<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      autocomplete="on"
      label-position="left">

      <div class="title-container">
        <h3 class="title">{{appName}}</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="Username"
          name="username"
          type="text"
          tabindex="1"
          autocomplete="on" />
      </el-form-item>

      <el-tooltip
        v-model="capsTooltip"
        content="Caps lock is On"
        placement="right"
        manual>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            :type="passwordType"
            placeholder="Password"
            name="password"
            tabindex="2"
            autocomplete="on"
            @keyup.native="checkCapslock"
            @blur="capsTooltip = false"
            @keyup.enter.native="handleLogin"
          />
          <span
            class="show-pwd"
            @click="showPwd">
            <svg-icon
              :icon-class="passwordType === 'password'
              ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
      </el-tooltip>

      <el-button
        :loading="loading"
        type="primary"
        style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin">
        Login
      </el-button>

    </el-form>
    <div class="copyinfo">©{{copyYear}}&nbsp; {{company}}</div>
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import VueRouter from 'vue-router'
import { Message } from 'element-ui'
import settings from '../../settings.js'
import {getUserName} from '../../utils/auth.js'
const { isNavigationFailure, NavigationFailureType } = VueRouter

export default {
  name: 'Login',
  data() {
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('The password can not be less than 6 digits'))
      } else {
        callback()
      }
    }
    return {
      year: 2023,
      appName: settings.title,
      company: settings.company,
      loginForm: {
        username: '',
        password: ''
      },
      loginRules: {
        username: [{
          required: true,
          trigger: 'blur',
        }],
        password: [{
          required: true,
          trigger: 'blur',
          validator: validatePassword
        }]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {}
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        const query = route.query
        if (query) {
          this.redirect = query.redirect
          this.otherQuery = this.getOtherQuery(query)
        }
      },
      immediate: true
    }
  },
  computed: {
    copyYear() {
      const year = new Date().getFullYear();
      if (year > this.year) {
        return this.year + "-" + year;
      } else {
        return this.year;
      }
    }
  },
  created() {
    // window.addEventListener('storage', this.afterQRScan)
    const user = getUserName()
    if (user) {
      this.loginForm.username = user;
    }
  },
  mounted() {
    if (this.loginForm.username === '') {
      this.$refs.username.focus()
    } else if (this.loginForm.password === '') {
      this.$refs.password.focus()
    }
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    checkCapslock(e) {
      const { key } = e
      this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm)
            .then((response) => {
              let path = this.redirect || '/'
              if (response.data.resources.length > 0) {
                path =  response.data.resources[0].resourcePath
              }
              if (response.data.roleName === "MCST") {
                path = '/site-management'
              }
              this.$router.push({
                path: path,
                query: this.otherQuery,
              }).catch((failure) => {
                if (!isNavigationFailure(failure, NavigationFailureType.redirected)) {
                  throw failure
                }
              })
              this.loading = false
            })
            .catch((error) => {
              Message.error(error.message)
              this.loading = false
            })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    getOtherQuery(query) {
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== 'redirect') {
          acc[cur] = query[cur]
        }
        return acc
      }, {})
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:#fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 100%;
    max-width: 520px;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }
  
  .copyinfo {
    left: 0;
    right: 0;
    bottom: 10px;
    color: #e0e0e0;
    font-size: 12px;
    user-select: none;
    text-align: center;
    position: absolute;
    transform: scale(.8);
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
  
  @media screen and (max-width: 520px) {
    .login-form {
      padding: 28vw 20px 0;
    }
  }
}
</style>
