<template>
  <view class="container">
    <view class="unp-header">
      <view class="unp-logo">
        <u-avatar size="80" icon="github-circle-fill" fontSize="80"></u-avatar>
      </view>
    </view>

    <view class="unp-box">
      <!-- 登录方式选择 -->
      <view class="mode-section">
        <u-subsection mode="subsection" fontSize="15" :list="loginModeList" :current="currentModeIndex" @change="handleModeChange"></u-subsection>
      </view>
      <u-gap height="40"></u-gap>

      <!-- 登录表单 -->
      <u--form labelPosition="left" :model="formData" :rules="rules" ref="form">
        <u-form-item label="手机号" prop="mobile" labelWidth="60" borderBottom ref="item-mobile">
          <u-input type="number" maxlength="11" v-model="formData.mobile" clearable placeholder="请填写手机号" border="none"></u-input>
        </u-form-item>

        <u-gap height="20"></u-gap>

        <u-form-item v-if="currentModeIndex === 0" label="密码" prop="password" labelWidth="60" borderBottom ref="item-password">
          <u-input :type="inputType" maxlength="16" v-model="formData.password" placeholder="请填写密码" border="none">
            <template slot="suffix">
              <u-icon v-if="inputType === 'password'" size="20" color="#666666" name="eye-fill" @click="inputType = 'text'"></u-icon>
              <u-icon v-if="inputType === 'text'" size="20" color="#666666" name="eye-off" @click="inputType = 'password'"></u-icon>
            </template>
          </u-input>
        </u-form-item>

        <u-form-item v-else label="验证码" prop="code" labelWidth="60" borderBottom>
          <u--input type="number" maxlength="4" v-model="formData.code" border="none" placeholder="请填写验证码"></u--input>
          <u-button slot="right" @tap="getCode" :text="codeTips" type="success" size="mini" :disabled="codeDisabled"></u-button>
          <u-code ref="uCode" @change="codeChange" seconds="60" @start="codeDisabled = true" @end="codeDisabled = false"></u-code>
        </u-form-item>

        <view class="btn-group">
          <u-button type="primary" text="登录" customStyle="margin-top: 50px" @click="handleSubmit"></u-button>

          <u-gap height="20"></u-gap>
          <u-button type="info" text="返回" @click="navigateBack()"></u-button>
        </view>
      </u--form>
    </view>
  </view>
</template>

<script>
import { passwordLogin, sendSmsCode, smsLogin } from '../../common/api'

export default {
  data() {
    return {
      currentModeIndex: 0,
      loginModeList: ['密码登录', '验证码登录'],
      inputType: 'password',
      codeDisabled: false,
      codeTips: '',
      formData: {
        mobile: '',
        password: '',
        code: ''
      },
      rules: {
        mobile: [
          {
            type: 'integer',
            required: true,
            message: '请填写手机号',
            trigger: ['blur', 'change']
          },
          {
            // 自定义验证函数，见上说明
            validator: (rule, value, callback) => {
              // 上面有说，返回true表示校验通过，返回false表示不通过
              // uni.$u.test.mobile()就是返回true或者false的
              return uni.$u.test.mobile(value)
            },
            message: '手机号码不正确',
            // 触发器可以同时用blur和change
            trigger: ['change', 'blur']
          }
        ],
        password: {
          type: 'string',
          min: 4,
          max: 16,
          required: true,
          message: '密码长度4-16位密码',
          trigger: ['blur', 'change']
        },
        code: {
          type: 'integer',
          len: 4,
          required: true,
          message: '请填写4位验证码',
          trigger: ['blur', 'change']
        }
      }
    }
  },
  onLoad() {},
  onReady() {
    // 如果需要兼容微信小程序，并且校验规则中含有方法等，只能通过setRules方法设置规则
    this.$refs.form.setRules(this.rules)
  },
  methods: {
    handleModeChange(index) {
      if (index !== this.currentModeIndex) {
        this.currentModeIndex = index
        this.$refs.form.clearValidate()
      }
    },
    codeChange(text) {
      this.codeTips = text
    },
    getCode() {
      const mobile = this.formData.mobile
      if (!mobile) {
        uni.$u.toast('请填写手机号')
      } else if (!uni.$u.test.mobile(mobile)) {
        uni.$u.toast('手机号格式不正确')
      } else if (this.$refs.uCode.canGetCode) {
        // 模拟向后端请求验证码
        uni.showLoading({
          title: '正在获取验证码'
        })

        //scene:1登陆获取验证码场景
        sendSmsCode({ mobile: mobile, scene: 1 })
          .then(res => {
            //console.log(res)
            uni.hideLoading()
            if (res.code === 0) {
              // 这里此提示会被this.start()方法中的提示覆盖
              uni.$u.toast('验证码已发送')
              // 通知验证码组件内部开始倒计时
              this.$refs.uCode.start()
            } else {
              uni.$u.toast(res.msg)
            }
          })
          .catch(err => {
            uni.$u.toast('服务器接口请求异常')
          })
      } else {
        uni.$u.toast('倒计时结束后再发送')
      }
    },
    handleSubmit() {
      this.$refs.form.validate().then(res => {
        if (this.currentModeIndex === 0) {
          this.handleLoginPromise(passwordLogin({ mobile: this.formData.mobile, password: this.formData.password }))
        } else if (this.currentModeIndex === 1) {
          this.handleLoginPromise(smsLogin({ mobile: this.formData.mobile, code: this.formData.code }))
        }
      })
    },
    handleLoginPromise(promise) {
      promise
        .then(res => {
          if (res.code === 0) {
            this.$store.commit('setToken', res.data)
            uni.$u.toast('登录成功')
            setTimeout(() => {
              this.navigateBack()
            }, 1000)
          } else {
            uni.$u.toast(res.msg)
          }
        })
        .catch(err => {
          uni.$u.toast('接口请求失败')
        })
    },
    navigateBack() {
      uni.navigateBack()
    }
  }
}
</script>

<style lang="scss" scoped>
.unp-header {
  height: 400rpx;
  @include flex-center;
  .unp-logo {
    @include flex-center(column);
  }
}

.unp-box {
  @include flex-center(column);

  .mode-section {
    width: 560rpx;
  }
  .btn-group {
    width: 560rpx;
  }
}

.lk-group {
  height: 40rpx;
  margin-top: 40rpx;
  @include flex-space-between;
  font-size: 12rpx;

  color: $u-primary;
  text-decoration: $u-primary;
}
</style>
