feat: Allow to create rules to mark transactions as transfers or payments (#920)

* feat: Allow to create rules to define transfer or payments

* fix: lint issues

* Update app/models/rule/action_executor/set_as_transfer_or_payment.rb

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Signed-off-by: Alessio Cappa <104093777+alessiocappa@users.noreply.github.com>

* fix: indentation issue

* fix: add explicit return

* fix: add guard on target_account

* fix: use local variable for transfer and revert explicit return as it doesn't work

* fix: Adjust transaction naming

---------

Signed-off-by: Alessio Cappa <104093777+alessiocappa@users.noreply.github.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

app/models/rule/action_executor/set_as_transfer_or_payment.rb

@@ -0,0 +1,48 @@
+class Rule::ActionExecutor::SetAsTransferOrPayment < Rule::ActionExecutor
+  def type
+    "select"
+  end
+
+  def options
+    family.accounts.alphabetically.pluck(:name, :id)
+  end
+
+  def execute(transaction_scope, value: nil, ignore_attribute_locks: false, rule_run: nil)
+    target_account = family.accounts.find_by_id(value)
+    return 0 unless target_account
+    scope = transaction_scope.with_entry
+
+    count_modified_resources(scope) do |txn|
+      entry = txn.entry
+      unless txn.transfer?
+        transfer = build_transfer(target_account, entry)
+        Transfer.transaction do
+          transfer.save!
+          transfer.outflow_transaction.update!(kind: Transfer.kind_for_account(transfer.outflow_transaction.entry.account))
+          transfer.inflow_transaction.update!(kind: "funds_movement")
+        end
+
+        transfer.sync_account_later
+      end
+    end
+  end
+
+  private
+    def build_transfer(target_account, entry)
+      missing_transaction = Transaction.new(
+        entry: target_account.entries.build(
+          amount: entry.amount * -1,
+          currency: entry.currency,
+          date: entry.date,
+          name: "#{target_account.liability? ? "Payment" : "Transfer"} #{entry.amount.negative? ? "to #{target_account.name}" : "from #{entry.account.name}"}",
+        )
+      )
+
+      transfer = Transfer.find_or_initialize_by(
+        inflow_transaction: entry.amount.positive? ? missing_transaction : entry.transaction,
+        outflow_transaction: entry.amount.positive? ? entry.transaction : missing_transaction
+      )
+      transfer.status = "confirmed"
+      transfer
+    end
+end

app/models/rule/registry/transaction_resource.rb

@@ -22,7 +22,8 @@ class Rule::Registry::TransactionResource < Rule::Registry
       Rule::ActionExecutor::SetTransactionMerchant.new(rule),
       Rule::ActionExecutor::SetTransactionName.new(rule),
       Rule::ActionExecutor::SetInvestmentActivityLabel.new(rule),
-      Rule::ActionExecutor::ExcludeTransaction.new(rule)
+      Rule::ActionExecutor::ExcludeTransaction.new(rule),
+      Rule::ActionExecutor::SetAsTransferOrPayment.new(rule)
     ]
 
     if ai_enabled?