//
//  HomeViewModel.swift
//  SodaLive
//
//  Created by klaus on 2023/08/09.
//

import Foundation
import Combine

final class HomeViewModel: ObservableObject {
    
    private var subscription = Set<AnyCancellable>()
    
    private let userRepository = UserRepository()
    private let eventRepository = EventRepository()
    private let contentRepository = ContentRepository()
    private let playbackTrackingRepository = PlaybackTrackingRepository()
    
    enum CurrentTab: String {
        case content, live, audition, mypage
    }
    
    @Published var currentTab: CurrentTab = AppState.shared.startTab
    
    init() {
        NotificationCenter.default
            .publisher(for: .didReceiveHomeTab)
            .compactMap {
                $0.object as? CurrentTab
            }
            .sink { [weak self] currentTab in
                AppState.shared.setAppStep(step: .main)
                self?.currentTab = currentTab
            }
            .store(in: &subscription)
    }
    
    func pushTokenUpdate(pushToken: String) {
        userRepository.updatePushToken(pushToken: pushToken)
            .sink { result in
                switch result {
                case .finished:
                    DEBUG_LOG("finish")
                case .failure(let error):
                    ERROR_LOG(error.localizedDescription)
                }
            } receiveValue: { _ in
            }
            .store(in: &subscription)
    }
    
    func getMemberInfo() {
        userRepository.getMemberInfo()
            .sink { result in
                switch result {
                case .finished:
                    DEBUG_LOG("finish")
                case .failure(let error):
                    ERROR_LOG(error.localizedDescription)
                }
            } receiveValue: { response in
                let responseData = response.data
                
                do {
                    let jsonDecoder = JSONDecoder()
                    let decoded = try jsonDecoder.decode(ApiResponse<GetMemberInfoResponse>.self, from: responseData)
                    
                    if let data = decoded.data, decoded.success {
                        UserDefaults.set(data.can, forKey: .can)
                        UserDefaults.set(data.isAuth, forKey: .auth)
                        UserDefaults.set(data.role.rawValue, forKey: .role)
                        UserDefaults.set(data.auditionNotice ?? false, forKey: .isAuditionNotification)
                        if data.followingChannelLiveNotice == nil && data.followingChannelUploadContentNotice == nil && data.messageNotice == nil {
                            AppState.shared.isShowNotificationSettingsDialog = true
                        }

                        let dateFormatter = DateFormatter()
                        dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
                        
                        let currentDate = Date()
                        let lastActiveDate = dateFormatter.string(from: currentDate)
                        
                        var params = [
                            "nickname": UserDefaults.string(forKey: .nickname),
                            "last_active_date": lastActiveDate,
                            "charge_count": data.chargeCount,
                            "signup_date": data.signupDate,
                            "is_auth": data.isAuth,
                            "can": data.can
                        ]
                        
                        if data.isAuth {
                            params["gender"] = data.gender
                        }
                        
                        NotiflyClient.shared.setUser(userId: UserDefaults.int(forKey: .userId), params: params)
                        FirebaseTracking.shared.login(method: "email")
                    }
                } catch {
                    print(error)
                }
            }
            .store(in: &subscription)
    }
    
    func getEventPopup() {
        eventRepository.getEventPopup()
            .sink { result in
                switch result {
                case .finished:
                    DEBUG_LOG("finish")
                case .failure(let error):
                    ERROR_LOG(error.localizedDescription)
                }
            } receiveValue: { response in
                let responseData = response.data
                
                do {
                    let jsonDecoder = JSONDecoder()
                    let decoded = try jsonDecoder.decode(ApiResponse<EventItem>.self, from: responseData)
                    
                    if let data = decoded.data, decoded.success {
                        if data.id != UserDefaults.int(forKey: .notShowingEventPopupId) {
                            AppState.shared.eventPopup = data
                        }
                    }
                } catch {
                }
            }
            .store(in: &subscription)
    }
    
    func addAllPlaybackTracking() {
        let playbackTrackingList = playbackTrackingRepository.getAllPlaybackTracking()
        let trackingDataList = playbackTrackingList
            .filter {
                return $0.endPosition != nil
            }
            .filter { ($0.endPosition! - $0.startPosition) >= 3 }
            .map {
                PlaybackTrackingData(contentId: $0.audioContentId, playDateTime: $0.playDateTime, isPreview: $0.isPreview)
            }
        
        contentRepository.addAllPlaybackTracking(request: AddAllPlaybackTrackingRequest(trackingDataList: trackingDataList))
            .sink { result in
                switch result {
                case .finished:
                    DEBUG_LOG("finish")
                case .failure(let error):
                    ERROR_LOG(error.localizedDescription)
                }
            } receiveValue: { [unowned self] response in
                let responseData = response.data
                
                do {
                    let jsonDecoder = JSONDecoder()
                    let decoded = try jsonDecoder.decode(ApiResponseWithoutData.self, from: responseData)
                    
                    if decoded.success {
                        self.playbackTrackingRepository.removeAllPlaybackTracking()
                    }
                } catch {
                }
            }
            .store(in: &subscription)
    }
}