const API_BASE_URL = import.meta.env.VITE_API_URL || 'http://localhost:3001';

async function parseJsonResponse(response) {
  const data = await response.json().catch(() => null);

  if (!response.ok) {
    throw new Error(data?.message || 'Nao foi possivel autenticar.');
  }

  return data;
}

export async function getAuthConfig() {
  const response = await fetch(`${API_BASE_URL}/auth/config`);
  return parseJsonResponse(response);
}

export async function loginWithAd(credentials) {
  const response = await fetch(`${API_BASE_URL}/auth/login`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(credentials),
  });

  return parseJsonResponse(response);
}

export function startMicrosoftLogin() {
  window.location.href = `${API_BASE_URL}/auth/oauth/microsoft/start`;
}

export function storeAuthSession(authResult) {
  window.localStorage.setItem('authToken', authResult.token);
  window.localStorage.setItem('authUser', JSON.stringify(authResult.user));
}