CREATE TABLE `rss_feeds` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `type` enum('royalroad','gitea') CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  `rss_feed` varchar(512) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  `last_entry` varchar(512) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `active` tinyint(1) NOT NULL DEFAULT '1',
  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_rss_feed` (`rss_feed`),
  KEY `idx_active_type` (`active`,`type`)
)

CREATE TABLE `rss_feed_subscriptions` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `user_id` bigint(20) NOT NULL,
  `rss_feed_id` int(10) unsigned NOT NULL,
  `feed_name` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `active` tinyint(1) NOT NULL DEFAULT '1',
  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_user_feed` (`user_id`,`rss_feed_id`),
  KEY `idx_feed_active` (`rss_feed_id`,`active`),
  CONSTRAINT `fk_sub_feed` FOREIGN KEY (`rss_feed_id`) REFERENCES `rss_feeds` (`id`) ON DELETE CASCADE,
  CONSTRAINT `fk_sub_user` FOREIGN KEY (`user_id`) REFERENCES `users` (`user_id`) ON DELETE CASCADE
)