/**
 * rTube Automerge document schemas.
 *
 * Syncs shared playlists and watch party state across space members.
 * Actual video files remain on R2/S3; this doc manages collaborative
 * curation and viewing sessions.
 *
 * DocId format: {space}:tube:playlists
 */

import type { DocSchema } from '../../shared/local-first/document';

// ── Document types ──

export interface PlaylistEntry {
	videoName: string;
	addedBy: string | null;
	addedAt: number;
}

export interface Playlist {
	id: string;
	name: string;
	entries: PlaylistEntry[];
	createdBy: string | null;
	createdAt: number;
}

export interface WatchParty {
	videoName: string;
	startedBy: string | null;
	startedAt: number;
	/** Playback position in seconds */
	position: number;
	playing: boolean;
}

export interface TubeDoc {
	meta: {
		module: string;
		collection: string;
		version: number;
		spaceSlug: string;
		createdAt: number;
	};
	playlists: Record<string, Playlist>;
	watchParty: WatchParty | null;
}

// ── Schema registration ──

export const tubeSchema: DocSchema<TubeDoc> = {
	module: 'tube',
	collection: 'playlists',
	version: 1,
	init: (): TubeDoc => ({
		meta: {
			module: 'tube',
			collection: 'playlists',
			version: 1,
			spaceSlug: '',
			createdAt: Date.now(),
		},
		playlists: {},
		watchParty: null,
	}),
	migrate: (doc: any, _fromVersion: number) => {
		if (!doc.playlists) doc.playlists = {};
		if (!('watchParty' in doc)) doc.watchParty = null;
		doc.meta.version = 1;
		return doc;
	},
};

// ── Helpers ──

export function tubeDocId(space: string) {
	return `${space}:tube:playlists` as const;
}