//
//  SCVodVideoPlayerViewController.m
//  SellyCloudSDK_Example
//
//  Created by Caleb on 1/7/26.
//  Copyright © 2026 Caleb. All rights reserved.
//

#import "SCVodVideoPlayerViewController.h"
#import "SCPlayerConfigView.h"
#import "AVLiveStreamModel.h"
#import "AVConstants.h"
#import <SellyCloudSDK/SellyCloudManager.h>
#import <Masonry/Masonry.h>
#import "SCLiveItemContainerView.h"
#import <Photos/Photos.h>
#import "SCPlayerDebugView.h"

@interface SCVodVideoPlayerViewController ()<SellyVodPlayerDelegate>
@property (nonatomic, strong) SellyVodVideoPlayer *player;
@property (nonatomic, strong) UIView *playerContainerView;
@property (nonatomic, strong) SCLiveItemContainerView *containerView;
@property (nonatomic, strong) SCPlayerConfig *currentConfig;
@property (nonatomic, strong) UIButton *closeButton;
@property (nonatomic, strong) SCPlayerDebugView *debugView;

// 进度条相关
@property (nonatomic, strong) UIView *progressContainerView;
@property (nonatomic, strong) UISlider *progressSlider;
@property (nonatomic, strong) UILabel *currentTimeLabel;
@property (nonatomic, strong) UILabel *totalTimeLabel;
@property (nonatomic, assign) BOOL isDraggingProgress;  // 标记用户是否正在拖动进度条

// 保存按钮 model 的引用，用于更新状态
@property (nonatomic, strong) SCLiveItemModel *playPauseModel;
@property (nonatomic, strong) SCLiveItemModel *muteModel;
@property (nonatomic, strong) AVLiveStreamModel *streamModel;

@end

@implementation SCVodVideoPlayerViewController

- (instancetype)initWithLiveStream:(AVLiveStreamModel *)stream {
    self = [super init];
    self.streamModel = stream;
    [self convertStreamModelToPlayerConfig:stream];
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = UIColor.blackColor;
    
    // 隐藏导航栏
    self.navigationController.navigationBarHidden = YES;
    
    // 添加播放器容器
    [self.view addSubview:self.playerContainerView];
    [self.playerContainerView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.view);
    }];
    
    // 添加关闭按钮（右上角）
    [self setupCloseButton];
    
    // 添加调试视图（右上角，关闭按钮下方）
    [self setupDebugView];
    
    // 添加控制按钮容器
    [self.view addSubview:self.containerView];
    [self.containerView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.offset(0);
        make.bottom.offset(-48);
        make.height.offset(100);
    }];
    
    // 添加播放进度条（在 containerView 之后添加，这样可以引用它）
    [self setupProgressView];
    
    // 禁止息屏
    [UIApplication sharedApplication].idleTimerDisabled = YES;
    
    [self startPlayWithConfig:self.currentConfig];
}

- (void)convertStreamModelToPlayerConfig:(AVLiveStreamModel *)stream {
    if (!stream) {
        NSLog(@"❌ stream model is nil");
        return;
    }
    
    // 创建 SCPlayerConfig
    SCPlayerConfig *config = [[SCPlayerConfig alloc] init];
    config.streamId = stream.stream;
    
    // 根据 playProtocol 字符串设置协议类型
    NSString *protocol = stream.play_protocol.lowercaseString;
    if ([protocol isEqualToString:@"rtc"] || [protocol isEqualToString:@"webrtc"]) {
        config.protocol = SellyLiveMode_RTC;
    } else if ([protocol isEqualToString:@"rtmp"]) {
        config.protocol = SellyLiveMode_RTMP;
    } else {
        // 默认使用 RTMP（flv、hls 等也使用 RTMP 模式）
        config.protocol = SellyLiveMode_RTMP;
    }
    
    NSLog(@"🔄 转换 StreamModel -> PlayerConfig: stream=%@, protocol=%@ (%@)",
          config.streamId,
          stream.play_protocol,
          config.protocol == SellyLiveMode_RTC ? @"RTC" : @"RTMP");
    
    // 保存配置并开始播放
    self.currentConfig = config;
}

- (void)setupCloseButton {
    _closeButton = [UIButton buttonWithType:UIButtonTypeSystem];
    [_closeButton setImage:[UIImage systemImageNamed:@"xmark.circle.fill"] forState:UIControlStateNormal];
    _closeButton.tintColor = [UIColor whiteColor];
    [_closeButton addTarget:self action:@selector(closeButtonTapped) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_closeButton];
    [_closeButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.offset(-16);
        make.top.offset(50);
        make.width.height.offset(44);
    }];
}

- (void)setupDebugView {
    _debugView = [[SCPlayerDebugView alloc] init];
    [self.view addSubview:_debugView];
    [_debugView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.offset(-16);
        make.top.equalTo(self.closeButton.mas_bottom).offset(16);
        make.width.offset(300);
    }];
    
    // 添加初始日志
    [_debugView appendLog:@"调试器已初始化" withPrefix:@"✅"];
    [_debugView appendLog:@"VOD 点播播放器" withPrefix:@"🎬"];
}

- (void)setupProgressView {
    // 创建进度条容器
    _progressContainerView = [[UIView alloc] init];
    _progressContainerView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.5];
    [self.view addSubview:_progressContainerView];
    
    [_progressContainerView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.offset(0);
        make.bottom.equalTo(self.containerView.mas_top).offset(-10);
        make.height.offset(50);
    }];
    
    // 当前时间标签
    _currentTimeLabel = [[UILabel alloc] init];
    _currentTimeLabel.textColor = [UIColor whiteColor];
    _currentTimeLabel.font = [UIFont systemFontOfSize:12];
    _currentTimeLabel.text = @"00:00";
    [_progressContainerView addSubview:_currentTimeLabel];
    
    [_currentTimeLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.offset(16);
        make.centerY.offset(0);
        make.width.offset(45);
    }];
    
    // 总时长标签
    _totalTimeLabel = [[UILabel alloc] init];
    _totalTimeLabel.textColor = [UIColor whiteColor];
    _totalTimeLabel.font = [UIFont systemFontOfSize:12];
    _totalTimeLabel.text = @"00:00";
    _totalTimeLabel.textAlignment = NSTextAlignmentRight;
    [_progressContainerView addSubview:_totalTimeLabel];
    
    [_totalTimeLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.offset(-16);
        make.centerY.offset(0);
        make.width.offset(45);
    }];
    
    // 进度条
    _progressSlider = [[UISlider alloc] init];
    _progressSlider.minimumValue = 0;
    _progressSlider.maximumValue = 1;
    _progressSlider.value = 0;
    _progressSlider.minimumTrackTintColor = [UIColor systemBlueColor];
    _progressSlider.maximumTrackTintColor = [[UIColor whiteColor] colorWithAlphaComponent:0.3];
    
    // 添加拖动事件
    [_progressSlider addTarget:self action:@selector(progressSliderTouchDown:) forControlEvents:UIControlEventTouchDown];
    [_progressSlider addTarget:self action:@selector(progressSliderValueChanged:) forControlEvents:UIControlEventValueChanged];
    [_progressSlider addTarget:self action:@selector(progressSliderTouchUpInside:) forControlEvents:UIControlEventTouchUpInside];
    [_progressSlider addTarget:self action:@selector(progressSliderTouchUpOutside:) forControlEvents:UIControlEventTouchUpOutside];
    
    [_progressContainerView addSubview:_progressSlider];
    
    [_progressSlider mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.currentTimeLabel.mas_right).offset(8);
        make.right.equalTo(self.totalTimeLabel.mas_left).offset(-8);
        make.centerY.offset(0);
    }];
}

- (void)closeButtonTapped {
    // 停止播放
    if (self.player) {
        [self.player stop];
    }
    
    // 恢复导航栏
    self.navigationController.navigationBarHidden = NO;
    
    // 返回上一页
    [self.navigationController popViewControllerAnimated:YES];
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    [self.view bringSubviewToFront:self.progressContainerView];
    [self.view bringSubviewToFront:self.containerView];
    [self.view bringSubviewToFront:self.debugView];
    [self.view bringSubviewToFront:self.closeButton];
}

- (void)showConfigView {
    SCPlayerConfigView *configView = [[SCPlayerConfigView alloc] init];
    __weak typeof(self) weakSelf = self;
    [configView showInViewController:self callback:^(SCPlayerConfig *config) {
        weakSelf.currentConfig = config;
        [weakSelf startPlayWithConfig:config];
    }];
    
    // 配置视图现在添加到 self.view 上，确保关闭按钮在最上层
    [self.view bringSubviewToFront:self.closeButton];
}

- (void)startPlayWithConfig:(SCPlayerConfig *)config {
    // 如果已经有播放器在运行，先停止
    if (self.player) {
        [self.player stop];
        [self.player setRenderView:nil];
        self.player = nil;
    }
    self.currentConfig = config;

    SellyVodVideoPlayer *player = [[SellyVodVideoPlayer alloc] init];
    player.delegate = self;
    player.scaleMode = SellyPlayerScalingModeAspectFit;
    player.shouldAutoplay = YES;
    [player setRenderView:self.playerContainerView];
    
    // 确保初始音量为正常状态（未静音）
    if (player.playbackVolume == 0) {
        player.playbackVolume = 1.0;
    }
    self.player = player;
    
    [self.debugView appendLog:[NSString stringWithFormat:@"初始化播放器: streamId=%@", config.streamId] withPrefix:@"🎬"];
    [self.debugView appendLog:@"自动播放: YES" withPrefix:@"⚙️"];
    
    [self startPlay];
    
    // 设置控制按钮
    [self setupControlButtons];
}

- (void)startPlay {
    // 判断是 URL 还是 streamId
    SCPlayerConfig *config = self.currentConfig;
    if ([config.streamId hasPrefix:@"rtmp://"] ||
        [config.streamId hasPrefix:@"http://"] ||
        [config.streamId hasPrefix:@"https://"]) {
        // 完整 URL
        [self.debugView appendLog:[NSString stringWithFormat:@"开始播放 URL: %@", config.streamId] withPrefix:@"▶️"];
        [self.player startPlayUrl:config.streamId];
    } else {
        [self.debugView appendLog:@"无效的播放地址" withPrefix:@"⚠️"];
    }
}

- (void)setupControlButtons {
    __weak typeof(self) weakSelf = self;
    NSMutableArray *items = NSMutableArray.new;
    
    {
        SCLiveItemModel *model = SCLiveItemModel.new;
        model.type = SCLiveItemTypePlayPause;
        model.title = @"播放/暂停";
        model.isSelected = NO;
        model.clickCallback = ^{
            if (weakSelf.player.isPlaying) {
                [weakSelf pause];
            } else {
                [weakSelf start];
            }
            [weakSelf updatePlayPauseButtonState];
        };
        self.playPauseModel = model;
        [items addObject:model];
    }
    {
        SCLiveItemModel *model = SCLiveItemModel.new;
        model.type = SCLiveItemTypeVolume;
        model.title = @"静音";
        
        // 获取当前音量状态
        CGFloat currentVolume = self.player.playbackVolume;
        model.isSelected = (currentVolume == 0);
        
        NSLog(@"📢 静音按钮初始化 - 当前音量: %.2f, isSelected: %d", currentVolume, model.isSelected);
        
        model.clickCallback = ^{
            weakSelf.player.playbackVolume = 1 - weakSelf.player.playbackVolume;
            NSLog(@"📢 点击静音按钮 - 新音量: %.2f", weakSelf.player.playbackVolume);
            [weakSelf updateMuteButtonState];
        };
        self.muteModel = model;
        [items addObject:model];
    }
    {
        SCLiveItemModel *model = SCLiveItemModel.new;
        model.type = SCLiveItemTypeScreenshot;
        model.title = @"截图";
        model.clickCallback = ^{
            UIImage *screenshot = weakSelf.player.getCurrentImage;
            if (screenshot) {
                [weakSelf.debugView appendLog:@"截图成功，正在保存..." withPrefix:@"📸"];
            } else {
                [weakSelf.debugView appendLog:@"截图失败：无图像" withPrefix:@"⚠️"];
            }
            [weakSelf saveCurrentFrameToPhotoAlbum:screenshot];
        };
        [items addObject:model];
    }
    {
        SCLiveItemModel *model = SCLiveItemModel.new;
        model.type = SCLiveItemTypeSeekForward;
        model.title = @"快进10秒";
        model.clickCallback = ^{
            // 快进10秒
            NSTimeInterval currentTime = weakSelf.player.currentPlaybackTime;
            NSTimeInterval duration = weakSelf.player.duration;
            NSTimeInterval newTime = currentTime + 10.0;
            
            // 确保不超过视频时长
            if (duration > 0 && newTime > duration) {
                newTime = duration;
            }
            
            weakSelf.player.currentPlaybackTime = newTime;
            NSLog(@"⏩ 快进 - 从 %.2f 秒到 %.2f 秒", currentTime, newTime);
            [weakSelf.debugView appendLog:[NSString stringWithFormat:@"快进: %.2fs → %.2fs (总时长: %.2fs)", 
                                          currentTime, newTime, duration] withPrefix:@"⏩"];
        };
        [items addObject:model];
    }
    
    self.containerView.models = items;
    [self updatePlayPauseButtonState];
}

- (void)updatePlayPauseButtonState {
    self.playPauseModel.isSelected = self.player.isPlaying;
    // 刷新 UI
    self.containerView.models = self.containerView.models;
}

- (void)updateMuteButtonState {
    self.muteModel.isSelected = (self.player.playbackVolume == 0);
    // 刷新 UI
    self.containerView.models = self.containerView.models;
}

#pragma mark - Player Control

- (NSString *)stringFromPlayerState:(SellyPlayerState)state {
    switch (state) {
        case SellyPlayerStateIdle:
            return @"空闲 (Idle)";
        case SellyPlayerStateConnecting:
            return @"连接中 (Connecting)";
        case SellyPlayerStatePlaying:
            return @"播放中 (Playing)";
        case SellyPlayerStatePaused:
            return @"暂停 (Paused)";
        case SellyPlayerStateStoppedOrEnded:
            return @"已停止/结束 (Stopped/Ended)";
        case SellyPlayerStateFailed:
            return @"失败 (Failed)";
        default:
            return [NSString stringWithFormat:@"未知状态 (%ld)", (long)state];
    }
}

- (void)start {
    [self.debugView appendLog:@"恢复播放" withPrefix:@"▶️"];
    [self.player resume];
}

- (void)pause {
    [self.debugView appendLog:@"暂停播放" withPrefix:@"⏸️"];
    [self.player pause];
}

#pragma mark - Progress Control

- (NSString *)formatTime:(NSTimeInterval)timeInterval {
    NSInteger totalSeconds = (NSInteger)timeInterval;
    NSInteger hours = totalSeconds / 3600;
    NSInteger minutes = (totalSeconds % 3600) / 60;
    NSInteger seconds = totalSeconds % 60;
    
    if (hours > 0) {
        return [NSString stringWithFormat:@"%02ld:%02ld:%02ld", (long)hours, (long)minutes, (long)seconds];
    } else {
        return [NSString stringWithFormat:@"%02ld:%02ld", (long)minutes, (long)seconds];
    }
}

- (void)progressSliderTouchDown:(UISlider *)slider {
    self.isDraggingProgress = YES;
    [self.debugView appendLog:@"开始拖动进度条" withPrefix:@"👆"];
}

- (void)progressSliderValueChanged:(UISlider *)slider {
    if (self.isDraggingProgress) {
        // 更新当前时间标签显示
        self.currentTimeLabel.text = [self formatTime:slider.value];
    }
}

- (void)progressSliderTouchUpInside:(UISlider *)slider {
    [self seekToTime:slider.value];
}

- (void)progressSliderTouchUpOutside:(UISlider *)slider {
    [self seekToTime:slider.value];
}

- (void)seekToTime:(NSTimeInterval)time {
    self.isDraggingProgress = NO;
    
    if (self.player) {
        self.player.currentPlaybackTime = time;
        [self.debugView appendLog:[NSString stringWithFormat:@"跳转到: %@", [self formatTime:time]] withPrefix:@"⏭️"];
    }
}

#pragma mark - SellyPlayerManagerDelegate

- (void)player:(SellyVodVideoPlayer *)player prepareToPlayChanged:(BOOL)prepare {
    NSLog(@"Player prepare changed: %d", prepare);
    [self.debugView appendLog:[NSString stringWithFormat:@"prepareToPlayChanged: %@", prepare ? @"YES" : @"NO"] withPrefix:@"🔧"];
}

- (void)player:(SellyVodVideoPlayer *)player playbackDidFinished:(NSDictionary *)resultInfo {
    NSLog(@"Playback finished: %@", resultInfo);
    [self.debugView appendLog:@"播放已结束" withPrefix:@"⏹️"];
}

- (void)player:(SellyVodVideoPlayer *)player playbackStateChanged:(SellyPlayerState)state {
    NSString *stateString = [self stringFromPlayerState:state];
    NSLog(@"🎬 播放状态变更: %@ (rawValue: %ld)", stateString, (long)state);
    
    // 添加到调试器
    [self.debugView appendLog:[NSString stringWithFormat:@"状态变更: %@", stateString] withPrefix:@"🎬"];
    
    // 更新播放/暂停按钮状态
    [self updatePlayPauseButtonState];
    
    // 注意：不再需要手动管理进度条定时器
    // 播放器内部的定时器会自动处理，并通过 playbackProgressChanged 回调通知
}

- (void)player:(SellyVodVideoPlayer *)player onError:(NSError *)error {
    NSLog(@"Player error: %@", error.localizedDescription);
    
    // 添加到调试器
    [self.debugView appendLog:[NSString stringWithFormat:@"错误: %@", error.localizedDescription] withPrefix:@"🔴"];
    
    // 显示错误提示
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"播放错误"
                                                                   message:error.localizedDescription
                                                            preferredStyle:UIAlertControllerStyleAlert];
    [alert addAction:[UIAlertAction actionWithTitle:@"重试" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
        // 如果有 streamModel 就重新播放，否则显示配置界面
        if (self.currentConfig) {
            [self startPlayWithConfig:self.currentConfig];
        } else {
            [self showConfigView];
        }
    }]];
    [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
        [self closeButtonTapped];
    }]];
    [self presentViewController:alert animated:YES completion:nil];
}

- (void)player:(SellyVodVideoPlayer *)player firstRemoteVideoFrame:(NSInteger)elapse {
    NSLog(@"###视频首帧加载耗时 == %ldms",elapse);
    [self.debugView appendLog:[NSString stringWithFormat:@"视频首帧: %ldms", elapse] withPrefix:@"📹"];
    
    self.progressSlider.maximumValue = self.player.duration;
    self.totalTimeLabel.text = [self formatTime:self.player.duration];
}

- (void)player:(SellyVodVideoPlayer *)player firstRemoteAudioFrame:(NSInteger)elapse {
    NSLog(@"###语音首帧加载耗时 == %ldms",elapse);
    [self.debugView appendLog:[NSString stringWithFormat:@"音频首帧: %ldms", elapse] withPrefix:@"🔊"];
}

- (void)player:(SellyVodVideoPlayer *)player 
playbackProgressChanged:(NSTimeInterval)currentTime {
    // 播放进度回调（每秒触发一次）
    // 注意：暂停时 currentTime 保持不变，仍会继续回调
    
    if (self.isDraggingProgress) {
        // 用户正在拖动进度条时，不更新界面
        return;
    }
    
    // 获取总时长（只需要一次性获取）
    NSTimeInterval duration = self.player.duration;
    
    // 更新进度条和时间标签
    if (duration > 0) {
        self.progressSlider.value = currentTime;
        self.currentTimeLabel.text = [self formatTime:currentTime];
    }
    
    // 可选：打印日志（建议只在需要调试时打开）
    // NSLog(@"⏱️ 播放进度: %.2f / %.2f 秒 (%.1f%%)", currentTime, duration, (currentTime/duration)*100);
}

- (void)player:(SellyVodVideoPlayer *)player 
bufferProgressChanged:(NSTimeInterval)playableDuration {
    // 缓冲进度回调（缓冲进度变化时触发）
    // 即使在暂停状态，缓冲也可能继续进行
    
    // 获取总时长（只需要一次性获取）
    NSTimeInterval duration = self.player.duration;
    
    if (duration > 0) {
        CGFloat bufferProgress = playableDuration / duration;
        
        // 可选：如果有缓冲进度条的话，可以在这里更新
        // self.bufferProgressView.progress = bufferProgress;
        
//        NSLog(@"📶 缓冲进度: %.2f / %.2f 秒 (%.1f%%)", playableDuration, duration, bufferProgress * 100);
    }
}

#pragma mark - Screenshot

- (void)saveCurrentFrameToPhotoAlbum:(UIImage *)image {
    if (!image) {
        NSLog(@"当前没有图像可保存");
        return;
    }

    // 检查权限
    PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
    if (status == PHAuthorizationStatusDenied || status == PHAuthorizationStatusRestricted) {
        NSLog(@"无权限访问相册，请到设置中开启权限");
        return;
    }

    if (status == PHAuthorizationStatusNotDetermined) {
        [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus newStatus) {
            if (newStatus == PHAuthorizationStatusAuthorized) {
                [self saveImage:image];
            }
        }];
    } else {
        [self saveImage:image];
    }
}

- (void)saveImage:(UIImage *)image {
    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
}

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
    if (error) {
        NSLog(@"保存失败：%@", error.localizedDescription);
        [self.debugView appendLog:[NSString stringWithFormat:@"保存失败: %@", error.localizedDescription] withPrefix:@"🔴"];
    } else {
        NSLog(@"已保存当前视频帧至相册");
        [self.debugView appendLog:@"已保存至相册" withPrefix:@"✅"];
    }
}

#pragma mark - Lazy Loading

- (UIView *)playerContainerView {
    if (!_playerContainerView) {
        _playerContainerView = [[UIView alloc] init];
        _playerContainerView.backgroundColor = [UIColor blackColor];
    }
    return _playerContainerView;
}

- (SCLiveItemContainerView *)containerView {
    if (!_containerView) {
        _containerView = [[SCLiveItemContainerView alloc] init];
    }
    return _containerView;
}

#pragma mark - Lifecycle

- (void)dealloc {
    // 不再需要手动停止定时器，播放器会自动管理
    [UIApplication sharedApplication].idleTimerDisabled = NO;
    NSLog(@"###%@ dealloc", NSStringFromClass(self.class));
}

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    
    // 恢复导航栏
    self.navigationController.navigationBarHidden = NO;
}

@end