-- Make content_items.channel_id nullable to support ad-hoc URL downloads without a channel.
-- SQLite cannot ALTER COLUMN to remove NOT NULL, so we recreate the table.

PRAGMA foreign_keys=OFF;--> statement-breakpoint

CREATE TABLE `content_items_new` (
	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	`channel_id` integer,
	`title` text NOT NULL,
	`platform_content_id` text NOT NULL,
	`url` text NOT NULL,
	`content_type` text NOT NULL,
	`duration` integer,
	`file_path` text,
	`file_size` integer,
	`format` text,
	`quality_metadata` text,
	`status` text DEFAULT 'monitored' NOT NULL,
	`thumbnail_url` text,
	`published_at` text,
	`downloaded_at` text,
	`monitored` integer DEFAULT true NOT NULL,
	`created_at` text DEFAULT (datetime('now')) NOT NULL,
	`updated_at` text DEFAULT (datetime('now')) NOT NULL,
	FOREIGN KEY (`channel_id`) REFERENCES `channels`(`id`) ON UPDATE no action ON DELETE cascade
);--> statement-breakpoint

INSERT INTO `content_items_new`
  SELECT `id`, `channel_id`, `title`, `platform_content_id`, `url`, `content_type`,
         `duration`, `file_path`, `file_size`, `format`, `quality_metadata`, `status`,
         `thumbnail_url`, `published_at`, `downloaded_at`, `monitored`,
         `created_at`, `updated_at`
  FROM `content_items`;--> statement-breakpoint

DROP TABLE `content_items`;--> statement-breakpoint

ALTER TABLE `content_items_new` RENAME TO `content_items`;--> statement-breakpoint

PRAGMA foreign_keys=ON;--> statement-breakpoint

-- Seed ad-hoc download setting (enabled by default)
INSERT OR IGNORE INTO `system_config` (`key`, `value`, `created_at`, `updated_at`)
  VALUES ('adhoc.enabled', 'true', datetime('now'), datetime('now'));