//
//  MoreVC.swift
//  WOKA
//
//  Created by MacBook Pro on 10/06/24.
//

import UIKit
import AVFoundation
import GoogleMobileAds

class MoreVC: UIViewController {

    @IBOutlet weak var blogsCollectionView: UICollectionView!
    
    @IBOutlet weak var homeBtn: UIView!
    @IBOutlet weak var songTableView: UITableView!
    @IBOutlet weak var blogRetryStack: UIStackView!
    @IBOutlet weak var blogActivityIndicator: UIActivityIndicatorView!
    @IBOutlet weak var blogRetryBtn: LocalisedElementsButton!
    
    @IBOutlet weak var songRetryStack: UIStackView!
    @IBOutlet weak var songActivityIndicator: UIActivityIndicatorView!
    @IBOutlet weak var songRetry: LocalisedElementsButton!
    @IBOutlet weak var trailerTask: UIStackView!
    @IBOutlet weak var trailerView: UIView!
    @IBOutlet weak var customAdImage: UIImageView!
    @IBOutlet weak var customAdHeight: NSLayoutConstraint!
    
    var vm = MoreVM()
    var timeObserverToken: Any?

    override func viewDidLoad() {
        super.viewDidLoad()
        vm.vc = self
        vm.initView()
        
        NotificationCenter.default.addObserver(self,selector: #selector(appDidEnterBackground),name: UIApplication.didEnterBackgroundNotification,object: nil)
        NotificationCenter.default.addObserver(self,selector: #selector(appWillEnterForeground),name: UIApplication.didBecomeActiveNotification,object: nil)
    }
    
    deinit{
        NotificationCenter.default.post(name: .enableDisableSideBar, object: nil, userInfo: ["type": true])
        NotificationCenter.default.removeObserver(self,name: UIApplication.didEnterBackgroundNotification, object: nil)
        NotificationCenter.default.removeObserver(self,name: UIApplication.didBecomeActiveNotification, object: nil)
        do {
            try AVAudioSession.sharedInstance().setActive(false)
        } catch {
            print("Failed to deactivate audio session: \(error.localizedDescription)")
        }
        vm.player?.pause()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        NotificationCenter.default.post(name: .enableDisableSideBar, object: nil, userInfo: ["type": false])
    }
    
    @IBAction func playTrailerBtnTapped(_ sender: LocalisedElementsButton) {
        PersistentStorage.shared.addTrailerCount()
        let item = JwPlayerItemCreate(url: APIEndPoints.StaticURLs.masilaUrl, poster: nil, titles: "Masila")
        JWPlayerManager.shared.presentPlayer(from: self, playerItems: [item], contentType: .trailer, videoIDs: [0])
    }
    
    @IBAction func retryBtnTapped(_ sender: LocalisedElementsButton) {
    }
    
    // MARK: - App Lifecycle
    
    @objc func appDidEnterBackground() {
        if let currentIndexPlayingSong = vm.currentIndexPlayingSong{
            let song = vm.songData[currentIndexPlayingSong]
            vm.setupNowPlayingInfo(songTitle: song.title ?? "WOKA Song")
            vm.setupRemoteCommandCenter()
        }
        
    }
        
    @objc func appWillEnterForeground(){
        vm.stopMPNowPlayin()
    }

}

// MARK: - TableView DataSource , Delegates

extension MoreVC : TableViewSRC{
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return vm.songData.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        
        let cell = tableView.dequeueReusableCell(withIdentifier: "SongListCell", for: indexPath) as! SongListCell
        let songData = vm.songData[indexPath.row]
//        let isActive = (indexPath.row == vm.currentIndexPlayingSong)
        if let index = vm.currentIndexPlayingSong , index == indexPath.row{
            cell.setData(data: songData,playerStatus: vm.playerStatus, active: true, currentTime: currentTimePlayer)
        }else{
            cell.setData(data: songData,playerStatus: .stopped , active: false, currentTime: 0)
        }
        
        return cell
    }
    
    func getFormattedTime(from player: AVPlayer) -> String {
        let currentTime = player.currentTime()
        let seconds = CMTimeGetSeconds(currentTime)
        
        if !seconds.isFinite {
            return "00:00:00"
        }
        
        let hours = Int(seconds) / 3600
        let minutes = (Int(seconds) % 3600) / 60
        let secs = Int(seconds) % 60
        
        return String(format: "%02d:%02d:%02d", hours, minutes, secs)
    }
    
    func handleTap(indexPath : IndexPath){
        
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        guard let cell = tableView.cellForRow(at: indexPath) else { return }
        addAnimation(cell: cell) { [weak self] in
            guard let self else{return}
            vm.handleInlinePlay(indexPath: indexPath.row)
        }
    }
    
    func addAnimation(cell : UITableViewCell, completion : @escaping () -> Void){
        UIView.animate(withDuration: 0.1,animations: {
            cell.transform = CGAffineTransform(scaleX: 0.95, y: 0.95)
        },
        completion: { _ in
            UIView.animate(withDuration: 0.1) {
                cell.transform = CGAffineTransform.identity
                completion()
            }
        })
    }
    
    func startPlaying(song: SongBlogDM.PaintDatum, at indexPath: IndexPath) {
        // Set up and start the player
        stopPlaying()
        if let urlString = song.contentMoreDetails?.first?.url , let url = URL(string: urlString){
            vm.player = AVPlayer(url: url)
            vm.player?.play()
            vm.playerStatus = .play
            vm.currentIndexPlayingSong = indexPath.row
            addPeriodicTimeObserver()
            vm.observePlayer()
        }
    }
    
    func stopPlaying() {
        // Remove the periodic time observer
        removePeriodicTimeObserver()
        
        // Stop the player
        vm.player?.pause()
//        vm.player = nil
        vm.playerStatus = .stopped
        vm.currentIndexPlayingSong = nil
    }
    
    func removePeriodicTimeObserver() {
        if let token = timeObserverToken {
            vm.player?.removeTimeObserver(token)
            timeObserverToken = nil
        }
    }
    
    func addPeriodicTimeObserver() {
        let interval = CMTime(seconds: 1, preferredTimescale: CMTimeScale(NSEC_PER_SEC))
        timeObserverToken = vm.player?.addPeriodicTimeObserver(forInterval: interval, queue: .main) { [weak self] time in
            guard let self = self else { return }
            currentTimePlayer = Int(CMTimeGetSeconds(time))
            if let currentPlayingIndex = self.vm.currentIndexPlayingSong,
               let cell = self.songTableView.cellForRow(at: IndexPath(row: currentPlayingIndex, section: 0)) as? SongListCell {
                cell.updateCurrentTime()
            }
        }
    }
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 60
    }
}


// MARK: - CollectionView DataSource Delegate

extension MoreVC : CollectionViewSRC{
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return vm.blogData.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: K.CellIdentifier.Home.blogsCell, for: indexPath) as! BlogsCell
        cell.setData(data : vm.blogData[indexPath.row])
        return cell
    }
    
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        PersistentStorage.shared.addOthersCount()
        let data = vm.blogData[indexPath.row]
        let sb = UIStoryboard(name: K.StoryBoard.theme, bundle: nil)
        let vcPush = sb.instantiateViewController(withIdentifier: K.StoryBoardID.Theme.blogDetailsVC) as! BlogDetailsVC
        vcPush.blogData = data
        vcPush.modalPresentationStyle = .overCurrentContext
        vcPush.modalTransitionStyle = .crossDissolve
        self.present(vcPush, animated: true)
    }
}

// MARK: - Collection Flow Layout

extension MoreVC : UICollectionViewDelegateFlowLayout{
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return 5
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
        return 5
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
        return UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let itemsPerRow: CGFloat = 2.2
        let paddingSpace = 5 * (itemsPerRow + 1)
        let availableWidth = collectionView.frame.width - paddingSpace
        let widthPerItem = availableWidth / itemsPerRow
        return CGSize(width: widthPerItem, height: widthPerItem)
    }
}

// MARK: - Google Ad Banner Delegate

extension MoreVC : GADBannerViewDelegate{
    func bannerViewDidReceiveAd(_ bannerView: GADBannerView) {
        bannerView.alpha = 0
        bannerView.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
        UIView.animate(withDuration: 0.3, animations: { [weak self] in
            guard let self else{return}
            trailerView.alpha = 0
            bannerView.alpha = 1
        })
        print("bannerViewDidReceiveAd")
    }
    
    func bannerView(_ bannerView: GADBannerView, didFailToReceiveAdWithError error: Error) {
        print("bannerView:didFailToReceiveAdWithError: \(error.localizedDescription)")
    }

    func bannerViewDidRecordImpression(_ bannerView: GADBannerView) {
      print("bannerViewDidRecordImpression")
    }

    func bannerViewWillPresentScreen(_ bannerView: GADBannerView) {
      print("bannerViewWillPresentScreen")
    }

    func bannerViewWillDismissScreen(_ bannerView: GADBannerView) {
      print("bannerViewWillDIsmissScreen")
    }

    func bannerViewDidDismissScreen(_ bannerView: GADBannerView) {
      print("bannerViewDidDismissScreen")
    }
}

//class VideoAVPlayer {
//    
//    var player: AVPlayer?
//    var playerObserver: NSKeyValueObservation?
//    var status = PlayerStatus.loading
//    
//    init(url: URL) {
//        self.player = AVPlayer(url: url)
//        observePlayer()
//    }
//    
//    private func observePlayer() {
//        playerObserver = player?.observe(\.timeControlStatus, options: [.new, .old], changeHandler: { [weak self] player, change in
//            guard let self = self else { return }
//            switch player.timeControlStatus {
//            case .playing:
//                print("Player is playing")
//                self.status = .play
//            case .paused:
//                print("Player is paused")
//                self.status = .pause
//            case .waitingToPlayAtSpecifiedRate:
//                print("Player is waiting to play at specified rate")
//                self.status = .loading
//            @unknown default:
//                print("Unknown player status")
//            }
//        })
//    }
//    
//    deinit {
//        playerObserver?.invalidate()
//    }
//    
//    func play() {
//        player?.play()
//    }
//    
//    func pause() {
//        player?.pause()
//    }
//}