<template>
  <div class="login-container">
    <div ref="particle" class="login-bg">
      <div class="login-bg__img" />
    </div>
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <div class="title-container">
        <h3 class="title">赣州房地产管理系统</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="请输入账号"
          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>

      <div class="xl-form lf-footer">
        <el-button :loading="loading" type="primary" class="xl-form-btn" @click.native.prevent="handleLogin">登录</el-button>
      </div>

      <!-- <div class="tips">
        <span style="margin-right:20px;">username: admin</span>
        <span> password: any</span>
      </div> -->

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

<script>
import canvasParticle from '@/utils/particle'
export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (value.length < 4) {
        callback(new Error('账户名有误'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 4) {
        callback(new Error('密码有误'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        username: '',
        password: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  mounted() {
    canvasParticle({ el: this.$refs.particle })
  },
  methods: {
    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(() => {
            window.setTimeout(() => {
              this.$router.push({ path: '/'})
              this.$router.go(0)
              this.loading = false
            }, 1000)
            // this.$router.push({ path: this.redirect || '/' })
            // if (this.redirect && this.redirect !== '/dashboard') {
            //   window.setTimeout(() => {
            //     this.$router.go(0)
            //   }, 100)
            // }
          }).catch(() => {
            this.loading = false
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</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: 50px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 50px;
      caret-color: $cursor;

      &:-webkit-autofill {
        // box-shadow: 0 0 0px 1000px $bg inset !important;
        box-shadow: 0 0 0px 1000px #5d6a77 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, 0.3);
    border-radius: 5px;
    color: #454545;
  }
  .el-form-item__error {
    color: #fff;
  }
}
</style>

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

.login-container {
  height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;
  position: relative;
  .login-form {
    position: absolute;
    width: 550px;
    height: 330px;
    top: 50%;
    left: 50%;
    border-radius: 10px;
    transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.4);
    padding: 30px;
    // ::v-deep .el-form-item__content {
    //   background: #000;
    //   opacity: .3;
    // }
    .lf-footer {
      text-align: center;
      .xl-form-btn {
        width: 200px;
        height: 50px;
        font-size: 18px;
        border-radius: 6px;
      }
    }
  }

  .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;
  }
}

.login-bg {
  width: 100%;
  height: 100%;
  background: #3a546c;
  overflow: hidden;
  .login-bg__img {
    height: 100%;
    background: url(./login_bg.jpg) no-repeat center center;
    transform: scale(1);
    -webkit-transform: scale(1);
    animation: 15s scale alternate infinite;
    -webkit-animation: 15s scale alternate infinite;
  }
}
</style>
