let token = sessionStorage.getItem('dc_token') || '';

export function setToken(t) {
  token = t || '';
  if (t) sessionStorage.setItem('dc_token', t);
  else sessionStorage.removeItem('dc_token');
}

export function getToken() {
  return token;
}

async function request(path, opts = {}) {
  const res = await fetch('/api' + path, {
    ...opts,
    headers: {
      'Content-Type': 'application/json',
      ...(token ? { Authorization: `Bearer ${token}` } : {}),
      ...(opts.headers || {}),
    },
  });
  if (res.status === 401) setToken('');
  const data = await res.json().catch(() => null);
  if (!res.ok) throw new Error(data?.error || res.statusText);
  return data;
}

export const api = {
  get: (p) => request(p),
  post: (p, body) => request(p, { method: 'POST', body: JSON.stringify(body ?? {}) }),
  put: (p, body) => request(p, { method: 'PUT', body: JSON.stringify(body ?? {}) }),
  del: (p) => request(p, { method: 'DELETE' }),
};