import BaseCurd from './BaseCurd'
import MapBuilder from './MapBuilder'
import bindPrototype from './bindPrototype'

export default (Target, hasPagination = true) => ({
  name: 'BaseCurdList',
  extends: BaseCurd(Target),
  data: () => ({
    optionGroup: Object.freeze({}),
    query: Target.$$getQuery() || {},
    oQuery: {},
    pagination: {
      pageNo: 0,
      pageSize: 20
    },
    oPagination: {
      pageNo: 0,
      pageSize: 20
    },
    list: Object.freeze([]),
    total: 0,
    selectedData: null,
    selectedList: Object.freeze([]),
    editorName: 'editor'
  }),
  methods: {
    afterLoadList () {
      this.selectedList = Object.freeze([])
      this.selectedData = null
      setTimeout(() => {
        this.$refs.table && this.$refs.table.doLayout()
      }, 0)
    },
    loadList () {
      let query = Object.assign({}, this.query)
      if (hasPagination) {
        Object.assign(query, this.pagination)
        this.$$request(Target.$$api.getPagination, this.query, this.pagination)
          .then(data => {
            const { count, list } = data
            const { pagination } = this
            const { pageSize } = pagination
            if (list.length > 0 || pagination.pageNo === 1) {
              this.total = count
              this.list = Object.freeze(bindPrototype(data.list, Target))
              this.afterLoadList()
              return
            }

            pagination.pageNo = Math.floor(count / pageSize)
            this.loadList()
          }).catch(console.error).finally(() => {})
      } else {
        this.$$request(Target.$$api.getList, this.query).then(list => {
          this.total = list.length
          this.list = Object.freeze(bindPrototype(list, Target))
          this.afterLoadList()
        }).catch(console.error).finally(() => {})
      }
    },
    currentPageNoChange () {
      this.loadList()
    },
    onResetBtnClick () {
      this.query = JSON.parse(JSON.stringify(this.oQuery))
      this.pagination = { ...this.oPagination }
      this.loadList()
    },
    onSearchBtnClick () {
      this.pagination.pageNo = 1
      this.loadList()
    },
    onSelectionChange (selection) {
      this.selectedList = Object.freeze(selection)
    },
    onRowClick (data) {
      this.selectedData = data
    },
    onOpenEditorBtnClick (data, isView) {
      const editor = this.getEditor()
      data instanceof Event ? editor.open() : editor.open(data, isView)
    },
    deleteSuccess () {
      this.loadList()
      this.$notify({
        title: '成功',
        message: '删除成功',
        type: 'success',
        position: 'bottom-right'
      })
    },
    deleteFailed () {
      this.$notify.error({
        title: '失败',
        message: '删除失败',
        position: 'bottom-right'
      })
    },
    deleteData (data) {
      this.$$request(Target.$$api.delete, data, Target)
        .then(this.deleteSuccess)
        .catch(this.deleteFailed)
        .finally(() => {})
    },
    onDeleteBtnClick (data) {
      const name = this[this.$$nameProp]
      this.$confirm(`此操作将删除${name ? `'${name}'` : '该记录'}, 是否继续？`, '确认', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        confirmButtonClass: 'confirm-dialog-confirm-btn',
        cancelButtonClass: 'confirm-dialog-cancel-btn',
        type: 'warning'
      }).then(() => {
        this.deleteData(data)
      }).catch(() => {})
    },
    onSaved () {
      this.loadList()
    },
    getEditor () {
      return this.$refs[this.editorName]
    },
    getOptions (optionTargetConfigs, optionGroup) {
      const { query } = this
      return Promise.all(
        optionTargetConfigs.map(
          optionTargetConfig => {
            const optionTarget = optionTargetConfig.Target
            return this.$$request(optionTarget.$$api.getList, typeof optionTargetConfig.getQuery === 'function' ? optionTargetConfig.getQuery(optionGroup) : undefined).then(options => {
              options = bindPrototype(options, optionTarget)
              optionGroup[optionTarget.name] = {
                list: options,
                map: MapBuilder.getObjectMap(options, optionTarget.$$idProp),
                Target: optionTarget
              }

              const { setQuery } = optionTargetConfig
              typeof setQuery === 'function' && setQuery(options, query, optionTarget)
            })
          })
      )
    },
    async getOptionGroup () {
      const optionGroup = {}

      const { $$optionTargetConfigGroup } = Target
      if (Array.isArray($$optionTargetConfigGroup)) {
        const $$optionTargetConfigGroupLen = $$optionTargetConfigGroup.length
        for (let i = 0; i < $$optionTargetConfigGroupLen; i++) {
          const optionTargetConfigs = $$optionTargetConfigGroup[i]
          const optionTargetConfigsLen = optionTargetConfigs.length
          if (optionTargetConfigsLen > 0) {
            await this.getOptions(optionTargetConfigs, optionGroup)
          }
        }
      }

      return Object.freeze(optionGroup)
    },
    setOptionGroup () {
      this.getOptionGroup(Target).then(optionGroup => {
        this.optionGroup = optionGroup
        Target.$$optionData = optionGroup
        this.oQuery = Object.freeze(JSON.parse(JSON.stringify(this.query)))
        this.loadList()
      })
    }
  },
  created () {
    this.setOptionGroup()
  }
})