export default {
  data () {
    return {
      show: false,
      currObj: {}
    }
  },
  computed: {
    isAdd () {
      return !this.currObj.id
    },
    dialogTitle () {
      return this.isAdd ? `新增${this.type}` : `编辑${this.type}`
    }
  },
  created () {
    this.getList()
  },
  methods: {
    getDefaults () {
      return { name: '', remark: '' }
    },
    transform (data) {
      return data
    },
    toAdd () {
      this.currObj = this.getDefaults()
      this.show = true
    },
    beforeEdit ({ id, name, remark }) {
      return { id, name, remark }
    },
    toEdit (item) {
      this.currObj = this.beforeEdit(item)
      this.$currObj = { ...this.currObj }
      this.show = true
    },
    close () {
      this.$currObj = null
      this.show = false
    },
    check () {
      return false
    },
    search () {
      const options = this.options
      options.list = []
      options.totalCount = 0
      options.params.pageNum = 1
      this.getList()
    },
    getList () {
      const options = this.options
      options.error = false
      options.loading = true
      this.proxy.list(options.params).then(({ data, totalCount }) => {
        options.list = this.transform(data)
        options.totalCount = totalCount
      }, () => {
        options.error = true
        options.list = []
      }).finally(() => {
        options.loading = false
      })
    },
    afterAdd () { },
    save () {
      if (this.check(this.currObj)) {
        if (!this.isAdd && Object.keys(this.$currObj).every(key => this.currObj[key] === this.$currObj[key])) {
          this.close()
          return
        }
        this.proxy[this.isAdd ? 'add' : 'update'](this.currObj).then(() => {
          if (this.isAdd) {
            this.afterAdd()
            this.search()
          } else {
            this.getList()
          }
          this.close()
        })
      }
    },
    toDel (item) {
      const options = this.options || this
      this.proxy.del(item).then(() => {
        if (options.list.length === 1 && options.params.pageNum > 1) {
          options.params.pageNum -= 1
        }
        this.getList()
      })
    }
  }
}