<template>
  <div class="login" style="padding-bottom: 50vw;">
    <!-- Logo 区域 -->
    <div class="logo" v-if="!isReg">
      <img src="/img/login-logo.png" />
    </div>
    <div class="logo" v-else>
      <div class="fonts">
        <b>注册账号</b>
        <p>欢迎注册泰古润</p>
      </div>
    </div>

    <div class="contaiar">
      <div class="lg_box">
        <!-- 登录方式切换 tabs -->
        <van-tabs color="#841e36" line-height="1.07vw" line-width="12vw" v-model:active="active" v-if="!isReg">
          <van-tab title="账号登录"></van-tab>
          <van-tab title="手机号登录"></van-tab>
        </van-tabs>

        <!-- 表单区域 -->
        <div class="form-content">
          <!-- 手机号 -->
          <div class="line">
            <div class="title">
              <img src="/img/login-i1.png" alt="">
              <input type="tel" maxlength="11" :placeholder="active === 1 && !isReg ? '请输入手机号码作为账号' : '请输入手机号'"
                v-model="formData.Phone" />
              <van-icon v-if="formData.Phone" @click="formData.Phone = ''" name="cross" size="5vw"></van-icon>
            </div>
          </div>

          <!-- 验证码 (手机号登录或注册时显示) -->
          <div class="line" v-if="active === 1 || isReg">
            <div class="title">
              <img src="/img/login-i2.png" alt="">
              <input type="text" placeholder="请输入验证码" v-model="formData.SmsCode" maxlength="6" />
              <van-button class="hqyzm" @click="getSmsCode" :disabled="countdown.isCounting">
                {{ countdown.isCounting ? `已发送(${countdown.seconds}s)` : '获取验证码' }}
              </van-button>
            </div>
          </div>

          <!-- 密码 (账号登录或注册时显示) -->
          <div class="line" v-if="active === 0 || isReg">
            <div class="title">
              <img src="/img/login-i3.png" alt="">
              <input :type="showPassword ? 'text' : 'password'" placeholder="请输入密码" v-model="formData.Password"
                @keydown.enter="handleSubmit" />
              <van-icon @click="showPassword = !showPassword" :name="showPassword ? 'closed-eye' : 'eye-o'"
                size="5vw"></van-icon>
            </div>
          </div>

          <!-- 确认密码 (仅注册时显示) -->
          <div class="line" v-if="isReg">
            <div class="title">
              <img src="/img/login-i4.png" alt="">
              <input :type="showConfirmPassword ? 'text' : 'password'" placeholder="请确认密码" v-model="formData.RePassword"
                @keydown.enter="handleSubmit" />
              <van-icon @click="showConfirmPassword = !showConfirmPassword"
                :name="showConfirmPassword ? 'closed-eye' : 'eye-o'" size="5vw"></van-icon>
            </div>
          </div>

          <!-- 邀请人 (仅注册时显示) -->
          <div class="line" v-if="isReg">
            <div class="title">
              <img src="/img/login-i5.png" alt="">
              <input type="text" maxlength="11" placeholder="请填写邀请人账号(选填)" v-model="formData.Recommend" />
              <van-icon v-if="formData.Recommend" @click="formData.Recommend = ''" name="cross" size="5vw"></van-icon>
            </div>
          </div>

          <!-- 提交按钮 -->
          <van-button class="submit" type="commit" @click="handleSubmit" :loading="loading" loading-text="提交中..">
            {{ isReg ? '注册' : '登录' }}
          </van-button>
        </div>

        <!-- 用户协议 -->
        <van-checkbox icon-size="3.2vw" class="agreement" v-model="checked" checked-color="#841e36">
          选中即代表同意<a @click.stop="showContract = true">《用户协议》</a>和<a @click.stop="showPolicy = true">《隐私政策》</a>
        </van-checkbox>

        <!-- 底部链接 -->
        <div class="toLogin">
          <div class="ct1" v-if="isReg" @click="isReg = false">
            已有账号，立即登录
            <van-icon name="arrow"></van-icon>
          </div>
          <div class="box ct2" v-else>
            <div @click.stop="$navigate('/ResetPwd')">忘记密码</div>
            <p>|</p>
            <span @click="isReg = true">立即注册</span>
          </div>
        </div>
      </div>
    </div>
  </div>

  <!-- 用户协议弹窗 -->
  <van-action-sheet v-model:show="showContract" safe-area-inset-bottom title="用户协议" closeable
    style="min-height: 50%; padding: 0px 10px 10px 10px">
    <div class="w100 html" v-html="$datadic.getContent('code_yhxy')"></div>
  </van-action-sheet>

  <!-- 隐私政策弹窗 -->
  <van-action-sheet v-model:show="showPolicy" safe-area-inset-bottom title="隐私政策" closeable
    style="min-height: 50%; padding: 0px 10px 10px 10px">
    <div class="w100 html" v-html="$datadic.getContent('code_yszc')"></div>
  </van-action-sheet>
</template>

<script>
import { useUserStore } from '@/stores/user'

export default {
  name: 'Login',
  data() {
    return {
      formData: {
        Phone: '',
        SmsCode: '',
        Password: '',
        RePassword: '',
        Recommend: localStorage.getItem('recommend') || ''
      },
      isReg: false,
      active: 0,
      checked: false,
      showPassword: false,
      showConfirmPassword: false,
      showContract: false,
      showPolicy: false,
      loading: false,
      smsCode: '', // 接口返回的验证码
      countdown: {
        isCounting: false,
        seconds: 0,
        timer: null
      }
    }
  },
  methods: {
    init() {
      // 防止刷新重复处理微信 code
      if (sessionStorage.getItem('wx_code_processed') === '1') {
        sessionStorage.removeItem('wx_code_processed')
        return
      }
      // 已登录，直接跳转
      if (this.$isLogin?.()) {
        location.replace('#/')
        return
      }
      // 小程序环境
      if (this.$isWechatMini()) {
        wx.miniProgram.reLaunch({ url: `/pages/user/login` })
        return
      }
      // 微信公众号环境：有 code 则等待登录后绑定，无 code 则跳转授权
      if (this.$isWechat()) {
        if (sessionStorage.getItem('wx_callback_code')) {
          // 有 code，等登录后用 token + code 绑定
        } else {
          this.checkWxLogin()
        }
        return
      }
    },
    checkWxLogin() {
      if (!this.$isWechat()) return
      const REDIRECT_URI = encodeURIComponent('https://m.taigurun.cn/#/WxCallback')
      window.location.href = `https://open.weixin.qq.com/connect/oauth2/authorize?appid=wxdff8dd2032f1e054&redirect_uri=${REDIRECT_URI}&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect`
    },
    validatePhone(phone) {
      if (!phone) {
        this.$showFailToast?.('请输入手机号')
        return false
      }
      if (!this.$validPhone?.(phone)) {
        this.$showFailToast?.('手机号格式错误')
        return false
      }
      return true
    },
    validateAgreement() {
      if (!this.checked) {
        this.$showFailToast?.('请选中"同意《用户协议》和《隐私政策》"')
        return false
      }
      return true
    },
    getSmsCode() {
      if (!this.validatePhone(this.formData.Phone)) return
      this.countdown.isCounting = true
      this.countdown.seconds = 60
      this.countdown.timer = setInterval(() => {
        if (this.countdown.seconds > 0) {
          this.countdown.seconds--
        } else {
          this.countdown.isCounting = false
          clearInterval(this.countdown.timer)
        }
      }, 1000)
      this.$post('/v1/client/AuthClient/sendcode', {
        purpose: this.isReg ? 'register' : 'login',
        cellphone: this.formData.Phone
      }).then(data => {
        if (data.status === 200) {
          this.$showSuccessToast?.('发送成功')
          this.smsCode = data.data
        }
      }).catch(() => {
        this.countdown.isCounting = false
        clearInterval(this.countdown.timer)
      })
    },
    handleSubmit() {
      if (!this.validatePhone(this.formData.Phone)) return
      if (!this.validateAgreement()) return
      if (this.isReg) {
        this.handleRegister()
      } else {
        this.handleLogin()
      }
    },
    handleLogin() {
      if (this.active === 0) {
        // 账号密码登录
        if (!this.formData.Password) {
          this.$showFailToast?.('请输入密码')
          return
        }
        this.loading = true
        this.$post('/v1/client/AuthClient/loginpwd', {
          cellphone: this.formData.Phone,
          userpwd: this.formData.Password
        }).then(data => {
          this.loading = false
          if (data.status !== 200) {
            this.$showFailToast?.(data.message)
            return
          }
          this.afterLogin(data.data.token)
        }).catch(err => {
          this.loading = false
          this.$showFailToast?.(err.message || '登录失败')
        })
      } else {
        // 手机验证码登录
        if (!this.formData.SmsCode) {
          this.$showFailToast?.('请输入验证码')
          return
        }
        this.loading = true
        this.$post('/v1/client/AuthClient/logincode', {
          cellphone: this.formData.Phone,
          code: this.formData.SmsCode,
          pcellphone: this.formData.Recommend
        }).then(data => {
          this.loading = false
          if (data.status !== 200) {
            this.$showFailToast?.(data.message)
            return
          }
          this.afterLogin(data.data.token)
        }).catch(err => {
          this.loading = false
          this.$showFailToast?.(err.message || '登录失败')
        })
      }
    },
    // 登录/注册成功后的统一处理：存 token、拉用户信息、绑定微信 openid
    afterLogin(token) {
      const userStore = useUserStore()
      userStore.setToken(token)
      userStore.fetchUserInfo()
      this.bindWxOpenid(token)
    },
    // 用 token + code 换 openid 并绑定
    bindWxOpenid(token) {
      const code = sessionStorage.getItem('wx_callback_code')
      if (!code) {
        this.$showSuccessToast?.('登录成功')
        location.replace('#/My')
        return
      }
      fetch(`${import.meta.env.VITE_API_URL}/v1/client/AuthClient/loginwxweb`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${token}`,
        },
        body: JSON.stringify(code),
      }).then(res =>
        res.json()
      ).then(res => {
        // alert(JSON.stringify(res))
        sessionStorage.removeItem('wx_callback_code')
        if (res.message) {
          localStorage.setItem('openid', res.message)
          // alert('微信账号绑定成功，openid：' + res.message)
        }
        this.$showSuccessToast?.('登录成功')
        location.replace('#/My')
      }).catch(() => {
        sessionStorage.removeItem('wx_callback_code')
        this.$showSuccessToast?.('登录成功')
        location.replace('#/My')
      })
    },
    handleRegister() {
      if (!this.formData.SmsCode) {
        this.$showFailToast?.('请输入验证码')
        return
      }
      if (!this.formData.Password) {
        this.$showFailToast?.('请输入密码')
        return
      }
      if (this.formData.Password !== this.formData.RePassword) {
        this.$showFailToast?.('两次密码输入不一致')
        return
      }
      if (this.formData.Password.length < 6) {
        this.$showFailToast?.('密码至少6位')
        return
      }
      this.loading = true
      this.$post('/v1/client/AuthClient/register', {
        cellphone: this.formData.Phone,
        userpwd: this.formData.Password,
        pcellphone: this.formData.Recommend,
        code: this.formData.SmsCode
      }).then(data => {
        this.loading = false
        if (data.status !== 200) {
          this.$showFailToast?.(data.message)
          return
        }
        this.afterLogin(data.data.token)
      }).catch(err => {
        this.loading = false
        this.$showFailToast?.(err.message || '注册失败')
      })
    }
  },
  mounted() {
    this.init()
    // 解析邀请链接参数
    const params = new URLSearchParams(location.hash.split('?')[1] || '');
    const inviteCode = params.get('invite');
    if (inviteCode) {
      this.formData.Recommend = inviteCode;
      localStorage.setItem('recommend', inviteCode);
      // 有邀请码时自动切换到注册模式
      // this.isReg = true;
    }
  },
  beforeUnmount() {
    if (this.countdown.timer) {
      clearInterval(this.countdown.timer)
    }
  }
}
</script>
