<template>
  <div class="main">
    <a-col class="form" :xs='{ span:19, offset: 2 }' :sm="{ span: 5, offset: 6 }" :md="{ span:4, offset:7}" :lg="{ span: 4, offset: 16}">
    <a-form
      id="formLogin"
      class="user-layout-login"
      ref="formLogin"
      :form="form"
      @submit="handleSubmit"
    >
      <a-alert v-if="isLoginError" type="error" showIcon style="margin-bottom: 24px;" :message="errmsg" />
      <a-form-item>
        <a-input
          size="large"
          type="text"
          placeholder="账户名"
          v-decorator="[
            'username',
            {rules: [{ required: true, message: '请输入帐户名' }, { validator: handleUsernameOrEmail }], validateTrigger: 'change'}
          ]"
        >
          <a-icon slot="prefix" type="user" :style="{ color: 'rgba(0,0,0,.25)' }"/>
        </a-input>
      </a-form-item>

      <a-form-item>
        <a-input-password
          size="large"
          placeholder="密码"
          v-decorator="[
            'password',
            {rules: [{ required: true, message: '请输入密码' }], validateTrigger: 'blur'}
          ]"
        >
          <a-icon slot="prefix" type="lock" :style="{ color: 'rgba(0,0,0,.25)' }"/>
        </a-input-password>
      </a-form-item>

      <a-form-item style="margin-top:24px">
        <a-button
          size="large"
          type="primary"
          htmlType="submit"
          class="login-button"
          :loading="state.loginBtn"
          :disabled="state.loginBtn"
        >确定</a-button>
      </a-form-item>
    </a-form>
     </a-col>
  </div>
</template>

<script>
import { mapActions } from 'vuex'
import { timeFix } from '@/utils/util'
// import { login } from '@/api/login'
import store from '@/store'

export default {
  data () {
    return {
      // 设置按钮状态,false-无按钮加载状态,true-按钮处于加载状态
      loginBtn: false,
      // login type: 0 email, 1 username, 2 telephone
      loginType: 1,
      isLoginError: false,
      errmsg: '',
      form: this.$form.createForm(this),
      state: {
        time: 60,
        loginBtn: false,
        // login type: 0 email, 1 username, 2 telephone
        loginType: 1,
        smsSendBtn: false
      }
    }
  },
  created () {

  },
  methods: {
    ...mapActions(['Login', 'Logout']),
    // handler
    handleUsernameOrEmail (rule, value, callback) {
      const { state } = this
      const regex = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/
      if (regex.test(value)) {
        state.loginType = 0
      } else {
        state.loginType = 1
      }
      callback()
    },
    handleSubmit (e) {
      e.preventDefault()
      const {
        form: { validateFields },
        state
      } = this

      state.loginBtn = true

      const validateFieldsKey = ['username', 'password']

      validateFields(validateFieldsKey, { force: true }, (err, values) => {
        if (!err) {
          const loginParams = { ...values }
          delete loginParams.username
          loginParams[!state.loginType ? 'email' : 'username'] = values.username
          store.dispatch('Login', loginParams)
            .then((res) => this.loginSuccess(res))
            .catch(err => this.requestFailed(err))
            .finally(() => {
              state.loginBtn = false
            })
        } else {
          setTimeout(() => {
            state.loginBtn = false
          }, 600)
        }
      })
    },
    loginSuccess (res) {
     if (res.code !== 1) {
       this.isLoginError = true
       this.errmsg = res.message
       setTimeout(() => {
         this.isLoginError = false
         this.errmsg = ''
       }, 4000)
     } else {
       localStorage.setItem('wifitoken', res.data)
        this.$router.push({ path: '/' })
        // 延迟 1 秒显示欢迎信息
        setTimeout(() => {
          this.$notification.success({
            message: '欢迎',
            description: `${timeFix()}，欢迎回来`
          })
        }, 1000)
        this.isLoginError = false
      }
     },
    requestFailed (err) {
      this.isLoginError = false
      this.$notification['error']({
        message: '错误',
        description: ((err.response || {}).data || {}).message || '请求出现错误，请稍后再试',
        duration: 4
      })
    }
  }
}
</script>

<style lang="less" scoped>
.user-layout-login {
  background-color: #fff;
  padding: 20px 20px 2px;
  width: 310px;
  height: 250px;
  margin: 0 auto;
  label {
    font-size: 14px;
  }

  button.login-button {
    padding: 0 15px;
    font-size: 16px;
    height: 40px;
    width: 100%;
  }
  .form{
    display: flex;
        align-items: center;
        height: 100%;
  }
  .user-login-other {
    text-align: left;
    margin-top: 24px;
    line-height: 22px;

    .item-icon {
      font-size: 24px;
      color: rgba(0, 0, 0, 0.2);
      margin-left: 16px;
      vertical-align: middle;
      cursor: pointer;
      transition: color 0.3s;

      &:hover {
        color: #1890ff;
      }
    }
  }
}
</style>
