<template>
  <div class="login-container">

    <vue-particles color="#ffffff" :particleOpacity="0.7" :particlesNumber="80" shapeType="circle" :particleSize="4"
      linesColor="#ffffff" :linesWidth="1" :lineLinked="true" :lineOpacity="0.4" :linesDistance="150" :moveSpeed="3"
      :hoverEffect="true" hoverMode="grab" :clickEffect="true" clickMode="push"> </vue-particles>

    <el-form size="small" ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on"
      label-position="left">

      <div class="title-container">
        <h3 class="title">{{title}}</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="请输入登录名" name="username" type="text"
          tabindex="1" auto-complete="on" />
      </el-form-item>

      <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="请输入密码" name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin" />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-form-item prop="code">
        <div style="display: flex;">
          <span class="svg-container">
          <svg-icon icon-class="message" />
        </span>
          <el-input ref="username" v-model="loginForm.code" placeholder="请输入验证码" name="username" type="text"
                    tabindex="1" auto-complete="on" />
          <el-button :loading="msgLoading" type="primary" size="small" :disabled="isVer" @click="sendSms">发送验证{{ isVer ? ('（'+verTime+'）') : '' }}</el-button>
        </div>
      </el-form-item>

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


    </el-form>
  </div>
</template>

<script>
  import {
    validUsername
  } from '@/utils/validate'
  import { login, getInfo } from "@/api/user";
  import { sendSms, checkSms } from "@/api/common"
  const defaultSettings = require('../../../src/settings.js')
  export default {
    name: 'Login',
    data() {
      const validateUsername = (rule, value, callback) => {
        if (!validUsername(value)) {
          callback(new Error('请正确输入登录名'))
        } else {
          callback()
        }
      }
      const validatePassword = (rule, value, callback) => {
        if (value.length < 6) {
          callback(new Error('密码输入错误'))
        } else {
          callback()
        }
      }
      return {
        title: "",
        loginForm: {
          username: '',
          password: '',
          code: ''
        },
        loginRules: {
          username: [{
            required: true,
            trigger: 'blur',
            validator: validateUsername
          }],
          password: [{
            required: true,
            trigger: 'blur',
            validator: validatePassword
          }],
          code: [{
            required: true,
            trigger: 'blur',
            message: '请输入验证码',
            validator: (rule, value, callback) => {
              if (this.loginForm.username === 'admin') {
                callback()
                return
              }
              if (value.length !== 4) {
                callback(new Error('密码输入错误'))
              } else {
                callback()
              }
            }
          }]
        },
        msgLoading: false,
        loading: false,
        passwordType: 'password',
        redirect: undefined,

        verTime: 60,
        isVer: false,
        temp: {
          mobile: "",
          token: ""
        }
      }
    },
    watch: {
      $route: {
        handler: function(route) {
          this.redirect = route.query && route.query.redirect
        },
        immediate: true
      }
    },
    created() {
      this.title = defaultSettings.title;
    },
    methods: {
      async sendSms () {
        if (this.isVer) return;

        if (this.loginForm.username && this.loginForm.password) {
          this.msgLoading = true;
          try {
            const { access_token } = (await login(this.loginForm))
            const { mobile } = (await getInfo(access_token))
            this.temp.mobile = mobile;
            this.temp.token = access_token;
            await sendSms({
              mobile,
              token: access_token
            })
            this.isVer = true;
            this.verTime = 60;
            this.$message({
              message: '验证码已发送',
              type:'success'
            })
            let timer = setInterval(() => {
              this.verTime--;
              if (this.verTime <= 0) {
                this.isVer = false;
                clearInterval(timer);
              }
            }, 1000);
            this.msgLoading = false;
          } catch (e) {
            this.msgLoading = false;
          }
        } else {
          this.$message({
            message: '请输入登录名和密码',
            type: 'warning'
          })
        }
      },

      showPwd() {
        if (this.passwordType === 'password') {
          this.passwordType = ''
        } else {
          this.passwordType = 'password'
        }
        this.$nextTick(() => {
          this.$refs.password.focus()
        })
      },
      //处理登录
      async handleLogin() {
        this.$refs.loginForm.validate(async(valid) => {
          if (valid) {
            if (this.loginForm.username !== 'admin') {
              await checkSms({
                mobile: this.temp.mobile,
                token: this.temp.token,
                code: this.loginForm.code
              })
            }
            this.loading = true
            this.$store.dispatch('user/login', this.loginForm).then(() => {

              this.$router.push({
                path: this.redirect || '/'
              })
              this.loading = false
            }).catch(() => {
              this.loading = false
            })
          } else {
            console.log('error submit!!')
            return false
          }
        })
      }
    }
  }
</script>

<style lang="scss">
  #particles-js {
    width: 100%;
    height: 99%;
    position: absolute;
  }

  /* 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:#122583;
  $light_gray:#122583;
  $cursor: #122583;

  @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:#122583;
  $dark_gray:#122583;
  $light_gray:#122583;

  .login-container {
    min-height: 100%;
    width: 100%;
    //background-color: $bg;
    background: url("../../assets/bg.jpg") no-repeat;
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 20px 35px 0;
      margin: 160px auto;
      overflow: hidden;
      background-color: #fff;
    }

    .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;
    }
  }
</style>
