misc(fee): Delete zero amount finalized fees

db/migrate/20250103124802_drop_zero_amount_fees.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class DropZeroAmountFees < ActiveRecord::Migration[7.1]
+  disable_ddl_transaction!
+
+  def change
+    sql = <<~SQL
+      DELETE FROM fees
+      USING invoices
+      WHERE
+        fees.invoice_id = invoices.id
+        AND invoices.status IN (1, 2, 6) -- finalized, voided and closed
+        AND fees.fee_type = 0 -- charge
+        AND fees.amount_cents = 0
+        AND fees.units = 0
+        AND fees.pay_in_advance = false
+        AND fees.true_up_parent_fee_id IS NULL
+        AND fees.id NOT IN (
+          SELECT f.true_up_parent_fee_id
+          FROM fees f
+          WHERE f.true_up_parent_fee_id IS NOT NULL
+        )
+        AND fees.id NOT IN (
+          SELECT fee_id
+          FROM adjusted_fees
+          WHERE adjusted_fees.fee_id IS NOT NULL
+        )
+    SQL
+
+    ApplicationRecord.connection.execute(sql)
+  end
+end