feature: watches on the backend, need frontend implementation for

notifications and unread indicators

public/api/users/:user_id/watches/:watch_id/index.ts

@@ -0,0 +1,88 @@
+import * as CANNED_RESPONSES from '../../../../../../utils/canned_responses.ts';
+import { WATCH, WATCHES } from '../../../../../../models/watch.ts';
+import { get_session, get_user, PRECHECK_TABLE, require_user } from '../../../../../../utils/prechecks.ts';
+import parse_body from '../../../../../../utils/bodyparser.ts';
+
+export const PRECHECKS: PRECHECK_TABLE = {};
+
+// PUT /api/users/:user_id/watches/:watch_id - Update topic
+PRECHECKS.PUT = [get_session, get_user, require_user, async (_req: Request, meta: Record<string, any>): Promise<Response | undefined> => {
+	const watch_id: string = meta.params?.watch_id?.toLowerCase().trim() ?? '';
+
+	// lurid is 49 chars as we use them, eg: "also-play-flow-want-form-wide-thus-work-burn-same"
+	const watch: WATCH | null = watch_id.length === 49 ? await WATCHES.get(watch_id) : null;
+
+	if (!watch) {
+		return CANNED_RESPONSES.not_found();
+	}
+
+	meta.watch = watch;
+	const user_owns_watch = watch.creator_id === meta.user.id;
+
+	if (!user_owns_watch) {
+		return CANNED_RESPONSES.permission_denied();
+	}
+}];
+export async function PUT(req: Request, meta: Record<string, any>): Promise<Response> {
+	const now = new Date().toISOString();
+
+	try {
+		const body = await parse_body(req);
+		const updated = {
+			...meta.watch,
+			...body,
+			id: meta.watch.id,
+			timestamps: {
+				created: meta.watch.timestamps.created,
+				updated: now
+			}
+		};
+
+		await WATCHES.update(updated);
+		return Response.json(updated, {
+			status: 200
+		});
+	} catch (err) {
+		return Response.json({
+			error: {
+				message: (err as Error)?.message ?? 'Unknown error due to invalid data.',
+				cause: (err as Error)?.cause ?? 'invalid_data'
+			}
+		}, {
+			status: 400
+		});
+	}
+}
+
+// DELETE /api/users/:user_id/watches/:watch_id - Delete watch
+PRECHECKS.DELETE = [
+	get_session,
+	get_user,
+	require_user,
+	async (_req: Request, meta: Record<string, any>): Promise<Response | undefined> => {
+		const watch_id: string = meta.params?.watch_id?.toLowerCase().trim() ?? '';
+
+		// lurid is 49 chars as we use them, eg: "also-play-flow-want-form-wide-thus-work-burn-same"
+		const watch: WATCH | null = watch_id.length === 49 ? await WATCHES.get(watch_id) : null;
+
+		if (!watch) {
+			return CANNED_RESPONSES.not_found();
+		}
+
+		meta.topic = watch;
+		const user_owns_watch = watch.creator_id === meta.user.id;
+
+		if (!user_owns_watch) {
+			return CANNED_RESPONSES.permission_denied();
+		}
+	}
+];
+export async function DELETE(_req: Request, meta: Record<string, any>): Promise<Response> {
+	await WATCHES.delete(meta.watch);
+
+	return Response.json({
+		deleted: true
+	}, {
+		status: 200
+	});
+}