// BASE_URL spiegelt immer den "base"-Wert aus vite.config.js wider (mit
// abschließendem Slash, z.B. "/hifi/" lokal oder "/" auf IONOS).
export const API_BASE = `${import.meta.env.BASE_URL.replace(/\/$/, '')}/api`;

async function request(path, options = {}) {
  const res = await fetch(`${API_BASE}${path}`, {
    credentials: 'include',
    headers: options.body instanceof FormData ? {} : { 'Content-Type': 'application/json' },
    ...options,
  });

  const isJson = res.headers.get('content-type')?.includes('application/json');
  const data = isJson ? await res.json() : null;

  if (!res.ok) {
    throw new Error(data?.error || `Fehler ${res.status}`);
  }

  return data;
}

export const api = {
  get: (path) => request(path),
  post: (path, body) => request(path, { method: 'POST', body: body instanceof FormData ? body : JSON.stringify(body) }),
  put: (path, body) => request(path, { method: 'PUT', body: JSON.stringify(body) }),
  patch: (path, body) => request(path, { method: 'PATCH', body: JSON.stringify(body) }),
  delete: (path) => request(path, { method: 'DELETE' }),
};