//
//  MPPositive_PlayerViewController.swift
//  MusicPlayer
//
//  Created by Mr.Zhou on 2024/4/29.
//

import UIKit
import Kingfisher

///b面播放器内容
class MPPositive_PlayerViewController: MPPositive_BaseViewController, UIViewControllerTransitioningDelegate {
    //播放器展示状态
    enum PlayerShowType:Int {
        ///展示封面
        case showCover = 0
        ///展示歌词
        case showLyric = 1
    }
    //当前上方展示View展示内容（默认展示封面）
    private var topShowType:PlayerShowType = .showCover{
        didSet{
            setSwitchAnimation(topShowType)
        }
    }
    //MARK: - 导航View中的内容
    //左侧向下的按钮
    private lazy var leftPopBtn:UIButton = {
        let btn = UIButton()
        btn.backgroundColor = .init(hex: "#FFFFFF", alpha: 0.15)
        //添加白色边框
        btn.layer.borderColor = UIColor(hex: "#FFFFFF", alpha: 0.3).cgColor
        btn.layer.borderWidth = 1*width
        btn.layer.cornerRadius = 21*width
        btn.layer.masksToBounds = true
        //设置图片
        btn.setImage(UIImage(named: "Player_Pop'logo"), for: .normal)
        btn.addTarget(self, action: #selector(disMissClick(_ :)), for: .touchUpInside)
        return btn
    }()
    //中间单选按钮组View(SONG|LYRICS)
    private lazy var switchActionView:UIView = createSwitchActionView()
    //生成SONG按钮(默认选中)
    private lazy var songBtn:UIButton = createStatueBtn("SONG", color: .init(hex: "#FFFFFF", alpha: 0.85), tag: 0)
    //生成LYRICS按钮
    private lazy var lyricsBtn:UIButton = createStatueBtn("LYRICS", color: .init(hex: "#FFFFFF", alpha: 0.45), tag: 1)
    //右侧关联按钮
    private lazy var relatedBtn:UIButton = {
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "Player_Related'logo"), for: .normal)
        btn.addTarget(self, action: #selector(relatedContentClick(_ :)), for: .touchUpInside)
        return btn
    }()
    //MARK: - 背景视图
    //背景封面图
    private lazy var backImageView:UIImageView = {
        let imageView:UIImageView = .init()
        imageView.image = placeholderImage
        imageView.contentMode = .scaleAspectFill
        return imageView
    }()
    //背景模糊图层
    private lazy var backBlurView:UIVisualEffectView = {
        // 创建一个模糊效果
        let blurEffect = UIBlurEffect(style: .dark)
        // 创建一个可交互的毛玻璃视图
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.alpha = 1
        blurEffectView.isUserInteractionEnabled = false
        return blurEffectView
    }()
    //MARK: - 底部按钮事件内容
    //播放状态按钮
    private lazy var playBtn:UIButton = {
        let btn:UIButton = .init()
        btn.setBackgroundImage(UIImage(named: "Player_Pause'logo"), for: .normal)
        btn.setBackgroundImage(UIImage(named: "Player_Player'logo"), for: .selected)
        btn.addTarget(self, action: #selector(playClick(_ :)), for: .touchUpInside)
        //默认无法交互（以免用户交互导致网络请求混乱）
        btn.isUserInteractionEnabled = true
        return btn
    }()
    //歌单列表按钮
    private lazy var listBtn:UIButton = {
        let btn:UIButton = .init()
        btn.setBackgroundImage(UIImage(named: "Player_List'logo"), for: .normal)
        btn.addTarget(self, action: #selector(listClick(_ :)), for: .touchUpInside)
        return btn
    }()
    //播放类型按钮（按顺序播放，随机播放，单曲循环）
    private lazy var typeBtn:UIButton = {
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "List_NormolPlay'logo"), for: .normal)
        btn.addTarget(self, action: #selector(typeClick(_ :)), for: .touchUpInside)
        return btn
    }()
    //下一首按钮
    private lazy var nextBtn:UIButton = {
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "Player_Next'logo"), for: .normal)
        btn.addTarget(self, action: #selector(nextClick(_ :)), for: .touchUpInside)
        return btn
    }()
    //上一首
    private lazy var perviousBtn:UIButton = {
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "Player_Pervious'logo"), for: .normal)
        btn.addTarget(self, action: #selector(previousClick(_ :)), for: .touchUpInside)
        return btn
    }()
    //活动加载器
    private lazy var activityIndicator:UIActivityIndicatorView = {
        let activityIndicator:UIActivityIndicatorView = .init(frame: .init(x: 0, y: 0, width: 66*width, height: 66*width))
        activityIndicator.style = .gray
        activityIndicator.backgroundColor = .white
        activityIndicator.layer.masksToBounds = true
        activityIndicator.layer.cornerRadius = 33*width
        activityIndicator.color = .black
        return activityIndicator
    }()
    //封面View(封面，标题，副标题，收藏，下载，进度条View)
    private lazy var coverView:MPPositive_PlayerCoverView = .init(frame: .init(x: 0, y: 0, width: screen_Width, height: 480*width))
    //歌词View
    private lazy var lyricsView:MPPositive_PlayerLyricView = .init(frame: .init(x: 0, y: 0, width: screen_Width, height: 480*width))
    var recommendBlock:(() -> Void)?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        //隐藏导航栏label
        setTitle("")
        configure()
        //打开时检索播放器状态，好调整内容
        MP_PlayerManager.shared.runActionBlock = { [weak self] (currentTime, duration) in
            guard let self = self else { return }
            DispatchQueue.main.async {
                //展示当前时间
                self.coverView.durationLabel.text = setTimesToMinSeconds(currentTime)
                //展示剩余时间
                let remain:TimeInterval = duration - currentTime
                self.coverView.maxTimesLabel.text = setTimesToMinSeconds(remain)
                //调整进度条内容
                let value = currentTime/duration
                self.coverView.sliderView.value = Float(value)
                
            }
        }
        //当缓存变化时
        MP_PlayerManager.shared.cacheValueBlock = { [weak self] (value, duration) in
            guard let self = self else { return }
            DispatchQueue.main.async {
                if value < duration {
                    //进度缓存中
                    let float = value/duration
                    self.coverView.progressView.setProgress(Float(float), animated: false)
                }else {
                    //进度缓存满了
                    self.coverView.progressView.setProgress(1, animated: false)
                }
            }
        }
        switchPlayBtnStatu(MP_PlayerManager.shared.getPlayState())
    }
    deinit {
        NotificationCenter.default.removeObserver(self)
    }
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        //添加监听
        NotificationCenter.notificationKey.add(observer: self, selector: #selector(playerReloadAction(_ :)), notificationName: .positive_player_reload)
        NotificationCenter.notificationKey.add(observer: self, selector: #selector(statusSwitchAction(_:)), notificationName: .switch_player_status)
        NotificationCenter.notificationKey.add(observer: self, selector: #selector(playerTypeSwitchAction(_:)), notificationName: .player_type_switch)
        NotificationCenter.notificationKey.add(observer: self, selector: #selector(deleteListAction(_:)), notificationName: .player_delete_list)
//        switchPlayBtnStatu(MP_PlayerManager.shared.getPlayState())
        //判断播放器是否装填数据
        if MP_PlayerManager.shared.loadPlayer?.currentVideo != nil {
            uploadUI()
        }
    }
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        NotificationCenter.default.removeObserver(self)
    }
    //视图配置
    private func configure() {
        //导航View内容配置
        navView.addSubview(leftPopBtn)
        leftPopBtn.snp.makeConstraints { make in
            make.width.height.equalTo(42*width)
            make.left.equalToSuperview().offset(16*width)
            make.centerY.equalToSuperview()
        }
        navView.addSubview(relatedBtn)
        relatedBtn.snp.makeConstraints { make in
            make.width.height.equalTo(24*width)
            make.right.equalToSuperview().offset(-16*width)
            make.centerY.equalToSuperview()
        }
        navView.addSubview(switchActionView)
        switchActionView.snp.makeConstraints { make in
            make.height.equalToSuperview()
            make.width.equalToSuperview().multipliedBy(0.45)
            make.center.equalToSuperview()
        }
        //背景内容配置
        view.addSubview(backImageView)
        backImageView.snp.makeConstraints { make in
            make.left.right.top.bottom.equalToSuperview()
        }
        view.addSubview(backBlurView)
        backBlurView.snp.makeConstraints { make in
            make.left.right.top.bottom.equalToSuperview()
        }
        let bottomImageView:UIImageView = .init(image: .init(named: "Player_Bottom'mask"))
        bottomImageView.contentMode = .scaleAspectFill
        bottomImageView.isUserInteractionEnabled = false
        view.addSubview(bottomImageView)
        bottomImageView.snp.makeConstraints { make in
            make.left.right.bottom.equalToSuperview()
            make.height.equalTo(286*width)
        }
        //底部容器配置
        let bottomView = createBottomView()
        view.addSubview(bottomView)
        bottomView.snp.makeConstraints { make in
            make.left.right.bottom.equalToSuperview()
            make.height.equalTo(200*width)
        }
        //配置封面和歌词
        view.addSubview(lyricsView)
        lyricsView.snp.makeConstraints { make in
            make.top.equalTo(navView.snp.bottom)
            make.left.right.equalToSuperview()
            make.height.equalTo(480*width)
        }
        lyricsView.isHidden = true
        view.addSubview(coverView)
        coverView.snp.makeConstraints { make in
            make.top.equalTo(navView.snp.bottom)
            make.left.right.equalToSuperview()
            make.height.equalTo(480*width)
        }
        coverView.isHidden = false
    }
    //生成一个单选按钮组View
    private func createSwitchActionView() -> UIView {
        let actionView:UIView = UIView()
        actionView.backgroundColor = .clear
        actionView.addSubview(songBtn)
        songBtn.snp.makeConstraints { make in
            make.centerY.equalToSuperview()
            make.centerX.equalToSuperview().multipliedBy(0.5)
        }
        actionView.addSubview(lyricsBtn)
        lyricsBtn.snp.makeConstraints { make in
            make.centerY.equalToSuperview()
            make.centerX.equalToSuperview().multipliedBy(1.5)
        }
        //生成间隔线View
        let lineView:UIView = .init()
        lineView.backgroundColor = .init(hex: "#FFFFFF", alpha: 0.45)
        actionView.addSubview(lineView)
        lineView.snp.makeConstraints { make in
            make.center.equalToSuperview()
            make.width.equalTo(1*width)
            make.height.equalTo(14*width)
        }
        //生成按钮
        return actionView
    }
    //生成页面状态按钮
    private func createStatueBtn(_ text:String = "text", color:UIColor, tag:Int) -> UIButton {
        let btn = UIButton()
        btn.setTitle(text, for: .normal)
        btn.setTitleColor(color, for: .normal)
        btn.titleLabel?.font = .systemFont(ofSize: 15, weight: .regular)
        btn.tag = tag
        btn.addTarget(self, action: #selector(switchActionClick(_ :)), for: .touchUpInside)
        return btn
    }
    //生成一个底部容器View
    private func createBottomView() -> UIView {
        let bottomView:UIView = .init()
        bottomView.backgroundColor = .clear
        bottomView.addSubview(playBtn)
        playBtn.snp.makeConstraints { make in
            make.width.height.equalTo(66*width)
            make.centerX.equalToSuperview()
            make.centerY.equalToSuperview().multipliedBy(1.1)
        }
        bottomView.addSubview(activityIndicator)
        activityIndicator.snp.makeConstraints { make in
            make.center.equalTo(playBtn)
            make.width.height.equalTo(playBtn)
        }
        let state = MP_PlayerManager.shared.getPlayState()
        switch state {
        case .Null:
            activityIndicator.isHidden = false
            activityIndicator.startAnimating()
        default:
            activityIndicator.isHidden = false
            activityIndicator.stopAnimating()
        }
        bottomView.addSubview(listBtn)
        listBtn.snp.makeConstraints { make in
            make.right.equalToSuperview().offset(-20*width)
            make.centerY.equalTo(playBtn)
            make.width.height.equalTo(24*width)
        }
        bottomView.addSubview(typeBtn)
        typeBtn.snp.makeConstraints { make in
            make.left.equalToSuperview().offset(20*width)
            make.centerY.equalTo(playBtn)
            make.width.height.equalTo(24*width)
        }
        bottomView.addSubview(nextBtn)
        nextBtn.snp.makeConstraints { make in
            make.width.height.equalTo(30*width)
            make.centerY.equalTo(playBtn.snp.centerY)
            make.right.equalToSuperview().offset(-98*width)
        }
        bottomView.addSubview(perviousBtn)
        perviousBtn.snp.makeConstraints { make in
            make.width.height.equalTo(30*width)
            make.centerY.equalTo(playBtn.snp.centerY)
            make.left.equalToSuperview().offset(98*width)
        }
        return bottomView
    }
    //MARK: - 页面渲染
    private func uploadUI() {
        DispatchQueue.main.async {
            [weak self] in
            guard let self = self, MP_PlayerManager.shared.loadPlayer?.currentVideo != nil else {return}
            print("\(MP_PlayerManager.shared.loadPlayer?.currentVideo?.title ?? "")刷新了页面")
            //填充数据
            backImageView.kf.setImage(with: MP_PlayerManager.shared.loadPlayer.currentVideo?.coverUrl, placeholder: placeholderImage)
            coverView.coverImageView.kf.setImage(with: MP_PlayerManager.shared.loadPlayer.currentVideo?.coverUrl, placeholder: placeholderImage)
            coverView.titleLabel.text = MP_PlayerManager.shared.loadPlayer.currentVideo?.title
            coverView.subtitleLabel.text = MP_PlayerManager.shared.loadPlayer.currentVideo?.subtitle
            lyricsView.titleLabel.text = MP_PlayerManager.shared.loadPlayer.currentVideo?.title
            lyricsView.subtitleLabel.text = MP_PlayerManager.shared.loadPlayer.currentVideo?.subtitle
            lyricsView.lyricsLabel.text = (MP_PlayerManager.shared.loadPlayer.currentVideo?.lyrics ?? "").isEmpty == true ? "No Lyrics":MP_PlayerManager.shared.loadPlayer.currentVideo?.lyrics
            coverView.downloadButton.state = (MPPositive_DownloadItemModel.fetch(.init(format: "videoId == %@", MP_PlayerManager.shared.loadPlayer.currentVideo?.song.videoId ?? "")).count != 0) ? .downloaded:.startDownload
            coverView.downloadButton.isUserInteractionEnabled = !(MP_PlayerManager.shared.loadPlayer.currentVideo?.isDlownd ?? false)
            coverView.collectionSongBtn.isSelected = MP_PlayerManager.shared.loadPlayer.currentVideo?.isCollection ?? false
            coverView.restoreDownloadProgress()
            switchPlayTypeBtnIcon(typeBtn)
//            activityIndicator.isHidden = true
//            activityIndicator.stopAnimating()
        }
    }
    //MARK: - 通知
    //播放器音乐刷新
    @objc private func playerReloadAction(_ sender:Notification) {
        //渲染页面
        DispatchQueue.main.async {
            [weak self] in
            guard let self = self else {return}
            uploadUI()
            //回正进度条
            coverView.sliderView.value = 0
            //调整时间值
            coverView.durationLabel.text = setTimesToMinSeconds(0)
            //调整最大时间值
            coverView.maxTimesLabel.text = setTimesToMinSeconds(0)
            //开始播放
            MP_PlayerManager.shared.play { [weak self] in
                guard let self = self else { return }
                //允许playBtn按钮交互
                playBtn.isUserInteractionEnabled = true
            }
        }
    }
    //切换播放器状态时
    @objc private func statusSwitchAction(_ sender:Notification) {
        guard let object = sender.object else {return}
        DispatchQueue.main.async {
            [weak self] in
            guard let self = self else {return}
            let state:MP_PlayerStateType = sender.object as! MP_PlayerStateType
            DispatchQueue.main.async {
                [weak self] in
                self?.switchPlayBtnStatu(state)
            }
        }
    }
    private func switchPlayBtnStatu(_ state:MP_PlayerStateType) {
        switch state {
        case .Playing:
            playBtn.isSelected = true
            activityIndicator.isHidden = true
            activityIndicator.stopAnimating()
        case .Pause:
            playBtn.isSelected = false
            activityIndicator.isHidden = true
            activityIndicator.stopAnimating()
        default:
            playBtn.isSelected = false
            activityIndicator.isHidden = false
            activityIndicator.startAnimating()
        }
    }
    //切换播放器播放方式
    @objc private func playerTypeSwitchAction(_ sender:Notification) {
        DispatchQueue.main.async {
            [weak self] in
            guard let self = self else {return}
            switchPlayTypeBtnIcon(typeBtn)
        }
    }
    //用户清空了歌单列表
    @objc private func deleteListAction(_ sender:Notification) {
        DispatchQueue.main.async {
            [weak self] in
            guard let self = self else {return}
            dismiss(animated: true)
        }
    }
    //MARK: - 点击事件
    //向下dismiss
    @objc private func disMissClick(_ sender:UIButton) {
        dismiss(animated: true)
    }
    //切换页面显示内容（单曲封面|歌词）按钮组
    @objc private func switchActionClick(_ sender:UIButton) {
        guard MP_NetWorkManager.shared.netWorkStatu == .reachable else {
            MP_HUD.text("Weak connection.", delay: 2.0, completion: nil)
            return
        }
        topShowType = .init(rawValue: sender.tag)!
    }
    //切换动画
    private func setSwitchAnimation(_ sender: PlayerShowType) {
        //切换时，禁止segmentedView交互
        switchActionView.isUserInteractionEnabled = false
        switch sender {
        case .showCover://展示封面
            UIView.animate(withDuration: 0.4) {
                [weak self] in
                guard let self = self else {return}
                //展示封面
                coverView.alpha = 1.0
                coverView.isHidden = false
                //lyricView隐藏
                lyricsView.alpha = 0.1
                songBtn.setTitleColor(.init(hex: "#FFFFFF", alpha: 0.85), for: .normal)
                lyricsBtn.setTitleColor(.init(hex: "#FFFFFF", alpha: 0.45), for: .normal)
            } completion: { [weak self] (_) in
                guard let self = self else {return}
                //平移结束后，隐藏lyricListView
                lyricsView.isHidden = true
                //完成状况允许交互
                switchActionView.isUserInteractionEnabled = true
            }
        case .showLyric://展示歌词
            UIView.animate(withDuration: 0.4) {
                [weak self] in
                guard let self = self else {return}
                //展示歌词
                lyricsView.alpha = 1.0
                lyricsView.isHidden = false
                //coverView向左平移一个屏幕尺度
                coverView.alpha = 0.1
                songBtn.setTitleColor(.init(hex: "#FFFFFF", alpha: 0.45), for: .normal)
                lyricsBtn.setTitleColor(.init(hex: "#FFFFFF", alpha: 0.85), for: .normal)
            } completion: { [weak self] (_) in
                guard let self = self else {return}
                //平移结束后，隐藏coverView
                coverView.isHidden = true
                //完成状况允许交互
                switchActionView.isUserInteractionEnabled = true
            }
        }
    }
    //弹出关联内容
    @objc private func relatedContentClick(_ sender:UIButton) {
        guard MP_NetWorkManager.shared.netWorkStatu == .reachable else {
            MP_HUD.text("Weak connection.", delay: 2.0, completion: nil)
            return
        }
        guard MP_PlayerManager.shared.loadPlayer?.currentVideo?.song.relatedID != nil else {return}
        //先dismiss
        if recommendBlock != nil {
            recommendBlock!()
        }
        dismiss(animated: true)
    }
    
    //播放/暂停/继续
    @objc private func playClick(_ sender:UIButton) {
//        guard MP_NetWorkManager.shared.netWorkStatu == .reachable else {
//            MP_HUD.text("Weak connection.", delay: 2.0, completion: nil)
//            return
//        }
        guard MP_PlayerManager.shared.loadPlayer != nil else {
            return
        }
        //在当前音乐填充好之前，禁止触发点击
        switch MP_PlayerManager.shared.getPlayState() {
        case .Null:
            //启动播放
            MP_PlayerManager.shared.play { [weak self] in
                guard let self = self else { return }
                //回正进度条
                coverView.sliderView.value = 0
            }
        case .Playing:
            //播放中，进入暂停
            MP_PlayerManager.shared.pause {
                [weak self] in
            }
        case .Pause:
            //暂停中，进入继续
            MP_PlayerManager.shared.resume {
                [weak self] in
            }
        }
    }
    //展示列表
    @objc private func listClick(_ sender:UIButton) {
//        guard MP_NetWorkManager.shared.netWorkStatu == .reachable else {
//            MP_HUD.text("Weak connection.", delay: 2.0, completion: nil)
//            return
//        }
        if MP_PlayerManager.shared.loadPlayer != nil {
            
            MPPositive_ModalType = .PlayerList
            let listVC = MPPositive_PlayerListShowViewController()
            listVC.transitioningDelegate = self
            listVC.modalPresentationStyle = .custom
            present(listVC, animated: true)
        }
    }
    func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
        return MPPositive_PresentationController(presentedViewController: presented, presenting: presenting)
    }
    //切换播放器状态（按顺序/随机/单曲）
    @objc private func typeClick(_ sender:UIButton) {
//        guard MP_NetWorkManager.shared.netWorkStatu == .reachable else {
//            MP_HUD.text("Weak connection.", delay: 2.0, completion: nil)
//            return
//        }
        MPPositive_Debouncer.shared.call {
            [weak self] in
            guard let self = self else {return}
            //对播放器播放方式截形切换
            var value = MP_PlayerManager.shared.getPlayType().rawValue
            value += 1
            if value > 2 {
                value = 0
            }
            MP_PlayerManager.shared.setPlayType(.init(rawValue: value)!)
        }
    }
    //下一首
    @objc private func nextClick(_ sender:UIButton) {
//        guard MP_NetWorkManager.shared.netWorkStatu == .reachable else {
//            MP_HUD.text("Weak connection.", delay: 2.0, completion: nil)
//            return
//        }
        guard MP_PlayerManager.shared.loadPlayer?.currentVideo != nil else {
            return
        }
        //切歌广告
        if MP_NetWorkManager.shared.netWorkStatu == .reachable {
            MP_AdMobManager.shared.showPlayInterstitialAdIfAvailable(.Switch, completion: nil)
        }
        MPPositive_Debouncer.shared.call {
            [weak self] in
            guard let self = self else {return}
            coverView.sliderView.value = 0
            MP_PlayerManager.shared.nextEvent()
        }
        
    }
    //上一首
    @objc private func previousClick(_ sender:UIButton) {
//        guard MP_NetWorkManager.shared.netWorkStatu == .reachable else {
//            MP_HUD.text("Weak connection.", delay: 2.0, completion: nil)
//            return
//        }
        guard MP_PlayerManager.shared.loadPlayer?.currentVideo != nil else {
            return
        }
        //切歌广告
        if MP_NetWorkManager.shared.netWorkStatu == .reachable {
            MP_AdMobManager.shared.showPlayInterstitialAdIfAvailable(.Switch, completion: nil)
        }
        MPPositive_Debouncer.shared.call {
            [weak self] in
            guard let self = self else {return}
            coverView.sliderView.value = 0
            MP_PlayerManager.shared.previousEvent()
        }
    }
    
}