CREATE TABLE IF NOT EXISTS `automation_rules` (
    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
    `name` VARCHAR(128) NOT NULL,
    `event_type` VARCHAR(64) NOT NULL,
    `is_active` TINYINT(1) NOT NULL DEFAULT 1,
    `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    PRIMARY KEY (`id`),
    INDEX `auto_rules_event_active_idx` (`event_type`, `is_active`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS `automation_conditions` (
    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
    `rule_id` INT UNSIGNED NOT NULL,
    `condition_type` VARCHAR(64) NOT NULL,
    `condition_value` JSON NOT NULL,
    `sort_order` SMALLINT UNSIGNED NOT NULL DEFAULT 0,
    PRIMARY KEY (`id`),
    INDEX `auto_cond_rule_idx` (`rule_id`),
    CONSTRAINT `auto_cond_rule_fk` FOREIGN KEY (`rule_id`) REFERENCES `automation_rules` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS `automation_actions` (
    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
    `rule_id` INT UNSIGNED NOT NULL,
    `action_type` VARCHAR(64) NOT NULL,
    `action_config` JSON NOT NULL,
    `sort_order` SMALLINT UNSIGNED NOT NULL DEFAULT 0,
    PRIMARY KEY (`id`),
    INDEX `auto_act_rule_idx` (`rule_id`),
    CONSTRAINT `auto_act_rule_fk` FOREIGN KEY (`rule_id`) REFERENCES `automation_rules` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;