<template>
  <div class="login-container">
    <div class="login-weaper animated bounceInDown">
      <!--div class="login-logo">
        <img src="/img/logo.png" alt="">
      </div-->

      <p class="login-tip">{{ website.title}}</p>

      <div class="login-border">
        <div class="login-main">
          <!--h4 class="login-title">
            <el-select v-model="active"
                       class="login-select animated fadeIn"
                       placeholder="点击请选择租户"
                       @change="handleCommand">
              <el-option v-for="tenant in tenantList"
                         :key="tenant.id"
                         :label="tenant.name"
                         :value="tenant.id"></el-option>
            </el-select>
          </h4-->
          <userLogin v-if="activeName==='user'" />
          <codeLogin v-else-if="activeName==='code'" />
          <thirdLogin v-else-if="activeName==='third'" />
          <div class="login-menu">
            <a href="#" @click.stop="activeName='user'">账号密码</a>
            <a href="#" @click.stop="activeName='code'">手机号登录</a>
            <a href="#" @click.stop="activeName='third'">第三方登录</a>
          </div>
        </div>
      </div>
    </div>
    <div class="login-copyright">{{ website.copyright}}</div>
    <top-color v-show="false" />
  </div>
</template>
<script>
import { fetchList } from "@/api/admin/tenant";
import userLogin from "./userlogin";
import codeLogin from "./codelogin";
import thirdLogin from "./thirdlogin";
import { mapGetters } from "vuex";
import { getStore, setStore } from "@/util/store";
import topColor from "@/page/index/top/top-color";

export default {
  name: "Login",
  components: {
    userLogin,
    codeLogin,
    thirdLogin,
    topColor
  },
  data() {
    return {
      tenantList: [],
      active: "",
      activeName: "user",
      socialForm: {}
    };
  },
  watch: {
    $route: {
      handler() {
        const params = this.$route.query;
        if (this.validatenull(params.state) && this.validatenull(params.code))
          return;

        this.socialForm.state = params.state;
        this.socialForm.code = params.code;

        const loading = this.$loading({
          lock: true,
          text: `登录中,请稍后。。。`,
          spinner: "el-icon-loading"
        });
        this.$store
          .dispatch("LoginBySocial", this.socialForm)
          .then(() => {
            loading.close();
            this.$router.push({ path: this.tagWel.value });
          })
          .catch(() => {
            loading.close();
          });
      },
      immediate: true
    }
  },
  created() {
    this.watermark();
    this.getTenantList();
    this.active = getStore({ name: "tenantId" });
  },
  mounted() {},
  computed: {
    ...mapGetters(["website", "tagWel"])
  },
  methods: {
    handleCommand(command) {
      setStore({ name: "tenantId", content: command });
    },
    getTenantList() {
      fetchList().then(response => {
        this.tenantList = response.data.data;
      });
    },
    watermark() {
      const text = "";
      const canvas = document.createElement("canvas");
      canvas.width = "500";
      canvas.height = "200";
      const ctx = canvas.getContext("2d");
      ctx.clearRect(0, 0, 200, 200); // 绘制之前画布清除
      ctx.font = "30px 黑体";
      ctx.rotate((-20 * Math.PI) / 180); // 为了实现水印倾斜效果,旋转画布坐标系
      ctx.fillStyle = "rgba(100,100,100,0.15)"; // 画笔颜色
      ctx.fillText(text, -20, 200); // 书写的内容及位置
      ctx.rotate("20*Math.PI/180"); // 坐标系还原,如果后续没有其他操作,这一步可以省略
      // 将canvas的内容转换为base64编码
      const data = canvas.toDataURL("image/png", 1); // 1表示质量(无损压缩)

      window.onload = () => {
        const background = "url(" + data + ") repeat";
        var watermark = document.createElement("div");
        watermark.style.width = "100%";
        watermark.style.height = "100%";
        watermark.style.position = "fixed";
        watermark.style.left = "0";
        watermark.style.top = "0";
        watermark.style.pointerEvents = "none";
        watermark.style.background = background;
        watermark.style.zIndex = "9999";
        document.body.append(watermark);
      };
    }
  }
};
</script>

<style lang="scss">
@import "@/styles/login.scss";
</style>
