CREATE TABLE `sync_job` (
  `id` INT NOT NULL AUTO_INCREMENT,
  `sync_type` VARCHAR(30) NOT NULL,
  `trigger_mode` VARCHAR(30) NOT NULL,
  `status` VARCHAR(20) NOT NULL DEFAULT 'success',
  `operator` VARCHAR(50) NULL,
  `summary` TEXT NULL,
  `result_payload` TEXT NULL,
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

  PRIMARY KEY (`id`),
  INDEX `sync_job_sync_type_created_at_idx`(`sync_type`, `created_at`),
  INDEX `sync_job_status_created_at_idx`(`status`, `created_at`)
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE `sync_change` (
  `id` INT NOT NULL AUTO_INCREMENT,
  `sync_job_id` INT NOT NULL,
  `entity_type` VARCHAR(20) NOT NULL,
  `entity_key` VARCHAR(100) NULL,
  `entity_name` VARCHAR(100) NOT NULL,
  `change_type` VARCHAR(50) NOT NULL,
  `title` VARCHAR(150) NOT NULL,
  `detail` TEXT NULL,
  `before_snapshot` TEXT NULL,
  `after_snapshot` TEXT NULL,
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

  PRIMARY KEY (`id`),
  INDEX `sync_change_sync_job_id_idx`(`sync_job_id`),
  INDEX `sync_change_entity_type_change_type_idx`(`entity_type`, `change_type`),
  CONSTRAINT `sync_change_sync_job_id_fkey`
    FOREIGN KEY (`sync_job_id`) REFERENCES `sync_job`(`id`)
    ON DELETE CASCADE
    ON UPDATE CASCADE
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE `notification` (
  `id` INT NOT NULL AUTO_INCREMENT,
  `title` VARCHAR(150) NOT NULL,
  `content` TEXT NULL,
  `type` VARCHAR(30) NOT NULL DEFAULT 'info',
  `level` VARCHAR(20) NOT NULL DEFAULT 'info',
  `action_url` VARCHAR(255) NULL,
  `related_sync_job_id` INT NULL,
  `metadata` TEXT NULL,
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

  PRIMARY KEY (`id`),
  INDEX `notification_related_sync_job_id_idx`(`related_sync_job_id`),
  INDEX `notification_created_at_idx`(`created_at`),
  CONSTRAINT `notification_related_sync_job_id_fkey`
    FOREIGN KEY (`related_sync_job_id`) REFERENCES `sync_job`(`id`)
    ON DELETE SET NULL
    ON UPDATE CASCADE
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE `user_notification` (
  `id` INT NOT NULL AUTO_INCREMENT,
  `user_id` INT NOT NULL,
  `notification_id` INT NOT NULL,
  `is_read` BOOLEAN NOT NULL DEFAULT false,
  `read_at` DATETIME(3) NULL,
  `created_at` DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),

  PRIMARY KEY (`id`),
  UNIQUE INDEX `user_notification_user_id_notification_id_key`(`user_id`, `notification_id`),
  INDEX `user_notification_user_id_is_read_created_at_idx`(`user_id`, `is_read`, `created_at`),
  CONSTRAINT `user_notification_user_id_fkey`
    FOREIGN KEY (`user_id`) REFERENCES `user`(`id`)
    ON DELETE CASCADE
    ON UPDATE CASCADE,
  CONSTRAINT `user_notification_notification_id_fkey`
    FOREIGN KEY (`notification_id`) REFERENCES `notification`(`id`)
    ON DELETE CASCADE
    ON UPDATE CASCADE
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;