//
//  IntroView.swift
//  AcaMate
//
//  Created by Sean Kim on 12/1/24.
//

import SwiftUI
import Combine

struct IntroView: View {
    @State var cancellables: Set<AnyCancellable> = []
    @Binding var naviState : NaviState
    
    var body: some View {
        VStack(spacing: 0) {
            Spacer()
                .frame(height: 100)
            Image("Team_Icon")
                .resizable()
                .frame(width: 200, height: 200)
                .background(.white)
                .border(.black)
                .padding()
            Spacer()
            HStack(spacing: 4) {
                Image("Team_Icon")
                    .resizable()
                    .frame(width: 24, height: 24)
                Text("STEIN")
                    .font(.nps(font: .bold, size: 16))
                    .foregroundStyle(Color(.Text.detail))
            }
            .padding(.bottom,12)
            Text("Copyright © Team.Stein")
                .font(.nps(font: .regular, size: 14))
                .foregroundStyle(Color(.Text.detail))
                .padding(.bottom,50)
        }
        .fullView(.Normal.normal)
        .onAppear {
            printLog("IntroView_onAppear")
            loadVersion()
                .sink { completion in
                    switch completion {
                    case .failure(let error):
                        printLog(error)
                    case .finished: break
                    }
                } receiveValue: { version in
                    switch compareVersion(version.force_ver, currentVersion()){
                    case .bigger:
                        printLog("강제 업데이트")
                    default:
                        switch compareVersion(version.final_ver, currentVersion()) {
                        case .bigger:
                            if version.choice_update_yn {
                                printLog("선택 업데이트")
                            }
                            else {
                                printLog("정상 동작")
                                naviState.set(act: .RESET, path: .Login)
                            }
                        default:
                            printLog("선택 업데이트 넘어감")
                            naviState.set(act: .MOVE, path: .Login)
                            
                        }
                    }
                }
                .store(in: &cancellables)
            
            
        }
    }
    
    
    private func loadVersion() -> Future<VersionData, Error> {
        return Future { promise in
            loadAPIData(url: "\(API_URL)",
                        path: "/api/v1/in/app/version",
                        parameters: ["type":"I"],
                        decodingType: APIResponse<VersionData>.self)
            .sink { completion in
                switch completion {
                case .failure(let error):
                    printLog("\(error)")
                    promise(.failure(error))
                case .finished: break
                }
            } receiveValue: { data in
                guard let apiData = data as? APIResponse<VersionData> else {return}
                printLog("\(apiData.data.toStringDict())")
                promise(.success(apiData.data))
            }
            .store(in: &cancellables)
        }
        
    }
    
    private func currentVersion() -> String {
        guard let currentVer = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String else { return "" }
        return currentVer
        
    }
    
    private func versionChange(ver: String) -> [Int] {
        return ver.components(separatedBy: ["."]).map {Int($0) ?? 0}
    }
}




//#Preview {
//    IntroView(path: $NavigationPath())
//}