<script setup lang="ts">
import { ref, reactive } from 'vue'
import { useRouter, useRoute } from 'vue-router'
import { useUserStore } from '@/store/user'
import { UserFilled } from '@element-plus/icons-vue'

// 表单验证
const validateUsername = (rule: any, value: string, callback: Function) => {
  if (value.trim().length < 3) {
    callback(new Error('用户名不能少于3个字符'))
  } else {
    callback()
  }
}

const validatePassword = (rule: any, value: string, callback: Function) => {
  if (value.length < 6) {
    callback(new Error('密码不能少于6个字符'))
  } else {
    callback()
  }
}

const router = useRouter()
const route = useRoute()
const userStore = useUserStore()

// 数据
const loginForm = reactive({
  username: '',
  password: ''
})

const loginRules = {
  username: [{ required: true, trigger: 'blur', validator: validateUsername }],
  password: [{ required: true, trigger: 'blur', validator: validatePassword }]
}

const loading = ref(false)
const passwordType = ref('password')
const redirect = ref<string | undefined>(undefined)

// 监听路由变化
if (route.query?.redirect) {
  redirect.value = route.query.redirect as string
}

// 密码显示切换
const showPwd = () => {
  passwordType.value = passwordType.value === 'password' ? '' : 'password'
}

// 登录表单引用
const loginFormRef = ref<any>(null)

// 登录方法
const handleLogin = () => {
  loginFormRef.value.validate(async (valid: boolean) => {
    if (valid) {
      loading.value = true
      try {
        await userStore.login(loginForm)
        router.push({ path: redirect.value || '/' })
      } catch (error: any) {
        console.error('登录失败:', error)
      } finally {
        loading.value = false
      }
    } else {
      console.log('登录表单验证失败')
    }
  })
}
</script>

<template>
  <div class="login-container">
    <el-form 
      ref="loginFormRef"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">FK Spider Admin</h3>
        <div class="sub-title">爬虫管理系统</div>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <el-icon><UserFilled /></el-icon>
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="用户名"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <el-icon><Lock /></el-icon>
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <el-icon>
            <component :is="passwordType === 'password' ? 'View' : 'Hide'" />
          </el-icon>
        </span>
      </el-form-item>

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

      <div class="tips">
        <!-- 提示信息可以根据需要添加 -->
      </div>
    </el-form>
  </div>
</template>

<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: 520px;
    max-width: 100%;
    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 10px auto;
    text-align: center;
    font-weight: bold;
  }
  
  .sub-title {
    font-size: 14px;
    color: #ddd;
    margin: 0px auto 40px auto;
    text-align: center;
  }
  }

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

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

.login-container {
  .el-input {
    height: 47px;
    width: 85%;

    .el-input__wrapper {
      background-color: transparent;
      border: 0px;
    }

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      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;
  }

  .el-button {
    height: 34px;
  }
}
</style>
