add scripts to migrate the data

scripts/init_payments_table.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+DB_NAME="your_database_name"
+DB_USER="your_username"
+DB_HOST="your_host"      # e.g., localhost or an IP address
+DB_PORT="your_port"      # Default PostgreSQL port is 5432
+SQL_FILE="payment_migration.sql"  # File containing the SQL script
+
+# Check if the SQL file exists
+if [ ! -f "$SQL_FILE" ]; then
+  echo "Error: SQL file '$SQL_FILE' not found."
+  exit 1
+fi
+
+# Execute the SQL script
+psql -h "$DB_HOST" -p "$DB_PORT" -U "$DB_USER" -d "$DB_NAME" -f "$SQL_FILE"
+
+# Check the result of the execution
+if [ $? -eq 0 ]; then
+  echo "SQL script executed successfully."
+else
+  echo "Error: Failed to execute SQL script."
+  exit 1
+fi

scripts/payment_migration.sql

@@ -0,0 +1,10 @@
+INSERT INTO payments (created_at, updated_at, deleted_at, booking_id, amount, payment_method)
+SELECT MIN(i.created_at)         AS created_at, -- Use the earliest created_at timestamp for this payment
+       MAX(i.updated_at)         AS updated_at, -- Use the latest updated_at timestamp for this payment
+       i.deleted_at,                            -- Use the deleted_at timestamp from items
+       i.booking_id,                            -- The associated booking_id
+       SUM(i.price * i.quantity) AS amount,     -- Calculate total amount from price * quantity
+       i.payment_method                         -- The payment method
+FROM items i
+WHERE i.deleted_at IS NULL -- Exclude soft-deleted items
+GROUP BY i.booking_id, i.payment_method, i.deleted_at;