<template>
  <div class="login-container">
    <div class="login-from-box">
      <el-form
        class="login-form"
        autocomplete="on"
        :model="loginForm"
        :rules="loginRules"
        ref="loginForm"
        label-position="left"
      >
        <h3 class="title">后台管理框架</h3>
        <el-form-item prop="username">
          <span class="svg-container svg-container_login">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            name="username"
            type="text"
            v-model="loginForm.username"
            autocomplete="on"
            placeholder="用户名"
          />
        </el-form-item>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password"></svg-icon>
          </span>
          <el-input
            name="password"
            :type="pwdType"
            @keyup.enter.native="handleLogin"
            v-model="loginForm.password"
            autocomplete="on"
            placeholder="密码"
          ></el-input>
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="pwdType ==='password'?'eye':'eye-open'" />
          </span>
        </el-form-item>
        <div class="login-btn">
          <button type="button" class="btn" @click="handleLogin">登录</button>
        </div>
        <div class="tips">
          <span style="margin-right:20px;">用户名: admin</span>
          <span>密码：随便什么都行</span>
        </div>
      </el-form>
    </div>
  </div>
</template>

<script>
import { isvalidUsername } from "@/utils/validate";

export default {
  name: "login",
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!isvalidUsername(value)) {
        callback(new Error("请输入正确的用户名"));
      } else {
        callback();
      }
    };
    const validatePass = (rule, value, callback) => {
      if (value.length < 5) {
        callback(new Error("密码不能小于5位"));
      } else {
        callback();
      }
    };
    return {
      loginForm: {
        username: "admin",
        password: "admin"
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", validator: validateUsername }
        ],
        password: [{ required: true, trigger: "blur", validator: validatePass }]
      },
      loading: false,
      pwdType: "password"
    };
  },
  methods: {
    showPwd() {
      if (this.pwdType === "password") {
        this.pwdType = "";
      } else {
        this.pwdType = "password";
      }
    },
    handleLogin() {
      console.log(11111);
      this.$refs.loginForm.validate(valid => {
        console.log(valid);
        if (valid) {
          this.loading = true;
          this.$store
            .dispatch("Login", this.loginForm)
            .then(() => {
              this.loading = false;
              this.$router.push({ path: "/" });
            })
            .catch(() => {
              this.loading = false;
            });
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
$bg: #2d3a4b;
$light_gray: #eee;
$dark_gray: #889aa4;
$light_gray: #eee;

/* reset element-ui css */
.login-container {
  position: fixed;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  background-image: url("https://i.loli.net/2019/10/18/buDT4YS6zUMfHst.jpg");
  background-position: center;
  ::v-deep .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: $light_gray;
      height: 47px;
      &:-webkit-autofill {
        -webkit-box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: #fff !important;
      }
    }
  }
  ::v-deep .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
  .login-from-box {
    position: relative;
    backdrop-filter: saturate(180%) blur(20px);

    .login-form {
      position: absolute;
      left: 0;
      right: 0;
      width: 520px;
      padding: 35px 35px 15px 35px;
      margin: 120px auto;
      align-items: center;
      color: white;
      background: rgba(0, 0, 0, 0.8);
      border-radius: 10px;
      box-shadow: 0 0.4px 0.6px rgba(0, 0, 0, 0.141),
        0 1px 1.3px rgba(0, 0, 0, 0.202), 0 1.9px 2.5px rgba(0, 0, 0, 0.25),
        0 3.4px 4.5px rgba(0, 0, 0, 0.298), 0 6.3px 8.4px rgba(0, 0, 0, 0.359),
        0 15px 20px rgba(0, 0, 0, 0.5);
      .login-btn {
        .btn {
          position: relative;
          width: 100%;
          padding: 6px 0;
          margin: 10px 0 36px 0;
          font-size: 1.2em;
          color: white;
          background: transparent;
          border: 2px solid hsla(204, 70%, 53%, 1);
          outline: none;
          cursor: pointer;
          overflow: hidden;
          transition: 0.5s;

          &::before {
            position: absolute;
            content: "";
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(
              120deg,
              transparent,
              hsla(204, 70%, 53%, 0.5),
              transparent
            );
            transform: translateX(-100%);
            transition: 0.5s;
          }

          &:hover {
            box-shadow: 0 0 20px 10px hsla(204, 70%, 53%, 0.5);
          }

          &:hover::before {
            transform: translateX(100%);
          }
        }
      }
    }
    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;
      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }
    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
      &_login {
        font-size: 20px;
      }
    }
    .title {
      font-size: 26px;
      font-weight: 400;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
}
</style>