// 登录态与微信登录封装
import { TOKEN_KEY, MEMBER_KEY } from '@/utils/config'
import { login as loginApi } from '@/api/mall'

export function getToken() {
  return uni.getStorageSync(TOKEN_KEY) || ''
}

export function setToken(token) {
  if (token) uni.setStorageSync(TOKEN_KEY, token)
}

export function getMember() {
  return uni.getStorageSync(MEMBER_KEY) || null
}

export function setMember(member) {
  if (member) uni.setStorageSync(MEMBER_KEY, member)
}

export function clearAuth() {
  uni.removeStorageSync(TOKEN_KEY)
  uni.removeStorageSync(MEMBER_KEY)
}

export function isLogin() {
  return !!getToken()
}

/**
 * 微信登录：uni.login 拿 code → 调后端 Login → 存 token 与 member
 * @param {Object} profile 可选 { nickName, avatar }
 * @returns {Promise<Object>} 登录结果 { token, member }
 */
export function wechatLogin(profile = {}) {
  return new Promise((resolve, reject) => {
    uni.login({
      provider: 'weixin',
      success: (res) => {
        if (!res || !res.code) {
          reject(new Error('微信登录失败：未获取到 code'))
          return
        }
        const payload = { code: res.code }
        if (profile.nickName) payload.nickName = profile.nickName
        if (profile.avatar) payload.avatar = profile.avatar

        loginApi(payload)
          .then((data) => {
            if (data && data.token) {
              setToken(data.token)
              if (data.member) setMember(data.member)
            }
            resolve(data)
          })
          .catch(reject)
      },
      fail: (err) => reject(err)
    })
  })
}

/**
 * 确保已登录：已有 token 直接返回；否则静默微信登录
 * @returns {Promise<Object>}
 */
export function ensureLogin() {
  if (isLogin()) {
    return Promise.resolve({ token: getToken(), member: getMember() })
  }
  return wechatLogin()
}