Add CRUD operations for Lamassu transactions: implement create, retrieve, and update functions for storing processed Lamassu transactions in the database. Enhance migration script to create the necessary database table and update models to include transaction data structures. Integrate transaction storage into the LamassuTransactionProcessor for improved audit and UI display capabilities.

migrations.py

@@ -212,3 +212,32 @@ async def m011_add_commission_wallet_to_lamassu_config(db):
         ADD COLUMN commission_wallet_id TEXT;
         """
     )
+
+
+async def m012_create_lamassu_transactions_table(db):
+    """
+    Create table to store processed Lamassu transactions for audit and UI display.
+    """
+    await db.execute(
+        f"""
+        CREATE TABLE myextension.lamassu_transactions (
+            id TEXT PRIMARY KEY NOT NULL,
+            lamassu_transaction_id TEXT NOT NULL UNIQUE,
+            fiat_amount INTEGER NOT NULL,
+            crypto_amount INTEGER NOT NULL,
+            commission_percentage REAL NOT NULL,
+            discount REAL NOT NULL DEFAULT 0.0,
+            effective_commission REAL NOT NULL,
+            commission_amount_sats INTEGER NOT NULL,
+            base_amount_sats INTEGER NOT NULL,
+            exchange_rate REAL NOT NULL,
+            crypto_code TEXT NOT NULL DEFAULT 'BTC',
+            fiat_code TEXT NOT NULL DEFAULT 'GTQ',
+            device_id TEXT,
+            transaction_time TIMESTAMP NOT NULL,
+            processed_at TIMESTAMP NOT NULL DEFAULT {db.timestamp_now},
+            clients_count INTEGER NOT NULL DEFAULT 0,
+            distributions_total_sats INTEGER NOT NULL DEFAULT 0
+        );
+        """
+    )