template>
  <client-only>
    <el-row class="wrapper" v-if="user">
      <el-col>
        <div id="contentEditor"></div>
      </el-col>
      <el-col style="margin-top: 1rem;padding-right:3rem;text-align: right;">
        <el-button type="primary" :loading="loading" @click="send" plain>发送</el-button>
      </el-col>
      <el-col style="margin-top: 2rem;" id="messagesContent">
        <el-col v-for="message in Array.prototype.reverse.call(messages)" :key="message.dataId">
          <el-col v-if="message.from === user.nickname">
            <el-col :span="22" style="text-align: right;">
              <div class="from-message">
                <div v-html="message.content"></div>
              </div>
            </el-col>
            <el-col :span="2" style="text-align: right;">
              <el-avatar :src="user.avatarURL"></el-avatar>
            </el-col>
          </el-col>
          <el-col v-else>
            <el-col :span="2">
              <el-avatar :src="to.avatarURL"></el-avatar>
            </el-col>
            <el-col :span="22" style="text-align: left;">
              <div class="to-message">
                <div v-html="message.content"></div>
              </div>
            </el-col>
          </el-col>
        </el-col>
      </el-col>
    </el-row>
  </client-only>
</template>

<script>
  import Vue from 'vue';
  import {mapState} from 'vuex';
  import socket from '~/plugins/socket.io.js';

  export default {
    name: "Chat",
    asyncData() {
      return new Promise(resolve =>
        socket.emit('last-messages', messages => resolve({messages}))
      )
    },
    computed: {
      ...mapState({
        user: state => state.userInfo
      })
    },
    data() {
      return {
        contentEditor: null,
        tokenURL: {
          URL: '',
          linkToImageURL: '',
          token: ''
        },
        drawer: false,
        direction: 'btt',
        initEditor: false,
        isShow: true,
        loading: false,
        to: {}
      }
    },
    watch: {
      messages(value) {
        console.log(value);
      }
    },
    beforeMount() {
      socket.on('new-message', (message) => {
        this.messages.push(message)
      })
    },
    methods: {
      _initEditor(data) {
        let _ts = this;

        let toolbar = [
          'emoji',
          'headings',
          'bold',
          'italic',
          'strike',
          'link',
          '|',
          'list',
          'ordered-list',
          'check',
          'outdent',
          'indent',
          '|',
          'quote',
          'line',
          'code',
          'inline-code',
          'insert-before',
          'insert-after',
          '|',
          'upload',
          // 'record',
          'table',
          '|',
          'undo',
          'redo',
          '|',
          'edit-mode',
          {
            name: 'more',
            toolbar: [
              'fullscreen',
              'both',
              'preview',
              'info'
            ],
          }]
        return new Vue.Vditor(data.id, {
          toolbar,
          mode: 'sv',
          tab: '\t',
          cache: {
            enable: this.postId ? false : true,
            id: this.postId ? this.postId : '',
          },
          after() {
            _ts.contentEditor.setValue(data.value ? data.value : '');
          },
          preview: {
            markdown: {
              toc: true,
            },
            delay: 500,
            mode: data.mode,
            /*url: `${process.env.Server}/api/console/markdown`,*/
            parse: (element) => {
              if (element.style.display === 'none') {
                return
              }
              // LazyLoadImage();
              // Vue.Vditor.highlightRender({style:'github'}, element, document);
            }
          },
          upload: {
            max: 10 * 1024 * 1024,
            url: this.tokenURL.URL,
            linkToImgUrl: this.tokenURL.linkToImageURL,
            token: this.tokenURL.token,
            filename: name => name.replace(/[^(a-zA-Z0-9\u4e00-\u9fa5\.)]/g, '').
            replace(/[\?\\/:|<>\*\[\]\(\)\$%\{\}@~]/g, '').
            replace('/\\s/g', '')
          },
          height: data.height,
          counter: 102400,
          resize: {
            enable: data.resize,
          },
          lang: this.$store.state.locale,
          placeholder: data.placeholder,
        })
      },
      async send() {
        let _ts = this;
        const message = {
          to: _ts.to.nickname,
          from: _ts.user.nickname,
          dataType: 1,
          dataId: new Date().getTime(),
          content: await _ts.contentEditor.getHTML()
        }
        _ts.messages.push(message);
        _ts.contentEditor.setValue('')
        socket.emit('all', message);
      }
    },
    async mounted() {
      let _ts = this;
      _ts.$store.commit('setActiveMenu', 'post-article');

      let to = {
        nickname: _ts.$route.params?.nickname
      }

      _ts.$set(_ts, 'to', to);

      if (_ts.user) {
        const responseData = await _ts.$axios.$get('/api/upload/token');
        if (responseData) {
          _ts.$set(_ts, 'tokenURL', {
            token: responseData.uploadToken || '',
            URL: responseData.uploadURL || '',
            linkToImageURL: responseData.linkToImageURL || ''
          })
        }
      }

      if (!_ts.initEditor) {
        _ts.$set(_ts, 'initEditor', true);
        setTimeout(function () {
          _ts.contentEditor = _ts._initEditor({
            id: 'contentEditor',
            mode: 'both',
            height: 200,
            placeholder: '', //this.$t('inputContent', this.$store.state.locale)
            resize: false,
            value: ''
          });
        }, 500);
      }
    }
  }
</script>

<style lang="scss">
  @import "~vditor/src/assets/scss/index.scss";

  .from-message {
    float: right;
    width: auto;
    min-height: 40px;
    margin: 10px;
    background-color: skyblue;
    border-bottom-color: skyblue;
    /*为了给after伪元素自动继承*/
    color: #fff;
    font-size: 12px;
    line-height: 18px;
    padding: 5px 12px 5px 12px;
    box-sizing: border-box;
    border-radius: 6px;
    position: relative;
    word-break: break-all;
  }

  .to-message {
    float: left;
    width: auto;
    min-height: 40px;
    margin: 10px;
    background-color: skyblue;
    border-bottom-color: skyblue;
    /*为了给after伪元素自动继承*/
    color: #fff;
    font-size: 12px;
    line-height: 18px;
    padding: 5px 12px 5px 12px;
    box-sizing: border-box;
    border-radius: 6px;
    position: relative;
    word-break: break-all;
  }

  .from-message::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -5px;
    width: 10px;
    height: 10px;
    margin-top: -5px;
    background: inherit;
    /*自动继承父元素的背景*/
    transform: rotate(45deg);
  }

  /** 通过对小正方形旋转45度解决 **/
  .to-message::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -5px;
    width: 10px;
    height: 10px;
    margin-top: -5px;
    background: inherit;
    /*自动继承父元素的背景*/
    transform: rotate(45deg);
  }
</style>