import { DateFormat, IBestToast, userInfo, UserInfo, YTAvoid, YTDateUtil, yTRouter } from "basic"
import { BabyFoodApi } from "../Apis/BabyFoodApi"
import { routerUtils } from "../utils/RouterUtils"
import { AppStorageV2 } from "@kit.ArkUI"
import {
  AddRecipeEventData,
  BabyInfo, Cuisine, DayPlan, PurchaseList, WeeklyPlan, WeeklyPlanPurchaseList } from "../model/Index"
import { emitter } from "@kit.BasicServicesKit"
import { EventConstant } from "../model/Constant"

@ObservedV2
export class MainViewModel{
  @Trace safeTop: number = 0
  @Trace babyList: BabyInfo[] = []
  // 当前选择的宝宝信息
  @Trace selectedBabyIndex: number = -1
  // 当前的宝宝信息
  @Trace babyInfo: BabyInfo = AppStorageV2.connect<BabyInfo>(BabyInfo, () => new BabyInfo())!
  // 用户信息
  @Trace userInfo: UserInfo = AppStorageV2.connect<UserInfo>(UserInfo, 'UserInfo', () => userInfo)!
  // 菜品下拉菜单
  @Trace dishList: Cuisine[] = []
  // 本周的食谱计划
  @Trace allPlan: WeeklyPlan = {}
  // 本周的食谱详情
  @Trace planList?: WeeklyPlanPurchaseList
  // 本周的采购清单
  @Trace purchaseList?: PurchaseList[]

  // 一周
  week: string[] = ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
  // 钩子函数列表
  eventFunc: Array<() => void>  =  []

  constructor() {
    this.safeTop = AppStorage.get(YTAvoid.SAFE_TOP_KEY) as number

    //
    emitter.on(EventConstant.ADD_RECIPE_TO_WEEKLY_PLAN, (ans) => {
     this.addRecipeEvent(ans.data as AddRecipeEventData)
    })
  }

  // 登录状态改变
  async LoginStatusChange(){
    this.userInfo.setUserInfoAndLogin(userInfo, false)

    if(this.userInfo.checkLogin()){
      await this.getBabyList()
      await this.getDishList()
    } else {
      this.clearDataSource(true)
    }
  }

  // 登录校验 - 宝宝信息校验
  checkLogin(f: () => void, isCheckBaby: boolean = false) {
    if(this.userInfo.checkLogin()) {
      if(this.babyInfo?.id || !isCheckBaby){
        f()
      } else {
        IBestToast.show('请先添加宝宝信息吧！')
        this.increaseBabyInfo()
      }
    } else {
      yTRouter.router2LoginPage(true)
    }
  }

  // 修改选中的宝宝信息
  async updateBabyInfo(index: number) {
    if(index == this.selectedBabyIndex) return

    this.clearDataSource()

    BabyInfo.override(this.babyInfo, this.babyList[index])
    this.selectedBabyIndex = index

    await this.getWeeklyPlan()
    await this.getWeeklyPurchaseList()
    this.eventFunc.forEach(f => f())
  }

  // 添加事件 -
  addEvent(f: () => void) {
    this.eventFunc.push(f)
    f()
  }

  // 返回菜品信息
  getCuisineInfo(id: number): Cuisine {
    let index = this.dishList.findIndex(item => item.id === id)
    return this.dishList[index]
  }

  // 清空数据源
  clearDataSource(isLoginOut: boolean = false) {
    this.allPlan = {}
    this.planList = {}
    this.purchaseList = []

    if(isLoginOut){
      BabyInfo.override(this.babyInfo)
      this.babyList = []
    }
  }

  // 返回对应天数的菜谱计划
  getDayPlan(week: number | string): DayPlan {
    let switchFlag: string = ''
    if(typeof week === 'string') {
      switchFlag = week
    } else {
      switchFlag = this.week[week]
    }

    if(!this.planList) this.planList = new WeeklyPlanPurchaseList()

    switch (switchFlag) {
      case '周一':
        if(this.planList.monday == undefined) this.planList.monday = new DayPlan()
        return this.planList.monday
      case '周二':
        if(this.planList.tuesday == undefined) this.planList.tuesday = new DayPlan()
        return this.planList.tuesday
      case '周三':
        if(this.planList.wednesday == undefined) this.planList.wednesday = new DayPlan()
        return this.planList.wednesday
      case '周四':
        if(this.planList.thursday == undefined) this.planList.thursday = new DayPlan()
        return this.planList?.thursday
      case '周五':
        if(this.planList.friday == undefined) this.planList.friday = new DayPlan()
        return this.planList?.friday
      case '周六':
        if(this.planList.saturday == undefined) this.planList.saturday = new DayPlan()
        return this.planList?.saturday
      case '周日':
        if(this.planList.sunday == undefined) this.planList.sunday = new DayPlan()
        return this.planList?.sunday
    }
    return new DayPlan()
  }

  // 监听添加食谱事件
  addRecipeEvent(data: AddRecipeEventData){
    console.log(`监听添加食谱事件 data = ${JSON.stringify(data)}`)
    let week: number = Number.parseInt(data.week!)
    let meal: number = Number.parseInt(data.meal!)
    let dayPlan: DayPlan = this.getDayPlan(week)
    const cuisine: Cuisine = this.getCuisineInfo(data.recipe!.id!)


    if(meal == 0) {
      dayPlan.breakfast = cuisine
    } else if(meal == 1) {
      dayPlan.lunch = cuisine
    } else if(meal == 2) {
      dayPlan.dinner = cuisine
    }

    this.updateWeeklyPlan()
  }

  // 获取本周食谱计划
  async getWeeklyPlan(startDate?: string){
      try {
        if(!startDate) startDate = YTDateUtil.formatDate(new Date(), DateFormat.UNDERLINE)
        this.allPlan = await BabyFoodApi.getWeeklyPlan(this.babyInfo.id, startDate)
        this.planList = this.allPlan.weeklyPlan
        this.planList!.id = this.allPlan.id
      } catch (e){
        console.log(`e = ${JSON.stringify(e)}`)
      }
  }

  // 更新本周食谱计划
  async updateWeeklyPlan(isReload: boolean = true): Promise<boolean>{
    try {
      IBestToast.showLoading({message: "修改中"})

      await BabyFoodApi.updateWeeklyPlan(WeeklyPlanPurchaseList.clone(this.planList!))
      // 修改食谱清单后需刷新采购清单
      this.getWeeklyPurchaseList()
      // 刷新数据源
      if(isReload) this.getWeeklyPlan()
      return true
    } catch (e) {
      // 如果在更新食谱时发生错误，则刷新数据源
      this.getWeeklyPlan()
      return false
    } finally {
      IBestToast.hide()
    }
  }

  // 获取本周所有采购清单
  async getWeeklyPurchaseList(): Promise<void>{
    try {
      this.purchaseList = await BabyFoodApi.getWeeklyPurchaseList(this.babyInfo.id!)
    } catch (e) {
      console.log(`e = ${JSON.stringify(e)}`)
    }
  }

  // 获取菜品列表
  async getDishList(){
    try {
      this.dishList = await BabyFoodApi.getDishList()
    } catch (e){
      console.log(`e = ${JSON.stringify(e)}`)
    }
  }

  // 获取宝宝信息列表
  async getBabyList(){
    try {
      this.babyList = await BabyFoodApi.getBabyList()
      let index = this.babyList.findIndex(item => item.id === this.babyInfo.id)

      if(index != -1) {
        this.updateBabyInfo(index)
      } else {
        if(this.babyList.length > 0) {
          this.updateBabyInfo(0)
        } else {
          this.clearDataSource()
        }
      }
    } catch (e) {
      console.log(`e = ${JSON.stringify(e)}`)
    }
  }

  // 修改购买状态 - 清单 id
  async updateBuyStatus(Id: number, index: number){
    try {
      let ans = await BabyFoodApi.updatePurchaseStatus(Id)
      let l = this.purchaseList![index]
      l.purchased = l.purchased == '1' ? '0' : '1'
      this.purchaseList?.splice(index, 1, l)
    } catch (e) {
      console.log(`e = ${JSON.stringify(e)}`)
    }
  }

  // 进入添加宝宝信息页面
  increaseBabyInfo(){
    routerUtils.router2IncreaseBabyInfo((res) => {
      this.getBabyList()
    })
  }

  // 跳转至采购详情页
  goToPurchaseDetail() {
    routerUtils.router2PurchasingPage((res) => {
      this.getWeeklyPurchaseList()
    })
  }

  // 进入编辑宝宝信息页面
  editBabyInfo() {
    routerUtils.router2BabyInfoPage((res) => {
      this.getBabyList()
    })
  }

  /**
   * 重写的返回逻辑
   * @returns
   */
  _onBackPressed(){
    yTRouter.pop('')
    return true;
  }
}