initialer commit, Grundcode

frontend/js/api.js

@@ -0,0 +1,49 @@
+const BASE = '/api';
+
+async function request(method, path, body = null, formEncoded = false) {
+  const token = localStorage.getItem('token');
+  const headers = {};
+
+  if (token) headers['Authorization'] = `Bearer ${token}`;
+
+  let bodyStr = null;
+  if (body !== null) {
+    if (formEncoded) {
+      headers['Content-Type'] = 'application/x-www-form-urlencoded';
+      bodyStr = new URLSearchParams(body).toString();
+    } else {
+      headers['Content-Type'] = 'application/json';
+      bodyStr = JSON.stringify(body);
+    }
+  }
+
+  const res = await fetch(`${BASE}${path}`, { method, headers, body: bodyStr });
+
+  if (res.status === 401) {
+    localStorage.removeItem('token');
+    localStorage.removeItem('user');
+    window.location.reload();
+    return null;
+  }
+
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({ detail: 'Unbekannter Fehler' }));
+    throw new Error(err.detail || `HTTP ${res.status}`);
+  }
+
+  if (res.status === 204) return null;
+  return res.json();
+}
+
+export const api = {
+  get:    (path)        => request('GET',    path),
+  post:   (path, body)  => request('POST',   path, body),
+  put:    (path, body)  => request('PUT',    path, body),
+  delete: (path)        => request('DELETE', path),
+
+  login: (username, password) =>
+    request('POST', '/auth/token', { username, password }, true),
+
+  setupRequired: () => request('GET', '/auth/setup-required'),
+  setup: (data)      => request('POST', '/auth/setup', data),
+};