<template>
  <div class="login">
    <div class="login-main">
      <div class="caption">
        <h4 class="caption-title">{{ systemName }}</h4>
        <p class="caption-remark">
          欢迎使用 {{ systemName }}，您的卡券、储值卡、计次卡等会员营销小管家！
        </p>
      </div>
    </div>
    <div class="login-form">
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules">
        <div class="title">
          <img class="logo" src="@/assets/logo/logo.png" />
          <span class="name">{{ systemName }}</span>
        </div>
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            type="text"
            auto-complete="off"
            clearable
            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"
            clearable
            @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="captchaCode" v-if="captchaOnOff">
          <el-input
            v-model="loginForm.captchaCode"
            auto-complete="off"
            placeholder="请输入验证码"
            style="width: 63%"
            clearable
            @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%; line-height: 24px; font-size: 16px"
            @click.native.prevent="handleLogin"
          >
            <span v-if="!loading">立即登录</span>
            <span v-else>登 录 中...</span>
          </el-button>
        </el-form-item>
      </el-form>
      <div class="copy-right">
        <span
          >Copyright © 2022-2024
          <a class="link" href="https://www.fuint.cn">fuint.cn</a> All Rights
          Reserved.</span
        >
      </div>
    </div>
  </div>
</template>

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

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      systemName: process.env.VUE_APP_TITLE,
      loginForm: {
        username: "admin",
        password: "123456",
        rememberMe: false,
        captchaCode: "",
        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" },
        ],
        captchaCode: [
          { required: true, trigger: "change", message: "请输入验证码" },
          { min: 4, max: 6, message: "请输入验证码", trigger: "blur" },
        ],
      },
      loading: false,
      // 验证码开关
      captchaOnOff: true,
      // 注册开关
      register: false,
      redirect: undefined,
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  created() {
    this.getCode();
    this.getCookie();
  },
  methods: {
    getCode() {
      const app = this;
      getCodeImg().then((response) => {
        app.codeUrl = response.data.captcha;
        app.loginForm.uuid = response.data.uuid;
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get("rememberMe");
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password:
          password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
        uuid: this.loginForm.uuid,
      };
    },
    handleLogin() {
      const app = this;
      if (app.loading) {
        return false;
      }
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          app.loading = true;
          if (app.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");
          }
          app.$store
            .dispatch("Login", this.loginForm)
            .then(() => {
              app.$router.push({ path: this.redirect || "/" }).catch(() => {});
            })
            .catch(() => {
              app.loading = false;
              if (app.captchaOnOff) {
                app.getCode();
              }
            });
        }
      });
    },
  },
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  height: 100%;
  width: 100%;
  position: relative;
  .login-main {
    background-image: url("../assets/images/login-bg.png");
    position: fixed;
    left: 0;
    right: 500px;
    top: 0;
    bottom: 0;
    transform: translateZ(0);
    overflow: hidden;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    .caption {
      .caption-title {
        font-size: 30px;
        font-weight: bold;
        line-height: 0px;
      }
      .caption-remark {
        line-height: 0px;
      }
      background: rgba(0, 0, 0, 0.7);
      color: #ffffff;
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 30px 50px;
      font-size: 14px;
      z-index: 20;
      font-weight: 300;
      min-width: 680px;
    }
  }
  .login-form {
    width: 500px;
    height: 100%;
    float: right;
    padding: 80px 60px;
    background: #fff;
    .title {
      text-align: left;
      font-size: 24px;
      color: #707070;
      padding: 20px 20px 40px 0px;
      .logo {
        height: 24px;
        width: 24px;
        vertical-align: middle;
      }
      .name {
        margin-left: 5px;
      }
    }
    .login-tip {
      font-size: 13px;
      text-align: center;
      color: #bfbfbf;
    }
    .login-code {
      width: 33%;
      height: 38px;
      float: right;
      img {
        cursor: pointer;
        vertical-align: middle;
      }
    }
    .login-code-img {
      height: 45px;
    }
    .el-input {
      height: 45px;
      input {
        height: 45px;
      }
    }
    .input-icon {
      height: 45px;
      width: 14px;
      margin-left: 2px;
    }
    .copy-right {
      color: #888888;
      text-align: center;
      font-size: 12px;
      .link {
        color: #ff5b57;
        font-weight: bold;
      }
    }
  }
}
</style>
