// Shared global state for current user
const currentUser = ref({
  prefix: 'นาย',
  firstName: 'สมชาย',
  lastName: 'ใจดี',
  email: 'student@example.com',
  photoURL: '' // Set to URL if available
})

export const useAuth = () => {
  const token = useCookie('auth_token', {
    maxAge: 60 * 60 * 24 * 7, // 1 week
    sameSite: 'lax',
    secure: process.env.NODE_ENV === 'production'
  })

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

  const login = (mockToken: string = 'demo-token') => {
    token.value = mockToken
  }

  const logout = () => {
    token.value = null
    // Reset user photo if needed on logout
    // currentUser.value.photoURL = '' 
    return navigateTo('/auth/login', { replace: true })
  }

  return {
    isAuthenticated,
    token,
    currentUser,
    login,
    logout
  }
}