import { defineStore } from 'pinia'
import { ref, computed } from 'vue'
import { setStorage, getStorage, removeStorage, TOKEN_KEY } from '../utils/storage.js'
import * as userApi from '../api/user.js'

export const useUserStore = defineStore('user', () => {
  const token = ref(getStorage(TOKEN_KEY) || null)
  const userInfo = ref(null)

  // 计算属性：是否已登录
  const isLoggedIn = computed(() => !!token.value)

  /**
   * 登录（含协议勾选校验）
   * @param {string} phone - 手机号
   * @param {string} code - 验证码
   * @param {string} areaCode - 区号
   * @param {boolean} agreedToTerms - 是否已勾选协议
   */
  async function login(phone, code, areaCode, agreedToTerms) {
    if (!agreedToTerms) {
      uni.showToast({ title: '请阅读并同意协议', icon: 'none' })
      return Promise.reject(new Error('未同意协议'))
    }

    const res = await userApi.login(phone, code, areaCode)
    const newToken = res.data?.token || res.data
    token.value = newToken
    setStorage(TOKEN_KEY, newToken)
    return res
  }

  /**
   * 获取用户信息
   */
  async function fetchUserInfo() {
    const res = await userApi.getUserInfo()
    userInfo.value = res.data
    return res
  }

  /**
   * 退出登录
   */
  async function logout() {
    try {
      await userApi.logout()
    } catch (e) {
      // 即使API调用失败也清除本地状态
    }
    clearAuth()
  }

  /**
   * 注销账号
   */
  async function deleteAccount() {
    const res = await userApi.deleteAccount()
    clearAuth()
    return res
  }

  /**
   * 清除本地认证信息
   */
  function clearAuth() {
    token.value = null
    userInfo.value = null
    removeStorage(TOKEN_KEY)
  }

  return {
    token,
    userInfo,
    isLoggedIn,
    login,
    fetchUserInfo,
    logout,
    deleteAccount,
    clearAuth
  }
})