<template>
  <div class="login-container">
    <div class="title-container">
      <h3 class="title"><el-image class="logo" :src="logoImage" /></h3>
    </div>
    <div class="login-form-wrap">
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">
        <div class="title-container">
          <h3 class="form-title">用户登录</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"
            auto-complete="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="密码"
              name="password"
              tabindex="2"
              auto-complete="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>

        <p class="tip-text">
          <span>*</span> 忘记密码可咨询管理人员重新获取
        </p>

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

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

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

<script>
import { mapGetters } from 'vuex'
export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (value.length < 1) {
        callback(new Error('用户名不能为空'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码不能少于6位'))
      } 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',
      capsTooltip: false,
      showDialog: false,
      redirect: undefined,
      logoImage: require('@/assets/images/logo/logo.png'),
      otherQuery: {}
    }
  },
  computed: {
    ...mapGetters([
      'permission_routes',
      'permits'
    ])
  },
  watch: {
    $route: {
      handler: function(route) {
        // this.redirect = route.query && route.query.redirect
        // console.log(route.query)
        if (route.query.username) {
          this.$store.dispatch('user/login', {
            username: route.query.username,
            password: route.query.password
          }).then(async(res) => {
            this.loading = false
            this.$router.push({ path: '/', query: this.otherQuery })
          }).catch(() => {
            this.loading = false
          })
        }
      },
      immediate: true
    }
  },
  mounted() {
    if (this.loginForm.username === '') {
      this.$refs.username.focus()
    } else if (this.loginForm.password === '') {
      this.$refs.password.focus()
    }
  },
  destroyed() {
    localStorage.clear()
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    checkCapslock(e) {
      const { key } = e
      this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm).then(async(res) => {
            this.loading = false
            this.$router.push({ path: '/', query: this.otherQuery })
          }).catch(() => {
            this.loading = false
          })
        } else {
          return false
        }
      })
    },
    async detectionRedirectPath() {
      const permits = await this.$store.dispatch('user/getRoute')
      const accessRoutes = await this.$store.dispatch('permission/generateRoutes', permits)
      const routes = accessRoutes.map(item => item.path)
      const redirect = routes.includes(this.redirect) ? this.redirect : '/'
      this.$router.addRoutes(accessRoutes)
      this.$router.push({ path: redirect, query: this.otherQuery })
      this.loading = 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%;
    background:none;
    border:none;
    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-image: url("../../assets/images/login/login_ornament.png");
        background-size: 910px 870px;
        background-repeat: no-repeat;
        background-color: #071A29;
        background-position:344px 106px;
        overflow: hidden;
        position: relative;
        .login-form-wrap {
            position: absolute;
            background: rgba(255, 255, 255, .08);
            right: 10%;
            top: 30%;
            padding: 10px;
        }

        .login-form {
            width: 367px;
            height: 319px;
            max-width: 100%;
            padding: 30px;
            margin: 0 auto;
            overflow: hidden;
            background: rgba(255, 255, 255, .08);
            border-radius: 5px;

            .icon-image {
                width: 20px;
                height: 20px;
                position: relative;
                top: 6px;
            }

            .form-title {
                font-size: 14px;
                font-weight: bold;
                color: #FFFFFF;
                text-align: center;
                margin-top: 0;
                margin-bottom: 34px;
            }

            .tip-text {
                font-size: 12px;
                font-weight: bold;
                color: #7C878E;
                margin-bottom: 20px;

                span {
                    color: #E41111;
                    position: relative;
                    top: 2px;
                    margin-right: 5px;
                }
            }
        }

        .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: 28px;
                color: $light_gray;
                margin: 26px auto 40px 43px;
                text-align: left;
                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;
        }

        @media only screen and (max-width: 470px) {
            .thirdparty-button {
                display: none;
            }
        }
    }
</style>
