//
//  JXSuperPlayer.m
//  AICity
//
//  Created by TogetherWatch on 2025-10-20.
//

#import "JXSuperPlayer.h"
#import <TXLiteAVSDK_Player/TXLiteAVSDK.h>

@interface JXSuperPlayer () <TXVodPlayListener>

@property (nonatomic, strong) TXVodPlayer *vodPlayer;
@property (nonatomic, strong) UIView *containerView;
@property (nonatomic, strong) UIView *playerView;
@property (nonatomic, assign) JXSuperPlayerState state;
@property (nonatomic, strong) NSTimer *progressTimer;

// 重试相关
@property (nonatomic, assign) NSInteger retryCount;
@property (nonatomic, assign) NSInteger maxRetryCount;
@property (nonatomic, strong) NSDictionary *lastPlayParams;
@property (nonatomic, assign) BOOL isRetrying;

// 私有方法声明
- (void)updateState:(JXSuperPlayerState)state;
- (void)notifyError:(NSError *)error;
- (void)startProgressTimer;
- (void)stopProgressTimer;
- (void)updateProgress;
- (void)handlePlayError:(NSError *)error;
- (void)internalPlayWithParams:(NSDictionary *)params;

@end

@implementation JXSuperPlayer

#pragma mark - 初始化

- (instancetype)initWithContainerView:(UIView *)containerView {
    self = [super init];
    if (self) {
        _containerView = containerView;
        _state = JXSuperPlayerStateIdle;
        _maxRetryCount = 2; // 最多重试2次
        _retryCount = 0;
        _isRetrying = NO;

        [self setupPlayer];
    }
    return self;
}

- (void)setupPlayer {
    // 创建播放器实例
    self.vodPlayer = [[TXVodPlayer alloc] init];
    // 设置播放器代理
    self.vodPlayer.vodDelegate = self;
    
    // 创建播放器视图
    self.playerView = [[UIView alloc] initWithFrame:self.containerView.bounds];
    self.playerView.backgroundColor = [UIColor blackColor];
    [self.containerView addSubview:self.playerView];
    
    // 设置渲染视图
    [self.vodPlayer setupVideoWidget:self.playerView insertIndex:0];
    
    // 配置播放器
    [self configurePlayer];
    
    NSLog(@"[JXSuperPlayer] 播放器初始化完成");
}

- (void)configurePlayer {
    // 设置腾讯云SDK日志级别，显示所有级别日志
    [TXLiveBase setLogLevel:LOGLEVEL_NULL];

    // 注意：TXVodPlayer没有setLogLevel方法，日志级别通过TXLiveBase全局设置

    // 注意：TXVodPlayer没有setConfig:forKey:方法，TPPlayer日志通过环境变量控制

    // 配置点播播放器
    TXVodPlayConfig *config = [[TXVodPlayConfig alloc] init];

    // 缓存配置
    config.maxCacheItems = 5;
    config.maxBufferSize = 50;  // MB

    // 首帧优化
    config.preferredResolution = 720 * 1280;

    // 进度更新间隔（毫秒）
    config.progressInterval = 500;

    // 设置网络超时和缓冲配置
    config.timeout = 60.0f;  // 60秒超时（更长的超时时间）
    config.maxBufferSize = 100;  // 100MB缓冲区
    config.maxPreloadSize = 50;  // 50MB预加载
    config.maxCacheItems = 10;    // 最大缓存项目数
    config.smoothSwitchBitrate = YES;  // 码率切换平滑过渡

    [self.vodPlayer setConfig:config];

    // 设置渲染模式（铺满）
    [self.vodPlayer setRenderMode:RENDER_MODE_FILL_SCREEN];
    
    // 注意：TXVodPlayer的控制栏UI是内置的，可以通过手势隐藏
    // 在setupVideoWidget时已自动集成
}

#pragma mark - 播放控制

- (void)playWithAppId:(NSString *)appId
               fileId:(NSString *)fileId
                psign:(NSString *)psign {

    // 重置重试计数（如果不是重试）
    if (!self.isRetrying) {
        self.retryCount = 0;
        self.isRetrying = NO;
    }

    // 保存播放参数（用于重试）
    self.lastPlayParams = @{
        @"type": @"fileid",
        @"appId": appId,
        @"fileId": fileId,
        @"psign": psign
    };

    [self internalPlayWithParams:self.lastPlayParams];
}

- (void)internalPlayWithParams:(NSDictionary *)params {
    NSString *type = params[@"type"];

    if ([type isEqualToString:@"fileid"]) {
        NSString *appId = params[@"appId"];
        NSString *fileId = params[@"fileId"];
        NSString *psign = params[@"psign"];

        NSLog(@"[JXSuperPlayer] FileID播放: appId=%@, fileId=%@, retryCount=%ld", appId, fileId, (long)self.retryCount);

        // 设置状态
        [self updateState:JXSuperPlayerStatePreparing];

        // 创建FileID播放参数
        TXPlayerAuthParams *txParams = [[TXPlayerAuthParams alloc] init];
        txParams.appId = [appId intValue];
        txParams.fileId = fileId;
        txParams.sign = psign;

        // 开始播放
        int result = [self.vodPlayer startVodPlayWithParams:txParams];

        if (result != 0) {
            NSLog(@"[JXSuperPlayer] FileID播放启动失败: %d", result);
            NSError *error = [NSError errorWithDomain:@"JXSuperPlayer"
                                                 code:result
                                             userInfo:@{NSLocalizedDescriptionKey: @"FileID播放启动失败"}];
            [self handlePlayError:error];
        } else {
            [self startProgressTimer];
        }
    } else if ([type isEqualToString:@"url"]) {
        NSString *url = params[@"url"];

        NSLog(@"[JXSuperPlayer] URL播放: %@, retryCount=%ld", url, (long)self.retryCount);

        // 设置状态
        [self updateState:JXSuperPlayerStatePreparing];

        // 开始播放
        int result = [self.vodPlayer startVodPlay:url];

        if (result != 0) {
            NSLog(@"[JXSuperPlayer] URL播放启动失败: %d", result);
            NSError *error = [NSError errorWithDomain:@"JXSuperPlayer"
                                                 code:result
                                             userInfo:@{NSLocalizedDescriptionKey: @"URL播放启动失败"}];
            [self handlePlayError:error];
        } else {
            [self startProgressTimer];
        }
    }
}

- (void)playWithURL:(NSString *)url {
    // 重置重试计数（如果不是重试）
    if (!self.isRetrying) {
        self.retryCount = 0;
        self.isRetrying = NO;
    }

    // 保存播放参数（用于重试）
    self.lastPlayParams = @{
        @"type": @"url",
        @"url": url
    };

    [self internalPlayWithParams:self.lastPlayParams];
}

- (void)play {
    [self.vodPlayer resume];
    [self updateState:JXSuperPlayerStatePlaying];
    [self startProgressTimer];
}

- (void)pause {
    NSLog(@"[JXSuperPlayer] ⚠️ pause 被调用!");
    NSLog(@"[JXSuperPlayer] 调用栈前5层:");
    NSArray *stack = [NSThread callStackSymbols];
    for (int i = 0; i < MIN(5, stack.count); i++) {
        NSLog(@"  %@", stack[i]);
    }
    
    [self.vodPlayer pause];
    [self updateState:JXSuperPlayerStatePaused];
    [self stopProgressTimer];
}

- (void)stop {
    [self.vodPlayer stopPlay];
    [self updateState:JXSuperPlayerStateIdle];
    [self stopProgressTimer];
}

- (void)resume {
    [self play];
}

- (void)seekToTime:(NSTimeInterval)time {
    [self.vodPlayer seek:time];
}

#pragma mark - 播放信息

- (NSTimeInterval)currentTime {
    return [self.vodPlayer currentPlaybackTime];
}

- (NSTimeInterval)duration {
    return [self.vodPlayer duration];
}

- (BOOL)isPlaying {
    return self.state == JXSuperPlayerStatePlaying;
}

#pragma mark - TXVodPlayListener 代理方法

- (void)onPlayEvent:(TXVodPlayer *)player event:(int)EvtID withParam:(NSDictionary *)param {
    switch (EvtID) {
        case PLAY_EVT_VOD_PLAY_PREPARED:
            NSLog(@"[JXSuperPlayer] 播放器准备完成");
            break;
            
        case PLAY_EVT_PLAY_BEGIN:
            NSLog(@"[JXSuperPlayer] 开始播放");
            [self updateState:JXSuperPlayerStatePlaying];
            break;
            
        case PLAY_EVT_PLAY_PROGRESS: {
            // 播放进度（由progressTimer处理，这里不处理）
            
            float progress = [param[@"EVT_PLAY_PROGRESS"] floatValue] / [param[@"EVT_PLAY_DURATION"] floatValue] ;
            [[NSNotificationCenter defaultCenter] postNotificationName:@"videoProgressChanged" object:nil userInfo:@{@"progress":@(progress),@"fileId":self.lastPlayParams[@"fileId"]}];
            break;
        }
            
        case PLAY_EVT_PLAY_END:
            NSLog(@"[JXSuperPlayer] 播放完成");
            [self updateState:JXSuperPlayerStateCompleted];
            [self stopProgressTimer];
            break;
            
        case PLAY_EVT_PLAY_LOADING:
            NSLog(@"[JXSuperPlayer] 加载中...");
            break;
            
        case PLAY_EVT_RCV_FIRST_I_FRAME:
            NSLog(@"[JXSuperPlayer] 首帧渲染");
            break;

        case PLAY_ERR_NET_DISCONNECT:
        case PLAY_ERR_HLS_KEY:
        case PLAY_ERR_GET_PLAYINFO_FAIL: {
            NSLog(@"[JXSuperPlayer] 播放错误: %d", EvtID);
            NSError *error = [NSError errorWithDomain:@"JXSuperPlayer"
                                                 code:EvtID
                                             userInfo:@{NSLocalizedDescriptionKey: @"播放器内部错误"}];
            [self handlePlayError:error];
            break;
        }

        default:
            break;
    }
}

- (void)onNetStatus:(TXVodPlayer *)player withParam:(NSDictionary *)param {
    // 网络状态监控回调
    // 这里接收腾讯云SDK的网络状态参数
    
    // 获取网络相关参数
    NSNumber *videoDecoder = param[@"VIDEO_DECODER"];
    NSNumber *videoBitrate = param[@"VIDEO_BITRATE"];
    NSNumber *audioBitrate = param[@"AUDIO_BITRATE"];
    NSNumber *bufferBytes = param[@"CACHE_SIZE"];
    NSNumber *totalBytes = param[@"TOTAL_BYTES"];
    NSNumber *fps = param[@"VIDEO_FPS"];

    // 只在网络参数有意义变化时打印日志（避免过多日志）
    // 当有实际的码率、缓冲或FPS数据时打印
    static NSInteger lastBitrate = 0;
    NSInteger currentBitrate = [videoBitrate integerValue];

    if (currentBitrate > 0 && currentBitrate != lastBitrate) {
        lastBitrate = currentBitrate;
        NSLog(@"[JXSuperPlayer] 网络状态 - 视频码率:%@ Kbps, 音频码率:%@ Kbps, FPS:%@",
              videoBitrate, audioBitrate, fps);
    }
}

#pragma mark - 进度定时器

- (void)startProgressTimer {
    [self stopProgressTimer];
    
    self.progressTimer = [NSTimer scheduledTimerWithTimeInterval:0.5
                                                          target:self
                                                        selector:@selector(updateProgress)
                                                        userInfo:nil
                                                         repeats:YES];
}

- (void)stopProgressTimer {
    if (self.progressTimer) {
        [self.progressTimer invalidate];
        self.progressTimer = nil;
    }
}

- (void)updateProgress {
    NSTimeInterval currentTime = [self currentTime];
    NSTimeInterval duration = [self duration];
    
    if (duration > 0 && [self.delegate respondsToSelector:@selector(superPlayerDidUpdateProgress:duration:)]) {
        [self.delegate superPlayerDidUpdateProgress:currentTime duration:duration];
    }
}

#pragma mark - 状态管理

- (void)updateState:(JXSuperPlayerState)state {
    if (_state != state) {
        _state = state;
        
        NSLog(@"[JXSuperPlayer] 状态变更: %ld", (long)state);
        
        if ([self.delegate respondsToSelector:@selector(superPlayerDidChangeState:)]) {
            [self.delegate superPlayerDidChangeState:state];
        }
    }
}

- (void)notifyError:(NSError *)error {
    [self updateState:JXSuperPlayerStateError];
    
    if ([self.delegate respondsToSelector:@selector(superPlayerDidFailWithError:)]) {
        [self.delegate superPlayerDidFailWithError:error];
    }
}

#pragma mark - 资源释放

- (void)releasePlayer {
    NSLog(@"[JXSuperPlayer] 释放播放器资源");
    
    // 停止进度定时器
    [self stopProgressTimer];
    
    // 完全停止播放并清理
    if (self.vodPlayer) {
        // 先停止播放
        [self.vodPlayer stopPlay];
        
        // 移除视图
        [self.vodPlayer removeVideoWidget];
        
        // 重置播放器配置，确保下次创建时是全新状态
        self.vodPlayer.vodDelegate = nil;
        
        // 释放播放器实例
        self.vodPlayer = nil;
    }
    
    // 清理视图
    if (self.playerView) {
        [self.playerView removeFromSuperview];
        self.playerView = nil;
    }
    
    // 重置状态
    [self updateState:JXSuperPlayerStateIdle];
    
    NSLog(@"[JXSuperPlayer] 播放器资源已完全释放");
}

- (void)dealloc {
    [self releasePlayer];
    NSLog(@"[JXSuperPlayer] dealloc");
}

#pragma mark - 工具方法

+ (NSString *)extractAppIdFromPsign:(NSString *)psign {
    if (!psign || psign.length == 0) {
        return nil;
    }
    
    // JWT格式: header.payload.signature
    NSArray *components = [psign componentsSeparatedByString:@"."];
    if (components.count < 2) {
        NSLog(@"[JXSuperPlayer] psign格式错误");
        return nil;
    }
    
    // 解析payload（Base64编码）
    NSString *payloadBase64 = components[1];
    
    // Base64解码
    NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:payloadBase64 options:0];
    if (!decodedData) {
        NSLog(@"[JXSuperPlayer] Base64解码失败");
        return nil;
    }
    
    // JSON解析
    NSError *error = nil;
    NSDictionary *payload = [NSJSONSerialization JSONObjectWithData:decodedData
                                                            options:0
                                                              error:&error];
    if (error || ![payload isKindOfClass:[NSDictionary class]]) {
        NSLog(@"[JXSuperPlayer] JSON解析失败: %@", error);
        return nil;
    }
    
    // 提取appId
    id appIdValue = payload[@"appId"];
    if ([appIdValue isKindOfClass:[NSNumber class]]) {
        return [(NSNumber *)appIdValue stringValue];
    } else if ([appIdValue isKindOfClass:[NSString class]]) {
        return (NSString *)appIdValue;
    }
    
    NSLog(@"[JXSuperPlayer] psign中未找到appId");
    return nil;
}

#pragma mark - 错误处理和重试

- (void)handlePlayError:(NSError *)error {
    // 检查是否是网络超时错误
    BOOL isNetworkTimeout = [error.domain isEqualToString:NSURLErrorDomain] &&
                           (error.code == NSURLErrorTimedOut || error.code == NSURLErrorCannotConnectToHost);

    // 如果是网络错误且未达到最大重试次数，则重试
    if (isNetworkTimeout && self.retryCount < self.maxRetryCount) {
        self.retryCount++;
        self.isRetrying = YES;

        NSLog(@"[JXSuperPlayer] 播放失败，准备重试 (%ld/%ld): %@", (long)self.retryCount, (long)self.maxRetryCount, error.localizedDescription);

        // 延迟2秒后重试
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            [self internalPlayWithParams:self.lastPlayParams];
        });
    } else {
        // 重试次数用完或非网络错误，直接通知错误
        if (self.retryCount >= self.maxRetryCount) {
            NSLog(@"[JXSuperPlayer] 重试次数用完，仍播放失败");
        }
        [self updateState:JXSuperPlayerStateError];
        [self notifyError:error];
    }
}

@end