feat: lodge server, client and admin

frontend/src/lib/api/client.ts

@@ -0,0 +1,54 @@
+import { env } from "$env/dynamic/public";
+
+const BASE = env.PUBLIC_API_BASE_URL ?? "/api";
+
+export class ApiError extends Error {
+  status: number;
+
+  constructor(status: number, message: string) {
+    super(message);
+    this.status = status;
+    this.name = "ApiError";
+  }
+}
+
+type Json = Record<string, unknown> | unknown[];
+
+const send = async (
+  method: string,
+  path: string,
+  body?: Json
+): Promise<Response> => {
+  const init: RequestInit = { credentials: "include", method };
+  if (body !== undefined) {
+    init.headers = { "Content-Type": "application/json" };
+    init.body = JSON.stringify(body);
+  }
+  const res = await fetch(BASE + path, init);
+  if (!res.ok) {
+    const detail = (await res.text()).trim();
+    throw new ApiError(res.status, detail || res.statusText);
+  }
+  return res;
+};
+
+const request = async <T>(
+  method: string,
+  path: string,
+  body?: Json
+): Promise<T> => {
+  const res = await send(method, path, body);
+  if (res.status === 204) {
+    return undefined as T;
+  }
+  return (await res.json()) as T;
+};
+
+export const api = {
+  bytes: async (path: string) =>
+    new Uint8Array(await (await send("GET", path)).arrayBuffer()),
+  del: <T>(path: string) => request<T>("DELETE", path),
+  events: () => new EventSource(`${BASE}/events`, { withCredentials: true }),
+  get: <T>(path: string) => request<T>("GET", path),
+  post: <T>(path: string, body?: Json) => request<T>("POST", path, body),
+};