-- Migration: create roles table to store default role permissions
CREATE TABLE IF NOT EXISTS `roles` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `role` varchar(50) NOT NULL,
  `permissions` json DEFAULT NULL,
  `created_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `updated_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_role` (`role`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;