<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">欢迎登录</h3>
      <h3 class="title">{{title}}</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="账号"
        >
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <div class="code-wrapper">
          <el-input
            v-model="loginForm.code"
            auto-complete="off"
            placeholder="验证码"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode" class="login-code-img"/>
          </div>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>© 2025 智慧图档管理系统. All rights reserved.</span>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login"
import Cookies from "js-cookie"
import { encrypt, decrypt } from '@/utils/jsencrypt'
import { getSystemConfigApi } from '@/utils/systemConfig'

export default {
  name: "Login",
  data() {
    return {
      title: process.env.VUE_APP_TITLE,
      codeUrl: "",
      loginForm: {
        username: "",
        password: "",
        rememberMe: false,
        code: "",
        uuid: ""
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入您的账号" }
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入您的密码" }
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }]
      },
      loading: false,
      // 验证码开关
      captchaEnabled: true,
      // 注册开关
      register: false,
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
    this.getSystemConfig()
    this.getCode()
    this.getCookie()
  },
  methods: {
   async getSystemConfig(){
      await getSystemConfigApi();
    },
    async getCode() {
      await getCodeImg().then(res => {
        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.img
          this.loginForm.uuid = res.uuid
        }
      })
    },
    getCookie() {
      const username = Cookies.get("username")
      const password = Cookies.get("password")
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 })
            Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 })
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 })
          } else {
            Cookies.remove("username")
            Cookies.remove("password")
            Cookies.remove('rememberMe')
          }
          this.$store.dispatch("Login", this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || "/" }).catch(()=>{})
          }).catch(() => {
            this.loading = false
            if (this.captchaEnabled) {
              this.getCode()
            }
          })
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background: #fff;
  background-image: url("../assets/images/login-background.jpg");
  background-repeat: no-repeat;
  background-position: left center;
  background-size: contain;
  position: relative;
  
  &::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    // background: linear-gradient(135deg, rgba(0, 110, 107, 0.1) 0%, rgba(0, 110, 107, 0.05) 100%);
    z-index: 0;
  }
}

.title {
  margin: 0px auto 20px auto;
  font-weight: bold;
  text-align: left;
  color: #060F2E;
  font-size: 28px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: relative;
  z-index: 1;
}

.login-form {
  border-radius: 12px;
  background: #ffffff;
  backdrop-filter: blur(10px);
  width: 600px;
  padding: 40px 30px 30px 30px;
  z-index: 1;
  margin-left: 58%;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(0, 110, 107, 0.1);
  position: relative;
  
  &::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #006E6B 0%, #008B8B 100%);
    border-radius: 12px 12px 0 0;
  }
  
  .el-input {
    height: 42px;
    margin: 8px 0;
    position: relative;
    
    .el-input__inner {
      height: 42px;
      border-radius: 8px;
      border: 2px solid #e1e5e9;
      padding-left: 40px;
      font-size: 14px;
      transition: all 0.3s ease;
      background: #ffffff;
      
      &:focus {
        border-color: #006E6B;
        box-shadow: 0 0 0 3px rgba(0, 110, 107, 0.1);
        background: #ffffff;
      }
      
      &:hover {
        border-color: #008B8B;
      }
    }
    
    .el-input__prefix {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      z-index: 1;
    }
  }
  
  .input-icon {
    height: 16px;
    width: 16px;
    margin-left: 0;
    color: #999;
    transition: color 0.3s ease;
    position: absolute;
    top: 50%;
    left: 12px;
    transform: translateY(-50%);
  }
  
  .el-form-item {
    margin-bottom: 20px;
  }
  
  .el-checkbox {
    margin-bottom: 20px;
    
    .el-checkbox__label {
      color: #666;
      font-size: 14px;
    }
    
    .el-checkbox__input.is-checked .el-checkbox__inner {
      background-color: #006E6B;
      border-color: #006E6B;
    }
  }
  
  .el-button {
    height: 42px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, #006E6B 0%, #008B8B 100%);
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    will-change: transform;
    
    &:hover {
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(0, 110, 107, 0.25);
    }
    
    &:active {
      transform: translateY(0);
      box-shadow: 0 2px 6px rgba(0, 110, 107, 0.2);
    }
  }
  
  .link-type {
    color: #006E6B;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
    
    &:hover {
      color: #008B8B;
      text-decoration: underline;
    }
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.code-wrapper {
  display: flex;
  gap: 10px;
  align-items: center;
  
  .el-input {
    flex: 1;
  }
}

.login-code {
  width: 120px;
  height: 42px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid #e1e5e9;
  cursor: pointer;
  transition: all 0.3s ease;
  flex-shrink: 0;
  
  &:hover {
    border-color: #006E6B;
    transform: scale(1.02);
  }
  
  img {
    cursor: pointer;
    vertical-align: middle;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}

.el-login-footer {
  height: 60px;
  line-height: 60px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: rgba(255, 255, 255, 0.9);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.5px;
  background: rgba(0, 110, 107, 0.1);
  backdrop-filter: blur(10px);
  z-index: 1;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.login-code-img {
  height: 42px;
}

// 响应式优化
@media (max-width: 1200px) {
  .login-form {
    margin-left: 50%;
    width: 500px;
  }
}

@media (max-width: 768px) {
  .login {
    background-position: center;
  }
  
  .login-form {
    margin-left: 0;
    width: 90%;
    max-width: 400px;
    padding: 30px 20px;
  }
  
  .title {
    font-size: 24px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .login-form {
    width: 95%;
    padding: 25px 15px;
  }
  
  .title {
    font-size: 20px;
  }
}
</style>
