//
//  PLJobViewModel.swift
//  IOS_study
//
//  Created by CC-star on 2025/6/29.
//

import Foundation


@Observable final class PLJobViewModel {
   var jobs: [PLJob] = []
   var currentPage = 0
   var isFcJobs = false
   var isJobsLoaded = false
   
   //分页用
   var fcJobsErrMsg = ""
   var isFinshed = false
   
   var filter = PLFilter()//筛选用，实例化PLFilter
   var order = PLOrder.updatedAt//排序用
   var isOF = false //排序筛选完成后滑动到顶部
   
   var job = PLJob()
   var draftJob = PLJob()//草稿
   var isPosting  = false//是否在提交
   var isRemoving  = false
   var isToggling = false//上/下线
   
   @MainActor func getJobs(isResFresh: Bool = false) async {
      if isFcJobs { return }//保证当前没有在获取数据状态，防止用户在请求数据时，再次请求数据
      isFcJobs = true//开始获取数据状态
      defer{ isFcJobs = false }//最后关闭获取数据状态
      isJobsLoaded = false
      fcJobsErrMsg = ""
      if isResFresh {
         currentPage = 0
         isFinshed = false
      }
      do {
         let skip = kJobLimit * currentPage
         let newJobs = try await PLJobManager.shared.findJobsByREST(limit: kJobLimit, skip: skip, filter: filter, order: order)
         if isResFresh {
            jobs = newJobs
         } else {
            jobs.append(contentsOf: newJobs)//讲一个数组添加到另外一个数组
         }
         currentPage += 1//分页
         isJobsLoaded = true//防止onappear多次加载
         
         if newJobs.count < kJobLimit || newJobs.isEmpty {
            isFinshed = true
         }
      } catch {
         if isResFresh {
            jobs.removeAll()//置空
         }
         fcJobsErrMsg = "\(error)"
         print("获取plJobs失败：\(error)")
      }
   }
   @MainActor func postJob(isEditing: Bool = false) async throws {
      job = draftJob
      //      job.updatedAT = Date()
      
      //处理空格（必填部分)
      job.title = job.title.trimmed
      job.placeName = job.placeName.trimmed
      job.province = job.province.trimmed
      job.city = job.city.trimmed
      //处理空格（选填部分)
      if job.otherTime.isBlank { job.otherTime = "" } else { job.otherTime = job.otherTime.trimmed }
      if job.otherNeed.isBlank { job.otherNeed = "" } else { job.otherNeed = job.otherNeed.trimmed }
      if job.workContent.isBlank { job.workContent = "" } else { job.workContent = job.workContent.trimmed }
      if job.otherBenefit.isBlank { job.otherBenefit = "" } else { job.otherBenefit = job.otherBenefit.trimmed }
      job.userID = AuthManager.shared.getUserID()
      
      //存到数据库
      try await PLJobManager.shared.save(job: job, isEditing: isEditing)
      //      do {
      //         try await PLJobManager.shared.saveByREST(job: job)//使用链接进行存储
      //      } catch {
      //         print(error.localizedDescription)//返回中文的报错
      //      }
   }
   
   @MainActor func toggleJobStatus(id: String) async throws {
      isToggling = true
      defer {
         isToggling = false
      }
      job.isActive.toggle()
      try await PLJobManager.shared.toggleJobStatus(id: id, isAictive: job.isActive)
   }
  @MainActor func removeJob(id: String) async throws {
      isRemoving = true
      defer { isRemoving = false }
      try await PLJobManager.shared.removeJob(id: id)
   }
   
}