iKhokha integration complete

scripts/ikhokha_migrations/001_add_payment_columns.sql

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+-- Migration: add iKhokha / provider metadata to payments table
+-- Migration: add iKhokha / provider metadata to payments table
+-- Compatible with MySQL versions that do not support `ADD COLUMN IF NOT EXISTS`.
+-- Run on staging first. Make a DB backup before running on production.
+
+DELIMITER $$
+CREATE PROCEDURE add_payment_columns_if_missing()
+BEGIN
+  -- provider
+  IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'payments' AND COLUMN_NAME = 'provider') = 0 THEN
+    ALTER TABLE `payments` ADD COLUMN `provider` VARCHAR(50) NULL AFTER `status`;
+  END IF;
+
+  -- provider_payment_id
+  IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'payments' AND COLUMN_NAME = 'provider_payment_id') = 0 THEN
+    ALTER TABLE `payments` ADD COLUMN `provider_payment_id` VARCHAR(128) NULL AFTER `provider`;
+  END IF;
+
+  -- payment_link
+  IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'payments' AND COLUMN_NAME = 'payment_link') = 0 THEN
+    ALTER TABLE `payments` ADD COLUMN `payment_link` VARCHAR(512) NULL AFTER `provider_payment_id`;
+  END IF;
+
+  -- provider_status
+  IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'payments' AND COLUMN_NAME = 'provider_status') = 0 THEN
+    ALTER TABLE `payments` ADD COLUMN `provider_status` VARCHAR(50) NULL AFTER `payment_link`;
+  END IF;
+
+  -- provider_response (JSON)
+  IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'payments' AND COLUMN_NAME = 'provider_response') = 0 THEN
+    ALTER TABLE `payments` ADD COLUMN `provider_response` JSON NULL AFTER `provider_status`;
+  END IF;
+
+  -- booking_id
+  IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'payments' AND COLUMN_NAME = 'booking_id') = 0 THEN
+    ALTER TABLE `payments` ADD COLUMN `booking_id` INT NULL AFTER `user_id`;
+  END IF;
+
+  -- index idx_provider_payment_id
+  IF (SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'payments' AND INDEX_NAME = 'idx_provider_payment_id') = 0 THEN
+    ALTER TABLE `payments` ADD INDEX `idx_provider_payment_id` (`provider_payment_id`(128));
+  END IF;
+END$$
+DELIMITER ;
+
+CALL add_payment_columns_if_missing();
+DROP PROCEDURE IF EXISTS add_payment_columns_if_missing;
+
+-- Notes:
+-- 1) This script creates a short stored procedure which performs existence checks
+--    against INFORMATION_SCHEMA before applying each ALTER TABLE. Run in the
+--    MySQL client or via your migration tool. It avoids syntax not supported on
+--    older MySQL versions.
+-- 2) Test on staging and make a DB dump before running on production.