const MOCK_EMAIL = 'admin@licitatche.gov.br'
const MOCK_PASSWORD = 'admin123'

interface AuthUser {
  nome: string
  email: string
  papel: string
}

export function useAuth() {
  const user = useState<AuthUser | null>('auth_user', () => null)
  const token = useCookie('auth_token', { maxAge: 60 * 60 * 8 })

  const isAuthenticated = computed(() => !!token.value)

  if (token.value && !user.value) {
    user.value = { nome: 'Admin', email: MOCK_EMAIL, papel: 'Administrador' }
  }

  async function login(email: string, password: string): Promise<{ success: boolean; error?: string }> {
    if (email === MOCK_EMAIL && password === MOCK_PASSWORD) {
      token.value = 'mock_token_' + Date.now()
      user.value = { nome: 'Admin', email, papel: 'Administrador' }
      return { success: true }
    }
    return { success: false, error: 'E-mail ou senha incorretos.' }
  }

  function logout() {
    token.value = null
    user.value = null
    navigateTo('/login')
  }

  return { user, isAuthenticated, login, logout }
}