<template>
  <div class="login-container">
    <el-row>
      <el-col :lg="7" :md="6" :sm="24" :xl="7" :xs="24">
        <div style="color: transparent">{{ translateTitle('占位符') }}</div>
      </el-col>
      <el-col :lg="10" :md="12" :sm="24" :xl="10" :xs="24">
        <el-form
          ref="form"
          class="login-form"
          label-position="left"
          :model="form"
          :rules="rules"
        >
          <div class="title">{{ title }}</div>
          <div class="title-tips"></div>
          <el-form-item prop="user_account">
            <el-input
              v-model.trim="form.user_account"
              v-focus
              :placeholder="translateTitle('请输入用户名')"
              tabindex="1"
              type="text"
            >
              <template #prefix>
                <vab-icon icon="user-line" />
              </template>
            </el-input>
          </el-form-item>
          <el-form-item prop="user_password">
            <el-input
              :key="passwordType"
              ref="password"
              v-model.trim="form.user_password"
              :placeholder="translateTitle('请输入密码')"
              tabindex="2"
              :type="passwordType"
              @keyup.enter.native="handleLogin"
            >
              <template #prefix>
                <vab-icon icon="lock-line" />
              </template>
              <template v-if="passwordType === 'password'" #suffix>
                <vab-icon
                  class="show-password"
                  icon="eye-off-line"
                  @click="handlePassword"
                />
              </template>
              <template v-else #suffix>
                <vab-icon
                  class="show-password"
                  icon="eye-line"
                  @click="handlePassword"
                />
              </template>
            </el-input>
          </el-form-item>
          <!-- 验证码验证逻辑需自行开发，如不需要验证码功能建议注释 -->
          <el-form-item prop="verify_code">
            <el-input
              v-model.trim="form.verify_code"
              :placeholder="translateTitle('验证码') + previewText"
              tabindex="3"
              type="text"
              @keyup.enter.native="handleLogin"
            >
              <template #prefix>
                <vab-icon icon="barcode-box-line" />
              </template>
            </el-input>
            <el-image class="code" :src="codeUrl" @click="changeCode" />
          </el-form-item>
          <el-button
            class="login-btn"
            :loading="loading"
            type="primary"
            @click="handleLogin"
          >
            {{ translateTitle('登录') }}
          </el-button>
          <router-link v-if="false" to="/register">
            <div style="margin-top: 20px">{{ translateTitle('注册') }}</div>
          </router-link>
        </el-form>
      </el-col>
      <el-col :lg="7" :md="6" :sm="24" :xl="7" :xs="24">
        <div style="color: transparent">{{ translateTitle('占位符') }}</div>
      </el-col>
    </el-row>
    <div class="internet-content-provider">
      <a href="https://beian.miit.gov.cn/" style="color: #fff" target="_blank">
        桂ICP备2024040484号-1
      </a>
    </div>
  </div>
</template>

<script>
import { mapActions, mapGetters } from 'vuex'
import { translateTitle } from '@/utils/i18n'
import { isPassword } from 'vue-plugin-utils'
import { URL } from '@/config'

export default {
  name: 'Login',
  directives: {
    focus: {
      inserted(el) {
        el.querySelector('input').focus()
      },
    },
  },
  beforeRouteLeave(to, from, next) {
    clearInterval(this.timer)
    next()
  },
  data() {
    const validateUsername = (rule, value, callback) => {
      if ('' === value)
        callback(new Error(this.translateTitle('用户名不能为空')))
      else callback()
    }
    const validatePassword = (rule, value, callback) => {
      if (!isPassword(value))
        callback(new Error(this.translateTitle('密码不能少于6位')))
      else callback()
    }
    return {
      form: {
        user_account: '',
        user_password: '',
        verify_code: '',
      },
      rules: {
        user_account: [
          {
            required: true,
            trigger: 'blur',
            validator: validateUsername,
          },
        ],
        user_password: [
          {
            required: true,
            trigger: 'blur',
            validator: validatePassword,
          },
        ],
        verify_code: [
          {
            required: true,
            trigger: 'blur',
            message: '验证码不能空',
          },
        ],
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,
      timer: 0,
      codeUrl: URL.verifyCode,
      previewText: '',
      verify_token: '',
    }
  },
  computed: {
    ...mapGetters({
      title: 'settings/title',
    }),
  },
  watch: {
    $route: {
      handler(route) {
        this.redirect = (route.query && route.query.redirect) || '/'
      },
      immediate: true,
    },
  },
  mounted() {
    this.changeCode()
    if (URL.api_url == 'https://demo.lancerdt.com') {
      this.form.user_account = 'demoadmin'
      this.form.user_password = '111111'
    }

    // 为了演示效果，会在官网演示页自动登录到首页，正式开发可删除
    if (
      document.domain === 'vue-admin-beautiful.com' ||
      document.domain === 'chu1204505056.gitee.io'
    ) {
      this.previewText = '（演示地址验证码可不填）'
      this.timer = setTimeout(() => {
        this.handleLogin()
      }, 5000)
    }
  },
  methods: {
    ...mapActions({
      login: 'user/login',
    }),
    translateTitle,
    handlePassword() {
      this.passwordType === 'password'
        ? (this.passwordType = '')
        : (this.passwordType = 'password')
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleRoute() {
      return this.redirect === '/404' || this.redirect === '/403'
        ? '/'
        : this.redirect
    },
    handleLogin() {
      this.$refs.form.validate(async (valid) => {
        if (valid) {
          try {
            this.loading = true
            this.form.verify_token = this.verify_token
            let code = await this.login(this.form)
            if (1003 == code || 1005 == code) {
              this.changeCode()
            }

            let routes = this.$router.options.routes
            if (routes) {
              if (!routes.some((route) => route.path === this.redirect)) {
                this.redirect = '/index'
              }
            }
            await this.$router.push(this.handleRoute())
          } finally {
            this.loading = false
          }
        }
      })
    },
    changeCode() {
      // window.open(
      //   `https://mal1.gpxscs.cn/admin/#/login?loginInfo=JsoN.parse(J.stringify(res.data))`
      // )

      // this.codeUrl = `https://www.oschina.net/action/user/captcha?timestamp=${new Date().getTime()}`
      this.verify_token = new Date().getTime()
      this.codeUrl = URL.verifyCode + '?verify_token=' + this.verify_token
    },
  },
}
</script>

<style lang="scss" scoped>
.login-container {
  height: 100vh;
  background: url('~@/assets/login_images/background.jpg') center center fixed
    no-repeat;
  background-size: cover;

  .internet-content-provider {
    position: absolute;
    text-align: center;
    width: 100%;
    color: #fff;
  }
}

.login-form {
  position: relative;
  max-width: 100%;
  padding: 4.5vh;
  margin: calc((100vh - 475px) / 2) 5vw 5vw;
  overflow: hidden;
  background: url('~@/assets/login_images/login_form.png');
  background-size: 100% 100%;

  .title {
    font-size: 36px;
    font-weight: 500;
    color: $base-color-white;
    text-align: center;
  }

  .title-tips {
    margin-top: 29px;
    font-size: 26px;
    font-weight: 400;
    color: $base-color-white;
  }

  .login-btn {
    margin: auto;
    display: inherit;
    width: 100%;
    height: 50px;
    margin-top: 5px;
    border: 0;
    font-size: 18px;

    &:hover {
      opacity: 0.9;
    }

    .forget-passwordword {
      width: 100%;
      margin-top: 40px;
      text-align: left;

      .forget-password {
        width: 129px;
        height: 19px;
        font-size: 20px;
        font-weight: 400;
        color: rgba(92, 102, 240, 1);
      }
    }
  }

  .tips {
    margin-bottom: 10px;
    font-size: $base-font-size-default;
    color: $base-color-white;

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

  .title-container {
    position: relative;

    .title {
      margin: 0 auto 40px auto;
      font-size: 34px;
      font-weight: bold;
      color: $base-color-blue;
      text-align: center;
    }
  }

  i {
    position: absolute;
    top: 8px;
    left: 5px;
    z-index: $base-z-index;
    font-size: 16px;
    color: #ccc;
    cursor: pointer;
    user-select: none;
  }

  .show-password {
    position: absolute;
    right: 25px;
    left: -35px;
    font-size: 16px;
    color: #ccc;
    cursor: pointer;
    user-select: none;
  }

  ::v-deep {
    .el-form-item {
      padding-right: 0;
      margin: 20px 0;
      color: #454545;
      background: transparent;
      border: 1px solid transparent;
      border-radius: 2px;

      &__content {
        min-height: $base-input-height;
        line-height: $base-input-height;
      }

      &__error {
        position: absolute;
        top: 100%;
        left: 18px;
        font-size: $base-font-size-small;
        line-height: 18px;
        color: $base-color-red;
      }
    }

    .el-input {
      box-sizing: border-box;

      input {
        height: 48px;
        padding-left: 35px;
        font-size: $base-font-size-default;
        line-height: 58px;
        background: #f6f4fc;
        border: 0;
      }
    }

    .code {
      position: absolute;
      top: 4px;
      right: 4px;
      cursor: pointer;
      border-radius: $base-border-radius;
    }
  }
}
</style>
