New Design System + Codebase Refresh (#1823)

Since the very first 0.1.0-alpha.1 release, we've been moving quickly to add new features to the Maybe app. In doing so, some parts of the codebase have become outdated, unnecessary, or overly-complex as a natural result of this feature prioritization.

Now that "core" Maybe is complete, we're moving into a second phase of development where we'll be working hard to improve the accuracy of existing features and build additional features on top of "core". This PR is a quick overhaul of the existing codebase aimed to:

- Establish the brand new and simplified dashboard view (pictured above)
- Establish and move towards the conventions introduced in Cursor rules and project design overview #1788
- Consolidate layouts and improve the performance of layout queries
- Organize the core models of the Maybe domain (i.e. Account::Entry, Account::Transaction, etc.) and break out specific traits of each model into dedicated concerns for better readability
- Remove stale / dead code from codebase
- Remove overly complex code paths in favor of simpler ones

app/models/account/entry_search.rb

@@ -12,29 +12,44 @@ class Account::EntrySearch
   attribute :end_date, :string
 
   class << self
-    def from_entryable_search(entryable_search)
-      new(entryable_search.attributes.slice(*attribute_names))
+    def apply_search_filter(scope, search)
+      return scope if search.blank?
+
+      query = scope
+      query = query.where("account_entries.name ILIKE :search OR account_entries.enriched_name ILIKE :search",
+        search: "%#{ActiveRecord::Base.sanitize_sql_like(search)}%"
+      )
+      query
     end
-  end
 
-  def build_query(scope)
-    query = scope
+    def apply_date_filters(scope, start_date, end_date)
+      return scope if start_date.blank? && end_date.blank?
 
-    query = query.where("account_entries.name ILIKE :search OR account_entries.enriched_name ILIKE :search",
-      search: "%#{ActiveRecord::Base.sanitize_sql_like(search)}%"
-    ) if search.present?
-    query = query.where("account_entries.date >= ?", start_date) if start_date.present?
-    query = query.where("account_entries.date <= ?", end_date) if end_date.present?
+      query = scope
+      query = query.where("account_entries.date >= ?", start_date) if start_date.present?
+      query = query.where("account_entries.date <= ?", end_date) if end_date.present?
+      query
+    end
+
+    def apply_type_filter(scope, types)
+      return scope if types.blank?
+
+      query = scope
 
-    if types.present?
       if types.include?("income") && !types.include?("expense")
         query = query.where("account_entries.amount < 0")
       elsif types.include?("expense") && !types.include?("income")
         query = query.where("account_entries.amount >= 0")
       end
+
+      query
     end
 
-    if amount.present? && amount_operator.present?
+    def apply_amount_filter(scope, amount, amount_operator)
+      return scope if amount.blank? || amount_operator.blank?
+
+      query = scope
+
       case amount_operator
       when "equal"
         query = query.where("ABS(ABS(account_entries.amount) - ?) <= 0.01", amount.to_f.abs)
@@ -43,15 +58,27 @@ class Account::EntrySearch
       when "greater"
         query = query.where("ABS(account_entries.amount) > ?", amount.to_f.abs)
       end
+
+      query
     end
 
-    if accounts.present? || account_ids.present?
-      query = query.joins(:account)
+    def apply_accounts_filter(scope, accounts, account_ids)
+      return scope if accounts.blank? && account_ids.blank?
+
+      query = scope
+      query = query.where(accounts: { name: accounts }) if accounts.present?
+      query = query.where(accounts: { id: account_ids }) if account_ids.present?
+      query
     end
+  end
 
-    query = query.where(accounts: { name: accounts }) if accounts.present?
-    query = query.where(accounts: { id: account_ids }) if account_ids.present?
-
+  def build_query(scope)
+    query = scope.joins(:account)
+    query = self.class.apply_search_filter(query, search)
+    query = self.class.apply_date_filters(query, start_date, end_date)
+    query = self.class.apply_type_filter(query, types)
+    query = self.class.apply_amount_filter(query, amount, amount_operator)
+    query = self.class.apply_accounts_filter(query, accounts, account_ids)
     query
   end
 end