refactor: zones => topics

public/api/topics/:topic_id/index.ts

@@ -0,0 +1,113 @@
+import { get_session, get_user, PRECHECK_TABLE, require_user } from '../../../../utils/prechecks.ts';
+import parse_body from '../../../../utils/bodyparser.ts';
+import * as CANNED_RESPONSES from '../../../../utils/canned_responses.ts';
+import { TOPIC, TOPICS } from '../../../../models/topic.ts';
+
+export const PRECHECKS: PRECHECK_TABLE = {};
+
+// GET /api/topics/:id - Get a topic
+PRECHECKS.GET = [get_session, get_user, require_user, async (_req: Request, meta: Record<string, any>): Promise<Response | undefined> => {
+	const topic_id: string = meta.params?.topic_id?.toLowerCase().trim() ?? '';
+
+	// lurid is 49 chars as we use them, eg: "also-play-flow-want-form-wide-thus-work-burn-same"
+	const topic: TOPIC | null = topic_id.length === 49 ? await TOPICS.get(topic_id) : null;
+
+	if (!topic) {
+		return CANNED_RESPONSES.not_found();
+	}
+
+	meta.topic = topic;
+	const topic_is_public = topic.permissions.read.length === 0;
+	const user_has_read_for_topic = topic_is_public || topic.permissions.read.includes(meta.user.id);
+
+	if (!user_has_read_for_topic) {
+		return CANNED_RESPONSES.permission_denied();
+	}
+}];
+export function GET(_req: Request, meta: Record<string, any>): Response {
+	return Response.json(meta.topic, {
+		status: 200
+	});
+}
+
+// PUT /api/topics/:id - Update topic
+PRECHECKS.PUT = [get_session, get_user, require_user, async (_req: Request, meta: Record<string, any>): Promise<Response | undefined> => {
+	const topic_id: string = meta.params?.topic_id?.toLowerCase().trim() ?? '';
+
+	// lurid is 49 chars as we use them, eg: "also-play-flow-want-form-wide-thus-work-burn-same"
+	const topic: TOPIC | null = topic_id.length === 49 ? await TOPICS.get(topic_id) : null;
+
+	if (!topic) {
+		return CANNED_RESPONSES.not_found();
+	}
+
+	meta.topic = topic;
+	const user_has_write_for_topic = topic.permissions.write.includes(meta.user.id);
+
+	if (!user_has_write_for_topic) {
+		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.topic,
+			...body,
+			id: meta.topic.id,
+			timestamps: {
+				created: meta.topic.timestamps.created,
+				updated: now
+			}
+		};
+
+		await TOPICS.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/topics/:id - Delete topic
+PRECHECKS.DELETE = [
+	get_session,
+	get_user,
+	require_user,
+	async (_req: Request, meta: Record<string, any>): Promise<Response | undefined> => {
+		const topic_id: string = meta.params?.topic_id?.toLowerCase().trim() ?? '';
+
+		// lurid is 49 chars as we use them, eg: "also-play-flow-want-form-wide-thus-work-burn-same"
+		const topic: TOPIC | null = topic_id.length === 49 ? await TOPICS.get(topic_id) : null;
+
+		if (!topic) {
+			return CANNED_RESPONSES.not_found();
+		}
+
+		meta.topic = topic;
+		const user_has_write_for_topic = topic.permissions.write.includes(meta.user.id);
+
+		if (!user_has_write_for_topic) {
+			return CANNED_RESPONSES.permission_denied();
+		}
+	}
+];
+export async function DELETE(_req: Request, meta: Record<string, any>): Promise<Response> {
+	await TOPICS.delete(meta.topic);
+
+	return Response.json({
+		deleted: true
+	}, {
+		status: 200
+	});
+}