<template>
  <div class="form-edit-container">
    <div class="left-board">
      <el-scrollbar class="left-scrollbar">
        <div class="components-list">
          <div v-for="(item, listIndex) in leftComponents"
               :key="listIndex">
            <div class="components-title">
              <svg-icon name="component" />
              {{ item.title }}
            </div>
            <draggable :clone="cloneComponent"
                       :group="{ name: 'componentsGroup', pull: 'clone', put: false }"
                       :list="item.list"
                       :sort="false"
                       class="components-draggable"
                       draggable=".components-item"
                       @end="onEnd">
              <div v-for="(element, index) in item.list"
                   :key="index"
                   class="components-item"
                   @click="addComponent(element)">
                <div class="components-body">
                  <svg-icon :name="element.__config__.tagIcon" />
                  {{ element.__config__.label }}
                </div>
              </div>
            </draggable>
          </div>
        </div>
      </el-scrollbar>
    </div>
    <div class="center-board">
      <el-scrollbar class="center-scrollbar">
        <el-row v-if="formConf"
                :gutter="formConf.gutter"
                class="center-board-row">
          <el-row align="middle"
                  justify="center"
                  type="flex">
            <el-col class="form-head-title">
              <h4 class="form-name-text"
                  contenteditable="true"
                  @blur="(event)=>{
                                    this.formConf.title=event.target.innerText;
                                    this.saveProjectInfo()}">
                {{ formConf.title }}
              </h4>
            </el-col>
          </el-row>
          <el-row align="middle"
                  justify="center"
                  type="flex">
            <el-col class="form-head-desc">
              <Tinymce v-if="editDescription"
                       v-model="formConf.description"
                       placeholder="请输入表单描述"
                       @blur="editDescription=false"
                       @input="saveProjectInfo" />
              <div v-else
                   class="form-name-text"
                   @click="editDescription=true"
                   v-html="formConf.description" />
              <!--                            <p class="form-name-text" contenteditable="true"-->
              <!--                               @blur="(event)=>{-->
              <!--                                   formConf.description=event.target.innerText;-->
              <!--                                   this.saveProjectInfo()}">-->
              <!--                                {{ formConf.description }}-->
              <!--                            </p>-->
            </el-col>
          </el-row>
          <el-divider class="form-head-divider" />
          <el-form :disabled="formConf.disabled"
                   :label-position="formConf.labelPosition"
                   :label-width="formConf.labelWidth + 'px'"
                   :size="formConf.size">
            <draggable :animation="340"
                       :list="drawingList"
                       class="drawing-board"
                       group="componentsGroup"
                       @end="onItemEnd">
              <draggable-item v-for="(item, index) in drawingList"
                              :key="item.renderKey"
                              :active-id="activeId"
                              :current-item="item"
                              :drawing-list="drawingList"
                              :form-conf="formConf"
                              :index="index"
                              @activeItem="activeFormItem"
                              @changeLabel="changeLabel"
                              @copyItem="drawingItemCopy"
                              @deleteItem="drawingItemDelete" />
            </draggable>
            <div v-show="!drawingList.length"
                 class="empty-info">
              <img style="width: 20%"
                   src="@/assets/images/form-bg.png">
              <p>从左侧拖入或点选组件进行表单设计</p>
            </div>
          </el-form>
        </el-row>
      </el-scrollbar>
    </div>
    <right-panel v-if="activeData"
                 :active-data="activeData"
                 :form-conf="formConf"
                 :show-field="!!drawingList.length"
                 @tag-change="tagChange"
                 @data-change="updateProjectItemInfo" />
  </div>
</template>

<script>
import draggable from 'vuedraggable'
import { debounce } from 'throttle-debounce'
import RightPanel from './RightPanel'

import {
  assistComponents,
  formConf,
  imageComponents,
  inputComponents,
  personalInfoComponents,
  selectComponents
} from '@/components/generator/config'
import { deepClone } from '@/utils'
import { dbDataConvertForItemJson, formItemConvertData } from '@/utils/convert'
import drawingDefalut from '@/components/generator/drawingDefalut'
import DraggableItem from './DraggableItem'
import { saveDrawingList, saveIdGlobal } from '@/utils/db'

let oldActiveId
let tempActiveData
let idGlobal

export default {
  components: {
    draggable,
    RightPanel,
    DraggableItem
  },
  data () {
    return {
      idGlobal,
      formConf: null,
      editDescription: true,
      inputComponents,
      selectComponents,
      labelWidth: 100,
      drawingList: drawingDefalut,
      drawingData: {},
      activeId: drawingDefalut.length != 0 ? drawingDefalut[0].formId : 0,
      formData: {},
      dialogVisible: false,
      generateConf: null,
      showFileName: false,
      activeData: drawingDefalut ? drawingDefalut[0] : null,
      saveDrawingListDebounce: debounce(340, saveDrawingList),
      saveIdGlobalDebounce: debounce(340, saveIdGlobal),
      projectKey: null,
      leftComponents: [
        {
          title: '联系人组件',
          list: personalInfoComponents
        },
        {
          title: '输入型组件',
          list: inputComponents
        },
        {
          title: '图片型组件',
          list: imageComponents
        },
        {
          title: '辅助型组件',
          list: assistComponents
        },
        {
          title: '选择型组件',
          list: selectComponents
        }
      ]
    }
  },
  computed: {},
  watch: {
    // eslint-disable-next-line func-names
    'activeData.__config__.label': function (val, oldVal) {
      if (
        this.activeData.placeholder === undefined
        || !this.activeData.__config__.tag
        || oldActiveId !== this.activeId
      ) {
        return
      }
      this.activeData.placeholder = this.activeData.placeholder.replace(oldVal, '') + val
    },
    activeId: {
      handler (val) {
        oldActiveId = val
      },
      immediate: true
    },
    drawingList: {
      handler (val) {
        this.saveDrawingListDebounce(val, this.projectKey)
        if (val.length === 0) this.idGlobal = 100
      },
      deep: true
    },
    idGlobal: {
      handler (val) {
        if (val) {
          this.saveIdGlobalDebounce(val, this.projectKey)
        }
      },
      immediate: true
    }
  },
  mounted () {

    // 复制对象 避免修改改变原始对象
    this.formConf = JSON.parse(JSON.stringify(formConf))
    // 项目key
    this.projectKey = this.$route.query.key
    console.log('编辑')
    console.log(this.projectKey)
    // 从服务端获取
    this.queryProjectItems()
    // 获取表单配置
    this.$api.get(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/${this.projectKey}`).then(res => {
      this.formConf.title = res.data.name
      this.formConf.description = res.data.describe
    })
    // 全局组件Id
    this.$api.get(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/item/max-form-id`, { params: { key: this.projectKey } }).then(res => {
      this.idGlobal = res.data ? res.data : 100
    })
  },
  methods: {
    saveProjectInfo: debounce(430, true, function () {
      this.$api.post(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/update`, {
        'key': this.projectKey,
        'name': this.formConf.title,
        'describe': this.formConf.description
      }).then(() => {

      })
    }),
    updateProjectItemInfo (val) {
      let data = formItemConvertData(val, this.projectKey)
      this.$api.post(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/item/update`, data).then(() => {

      })
    },
    deleteProjectItemInfo (val) {
      let data = formItemConvertData(val, this.projectKey)
      this.$api.post(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/item/delete`, data).then(() => {

      })
    },
    async saveProjectItemInfo (item) {
      let isSuccess = false
      let params = formItemConvertData(item, this.projectKey)
      console.log(params)
      let pItem = item
      await this.$api.post(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/item/create`, params).then(res => {
        pItem.sort = res.data.sort
        isSuccess = true
      })
      // 如果是分页组件 刷新所有分页的页码
      if (item.typeId === 'PAGINATION') {
        this.updatePaginationList()
      }
      return isSuccess
    },
    updatePaginationList () {
      // 页总数
      const length = this.drawingList.filter(item => item.typeId === 'PAGINATION').length
      let curr = 1
      this.drawingList.forEach((item, index) => {
        if (item.typeId === 'PAGINATION') {
          item.totalPageNum = length
          item.currPageNum = curr++
          this.$set(this.drawingList, index, item)
        }
      })
    },
    queryProjectItems () {
      this.$api.get(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/item/list`, { params: { key: this.projectKey } }).then(res => {
        this.drawingList = res.data.map(item => dbDataConvertForItemJson(item))
        // 更新分页
        this.updatePaginationList()
      })
    },
    activeFormItem (currentItem) {
      this.activeData = currentItem
      this.activeId = currentItem.__config__.formId
    },
    changeLabel (currentItem, value) {
      console.log(currentItem)
      console.log(value)
    },
    onEnd (obj) {
      if (obj.from !== obj.to) {
        this.activeData = tempActiveData
        this.activeId = this.idGlobal
        this.saveProjectItemInfo(tempActiveData).then(() => {
          this.onItemEnd(obj)
        })
      }
    },
    onItemEnd (obj) {
      let params = { 'projectKey': this.projectKey }
      if (this.drawingList[obj.newIndex - 1]) {
        let sort1 = this.drawingList[obj.newIndex - 1].sort
        params.beforePosition = sort1
      }
      if (this.drawingList[obj.newIndex + 1]) {
        let sort2 = this.drawingList[obj.newIndex + 1].sort
        params.afterPosition = sort2
      }
      params.formItemId = this.drawingList[obj.newIndex].__config__.formId
      if (params.beforePosition || params.afterPosition) {
        this.$api.post(`${process.env.VUE_APP_API_ROOT_TDUCK}/user/project/item/sort`, params).then(res => {
          this.drawingList[obj.newIndex].sort = res.data.sort
        })
      }
    },
    addComponent (item) {
      const clone = this.cloneComponent(item)
      this.saveProjectItemInfo(clone)
      this.drawingList.push(clone)
      this.activeFormItem(clone)
    },
    cloneComponent (origin) {
      const clone = deepClone(origin)
      const config = clone.__config__
      config.span = this.formConf.span // 生成代码时，会根据span做精简判断
      this.createIdAndKey(clone)
      clone.placeholder !== undefined && (clone.placeholder += config.label)
      tempActiveData = clone
      return tempActiveData
    },
    createIdAndKey (item) {
      const config = item.__config__
      config.formId = ++this.idGlobal
      config.renderKey = `${config.formId}${+new Date()}` // 改变renderKey后可以实现强制更新组件
      if (config.layout === 'colFormItem') {
        item.__vModel__ = `field${this.idGlobal}`
      } else if (config.layout === 'rowFormItem') {
        config.componentName = `row${this.idGlobal}`
        !Array.isArray(config.children) && (config.children = [])
        delete config.label // rowFormItem无需配置label属性
      }
      if (Array.isArray(config.children)) {
        config.children = config.children.map(childItem => this.createIdAndKey(childItem))
      }
      return item
    },
    empty () {
      this.$confirm('确定要清空所有组件吗？', '提示', { type: 'warning' })
        .then(
          () => {
            this.drawingList = []
            this.idGlobal = 100
          }
        )
    },
    drawingItemCopy (item, list) {
      let clone = deepClone(item)
      clone = this.createIdAndKey(clone)
      list.push(clone)
      this.activeFormItem(clone)
      this.saveProjectItemInfo(clone)
    },
    drawingItemDelete (index, list) {
      let item = list[index]
      list.splice(index, 1)
      this.$nextTick(() => {
        const len = this.drawingList.length
        if (len) {
          this.activeFormItem(this.drawingList[len - 1])
        }
      })
      this.deleteProjectItemInfo(item)
    },
    tagChange (newTag) {
      newTag = this.cloneComponent(newTag)
      const config = newTag.__config__
      newTag.__vModel__ = this.activeData.__vModel__
      newTag.sort = this.activeData.sort
      config.formId = this.activeId
      config.span = this.activeData.__config__.span
      this.activeData.__config__.tag = config.tag
      this.activeData.__config__.tagIcon = config.tagIcon
      this.activeData.__config__.document = config.document
      this.activeData.typeId = newTag.typeId
      if (typeof this.activeData.__config__.defaultValue === typeof config.defaultValue) {
        config.defaultValue = this.activeData.__config__.defaultValue
      }
      Object.keys(newTag)
        .forEach(key => {
          if (this.activeData[key] !== undefined) {
            newTag[key] = this.activeData[key]
          }
        })
      this.activeData = newTag
      this.updateProjectItemInfo(newTag)
      this.updateDrawingList(newTag, this.drawingList)
    },
    updateDrawingList (newTag, list) {
      const index = list.findIndex(item => item.__config__.formId === this.activeId)
      if (index > -1) {
        list.splice(index, 1, newTag)
      } else {
        list.forEach(item => {
          if (Array.isArray(item.__config__.children)) this.updateDrawingList(newTag, item.__config__.children)
        })
      }
    }
  }
}
</script>

<style lang='scss'>
@import "@/assets/styles/form/home";
@import "@/assets/styles/form/index";
</style>
<style lang="scss" scoped>
.center-board {
  .center-board-row {
    margin-right: 10px;
  }

  .form-head-title {
    padding: 0 10px;
    text-align: center;

    .form-name-text:hover {
      border: 1px dashed #7b7b7b;
      min-height: 100px;
    }
  }

  .form-head-desc {
    padding: 0 10px;
  }

  .form-head-divider {
    margin-right: 10px;
    margin-left: 10px;
    width: auto;
  }
}
</style>
