SDJK_iOS/SDJK/Modules/OtherModule/VideoModule/Controller/试题详解视频播放页面/RQExplainVideoViewController.m

//
//  RQExplainVideoViewController.m
//  SDJK
//
//  Created by 张嵘 on 2022/7/5.
//

#import "RQExplainVideoViewController.h"
#import <ZFPlayer/ZFAVPlayerManager.h>

@interface RQExplainVideoViewController ()
/// viewModel
@property (nonatomic, readonly, strong) RQExplainVideoViewModel *viewModel;
@property (nonatomic, readwrite, strong) UIImageView *containerView;
@property (nonatomic, readwrite, strong) ZFPlayerController *player;
@property (nonatomic, readwrite, strong) ZFPlayerControlView *controlView;

@end

@implementation RQExplainVideoViewController
@dynamic viewModel;

#pragma mark - SystemMethod
- (void)viewDidLoad {
    [super viewDidLoad];
    /// 初始化
    [self rq_setup];
    if (RQ_USER_MANAGER.tryLookCount > 0) {
        RQ_USER_MANAGER.tryLookCount = RQ_USER_MANAGER.tryLookCount - 1;
    }
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    self.containerView.frame = CGRectMake(0, RQ_APPLICATION_STATUS_BAR_HEIGHT, RQ_SCREEN_WIDTH, RQ_SCREEN_HEIGHT - RQ_APPLICATION_STATUS_BAR_HEIGHT - RQ_APPLICATION_SAFEAREA_BOTTOM_HEIGHT);
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    self.player.viewControllerDisappear = NO;
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    self.player.viewControllerDisappear = YES;
}
#pragma mark - PrivateMethods
/// 初始化
- (void)rq_setup {
    [self.view addSubview:self.containerView];
    [self setupPlayer];
}

- (UIImage*)videoImageWithvideoURL:(NSURL *)videoURL {
    NSString *cacheKeyStr = [[YYWebImageManager sharedManager] cacheKeyForURL:[NSURL URLWithString:videoURL.absoluteString]];
    UIImage *memoryImage = [[YYImageCache sharedCache] getImageForKey:cacheKeyStr];
    if (memoryImage) {
        return memoryImage;
    } else {
        UIImage *thumbnailImage = [self firstFrameWithVideoURL:videoURL size:CGSizeMake(RQ_SCREEN_WIDTH - 32.f, RQ_SCREEN_HEIGHT - RQ_APPLICATION_TOP_BAR_HEIGHT - RQ_APPLICATION_SAFEAREA_BOTTOM_HEIGHT)];
        dispatch_async(dispatch_get_main_queue(), ^{
            YYImageCache * cache =  [YYImageCache sharedCache];
            [cache setImage:thumbnailImage forKey:videoURL.absoluteString];
        });
        return thumbnailImage;
    }
}

// 获取视频第一帧
- (UIImage*)firstFrameWithVideoURL:(NSURL*)url size:(CGSize)size {
   NSDictionary *opts = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:AVURLAssetPreferPreciseDurationAndTimingKey];
   AVURLAsset *urlAsset = [AVURLAsset URLAssetWithURL:url options:opts];
   AVAssetImageGenerator *generator = [AVAssetImageGenerator assetImageGeneratorWithAsset:urlAsset];
   generator.appliesPreferredTrackTransform = YES;
   generator.maximumSize = CGSizeMake(size.width, size.height);
   NSError*error =nil;
   CGImageRef img = [generator copyCGImageAtTime:CMTimeMake(0, 10) actualTime:NULL error:&error];
   {
       return [UIImage imageWithCGImage:img];
   }

   return nil;

}

- (void)setupPlayer {
    ZFAVPlayerManager *playerManager = [[ZFAVPlayerManager alloc] init];
//    ZFIJKPlayerManager *playerManager = [[ZFIJKPlayerManager alloc] init];

    playerManager.shouldAutoPlay = YES;
    
    /// 播放器相关
    self.player = [ZFPlayerController playerWithPlayerManager:playerManager containerView:self.containerView];
    self.player.controlView = self.controlView;
    /// 设置退到后台继续播放
    self.player.pauseWhenAppResignActive = NO;
//    self.player.resumePlayRecord = YES;
    
    @weakify(self)
    self.player.orientationWillChange = ^(ZFPlayerController * _Nonnull player, BOOL isFullScreen) {
        RQ_APPDELEGATE.allowOrentitaionRotation = isFullScreen;
    };
    
    /// 播放完成
    self.player.playerDidToEnd = ^(id  _Nonnull asset) {
        @strongify(self)
        [self.player stop];
        [RQ_APPDELEGATE.services popViewModelAnimated:YES];
    };
    
    self.player.assetURLs = @[[NSURL URLWithString:self.viewModel.explainModel.short_video_url],
                              [NSURL URLWithString:self.viewModel.explainModel.short_video_url]];
    [self.player playTheNext];
    [self.controlView showTitle:self.viewModel.title coverImage:[self videoImageWithvideoURL:[NSURL URLWithString:self.viewModel.explainModel.short_video_url]] fullScreenMode:ZFFullScreenModeAutomatic];
}


#pragma mark - LazyLoad
- (ZFPlayerControlView *)controlView {
    @weakify(self)
    if (!_controlView) {
        _controlView = [ZFPlayerControlView new];
        _controlView.fastViewAnimated = YES;
        _controlView.autoHiddenTimeInterval = 5;
        _controlView.autoFadeTimeInterval = 0.5;
        _controlView.prepareShowLoading = YES;
        _controlView.prepareShowControlView = NO;
        [_controlView.portraitControlView.backBtn setTapActionWithBlock:^(UITapGestureRecognizer *tap) {
            @strongify(self)
            [self.player stop];
            [RQ_APPDELEGATE.services popViewModelAnimated:YES];
        }];
    }
    return _controlView;
}

- (UIImageView *)containerView {
    if (!_containerView) {
        _containerView = [[UIImageView alloc] initWithFrame:CGRectMake(0, RQ_APPLICATION_STATUS_BAR_HEIGHT, RQ_SCREEN_WIDTH, RQ_SCREEN_HEIGHT - RQ_APPLICATION_STATUS_BAR_HEIGHT - RQ_APPLICATION_SAFEAREA_BOTTOM_HEIGHT)];
    }
    return _containerView;
}
@end