<template>
  <div class="app-quick-group">
    <div class="app-quick-item" v-for="item in showItems" :key="item.id" @click="handleClick(item)">
      <span
        v-if="!item.children"
        :style="{color:item.color}"
        :class="{'app-seleted-item':isSelectedItem(item)}"
      >
        <i v-if=" item.iconcls && !Object.is(item.iconcls, '')" :class="item.iconcls"></i>
        <img v-else-if="item.icon && !Object.is(item.icon, '')" :src="item.icon" />
        <span class="app-quick-item-label">{{item.label}}</span>
        <span
          v-show="isSelectedItem(item) && counterService && counterService.counterData && counterService.counterData[item.codename]"
          class="app-quick-item-counter"
        >{{itemTag(item)}}</span>
      </span>
      <el-dropdown
        v-if="item.children"
        class="app-quick-item-dropdown"
        trigger="click"
        @command="handleCommand($event,item)"
      >
        <span :style="{color:item.color}" :class="{'app-seleted-item':isSelectedItem(item)}">
          <i v-if=" item.iconcls && !Object.is(item.iconcls, '')" :class="item.iconcls"></i>
          <img v-else-if="item.icon && !Object.is(item.icon, '')" :src="item.icon" />
          <span class="app-quick-item-label">{{item.label}}</span>
          <span
            v-show="isSelectedItem(item) && counterService && counterService.counterData && counterService.counterData[item.codename]"
            class="app-quick-item-counter"
          >{{itemTag(item)}}</span>
        </span>
        <el-dropdown-menu slot="dropdown">
          <el-dropdown-item
            v-for="childitem in item.children"
            :command="childitem"
            :key="childitem.id"
            :class="{ 'is-select': Object.is(selectedUiItem.codename, childitem.codename) }"
          >
            <span :style="{color:childitem.color}">
              <i
                v-if=" childitem.iconcls && !Object.is(childitem.iconcls, '')"
                :class="childitem.iconcls"
              ></i>
              <img
                v-else-if="childitem.icon && !Object.is(childitem.icon, '')"
                :src="childitem.icon"
              />
              <span
                :style="{color:(childitem.label == item.label)?'#0c64eb':''}"
              >{{childitem.label}}</span>
            </span>
          </el-dropdown-item>
        </el-dropdown-menu>
      </el-dropdown>
    </div>
  </div>
</template>

<script lang="ts">
import {
  Vue,
  Component,
  Prop,
  Model,
  Emit,
  Watch
} from "vue-property-decorator";

@Component({})
export default class AppQuickGroup extends Vue {
  /**
   * 传入渲染项
   *
   * @type {Array<any>}
   * @memberof AppQuickGroup
   */
  @Prop({ default: () => [] })
  public items!: Array<any>;

  /**
   * 渲染列表
   *
   * @type {any[]}
   * @memberof AppQuickGroup
   */
  public showItems: any[] = [];

  /**
   * 监控代码表变化
   *
   * @memberof AppQuickGroup
   */
  @Watch("items")
  public itemsWatch(): void {
    if (this.items) {
      this.items.every((item: any) => {
        if (item.default) {
          this.handleClick(item, true);
        }
        return !item.default;
      });
      this.showItems = this.handleDataSet(this.items);
    }
  }

  /**
   * 计数器服务名
   *
   * @type {string}
   * @memberof AppQuickGroup
   */
  @Prop()
  public counterService?: any;

  /**
   * UI选中项
   *
   * @type {*}
   * @memberof AppQuickGroup
   */
  public selectedUiItem: any = {};

  /**
   * 获取计数器标识
   *
   * @param item 传入当前项
   * @memberof AppQuickGroup
   */
  public itemTag(item: any): string {
    if (
      this.counterService &&
      this.counterService.counterData &&
      item.codename
    ) {
      return this.counterService.counterData[item.codename];
    } else {
      return "";
    }
  }

  /**
   * 是否选中当前项
   *
   * @param item 传入当前项
   * @memberof AppQuickGroup
   */
  public isSelectedItem(item: any): boolean {
    if (this.selectedUiItem && this.selectedUiItem.id === item.id) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 处理代码表返回数据(树状结构)
   *
   * @param result 返回数组
   * @memberof AppQuickGroup
   */
  public handleDataSet(result: Array<any>): any[] {
    let list: Array<any> = [];
    if (result.length === 0) {
      return list;
    }
    result.forEach((codeItem: any) => {
      if (!codeItem.pvalue) {
        let valueField: string = codeItem.value;
        this.setChildCodeItems(valueField, result, codeItem);
        list.push(codeItem);
      }
    });
    return list;
  }

  /**
   * 处理非根节点数据
   *
   * @param pValue 父值
   * @param result 返回数组
   * @param codeItem 代码项
   * @memberof AppQuickGroup
   */
  public setChildCodeItems(
    pValue: string,
    result: Array<any>,
    codeItem: any
  ): void {
    result.forEach((item: any) => {
      if (item.pvalue == pValue) {
        let valueField: string = item.value;
        this.setChildCodeItems(valueField, result, item);
        if (!codeItem.children) {
          codeItem.children = [];
        }
        codeItem.children.push(item);
      }
    });
  }

  /**
   * 处理点击事件
   *
   * @param $event 值
   * @param isswitch 是否切换UI选中项
   * @memberof AppQuickGroup
   */
  public handleClick($event: any, isswitch: boolean = true): void {
    if (isswitch) {
      this.selectedUiItem = $event;
    }
    this.$emit("valuechange", $event);
    this.$forceUpdate();
  }

  /**
   * 处理子项点击事件
   *
   * @param $event 值
   * @param item 父值
   * @memberof AppQuickGroup
   */
  public handleCommand($event: any, item: any): void {
    item.label = $event.label;
    item.codename = $event.codename;
    this.handleClick($event, false);
  }
}
</script>

<style lang='less'>
@import "./app-quick-group.less";
</style>