<template>
  <div>
    <loader :loading="loading">
      <!-- 加载页面 -->
      <template slot="loader">
        <div>
          <zombie></zombie>
        </div>
      </template>
      <!-- 内容页面 -->
      <template slot="body">
        <!-- 首页图片 -->
        <el-image style="animation: header-effect 2s"
                  class="background-image"
                  v-once
                  lazy
                  :src="!$common.isEmpty($store.state.webInfo.backgroundImage)?$store.state.webInfo.backgroundImage:$constant.random_image+new Date()+Math.floor(Math.random()*10)"
                  fit="cover">
          <div slot="error" class="image-slot background-image-error"></div>
        </el-image>
        <!-- 首页文字 -->
        <div class="signature-wall myCenter my-animation-hideToShow">
          <h1 class="playful">
            <span v-for="(a, index) in $store.state.webInfo.webTitle" :key="index">{{a}}</span>
          </h1>
          <div class="printer" @click="getGuShi()">
            <printer :printerInfo="printerInfo">
              <template slot="paper" slot-scope="scope">
                <h3>
                  {{ scope.content }}<span class="cursor">|</span>
                </h3>
              </template>
            </printer>
          </div>
          <div id="bannerWave1"></div>
          <div id="bannerWave2"></div>
          <i class="el-icon-arrow-down" @click="navigation('.page-container-wrap')"></i>
        </div>
        <!-- 首页内容 -->
        <div class="page-container-wrap">
          <div class="page-container">
            <div class="aside-content" v-if="showAside">
              <myAside></myAside>
            </div>
            <div class="recent-posts">
              <div class="announcement background-opacity">
                <i class="fa fa-volume-up" aria-hidden="true"></i>
                <div>
                  <div v-for="(notice, index) in $store.state.webInfo.notices" :key="index">
                    {{ notice }}
                  </div>
                </div>
              </div>
              <articleList :articleList="articles"></articleList>
              <div class="pagination-wrap">
                <div @click="pageArticles()" class="pagination" v-if="pagination.total !== articles.length">
                  下一页
                </div>
                <div v-else style="user-select: none">
                  ~~到底啦~~
                </div>
              </div>
            </div>
          </div>
        </div>
        <!-- 页脚 -->
        <div style="background: var(--background)">
          <myFooter></myFooter>
        </div>
      </template>
    </loader>
  </div>
</template>
<script>
  const loader = () => import( "./common/loader");
  const zombie = () => import( "./common/zombie");
  const printer = () => import( "./common/printer");
  const articleList = () => import( "./articleList");
  const myFooter = () => import( "./common/myFooter");
  const myAside = () => import( "./myAside");

  export default {
    components: {
      loader,
      zombie,
      printer,
      articleList,
      myFooter,
      myAside
    },

    data() {
      return {
        loading: false,
        showAside: true,
        printerInfo: "你看对面的青山多漂亮",
        pagination: {
          current: 1,
          size: 10,
          total: 0,
          searchKey: ""
        },
        guShi: {
          "content": "",
          "origin": "",
          "author": "",
          "category": ""
        },
        articles: []
      };
    },

    watch: {},

    created() {
      this.getGuShi();
      this.getArticles();
    },

    mounted() {
    },

    methods: {
      pageArticles() {
        this.pagination.current = this.pagination.current + 1;
        this.getArticles();
      },

      getArticles() {
        this.$http.post(this.$constant.baseURL + "/article/listArticle", this.pagination)
          .then((res) => {
            if (!this.$common.isEmpty(res.data)) {
              this.articles = this.articles.concat(res.data.records);
              this.pagination.total = res.data.total;
            }
          })
          .catch((error) => {
            this.$message({
              message: error.message,
              type: "error"
            });
          });
      },
      navigation(selector) {
        let pageId = document.querySelector(selector);
        window.scrollTo({
          top: pageId.offsetTop,
          behavior: "smooth"
        });
      },
      getGuShi() {
        let that = this;
        let xhr = new XMLHttpRequest();
        xhr.open('get', this.$constant.jinrishici);
        xhr.onreadystatechange = function () {
          if (xhr.readyState === 4) {
            that.guShi = JSON.parse(xhr.responseText);
            that.printerInfo = that.guShi.content;
          }
        };
        xhr.send();
      }
    }
  }
</script>

<style scoped>

  .signature-wall {
    /* 向下排列 */
    display: flex;
    flex-direction: column;
    position: relative;
    user-select: none;
    height: 100vh;
    overflow: hidden;
  }

  .playful {
    color: var(--white);
    font-size: 40px;
  }

  /*.playful span {*/
  /*  position: relative;*/
  /*  color: #5362f6;*/
  /*  text-shadow: 0.25px 0.25px #e485f8, 0.5px 0.5px #e485f8, 0.75px 0.75px #e485f8,*/
  /*  1px 1px #e485f8, 1.25px 1.25px #e485f8, 1.5px 1.5px #e485f8, 1.75px 1.75px #e485f8,*/
  /*  2px 2px #e485f8, 2.25px 2.25px #e485f8, 2.5px 2.5px #e485f8, 2.75px 2.75px #e485f8,*/
  /*  3px 3px #e485f8, 3.25px 3.25px #e485f8, 3.5px 3.5px #e485f8, 3.75px 3.75px #e485f8,*/
  /*  4px 4px #e485f8, 4.25px 4.25px #e485f8, 4.5px 4.5px #e485f8, 4.75px 4.75px #e485f8,*/
  /*  5px 5px #e485f8, 5.25px 5.25px #e485f8, 5.5px 5.5px #e485f8, 5.75px 5.75px #e485f8,*/
  /*  6px 6px #e485f8;*/
  /*  animation: scatter 1.75s infinite;*/
  /*  font-weight: normal;*/
  /*}*/

  /*.playful span:nth-child(2n) {*/
  /*  color: #ed625c;*/
  /*  text-shadow: 0.25px 0.25px #f2a063, 0.5px 0.5px #f2a063, 0.75px 0.75px #f2a063,*/
  /*  1px 1px #f2a063, 1.25px 1.25px #f2a063, 1.5px 1.5px #f2a063, 1.75px 1.75px #f2a063,*/
  /*  2px 2px #f2a063, 2.25px 2.25px #f2a063, 2.5px 2.5px #f2a063, 2.75px 2.75px #f2a063,*/
  /*  3px 3px #f2a063, 3.25px 3.25px #f2a063, 3.5px 3.5px #f2a063, 3.75px 3.75px #f2a063,*/
  /*  4px 4px #f2a063, 4.25px 4.25px #f2a063, 4.5px 4.5px #f2a063, 4.75px 4.75px #f2a063,*/
  /*  5px 5px #f2a063, 5.25px 5.25px #f2a063, 5.5px 5.5px #f2a063, 5.75px 5.75px #f2a063,*/
  /*  6px 6px #f2a063;*/
  /*  animation-delay: 0.3s;*/
  /*}*/

  /*.playful span:nth-child(3n) {*/
  /*  color: #ffd913;*/
  /*  text-shadow: 0.25px 0.25px #6ec0a9, 0.5px 0.5px #6ec0a9, 0.75px 0.75px #6ec0a9,*/
  /*  1px 1px #6ec0a9, 1.25px 1.25px #6ec0a9, 1.5px 1.5px #6ec0a9, 1.75px 1.75px #6ec0a9,*/
  /*  2px 2px #6ec0a9, 2.25px 2.25px #6ec0a9, 2.5px 2.5px #6ec0a9, 2.75px 2.75px #6ec0a9,*/
  /*  3px 3px #6ec0a9, 3.25px 3.25px #6ec0a9, 3.5px 3.5px #6ec0a9, 3.75px 3.75px #6ec0a9,*/
  /*  4px 4px #6ec0a9, 4.25px 4.25px #6ec0a9, 4.5px 4.5px #6ec0a9, 4.75px 4.75px #6ec0a9,*/
  /*  5px 5px #6ec0a9, 5.25px 5.25px #6ec0a9, 5.5px 5.5px #6ec0a9, 5.75px 5.75px #6ec0a9,*/
  /*  6px 6px #6ec0a9;*/
  /*  animation-delay: 0.15s;*/
  /*}*/

  /*.playful span:nth-child(5n) {*/
  /*  color: #555bff;*/
  /*  text-shadow: 0.25px 0.25px #e485f8, 0.5px 0.5px #e485f8, 0.75px 0.75px #e485f8,*/
  /*  1px 1px #e485f8, 1.25px 1.25px #e485f8, 1.5px 1.5px #e485f8, 1.75px 1.75px #e485f8,*/
  /*  2px 2px #e485f8, 2.25px 2.25px #e485f8, 2.5px 2.5px #e485f8, 2.75px 2.75px #e485f8,*/
  /*  3px 3px #e485f8, 3.25px 3.25px #e485f8, 3.5px 3.5px #e485f8, 3.75px 3.75px #e485f8,*/
  /*  4px 4px #e485f8, 4.25px 4.25px #e485f8, 4.5px 4.5px #e485f8, 4.75px 4.75px #e485f8,*/
  /*  5px 5px #e485f8, 5.25px 5.25px #e485f8, 5.5px 5.5px #e485f8, 5.75px 5.75px #e485f8,*/
  /*  6px 6px #e485f8;*/
  /*  animation-delay: 0.4s;*/
  /*}*/

  /*.playful span:nth-child(7n) {*/
  /*  color: #ff9c55;*/
  /*  text-shadow: 0.25px 0.25px #ff5555, 0.5px 0.5px #ff5555, 0.75px 0.75px #ff5555,*/
  /*  1px 1px #ff5555, 1.25px 1.25px #ff5555, 1.5px 1.5px #ff5555, 1.75px 1.75px #ff5555,*/
  /*  2px 2px #ff5555, 2.25px 2.25px #ff5555, 2.5px 2.5px #ff5555, 2.75px 2.75px #ff5555,*/
  /*  3px 3px #ff5555, 3.25px 3.25px #ff5555, 3.5px 3.5px #ff5555, 3.75px 3.75px #ff5555,*/
  /*  4px 4px #ff5555, 4.25px 4.25px #ff5555, 4.5px 4.5px #ff5555, 4.75px 4.75px #ff5555,*/
  /*  5px 5px #ff5555, 5.25px 5.25px #ff5555, 5.5px 5.5px #ff5555, 5.75px 5.75px #ff5555,*/
  /*  6px 6px #ff5555;*/
  /*  animation-delay: 0.25s;*/
  /*}*/

  .printer {
    cursor: pointer;
    color: var(--white);
    background: var(--translucent);
    border-radius: 10px;
    padding-left: 10px;
    padding-right: 10px;
  }

  #bannerWave1 {
    height: 84px;
    background: var(--bannerWave1);
    position: absolute;
    width: 200%;
    bottom: 0;
    z-index: 10;
    animation: gradientBG 120s linear infinite;
  }

  #bannerWave2 {
    height: 100px;
    background: var(--bannerWave2);
    position: absolute;
    width: 400%;
    bottom: 0;
    z-index: 5;
    animation: gradientBG 120s linear infinite;
  }

  /* 光标 */
  .cursor {
    margin-left: 1px;
    animation: hideToShow 0.7s infinite;
    font-weight: 200;
  }

  .el-icon-arrow-down {
    font-size: 40px;
    font-weight: bold;
    color: var(--white);
    position: absolute;
    bottom: 60px;
    animation: my-shake 1.5s ease-out infinite;
    z-index: 15;
    cursor: pointer;
  }

  .page-container-wrap {
    background: var(--background);
    position: relative;
  }

  .page-container {
    display: flex;
    justify-content: center;
    width: 90%;
    padding: 0 20px 40px 20px;
    margin: 0 auto;
    flex-direction: row;
  }

  .recent-posts {
    width: 70%;
  }

  .announcement {
    padding: 22px;
    border: 1px dashed var(--lightGray);
    color: var(--greyFont);
    border-radius: 10px;
    display: flex;
    max-width: 780px;
    margin: 40px auto 40px;
  }

  .announcement i {
    color: var(--themeBackground);
    font-size: 22px;
    margin: auto 0;
    animation: scale 0.8s ease-in-out infinite;
  }

  .announcement div div {
    margin-left: 20px;
    line-height: 30px;
  }

  .aside-content {
    width: calc(30% - 40px);
    user-select: none;
    margin-top: 40px;
    margin-right: 40px;
    max-width: 300px;
    float: right;
  }

  .pagination-wrap {
    display: flex;
    justify-content: center;
    margin-top: 40px;
  }

  .pagination {
    padding: 13px 15px;
    border: 1px solid var(--lightGray);
    border-radius: 3rem;
    color: var(--greyFont);
    width: 100px;
    user-select: none;
    cursor: pointer;
    text-align: center;
  }

  .pagination:hover {
    border: 1px solid var(--themeBackground);
    color: var(--themeBackground);
    box-shadow: 0 0 5px var(--themeBackground);
  }

  @media screen and (max-width: 1100px) {
    .recent-posts {
      width: 100%;
    }

    .page-container {
      width: 100%;
    }
  }

  @media screen and (max-width: 1000px) {

    .page-container {
      /* 文章栏与侧标栏垂直排列 */
      flex-direction: column;
    }

    .aside-content {
      width: 100%;
      max-width: unset;
      float: unset;
      margin: 40px auto 0;
    }
  }

  @media screen and (max-width: 768px) {

    h1 {
      font-size: 35px;
    }
  }
</style>
