<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h2 class="title" >建科•小智权限管理系统</h2>
      <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">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @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>
      </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>上海建科工程咨询有限公司 版权所有CopyRight © 2025 ALL RIGHTS RESERVED.</span>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
// ✅ 安全修复：使用 localStorage 替代 Cookies
// import Cookies from "js-cookie";
// ✅ 安全修复：只导入encrypt，不导入decrypt（decrypt已被删除）
import { encrypt } from '@/utils/jsencrypt'

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      loginForm: {
        // ✅ 安全修复：移除默认账号密码
        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.getCode();
    this.loadRememberedUser();  // ✅ 改名，更准确
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        // ✅ 安全修复：移除console.log或仅在开发环境使用
        if (process.env.NODE_ENV === 'development') {
          console.log('验证码获取成功');
        }
        this.captchaEnabled = res.data.captchaEnabled === undefined ? true : res.data.captchaEnabled;
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.data.img;
          this.loginForm.uuid = res.data.uuid;
        }
      });
    },

    // ✅ 安全修复：只加载用户名，不加载密码（使用 localStorage）
    loadRememberedUser() {
      const rememberedUser = localStorage.getItem("rememberedUser");
      if (rememberedUser) {
        this.loginForm.userName = rememberedUser;
        this.loginForm.rememberMe = true;
      }
    },

    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;

          // ✅ 安全修复：只保存用户名，不保存密码（使用 localStorage）
          if (this.loginForm.rememberMe) {
            localStorage.setItem("rememberedUser", this.loginForm.userName);
          } else {
            localStorage.removeItem("rememberedUser");
            // 清理旧的存储（如果存在）
            localStorage.removeItem("userName");
            localStorage.removeItem("password");
            localStorage.removeItem("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-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #409EFF;
  font-family: Arial;
  font-size: 30px;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 38px;
    input {
      height: 38px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 38px;
}
</style>
