//
//  PLJobView.swift
//  IOS_study
//
//  Created by CC-star on 2025/6/13.
//

import SwiftUI
import Photos

struct PLJobView: View {
   var canEdit = false
   var showBoss = true
   @Environment(HUD.self) var hud
   @Environment(PLJobViewModel.self) var vm
   @Environment(ProfileViewModel.self) var profileVM
   @Environment(AuthViewModel.self) var authVM
   @Environment(ReviewViewModel.self) var reviewVM
   @Environment(\.displayScale) var displayScale//获取屏幕分辨率
   @State var showActiveDialog = false//是否上/下线
   @State var showRemoveDialog = false//是否移除
   @State var showRemoveAlert = false//移除警告
   @State var saveImage: UIImage?
   @State var openSetting = false
   @State var viewDidLoad = false
   @State var showReportDialog = false
   @State var showPostReview = false
   @Binding var naviPath : NavigationPath
   var job: PLJob { vm.job }
   var isActive:Bool{ vm.job.isActive }
   var titleAD: String { isActive ? "" : "[已下线]" }
   var isIng: Bool { vm.isRemoving || vm.isToggling }
   var shareImage: Image? {  if let saveImage { return Image(uiImage: saveImage) } else { return nil } }
   var body: some View {
      List {
         tilteView//头部视图
         if showBoss { companyView }//公司视图
         detailView//工作详情
         contactView//应聘电话
         goRevireBtn
         listBottomEView()
      }.listStyle().navigationTitle("长期兼职").navigationBarTitleDisplayMode(.inline).navigationBarBackButtonHidden()
      //顶部返回键
         .toolbar {
            ToolbarItem(placement: .topBarLeading) {
               Button {
                  if !naviPath.isEmpty {//检查是否为最后一页
                     naviPath.removeLast()//返回上一页
                  }
               } label: {
                  Image(systemName: "chevron.left").secondary().padding(.horizontal,6)
               }
            }
            ToolbarItem(placement: .topBarTrailing) {
               HStack(spacing: 3) {
                  if !canEdit {
                     Button("举报") { showReportDialog = true }
                        .confirmationDialog("确定举报吗？", isPresented: $showReportDialog, titleVisibility: .visible) {
                           Button("确定") {
                              Task {
                                 await report()
                              }
                           }
                           Button("取消", role: .cancel) {  }
                        }
                  }
                  
                  Button { Task { await saveImageToAlbum() } } label: { Text("保存") }
                  if let shareImage {
                     ShareLink(item: shareImage, preview: SharePreview("以长图形式分享", image: shareImage)) { Text("分享") }
                  }
               }.tc2().size15()
            }
         }
         .alert("请允许保存图片权限", isPresented: $openSetting) {
            Button("再想想") { openSetting = false }
            Button("去设置") {
               if let url = URL(string: UIApplication.openSettingsURLString), UIApplication.shared.canOpenURL(url) { UIApplication.shared.open(url) }
            }
         } message: { Text("请重新设置照片权限") }
         .sheet(isPresented: $showPostReview, content: {
            PostReviewView()
         })
         .onAppear {
            if !viewDidLoad {
               Task { generateSnapshot() }
               viewDidLoad = true
            }
         }
   }
   var shareView: some View {
      VStack(spacing: 0) {
         Text("招兼职").size18b()
         tilteView//头部视图
         companyView //公司视图
         detailView//工作详情
         contactView//应聘电话
         listBottomEView()
         Text("\(kAppName)App").accent().bold().padding()
      }.padding(.top, 60).padding(.bottom, 30)
         .frame(width: UIScreen.main.bounds.size.width)//按照用户的手机屏幕来得到宽度
         .bg2()
   }
   @MainActor func generateSnapshot() {
      let renderer = ImageRenderer(content: shareView)
      renderer.scale = displayScale
      saveImage = renderer.uiImage
   }
   @MainActor func saveImageToAlbum() async {
      if let saveImage {
         let currenStatus = PHPhotoLibrary.authorizationStatus(for: .addOnly)
         if currenStatus == .notDetermined {//未申请过权限
            let status = await PHPhotoLibrary.requestAuthorization(for: .addOnly)//添加只向相册添加相片的权限
            if status == .authorized {//第一次同意
               writeToAlbum(saveImage)
            } else if currenStatus == .authorized {//之前同意过
               writeToAlbum(saveImage)
            } else { openSetting = true }
         } else {  hud.show("相片保存失败，请退出本页后重试") }
      }
   }
   func writeToAlbum(_ saveImage: UIImage) { UIImageWriteToSavedPhotosAlbum(saveImage, nil, nil, nil); hud.show("相片保存成功，请返回相册查看") }
   // MARK: - 举报
   func report() async {
      var reports = (UserDefaults.standard.array(forKey: jobReportsKey) as? [String]) ?? []
      if reports.contains(job.id) {
         hud.show("已举报，会尽快处理")
      } else {
         let userID = AuthManager.shared.getUserID()
         if !userID.isEmpty {
            if reports.count > 50 { reports.removeAll() }
            do {
               try await JobReportManger.shared.save(report: JobReport(jobID: job.id, jobType: "兼职", jobTitle: job.title, bossID: job.userID, userID: userID))
               reports.append(job.id)
               UserDefaults.standard.set(reports, forKey: jobReportsKey)
               hud.show("举报成功，请等候处理")
            } catch {
               print("举报失败：\(error)")
               hud.show("举报失败，请检查网络")
            }
         } else { hud.show("请先登录") }
      }
   }
}