<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">川仪READOPC</h3>
      <el-form-item prop="username">
        <el-input
            v-model="loginForm.username"
            type="text"
            auto-complete="off"
            placeholder="帐号"
        >
          <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" v-if="rememberMeView" 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>Copyright © {{ copyrightDate }} cqcy.com All Rights Reserved.</span>
    </div>
  </div>
</template>

<script>
import Cookies from "js-cookie";
import { encrypt } from '@/utils/jsencrypt'
import errorCode from '@/utils/errorCode'
import { login, getCode, getPublicKey } from '@/api/user';
import { Message } from "element-ui";
import { setUserInfo } from "@/utils/auth";

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      publicKey: "",
      loginForm: {
        username: "",
        password: "",
        rememberMe: false,
        code: "",
        uid: ""
      },
      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,
      // 记住帐号开关
      rememberMeView: false,
      // 版权信息
      copyrightDate: new Date().getFullYear(),
      redirect: undefined
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true
    }
  },
  created() {
    this.getCode();
  },
  methods: {
    /**
     * 获取验证码
     */
    getCode() {
      getCode(true).then(res => {
        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled;
        if (this.captchaEnabled) {
          let data = res.data;
          this.loginForm.uid = data.uid;
          this.publicKey = data.publicKey;
          this.codeUrl = "data:image/gif;base64," + data.verifyCode;
        }
      });
    },
    /**
     * 获取公钥
     */
    getPublicKey() {
      getPublicKey().then(res => {
        this.publicKey = res.data;
      });
    },
    /**
     * 登录
     */
    handleLogin() {
      if (!this.publicKey) {
        const msg = errorCode[900];
        Message.error(msg)
        return
      }
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          const pwd = encrypt(this.loginForm.password, this.publicKey)
          login(this.loginForm.username.trim(), pwd, this.loginForm.code, this.loginForm.uid).then(res => {
            setUserInfo(res.data.user, res.data.token)
            this.$router.push({ path: this.redirect || "/" }).catch(()=>{});
          }).catch((e) => {
            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-color: #2c3e50;
  background-image: url("../assets/images/loginbg.png");
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.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>
