/*
 * @Author: your name
 * @Date: 2020-10-28 14:40:52
 * @LastEditTime: 2020-12-29 14:33:05
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \dbadmin\src\store\modules\query.js
 */
import { Module, VuexModule, Mutation } from 'vuex-module-decorators'

export const DEFAULT_TAG = 'default'

function nullObj() {
  return Object.create(null)
}

@Module({ name: 'query', namespaced: true })
class Query extends VuexModule {
  data = nullObj()

  pageData = nullObj()

  fetchs = nullObj()

  @Mutation
  init(data) {
    let path = ''
    let initData = nullObj()
    let tag = DEFAULT_TAG
    if (typeof data === 'string') {
      path = data
    } else if (typeof data === 'object') {
      if (data.path) path = data.path
      if (data.initData) initData = data.initData
      if (data.tag) tag = data.tag
    }
    if (!path) throw new Error('path不能为空')
    initPath.call(this, path)
    if (!this.data[path][tag]) {
      this.data[path][tag] = initData
    }
    if (!this.pageData[path][tag]) {
      this.pageData[path][tag] = {
        page: 1,
        size: 20
      }
    }
  }

  @Mutation
  setData({ path, data, tag = DEFAULT_TAG }) {
    initPath.call(this, path)
    this.data[path][tag] = data
  }

  @Mutation
  registerFetch({ path, func, tag = DEFAULT_TAG }) {
    initPath.call(this, path)
    this.fetchs[path][tag] = func
  }

  @Mutation
  unregisterFetch(path, tag = DEFAULT_TAG) {
    initPath.call(this, path)
    delete this.fetchs[path][tag]
  }
}

function initPath(path) {
  if (this instanceof Window) {
    throw new Error('initPath this对象没有绑定')
  }
  if (!this.data[path]) this.data[path] = nullObj()
  if (!this.pageData[path]) this.pageData[path] = nullObj()
  if (!this.fetchs[path]) this.fetchs[path] = nullObj()
}

// function initTag(path, tag) {
//   if (this instanceof Window) {
//     throw new Error('initPath this对象没有绑定')
//   }
//   initTag.call(path)
//   if (!this.data[path][tag]) this.data[path][tag] = nullObj()
//   if (!this.pageData[path][tag]) this.pageData[path][tag] = nullObj()
//   if (!this.fetchs[path][tag]) this.fetchs[path][tag] = nullObj()
// }

export default Query