Add plannotator extension v0.19.10

extensions/plannotator/server/helpers.ts

@@ -0,0 +1,78 @@
+/**
+ * Core HTTP helpers for Pi extension servers.
+ * parseBody, json, html, send, toWebRequest
+ */
+
+import type { IncomingMessage } from "node:http";
+import { Readable } from "node:stream";
+
+export function parseBody(
+	req: IncomingMessage,
+): Promise<Record<string, unknown>> {
+	return new Promise((resolve) => {
+		let data = "";
+		req.on("data", (chunk: string) => (data += chunk));
+		req.on("end", () => {
+			try {
+				resolve(JSON.parse(data));
+			} catch {
+				resolve({});
+			}
+		});
+	});
+}
+
+export function json(
+	res: import("node:http").ServerResponse,
+	data: unknown,
+	status = 200,
+): void {
+	res.writeHead(status, { "Content-Type": "application/json" });
+	res.end(JSON.stringify(data));
+}
+
+export function html(
+	res: import("node:http").ServerResponse,
+	content: string,
+): void {
+	res.writeHead(200, { "Content-Type": "text/html" });
+	res.end(content);
+}
+
+export function send(
+	res: import("node:http").ServerResponse,
+	body: string | Buffer,
+	status = 200,
+	headers: Record<string, string> = {},
+): void {
+	res.writeHead(status, headers);
+	res.end(body);
+}
+
+export function requestUrl(req: IncomingMessage): URL {
+	return new URL(req.url ?? "/", "http://localhost");
+}
+
+export function toWebRequest(req: IncomingMessage): Request {
+	const headers = new Headers();
+	for (const [key, value] of Object.entries(req.headers)) {
+		if (value === undefined) continue;
+		if (Array.isArray(value)) {
+			for (const item of value) headers.append(key, item);
+		} else {
+			headers.set(key, value);
+		}
+	}
+
+	const init: RequestInit & { duplex?: "half" } = {
+		method: req.method,
+		headers,
+	};
+
+	if (req.method !== "GET" && req.method !== "HEAD") {
+		init.body = Readable.toWeb(req) as unknown as BodyInit;
+		init.duplex = "half";
+	}
+
+	return new Request(`http://localhost${req.url ?? "/"}`, init);
+}