions.find { |t| t.inflow? }
+    entries.find { |e| e.inflow? }
   end
 
   def outflow_transaction
-    transactions.find { |t| t.outflow? }
+    entries.find { |e| e.outflow? }
   end
 
   def destroy_and_remove_marks!
     transaction do
-      transactions.each do |t|
-        t.update! marked_as_transfer: false
+      entries.each do |e|
+        e.update! marked_as_transfer: false
       end
 
       destroy!
@@ -24,39 +44,56 @@ class Account::Transfer < ApplicationRecord
 
   class << self
     def build_from_accounts(from_account, to_account, date:, amount:, currency:, name:)
-      outflow = from_account.transactions.build(amount: amount.abs, currency: currency, date: date, name: name, marked_as_transfer: true)
-      inflow = to_account.transactions.build(amount: -amount.abs, currency: currency, date: date, name: name, marked_as_transfer: true)
+      outflow = from_account.entries.build \
+        amount: amount.abs,
+        currency: currency,
+        date: date,
+        name: name,
+        marked_as_transfer: true,
+        entryable: Account::Transaction.new
 
-      new transactions: [ outflow, inflow ]
+      inflow = to_account.entries.build \
+        amount: amount.abs * -1,
+        currency: currency,
+        date: date,
+        name: name,
+        marked_as_transfer: true,
+        entryable: Account::Transaction.new
+
+      new entries: [ outflow, inflow ]
     end
   end
 
   private
 
     def single_currency_transfer?
-      transactions.map(&:currency).uniq.size == 1
+      entries.map { |e| e.currency }.uniq.size == 1
     end
 
     def transaction_count
-      unless transactions.size == 2
-        errors.add :transactions, "must have exactly 2 transactions"
+      unless entries.size == 2
+        # i18n-tasks-use t('activerecord.errors.models.account/transfer.attributes.entries.must_have_exactly_2_entries')
+        errors.add :entries, :must_have_exactly_2_entries
       end
     end
 
     def from_different_accounts
-      accounts = transactions.map(&:account_id).uniq
-      errors.add :transactions, "must be from different accounts" if accounts.size < transactions.size
+      accounts = entries.map { |e| e.account_id }.uniq
+      # i18n-tasks-use t('activerecord.errors.models.account/transfer.attributes.entries.must_be_from_different_accounts')
+      errors.add :entries, :must_be_from_different_accounts if accounts.size < entries.size
     end
 
     def net_zero_flows
-      unless transactions.sum(&:amount).zero?
-        errors.add :transactions, "must have an inflow and outflow that net to zero"
+      unless entries.sum(&:amount).zero?
+        # i18n-tasks-use t('activerecord.errors.models.account/transfer.attributes.entries.must_have_an_inflow_and_outflow_that_net_to_zero')
+        errors.add :entries, :must_have_an_inflow_and_outflow_that_net_to_zero
       end
     end
 
     def all_transactions_marked
-      unless transactions.all?(&:marked_as_transfer)
-        errors.add :transactions, "must be marked as transfer"
+      unless entries.all?(&:marked_as_transfer)
+        # i18n-tasks-use t('activerecord.errors.models.account/transfer.attributes.entries.must_be_marked_as_transfer')
+        errors.add :entries, :must_be_marked_as_transfer
       end
     end
 end

app/models/account/valuation.rb

@@ -1,52 +1,13 @@
 class Account::Valuation < ApplicationRecord
-  include Monetizable
+  include Account::Entryable
 
-  monetize :value
-
-  belongs_to :account
-
-  validates :account, :date, :value, presence: true
-  validates :date, uniqueness: { scope: :account_id }
-
-  scope :chronological, -> { order(:date) }
-  scope :reverse_chronological, -> { order(date: :desc) }
-
-  def trend
-    @trend ||= create_trend
-  end
-
-  def first_of_series?
-    account.valuations.chronological.limit(1).pluck(:date).first == self.date
-  end
-
-  def last_of_series?
-    account.valuations.reverse_chronological.limit(1).pluck(:date).first == self.date
-  end
-
-  def sync_account_later
-    if destroyed?
-      sync_start_date = previous_valuation&.date
-    else
-      sync_start_date = [ date_previously_was, date ].compact.min
+  class << self
+    def search(_params)
+      all
     end
 
-    account.sync_later(sync_start_date)
+    def requires_search?(_params)
+      false
+    end
   end
-
-  private
-
-    def previous_valuation
-      @previous_valuation ||= self.account
-                                .valuations
-                                .where("date < ?", date)
-                                .order(date: :desc)
-                                  .first
-    end
-
-    def create_trend
-      TimeSeries::Trend.new \
-        current: self.value,
-        previous: previous_valuation&.value,
-        favorable_direction: account.favorable_direction
-    end
 end

app/models/category.rb

@@ -1,5 +1,5 @@
 class Category < ApplicationRecord
-  has_many :transactions, dependent: :nullify
+  has_many :transactions, dependent: :nullify, class_name: "Account::Transaction"
   belongs_to :family
 
   validates :name, :color, :family, presence: true

app/models/concerns/accountable.rb

@@ -17,4 +17,20 @@ module Accountable
   included do
     has_one :account, as: :accountable, touch: true
   end
+
+  def value
+    account.balance_money
+  end
+
+  def series(period: Period.all, currency: account.currency)
+    balance_series = account.balances.in_period(period).where(currency: currency)
+
+    if balance_series.empty? && period.date_range.end == Date.current
+      TimeSeries.new([ { date: Date.current, value: account.balance_money.exchange_to(currency) } ])
+    else
+      TimeSeries.from_collection(balance_series, :balance_money)
+    end
+  rescue Money::ConversionError
+    TimeSeries.new([])
+  end
 end

app/models/concerns/issuable.rb

@@ -0,0 +1,58 @@
+module Issuable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :issues, dependent: :destroy, as: :issuable
+  end
+
+  def has_issues?
+    issues.active.any?
+  end
+
+  def resolve_stale_issues
+    issues.active.each do |issue|
+      issue.resolve! if issue.stale?
+    end
+  end
+
+  def observe_unknown_issue(error)
+    observe_issue(
+      Issue::Unknown.new(data: { error: error.message })
+    )
+  end
+
+  def observe_missing_exchange_rates(from:, to:, dates:)
+    observe_issue(
+      Issue::ExchangeRatesMissing.new(data: { from_currency: from, to_currency: to, dates: dates })
+    )
+  end
+
+  def observe_missing_exchange_rate_provider
+    observe_issue(
+      Issue::ExchangeRateProviderMissing.new
+    )
+  end
+
+  def observe_missing_price(ticker:, date:)
+    issue = issues.find_or_create_by(type: Issue::PricesMissing.name, resolved_at: nil)
+    issue.append_missing_price(ticker, date)
+    issue.save!
+  end
+
+  def highest_priority_issue
+    issues.active.ordered.first
+  end
+
+  private
+
+    def observe_issue(new_issue)
+      existing_issue = issues.find_by(type: new_issue.type, resolved_at: nil)
+
+      if existing_issue
+        existing_issue.update!(last_observed_at: Time.current, data: new_issue.data)
+      else
+        new_issue.issuable = self
+        new_issue.save!
+      end
+    end
+end

app/models/concerns/monetizable.rb

@@ -6,7 +6,7 @@ module Monetizable
         fields.each do |field|
           define_method("#{field}_money") do
             value = self.send(field)
-            value.nil? ? nil : Money.new(value, currency)
+            value.nil? ? nil : Money.new(value, currency || Money.default_currency)
           end
         end
       end

app/models/concerns/providable.rb

@@ -6,12 +6,27 @@ module Providable
   extend ActiveSupport::Concern
 
   class_methods do
+    def security_prices_provider
+      synth_provider
+    end
+
     def exchange_rates_provider
-      Provider::Synth.new
+      synth_provider
     end
 
     def git_repository_provider
       Provider::Github.new
     end
+
+    private
+
+      def synth_provider
+        api_key = self_hosted? ? Setting.synth_api_key : ENV["SYNTH_API_KEY"]
+        api_key.present? ? Provider::Synth.new(api_key) : nil
+      end
+
+      def self_hosted?
+        Rails.application.config.app_mode.self_hosted?
+      end
   end
 end

app/models/current.rb

@@ -1,5 +1,5 @@
 class Current < ActiveSupport::CurrentAttributes
   attribute :user
 
-  delegate :family, to: :user
+  delegate :family, to: :user, allow_nil: true
 end

app/models/demo/generator.rb

@@ -0,0 +1,351 @@
+class Demo::Generator
+  COLORS = %w[#e99537 #4da568 #6471eb #db5a54 #df4e92 #c44fe9 #eb5429 #61c9ea #805dee #6ad28a]
+
+  def initialize
+    @family = reset_family!
+  end
+
+  def reset_and_clear_data!
+    clear_data!
+    create_user!
+
+    puts "user reset"
+  end
+
+  def reset_data!
+    Family.transaction do
+      clear_data!
+      create_user!
+
+      puts "user reset"
+
+      create_tags!
+      create_categories!
+      create_merchants!
+
+      puts "tags, categories, merchants created"
+
+      create_credit_card_account!
+      create_checking_account!
+      create_savings_account!
+
+      create_investment_account!
+      create_house_and_mortgage!
+      create_car_and_loan!
+
+      puts "accounts created"
+      puts "Demo data loaded successfully!"
+    end
+  end
+
+  private
+
+    attr_reader :family
+
+    def reset_family!
+      family_id = "d99e3c6e-d513-4452-8f24-dc263f8528c0" # deterministic demo id
+
+      family = Family.find_by(id: family_id)
+      family.destroy! if family
+
+      Family.create!(id: family_id, name: "Demo Family").tap(&:reload)
+    end
+
+    def clear_data!
+      User.find_by_email("user@maybe.local")&.destroy
+      ExchangeRate.destroy_all
+      Security.destroy_all
+      Security::Price.destroy_all
+    end
+
+    def create_user!
+      family.users.create! \
+        email: "user@maybe.local",
+        first_name: "Demo",
+        last_name: "User",
+        password: "password"
+    end
+
+    def create_tags!
+      [ "Trips", "Emergency Fund", "Demo Tag" ].each do |tag|
+        family.tags.create!(name: tag)
+      end
+    end
+
+    def create_categories!
+      categories = [ "Income", "Food & Drink", "Entertainment", "Travel",
+                    "Personal Care", "General Services", "Auto & Transport",
+                    "Rent & Utilities", "Home Improvement", "Shopping" ]
+
+      categories.each do |category|
+        family.categories.create!(name: category, color: COLORS.sample)
+      end
+    end
+
+    def create_merchants!
+      merchants = [ "Amazon", "Starbucks", "McDonald's", "Target", "Costco",
+                   "Home Depot", "Shell", "Whole Foods", "Walgreens", "Nike",
+                   "Uber", "Netflix", "Spotify", "Delta Airlines", "Airbnb", "Sephora" ]
+
+      merchants.each do |merchant|
+        family.merchants.create!(name: merchant, color: COLORS.sample)
+      end
+    end
+
+    def create_credit_card_account!
+      cc = family.accounts.create! \
+        accountable: CreditCard.new,
+        name: "Chase Credit Card",
+        balance: 2300,
+        currency: "USD",
+        institution: family.institutions.find_or_create_by(name: "Chase")
+
+      50.times do
+        merchant = random_family_record(Merchant)
+        create_transaction! \
+          account: cc,
+          name: merchant.name,
+          amount: Faker::Number.positive(to: 200),
+          tags: [ tag_for_merchant(merchant) ],
+          category: category_for_merchant(merchant),
+          merchant: merchant
+      end
+
+      5.times do
+        create_transaction! \
+          account: cc,
+          amount: Faker::Number.negative(from: -1000),
+          name: "CC Payment"
+      end
+    end
+
+    def create_checking_account!
+      checking = family.accounts.create! \
+        accountable: Depository.new,
+        name: "Chase Checking",
+        balance: 15000,
+        currency: "USD",
+        institution: family.institutions.find_or_create_by(name: "Chase")
+
+      10.times do
+        create_transaction! \
+          account: checking,
+          name: "Expense",
+          amount: Faker::Number.positive(from: 100, to: 1000)
+      end
+
+      10.times do
+        create_transaction! \
+          account: checking,
+          amount: Faker::Number.negative(from: -2000),
+          name: "Income",
+          category: income_category
+      end
+    end
+
+    def create_savings_account!
+      savings = family.accounts.create! \
+        accountable: Depository.new,
+        name: "Demo Savings",
+        balance: 40000,
+        currency: "USD",
+        subtype: "savings",
+        institution: family.institutions.find_or_create_by(name: "Chase")
+
+      income_category = categories.find { |c| c.name == "Income" }
+      income_tag = tags.find { |t| t.name == "Emergency Fund" }
+
+      20.times do
+        create_transaction! \
+          account: savings,
+          amount: Faker::Number.negative(from: -2000),
+          tags: [ income_tag ],
+          category: income_category,
+          name: "Income"
+      end
+    end
+
+    def load_securities!
+      # Create an unknown security to simulate edge cases
+      Security.create! ticker: "UNKNOWN", name: "Unknown Demo Stock"
+
+      securities = [
+        { ticker: "AAPL", name: "Apple Inc.", reference_price: 210 },
+        { ticker: "TM", name: "Toyota Motor Corporation", reference_price: 202 },
+        { ticker: "MSFT", name: "Microsoft Corporation", reference_price: 455 }
+      ]
+
+      securities.each do |security_attributes|
+        security = Security.create! security_attributes.except(:reference_price)
+
+        # Load prices for last 2 years
+        (730.days.ago.to_date..Date.current).each do |date|
+          reference = security_attributes[:reference_price]
+          low_price = reference - 20
+          high_price = reference + 20
+          Security::Price.create! \
+            ticker: security.ticker,
+            date: date,
+            price: Faker::Number.positive(from: low_price, to: high_price)
+        end
+      end
+    end
+
+    def create_investment_account!
+      load_securities!
+
+      account = family.accounts.create! \
+        accountable: Investment.new,
+        name: "Robinhood",
+        balance: 100000,
+        currency: "USD",
+        institution: family.institutions.find_or_create_by(name: "Robinhood")
+
+      aapl = Security.find_by(ticker: "AAPL")
+      tm = Security.find_by(ticker: "TM")
+      msft = Security.find_by(ticker: "MSFT")
+      unknown = Security.find_by(ticker: "UNKNOWN")
+
+      # Buy 20 shares of the unknown stock to simulate a stock where we can't fetch security prices
+      account.entries.create! date: 10.days.ago.to_date, amount: 100, currency: "USD", name: "Buy unknown stock", entryable: Account::Trade.new(qty: 20, price: 5, security: unknown, currency: "USD")
+
+      trades = [
+        { security: aapl, qty: 20 }, { security: msft, qty: 10 }, { security: aapl, qty: -5 },
+        { security: msft, qty: -5 }, { security: tm, qty: 10 }, { security: msft, qty: 5 },
+        { security: tm, qty: 10 }, { security: aapl, qty: -5 }, { security: msft, qty: -5 },
+        { security: tm, qty: 10 }, { security: msft, qty: 5 }, { security: aapl, qty: -10 }
+      ]
+
+      trades.each do |trade|
+        date = Faker::Number.positive(to: 730).days.ago.to_date
+        security = trade[:security]
+        qty = trade[:qty]
+        price = Security::Price.find_by(ticker: security.ticker, date: date)&.price || 1
+        name_prefix = qty < 0 ? "Sell " : "Buy "
+
+        account.entries.create! \
+          date: date,
+          amount: qty * price,
+          currency: "USD",
+          name: name_prefix + "#{qty} shares of #{security.ticker}",
+          entryable: Account::Trade.new(qty: qty, price: price, currency: "USD", security: security)
+      end
+    end
+
+    def create_house_and_mortgage!
+      house = family.accounts.create! \
+        accountable: Property.new,
+        name: "123 Maybe Way",
+        balance: 560000,
+        currency: "USD"
+
+      create_valuation!(house, 3.years.ago.to_date, 520000)
+      create_valuation!(house, 2.years.ago.to_date, 540000)
+      create_valuation!(house, 1.years.ago.to_date, 550000)
+
+      family.accounts.create! \
+        accountable: Loan.new,
+        name: "Mortgage",
+        balance: 495000,
+        currency: "USD"
+    end
+
+    def create_car_and_loan!
+      family.accounts.create! \
+        accountable: Vehicle.new,
+        name: "Honda Accord",
+        balance: 18000,
+        currency: "USD"
+
+      family.accounts.create! \
+        accountable: Loan.new,
+        name: "Car Loan",
+        balance: 8000,
+        currency: "USD"
+    end
+
+    def create_transaction!(attributes = {})
+      entry_attributes = attributes.except(:category, :tags, :merchant)
+      transaction_attributes = attributes.slice(:category, :tags, :merchant)
+
+      entry_defaults = {
+        date: Faker::Number.between(from: 0, to: 90).days.ago.to_date,
+        currency: "USD",
+        entryable: Account::Transaction.new(transaction_attributes)
+      }
+
+      Account::Entry.create! entry_defaults.merge(entry_attributes)
+    end
+
+    def create_valuation!(account, date, amount)
+      Account::Entry.create! \
+        account: account,
+        date: date,
+        amount: amount,
+        currency: "USD",
+        entryable: Account::Valuation.new
+    end
+
+    def random_family_record(model)
+      family_records = model.where(family_id: family.id)
+      model.offset(rand(family_records.count)).first
+    end
+
+    def category_for_merchant(merchant)
+      mapping = {
+        "Amazon" => "Shopping",
+        "Starbucks" => "Food & Drink",
+        "McDonald's" => "Food & Drink",
+        "Target" => "Shopping",
+        "Costco" => "Food & Drink",
+        "Home Depot" => "Home Improvement",
+        "Shell" => "Auto & Transport",
+        "Whole Foods" => "Food & Drink",
+        "Walgreens" => "Personal Care",
+        "Nike" => "Shopping",
+        "Uber" => "Auto & Transport",
+        "Netflix" => "Entertainment",
+        "Spotify" => "Entertainment",
+        "Delta Airlines" => "Travel",
+        "Airbnb" => "Travel",
+        "Sephora" => "Personal Care"
+      }
+
+      categories.find { |c| c.name == mapping[merchant.name] }
+    end
+
+    def tag_for_merchant(merchant)
+      mapping = {
+        "Delta Airlines" => "Trips",
+        "Airbnb" => "Trips"
+      }
+
+      tag_from_merchant = tags.find { |t| t.name == mapping[merchant.name] }
+
+      tag_from_merchant || tags.find { |t| t.name == "Demo Tag" }
+    end
+
+    def securities
+      @securities ||= Security.all.to_a
+    end
+
+    def merchants
+      @merchants ||= family.merchants
+    end
+
+    def categories
+      @categories ||= family.categories
+    end
+
+    def tags
+      @tags ||= family.tags
+    end
+
+    def income_tag
+      @income_tag ||= tags.find { |t| t.name == "Emergency Fund" }
+    end
+
+    def income_category
+      @income_category ||= categories.find { |c| c.name == "Income" }
+    end
+end

app/models/exchange_rate.rb

@@ -1,29 +1,28 @@
 class ExchangeRate < ApplicationRecord
   include Provided
 
-  validates :base_currency, :converted_currency, presence: true
+  validates :from_currency, :to_currency, :date, :rate, presence: true
 
   class << self
-    def find_rate(from:, to:, date:)
-      find_by \
-        base_currency: Money::Currency.new(from).iso_code,
-        converted_currency: Money::Currency.new(to).iso_code,
+    def find_rate(from:, to:, date:, cache: true)
+      result = find_by \
+        from_currency: from,
+        to_currency: to,
         date: date
+
+      result || fetch_rate_from_provider(from:, to:, date:, cache:)
     end
 
-    def find_rate_or_fetch(from:, to:, date:)
-      find_rate(from:, to:, date:) || fetch_rate_from_provider(from:, to:, date:)&.tap(&:save!)
-    end
+    def find_rates(from:, to:, start_date:, end_date: Date.current, cache: true)
+      rates = self.where(from_currency: from, to_currency: to, date: start_date..end_date).to_a
+      all_dates = (start_date..end_date).to_a
+      existing_dates = rates.map(&:date)
+      missing_dates = all_dates - existing_dates
+      if missing_dates.any?
+        rates += fetch_rates_from_provider(from:, to:, start_date: missing_dates.first, end_date: missing_dates.last, cache:)
+      end
 
-    def get_rates(from, to, dates)
-      where(base_currency: from, converted_currency: to, date: dates).order(:date)
-    end
-
-    def convert(value:, from:, to:, date:)
-      rate = ExchangeRate.find_by(base_currency: from, converted_currency: to, date:)
-      raise "Conversion from: #{from} to: #{to} on: #{date} not found" unless rate
-
-      value * rate.rate
+      rates
     end
   end
 end

app/models/exchange_rate/provided.rb

@@ -1,25 +1,61 @@
 module ExchangeRate::Provided
   extend ActiveSupport::Concern
+
   include Providable
 
   class_methods do
+    def provider_healthy?
+      exchange_rates_provider.present? && exchange_rates_provider.healthy?
+    end
+
     private
-      def fetch_rate_from_provider(from:, to:, date:)
-        return nil unless exchange_rates_provider.configured?
+
+      def fetch_rates_from_provider(from:, to:, start_date:, end_date: Date.current, cache: false)
+        return [] unless exchange_rates_provider.present?
+
+        response = exchange_rates_provider.fetch_exchange_rates \
+          from: from,
+          to: to,
+          start_date: start_date,
+          end_date: end_date
+
+        if response.success?
+          response.rates.map do |exchange_rate|
+            rate = ExchangeRate.new \
+              from_currency: from,
+              to_currency: to,
+              date: exchange_rate.dig(:date).to_date,
+              rate: exchange_rate.dig(:rate)
+
+            rate.save! if cache
+            rate
+          rescue ActiveRecord::RecordNotUnique
+            next
+          end
+        else
+          []
+        end
+      end
+
+      def fetch_rate_from_provider(from:, to:, date:, cache: false)
+        return nil unless exchange_rates_provider.present?
 
         response = exchange_rates_provider.fetch_exchange_rate \
-          from: Money::Currency.new(from).iso_code,
-          to: Money::Currency.new(to).iso_code,
+          from: from,
+          to: to,
           date: date
 
         if response.success?
-          ExchangeRate.new \
-            base_currency: from,
-            converted_currency: to,
+          rate = ExchangeRate.new \
+            from_currency: from,
+            to_currency: to,
             rate: response.rate,
             date: date
+
+          rate.save! if cache
+          rate
         else
-          raise response.error
+          nil
         end
       end
   end

app/models/family.rb

@@ -4,9 +4,11 @@ class Family < ApplicationRecord
   has_many :accounts, dependent: :destroy
   has_many :institutions, dependent: :destroy
   has_many :transactions, through: :accounts
+  has_many :entries, through: :accounts
   has_many :imports, through: :accounts
   has_many :categories, dependent: :destroy
   has_many :merchants, dependent: :destroy
+  has_many :issues, through: :accounts
 
   def snapshot(period = Period.all)
     query = accounts.active.joins(:balances)
@@ -34,17 +36,18 @@ class Family < ApplicationRecord
 
   def snapshot_account_transactions
     period = Period.last_30_days
-    results = accounts.active.joins(:transactions)
-                .select(
-                  "accounts.*",
-                  "COALESCE(SUM(amount) FILTER (WHERE amount > 0), 0) AS spending",
-                  "COALESCE(SUM(-amount) FILTER (WHERE amount < 0), 0) AS income"
-                )
-                .where("transactions.date >= ?", period.date_range.begin)
-                .where("transactions.date <= ?", period.date_range.end)
-                .where("transactions.marked_as_transfer = ?", false)
-                .group("id")
-                .to_a
+    results = accounts.active.joins(:entries)
+                      .select(
+                        "accounts.*",
+                        "COALESCE(SUM(account_entries.amount) FILTER (WHERE account_entries.amount > 0), 0) AS spending",
+                        "COALESCE(SUM(-account_entries.amount) FILTER (WHERE account_entries.amount < 0), 0) AS income"
+                      )
+                      .where("account_entries.date >= ?", period.date_range.begin)
+                      .where("account_entries.date <= ?", period.date_range.end)
+                      .where("account_entries.marked_as_transfer = ?", false)
+                      .where("account_entries.entryable_type = ?", "Account::Transaction")
+                      .group("id")
+                      .to_a
 
     results.each do |r|
       r.define_singleton_method(:savings_rate) do
@@ -60,7 +63,8 @@ class Family < ApplicationRecord
   end
 
   def snapshot_transactions
-    rolling_totals = Transaction.daily_rolling_totals(transactions, period: Period.last_30_days, currency: self.currency)
+    candidate_entries = entries.account_transactions.without_transfers
+    rolling_totals = Account::Entry.daily_rolling_totals(candidate_entries, self.currency, period: Period.last_30_days)
 
     spending = []
     income = []
@@ -89,23 +93,29 @@ class Family < ApplicationRecord
     }
   end
 
-  def effective_start_date
-    accounts.active.joins(:balances).minimum("account_balances.date") || Date.current
-  end
-
   def net_worth
     assets - liabilities
   end
 
   def assets
-    Money.new(accounts.active.assets.map { |account| account.balance_money.exchange_to(currency) || 0 }.sum, currency)
+    Money.new(accounts.active.assets.map { |account| account.balance_money.exchange_to(currency, fallback_rate: 0) }.sum, currency)
   end
 
   def liabilities
-    Money.new(accounts.active.liabilities.map { |account| account.balance_money.exchange_to(currency) || 0 }.sum, currency)
+    Money.new(accounts.active.liabilities.map { |account| account.balance_money.exchange_to(currency, fallback_rate: 0) }.sum, currency)
   end
 
-  def sync_accounts
-    accounts.each { |account| account.sync_later if account.can_sync? }
+  def sync(start_date: nil)
+    accounts.active.each do |account|
+      if account.needs_sync?
+        account.sync_later(start_date: start_date || account.last_sync_date)
+      end
+    end
+
+    update! last_synced_at: Time.now
+  end
+
+  def needs_sync?
+    last_synced_at.nil? || last_synced_at.to_date < Date.current
   end
 end

app/models/import.rb

@@ -2,6 +2,7 @@ class Import < ApplicationRecord
   belongs_to :account
 
   validate :raw_csv_must_be_parsable
+  validates :col_sep, inclusion: { in: Csv::COL_SEP_LIST }
 
   before_save :initialize_csv, if: :should_initialize_csv?
 
@@ -38,7 +39,7 @@ class Import < ApplicationRecord
   end
 
   def get_selected_header_for_field(field)
-    column_mappings&.dig(field) || field.key
+    column_mappings&.dig(field.key) || field.key
   end
 
   def update_csv!(row_idx:, col_idx:, value:)
@@ -88,7 +89,7 @@ class Import < ApplicationRecord
 
     def get_raw_csv
       return nil if raw_csv_str.nil?
-      Import::Csv.new(raw_csv_str)
+      Import::Csv.new(raw_csv_str, col_sep:)
     end
 
     def should_initialize_csv?
@@ -102,7 +103,7 @@ class Import < ApplicationRecord
 
     # Uses the user-provided raw CSV + mappings to generate a normalized CSV for the import
     def generate_normalized_csv(csv_str)
-      Import::Csv.create_with_field_mappings(csv_str, expected_fields, column_mappings)
+      Import::Csv.create_with_field_mappings(csv_str, expected_fields, column_mappings, col_sep)
     end
 
     def update_csv(row_idx, col_idx, value)
@@ -111,7 +112,7 @@ class Import < ApplicationRecord
     end
 
     def generate_transactions
-      transactions = []
+      transaction_entries = []
       category_cache = {}
       tag_cache = {}
 
@@ -126,18 +127,17 @@ class Import < ApplicationRecord
 
         category = category_cache[category_name] ||= account.family.categories.find_or_initialize_by(name: category_name) if category_name.present?
 
-        txn = account.transactions.build \
+        entry = account.entries.build \
           name: row["name"].presence || FALLBACK_TRANSACTION_NAME,
           date: Date.iso8601(row["date"]),
-          category: category,
-          tags: tags,
-          amount: BigDecimal(row["amount"]) * -1, # User inputs amounts with opposite signage of our internal representation
-          currency: account.currency
+          currency: account.currency,
+          amount: BigDecimal(row["amount"]) * -1,
+          entryable: Account::Transaction.new(category: category, tags: tags)
 
-        transactions << txn
+        transaction_entries << entry
       end
 
-      transactions
+      transaction_entries
     end
 
     def create_expected_fields
@@ -177,9 +177,10 @@ class Import < ApplicationRecord
 
     def raw_csv_must_be_parsable
       begin
-        CSV.parse(raw_csv_str || "")
+        CSV.parse(raw_csv_str || "", col_sep:)
       rescue CSV::MalformedCSVError
-        errors.add(:raw_csv_str, "is not a valid CSV format")
+        # i18n-tasks-use t('activerecord.errors.models.import.attributes.raw_csv_str.invalid_csv_format')
+        errors.add(:raw_csv_str, :invalid_csv_format)
       end
     end
 end

app/models/import/csv.rb

@@ -1,12 +1,20 @@
 class Import::Csv
-  def self.parse_csv(csv_str)
-    CSV.parse((csv_str || "").strip, headers: true, converters: [ ->(str) { str&.strip } ])
+  DEFAULT_COL_SEP = ",".freeze
+  COL_SEP_LIST = [ DEFAULT_COL_SEP, ";" ].freeze
+
+  def self.parse_csv(csv_str, col_sep: DEFAULT_COL_SEP)
+    CSV.parse(
+      csv_str&.strip || "",
+      headers: true,
+      col_sep:,
+      converters: [ ->(str) { str&.strip } ]
+    )
   end
 
-  def self.create_with_field_mappings(raw_csv_str, fields, field_mappings)
-    raw_csv = self.parse_csv(raw_csv_str)
+  def self.create_with_field_mappings(raw_csv_str, fields, field_mappings, col_sep = DEFAULT_COL_SEP)
+    raw_csv = self.parse_csv(raw_csv_str, col_sep:)
 
-    generated_csv_str = CSV.generate headers: fields.map { |f| f.key }, write_headers: true do |csv|
+    generated_csv_str = CSV.generate headers: fields.map { |f| f.key }, write_headers: true, col_sep: do |csv|
       raw_csv.each do |row|
         row_values = []
 
@@ -22,18 +30,19 @@ class Import::Csv
       end
     end
 
-    new(generated_csv_str)
+    new(generated_csv_str, col_sep:)
   end
 
-  attr_reader :csv_str
+  attr_reader :csv_str, :col_sep
 
-  def initialize(csv_str, column_validators: nil)
+  def initialize(csv_str, column_validators: nil, col_sep: DEFAULT_COL_SEP)
     @csv_str = csv_str
+    @col_sep = col_sep
     @column_validators = column_validators || {}
   end
 
   def table
-    @table ||= self.class.parse_csv(csv_str)
+    @table ||= self.class.parse_csv(csv_str, col_sep:)
   end
 
   def update_cell(row_idx, col_idx, value)

app/models/investment.rb

@@ -13,4 +13,35 @@ class Investment < ApplicationRecord
     [ "Roth 401k", "roth_401k" ],
     [ "Angel", "angel" ]
   ].freeze
+
+  def value
+    account.balance_money + holdings_value
+  end
+
+  def holdings_value
+    account.holdings.current.known_value.sum(&:amount) || Money.new(0, account.currency)
+  end
+
+  def series(period: Period.all, currency: account.currency)
+    balance_series = account.balances.in_period(period).where(currency: currency)
+    holding_series = account.holdings.known_value.in_period(period).where(currency: currency)
+
+    holdings_by_date = holding_series.group_by(&:date).transform_values do |holdings|
+      holdings.sum(&:amount)
+    end
+
+    combined_series = balance_series.map do |balance|
+      holding_amount = holdings_by_date[balance.date] || 0
+
+      { date: balance.date, value: Money.new(balance.balance + holding_amount, currency) }
+    end
+
+    if combined_series.empty? && period.date_range.end == Date.current
+      TimeSeries.new([ { date: Date.current, value: self.value.exchange_to(currency) } ])
+    else
+      TimeSeries.new(combined_series)
+    end
+  rescue Money::ConversionError
+    TimeSeries.new([])
+  end
 end

app/models/issue.rb

@@ -0,0 +1,35 @@
+class Issue < ApplicationRecord
+  belongs_to :issuable, polymorphic: true
+
+  after_initialize :set_default_severity
+
+  enum :severity, { critical: 1, error: 2, warning: 3, info: 4 }
+
+  validates :severity, presence: true
+
+  scope :active, -> { where(resolved_at: nil) }
+  scope :ordered, -> { order(:severity) }
+
+  def title
+    model_name.human
+  end
+
+  # The conditions that must be met for an issue to be fixed
+  def stale?
+    raise NotImplementedError, "#{self.class} must implement #{__method__}"
+  end
+
+  def resolve!
+    update!(resolved_at: Time.current)
+  end
+
+  def default_severity
+    :warning
+  end
+
+  private
+
+    def set_default_severity
+      self.severity ||= default_severity
+    end
+end

app/models/issue/exchange_rate_provider_missing.rb

@@ -0,0 +1,9 @@
+class Issue::ExchangeRateProviderMissing < Issue
+  def default_severity
+    :error
+  end
+
+  def stale?
+    ExchangeRate.provider_healthy?
+  end
+end

app/models/issue/exchange_rates_missing.rb

@@ -0,0 +1,15 @@
+class Issue::ExchangeRatesMissing < Issue
+  store_accessor :data, :from_currency, :to_currency, :dates
+
+  validates :from_currency, :to_currency, :dates, presence: true
+
+  def stale?
+    if dates.length == 1
+      ExchangeRate.find_rate(from: from_currency, to: to_currency, date: dates.first).present?
+    else
+      sorted_dates = dates.sort
+      rates = ExchangeRate.find_rates(from: from_currency, to: to_currency, start_date: sorted_dates.first, end_date: sorted_dates.last)
+      rates.length == dates.length
+    end
+  end
+end

app/models/issue/prices_missing.rb

@@ -0,0 +1,33 @@
+class Issue::PricesMissing < Issue
+  store_accessor :data, :missing_prices
+
+  after_initialize :initialize_missing_prices
+
+  validates :missing_prices, presence: true
+
+  def append_missing_price(ticker, date)
+    missing_prices[ticker] ||= []
+    missing_prices[ticker] << date
+  end
+
+  def stale?
+    stale = true
+
+    missing_prices.each do |ticker, dates|
+      next unless issuable.owns_ticker?(ticker)
+
+      oldest_date = dates.min
+      expected_price_count = (oldest_date..Date.current).count
+      prices = Security::Price.find_prices(ticker: ticker, start_date: oldest_date)
+      stale = false if prices.count < expected_price_count
+    end
+
+    stale
+  end
+
+  private
+
+    def initialize_missing_prices
+      self.missing_prices ||= {}
+    end
+end

app/models/issue/unknown.rb

@@ -0,0 +1,11 @@
+class Issue::Unknown < Issue
+  def default_severity
+    :warning
+  end
+
+  # Unknown issues are always stale because we only want to show them
+  # to the user once.  If the same error occurs again, we'll create a new instance.
+  def stale?
+    true
+  end
+end

app/models/merchant.rb

@@ -1,5 +1,5 @@
 class Merchant < ApplicationRecord
-  has_many :transactions, dependent: :nullify
+  has_many :transactions, dependent: :nullify, class_name: "Account::Transaction"
   belongs_to :family
 
   validates :name, :color, :family, presence: true

app/models/provider/synth.rb

@@ -1,18 +1,44 @@
 class Provider::Synth
   include Retryable
 
-  def initialize(api_key = ENV["SYNTH_API_KEY"])
-    @api_key = api_key || ENV["SYNTH_API_KEY"]
+  def initialize(api_key)
+    @api_key = api_key
   end
 
-  def configured?
-    @api_key.present?
+  def healthy?
+    response = client.get("#{base_url}/user")
+    JSON.parse(response.body).dig("id").present?
+  end
+
+  def fetch_security_prices(ticker:, start_date:, end_date:)
+    prices = paginate(
+      "#{base_url}/tickers/#{ticker}/open-close",
+      start_date: start_date,
+      end_date: end_date
+    ) do |body|
+      body.dig("prices").map do |price|
+        {
+          date: price.dig("date"),
+          price: price.dig("close")&.to_f || price.dig("open")&.to_f,
+          currency: "USD"
+        }
+      end
+    end
+
+    SecurityPriceResponse.new \
+      prices: prices,
+      success?: true,
+      raw_response: prices.to_json
+  rescue StandardError => error
+    SecurityPriceResponse.new \
+      success?: false,
+      error: error,
+      raw_response: error
   end
 
   def fetch_exchange_rate(from:, to:, date:)
     retrying Provider::Base.known_transient_errors do |on_last_attempt|
-      response = Faraday.get("#{base_url}/rates/historical") do |req|
-        req.headers["Authorization"] = "Bearer #{api_key}"
+      response = client.get("#{base_url}/rates/historical") do |req|
         req.params["date"] = date.to_s
         req.params["from"] = from
         req.params["to"] = to
@@ -36,20 +62,100 @@ class Provider::Synth
     end
   end
 
+  def fetch_exchange_rates(from:, to:, start_date:, end_date:)
+    exchange_rates = paginate(
+      "#{base_url}/rates/historical-range",
+      from: from,
+      to: to,
+      date_start: start_date.to_s,
+      date_end: end_date.to_s
+    ) do |body|
+      body.dig("data").map do |exchange_rate|
+        {
+          date: exchange_rate.dig("date"),
+          rate: exchange_rate.dig("rates", to)
+        }
+      end
+    end
+
+    ExchangeRatesResponse.new \
+      rates: exchange_rates,
+      success?: true,
+      raw_response: exchange_rates.to_json
+  rescue StandardError => error
+    ExchangeRatesResponse.new \
+      success?: false,
+      error: error,
+      raw_response: error
+  end
+
   private
+
     attr_reader :api_key
 
     ExchangeRateResponse = Struct.new :rate, :success?, :error, :raw_response, keyword_init: true
+    SecurityPriceResponse = Struct.new :prices, :success?, :error, :raw_response, keyword_init: true
+    ExchangeRatesResponse = Struct.new :rates, :success?, :error, :raw_response, keyword_init: true
 
     def base_url
       "https://api.synthfinance.com"
     end
 
+    def app_name
+      "maybe_app"
+    end
+
+    def app_type
+      Rails.application.config.app_mode
+    end
+
+    def client
+      @client ||= Faraday.new(url: base_url) do |faraday|
+        faraday.headers["Authorization"] = "Bearer #{api_key}"
+        faraday.headers["X-Source"] = app_name
+        faraday.headers["X-Source-Type"] = app_type
+      end
+    end
+
     def build_error(response)
       Provider::Base::ProviderError.new(<<~ERROR)
-        Failed to fetch exchange rate from #{self.class}
+        Failed to fetch data from #{self.class}
           Status: #{response.status}
           Body: #{response.body.inspect}
       ERROR
     end
+
+    def fetch_page(url, page, params = {})
+      client.get(url) do |req|
+        req.headers["Authorization"] = "Bearer #{api_key}"
+        params.each { |k, v| req.params[k.to_s] = v.to_s }
+        req.params["page"] = page
+      end
+    end
+
+    def paginate(url, params = {})
+      results = []
+      page = 1
+      current_page = 0
+      total_pages = 1
+
+      while current_page < total_pages
+        response = fetch_page(url, page, params)
+
+        if response.success?
+          body = JSON.parse(response.body)
+          page_results = yield(body)
+          results.concat(page_results)
+
+          current_page = body.dig("paging", "current_page")
+          total_pages = body.dig("paging", "total_pages")
+
+          page += 1
+        else
+          raise build_error(response)
+        end
+      end
+
+      results
+    end
 end

app/models/security.rb

@@ -0,0 +1,13 @@
+class Security < ApplicationRecord
+  before_save :upcase_ticker
+
+  has_many :trades, dependent: :nullify, class_name: "Account::Trade"
+
+  validates :ticker, presence: true, uniqueness: { case_sensitive: false }
+
+  private
+
+    def upcase_ticker
+      self.ticker = ticker.upcase
+    end
+end

app/models/security/price.rb

@@ -0,0 +1,34 @@
+class Security::Price < ApplicationRecord
+  include Provided
+
+  before_save :upcase_ticker
+
+  validates :ticker, presence: true, uniqueness: { scope: :date, case_sensitive: false }
+
+  class << self
+    def find_price(ticker:, date:, cache: true)
+      result = find_by(ticker:, date:)
+
+      result || fetch_price_from_provider(ticker:, date:, cache:)
+    end
+
+    def find_prices(ticker:, start_date:, end_date: Date.current, cache: true)
+      prices = where(ticker:, date: start_date..end_date).to_a
+      all_dates = (start_date..end_date).to_a.to_set
+      existing_dates = prices.map(&:date).to_set
+      missing_dates = (all_dates - existing_dates).sort
+
+      if missing_dates.any?
+        prices += fetch_prices_from_provider(ticker:, start_date: missing_dates.first, end_date: missing_dates.last, cache:)
+      end
+
+      prices
+    end
+  end
+
+  private
+
+    def upcase_ticker
+      self.ticker = ticker.upcase
+    end
+end

app/models/security/price/provided.rb

@@ -0,0 +1,55 @@
+module Security::Price::Provided
+  extend ActiveSupport::Concern
+
+  include Providable
+
+  class_methods do
+    private
+
+      def fetch_price_from_provider(ticker:, date:, cache: false)
+        return nil unless security_prices_provider.present?
+
+        response = security_prices_provider.fetch_security_prices \
+          ticker: ticker,
+          start_date: date,
+          end_date: date
+
+        if response.success? && response.prices.size > 0
+          price = Security::Price.new \
+            ticker: ticker,
+            date: response.prices.first[:date],
+            price: response.prices.first[:price],
+            currency: response.prices.first[:currency]
+
+          price.save! if cache
+          price
+        else
+          nil
+        end
+      end
+
+      def fetch_prices_from_provider(ticker:, start_date:, end_date:, cache: false)
+        return [] unless security_prices_provider.present?
+
+        response = security_prices_provider.fetch_security_prices \
+          ticker: ticker,
+          start_date: start_date,
+          end_date: end_date
+
+        if response.success?
+          response.prices.map do |price|
+            new_price = Security::Price.new \
+              ticker: ticker,
+              date: price[:date],
+              price: price[:price],
+              currency: price[:currency]
+
+            new_price.save! if cache
+            new_price
+          end
+        else
+          []
+        end
+      end
+  end
+end

app/models/setting.rb

@@ -20,6 +20,8 @@ class Setting < RailsSettings::Base
   field :app_domain, type: :string, default: ENV["APP_DOMAIN"]
   field :email_sender, type: :string, default: ENV["EMAIL_SENDER"]
 
+  field :synth_api_key, type: :string, default: ENV["SYNTH_API_KEY"]
+
   scope :smtp_settings do
     field :smtp_host, type: :string, read_only: true, default: ENV["SMTP_ADDRESS"]
     field :smtp_port, type: :string, read_only: true, default: ENV["SMTP_PORT"]