// fake-gitlab.mjs — minimal Gitea v1 API stand-in on an ephemeral port.
// Serves exactly the two endpoints the daemon calls (daemon/gitlab.go):
//   GET /api/v1/user       (token validation)
//   GET /api/v1/user/repos (repo listing)
// Repos are returned UNSORTED so the harness proves the daemon sorts by
// updated_at.

import * as http from "node:http";

export const GOOD_PAT = "gitea-e2e-0123456789abcdef";
const HTTP_OK = 200;
const HTTP_UNAUTHORIZED = 401;
const HTTP_NOT_FOUND = 404;

export function startFakeGitLab() {
	const seen = { userAuths: [], repoAuths: [] };
	const server = http.createServer((req, res) => {
		const auth = String(req.headers["authorization"] ?? "");
		const send = (code, obj) => {
			res.writeHead(code, { "Content-Type": "application/json" });
			res.end(JSON.stringify(obj));
		};
		if (req.url.startsWith("/api/v1/user/repos")) {
			seen.repoAuths.push(auth);
			if (auth !== `token ${GOOD_PAT}`)
				return send(HTTP_UNAUTHORIZED, { message: "401 Unauthorized" });
			const base = `http://127.0.0.1:${server.address().port}`;
			return send(HTTP_OK, [
				{
					full_name: "lvmh/beta",
					name: "beta",
					owner: { login: "lvmh" },
					updated_at: "2025-07-01T10:00:00Z",
					html_url: `${base}/lvmh/beta`,
					default_branch: "main",
				},
				{
					full_name: "lvmh/alpha",
					name: "alpha",
					owner: { login: "lvmh" },
					updated_at: "2025-08-01T10:00:00Z",
					html_url: `${base}/lvmh/alpha`,
					default_branch: "trunk",
				},
			]);
		}
		if (req.url.startsWith("/api/v1/user")) {
			seen.userAuths.push(auth);
			return auth === `token ${GOOD_PAT}`
				? send(HTTP_OK, { id: 1, login: "e2e-user", name: "E2E User" })
				: send(HTTP_UNAUTHORIZED, { message: "401 Unauthorized" });
		}
		return send(HTTP_NOT_FOUND, { message: "404 Not Found" });
	});
	return new Promise((resolve) => {
		server.listen(0, "127.0.0.1", () => {
			resolve({
				url: `http://127.0.0.1:${server.address().port}`,
				pat: GOOD_PAT,
				seen,
				close() {
					server.close();
				},
			});
		});
	});
}