<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
    >
      <div class="title-container">
        <h3 class="title">智慧校园公寓管理端</h3>
      </div>

      <el-form-item prop="userName">
        <span class="svg-container">
          <div class="user"></div>
        </span>
        <el-input
          v-model="loginForm.userName"
          placeholder="用户名"
          type="text"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <div class="password"></div>
        </span>
        <el-input
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <div :class="passwordType === 'password' ? 'eye_close' : 'eye'"></div>
        </span>
      </el-form-item>

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

<script>
export default {
  name: "Login",
  data() {
    // 自定义校验规则
    const validateUsername = (rule, value, callback) => {
      if (!value) {
        callback(new Error("请输入用户名"));
      } else {
        callback();
      }
    };
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error("密码不少于6位"));
      } else {
        callback();
      }
    };
    return {
      // 表格绑定数据
      loginForm: {
        userName: "",
        password: "",
      },
      // 校验规则
      loginRules: {
        userName: [
          { required: true, trigger: "blur", validator: validateUsername },
        ],
        password: [
          { required: true, trigger: "blur", validator: validatePassword },
        ],
      },
      // 加载中效果
      loading: false,
      // 密码显示隐藏控制
      passwordType: "password",
      redirect: undefined,
    };
  },
  watch: {
    // 监听路由地址变化
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  methods: {
    // 密码显示隐藏控制函数
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      // 重新渲染后使密码框聚焦
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    // 登录函数
    handleLogin() {
      // 校验用户名密码是否符合验证规则
      this.$refs.loginForm.validate((valid) => {
        // 符合验证规则
        if (valid) {
          this.loading = true;
          // 从仓库调用login函数
          // this.$store
          //   .dispatch("user/login", this.loginForm)
          //   .then(() => {
          this.$router.push({ path: this.redirect || "/home" });
          this.loading = false;
          // })
          // .catch(() => {
          //   this.loading = false;
          // });
        }
        // 不符合验证规则
        else {
          console.log("提交失败!!");
          return false;
        }
      });
    },
  },
};
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $bg;
  }
}

/* 重置 element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $bg;
      height: 47px;
      caret-color: $bg;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px #e5e5e5 inset !important;
        -webkit-text-fill-color: $bg !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;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;

.login-container {
  width: 100vw;
  height: 100vh;
  min-width: 1280px;
  min-height: 800px;
  background: url(../../assets/images/bg.png);
  background-size: 100% 100%;
  overflow: hidden;

  .login-form {
    width: 520px;
    margin-top: 310px;
    margin-left: 1080px;
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $bg;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
    .user {
      width: 20px;
      height: 20px;
      background: url(../../assets/images/user.png);
      background-size: 100% 100%;
    }
    .password {
      width: 20px;
      height: 20px;
      background: url(../../assets/images/password.png);
      background-size: 100% 100%;
    }
  }

  .title-container {
    position: relative;

    .title {
      font-size: 28px;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $bg;
    cursor: pointer;
    user-select: none;
    .eye_close {
      margin-top: 7px;
      width: 20px;
      height: 20px;
      background: url(../../assets/images/eye_close.png);
      background-size: 100% 100%;
    }
    .eye {
      margin-top: 7px;
      width: 20px;
      height: 20px;
      background: url(../../assets/images/eye.png);
      background-size: 100% 100%;
    }
  }
}
</style>
