<template>
  <el-card style="height: 100%; overflow-y: auto;">
    <div slot="header" style="text-align: center;">
      <b>{{ $t('lesson.courseName') + ':  '+ name }}</b>
    </div>
    <div style="display: flex;align-items:flex-start">
      <div class="tree_box">
        <div style="border: 2px dashed #B0C4DE">
          <p>{{ this.$t('lesson.courseTree') }}</p>
          <el-scrollbar wrap-class="scrollbar-wrapper" :style="{ height: (height-80) +'px' }">
            <el-tree
              ref="tree"
              style="width: 370px"
              :data="treeList"
              node-key="id"
              :props="defaultProps"
              default-expand-all
              highlight-current
              :span="22"
              :filter-node-method="filterNode"
              :default-expanded-keys="expandList"
              @node-contextmenu="showContextMenu"
              @node-click="clickEvent"
            />
          </el-scrollbar>
        </div>
      </div>
      <transition>
        <router-view @refresh="refresh" />
      </transition>
    </div>
    <operate-menu ref="menu" :point="point" :node="node" @refresh="refresh" @changeRouter="changeRouter" />
  </el-card>
</template>

<script>
import { getLessonTree } from '@/api/jmap/lessondraft';
import { DeviceMenu } from '@/scripts/ConstDic';
import OperateMenu from './operateMenu';
export default {
    name: 'LessonDetail',
    components: {
        OperateMenu
    },
    data() {
        return {
            treeList: [],
            defaultProps: {
                children: 'children',
                label: 'name'
            },
            name: '',
            lessonId: '',
            expandList: [],
            point: {
                x: 0,
                y: 0
            },
            node: {
            }
        };
    },
    computed: {
        width() {
            return this.$store.state.app.width - 481 - this.widthLeft;
        },
        height() {
            return this.$store.state.app.height - 120;
        }
    },
    mounted() {
        this.initPageData();
    },
    methods: {
        initPageData() {
            getLessonTree(this.$route.query.lessonId || this.$route.query.id).then(resp => {
                if (resp.data && resp.data[0]) {
                    this.name = resp.data[0].name;
                    this.lessonId = resp.data[0].id;
                    this.treeList = resp.data;
                }
                this.editLesson();
            });

        },
        clickEvent(obj, node, ele) {
        },
        filterNode(value, data) {
            if (!value) return true;
            return data.name.indexOf(value) !== -1;
        },
        editLesson() {
            this.$router.push( {path: `/design/lesson/details/edit/lessonEdit`, query: {id: this.lessonId, skinCode: this.$route.query.skinCode, cityCode: this.$route.query.cityCode, mapId: this.$route.query.mapId}} );
        },
        createChapte(node) {
            this.$router.push({path: `/design/lesson/details/edit/chapterCreate`, query: {id: node.data.id, lessonId: this.lessonId, skinCode: this.$route.query.skinCode, cityCode: this.$route.query.cityCode, mapId: this.$route.query.mapId}});
        },
        updateChapte(node) {
            this.$router.push( {path: `/design/lesson/details/edit/chapterEdit`, query: {id: node.data.id, skinCode: this.$route.query.skinCode, lessonId: this.lessonId, cityCode: this.$route.query.cityCode, mapId: this.$route.query.mapId}});
        },
        showContextMenu(e, obj, node, vueElem) {
            if (obj && obj.type === 'Lesson' || obj.type === 'Chapter') {
                e.preventDefault();
                this.point = {
                    x: e.clientX,
                    y: e.clientY
                };
                this.node = node;
                const menu = DeviceMenu.Lesson;
                this.$store.dispatch('menuOperation/setPopMenu', { position: this.point, menu: menu });
            }
        },
        changeRouter(params) {
            switch (params.event) {
            case '01':
                this.editLesson();
                break;
            case '02':
                this.createChapte(params.node);
                break;
            case '03':
                this.updateChapte(params.node);
                break;
            case '04':
                this.createChapte(params.node);
                break;
            }
        },
        refresh() {
            this.initPageData();
        }
    }
};
</script>
<style rel="stylesheet/scss" lang="scss" scoped>
    @import "src/styles/mixin.scss";

    .tree_box{
        position: relative;
        left: 10px;
        width: 400px;
        padding-right: 20px;
        padding-top: 20px;
    }
    .right_box{
    }
</style>
