feat(web): add server-side api-server fetch helper

web/lib/api.ts

@@ -0,0 +1,34 @@
+import type { Acc, User } from "./types";
+
+const API_BASE_URL = process.env.API_BASE_URL ?? "http://api-server:3000";
+
+type FetchInit = {
+  method?: "GET" | "POST";
+  body?: unknown;
+  cache?: RequestCache;
+};
+
+export async function fetchApi(path: string, options: FetchInit = {}): Promise<unknown> {
+  const url = `${API_BASE_URL}${path}`;
+  const init: RequestInit = {
+    method: options.method ?? "GET",
+    cache: options.cache ?? "no-store",
+    headers: options.body ? { "content-type": "application/json" } : undefined,
+    body: options.body ? JSON.stringify(options.body) : undefined,
+  };
+  const res = await fetch(url, init);
+  if (!res.ok) {
+    throw new Error(`API ${options.method ?? "GET"} ${path} failed: ${res.status}`);
+  }
+  return res.json();
+}
+
+export async function getAccounts(): Promise<Acc[]> {
+  const data = await fetchApi("/acc/");
+  return data as Acc[];
+}
+
+export async function getUsers(): Promise<User[]> {
+  const data = await fetchApi("/user/");
+  return data as User[];
+}