CREATE TABLE `thread_subscriptions` (
	`upload_id` varchar(8) NOT NULL,
	`user_id` bigint unsigned NOT NULL,
	`enabled` boolean NOT NULL DEFAULT true,
	`created_at` timestamp NOT NULL DEFAULT (now()),
	CONSTRAINT `thread_subscriptions_upload_id_user_id_pk` PRIMARY KEY(`upload_id`,`user_id`)
);
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ALTER TABLE `thread_subscriptions` ADD CONSTRAINT `thread_subscriptions_upload_id_uploads_id_fk` FOREIGN KEY (`upload_id`) REFERENCES `uploads`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
ALTER TABLE `thread_subscriptions` ADD CONSTRAINT `thread_subscriptions_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;
--> statement-breakpoint
INSERT INTO `thread_subscriptions` (`upload_id`, `user_id`)
SELECT `id`, `user_id` FROM `uploads`
UNION
SELECT `upload_id`, `user_id` FROM `comments`
UNION
SELECT `upload_id`, `user_id` FROM `favorites`
UNION
SELECT `upload_id`, `user_id` FROM `upload_reactions`;