SDJK_iOS/SDJK/Modules/OtherModule/VideoModule/Controller/RQDspVideoDetailViewController.m

//
//  RQDspVideoDetailViewController.m
//  SDJK
//
//  Created by RONGQING on 2022/1/19.
//

#import "RQDspVideoDetailViewController.h"
#import <ZFPlayer/ZFAVPlayerManager.h>
#import <ZFPlayer/ZFIJKPlayerManager.h>
#import <ZFPlayer/ZFPlayerControlView.h>
#import <ZFPlayer/ZFPlayerConst.h>
#import "MPTransition.h"


/// 播放器view的tag，列表中UI控件唯一tag值
#define kPlayerViewTag 100
static NSString *kIdentifier = @"kIdentifier";


@interface RQDspVideoDetailViewController ()
/// viewModel
@property (nonatomic, readonly, strong) RQDspVideoDetailViewModel *viewModel;

@property (nonatomic, readwrite, strong) UIButton *backBtn;
@property (nonatomic, readwrite, strong) RQDspVideoDetailControlView *controlView;
@property (nonatomic, readwrite, strong) NSIndexPath *playingIndexPath;
@property (nonatomic, readwrite, strong) ZFPlayerControlView *preControlView;
@property (nonatomic, readwrite, assign) BOOL isInited;
@property (nonatomic, readwrite, assign) BOOL isPassPlayer;

@property (nonatomic, readwrite, strong) MPPlayerController *player;
@property (nonatomic, readwrite, assign) NSInteger index;
@property (nonatomic, readwrite, strong) NSMutableArray *dataSource;
@property (nonatomic, strong) UIView *startView;
@property (nonatomic, strong) UIImage *startImage;
@property (nonatomic, copy) void(^popbackBlock)(void);


@end

@implementation RQDspVideoDetailViewController
@dynamic viewModel;

#pragma mark - SystemMethod
- (void)viewDidLoad {
    [super viewDidLoad];
    /// 初始化
    [self rq_setup];
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    self.backBtn.frame = CGRectMake(15, CGRectGetMaxY([UIApplication sharedApplication].statusBarFrame), 36, 36);
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    if (!self.isInited) {
        self.isInited = YES;
        if (self.isPassPlayer) {
            UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:self.playingIndexPath];
            UIView *playerView = [cell viewWithTag:10086];
            self.player.controlView = self.controlView;
            if (playerView) {
                [self.player updateNoramlPlayerWithContainerView:playerView];
                [self.controlView resetControlView];
                VideosItem *videosItem = self.dataSource[self.playingIndexPath.row];
                UIViewContentMode imageMode;
                if (videosItem.videoWidth >= videosItem.videoHeight) {
                    imageMode = UIViewContentModeScaleAspectFit;
                } else {
                    imageMode = UIViewContentModeScaleAspectFill;
                }
                [self.controlView showCoverViewWithUrl:videosItem.coverFileUrl withImageMode:imageMode];
            }
        }else {
            self.player.controlView = self.controlView;
            [self playTheVideoAtIndexPath:self.playingIndexPath scrollToTop:NO];
        }
    }
    self.navigationController.delegate = self;
}


#pragma mark - PrivateMethods
/// 初始化
- (void)rq_setup {
    @weakify(self)
    
    self.tableView.pagingEnabled = YES;
    self.tableView.showsVerticalScrollIndicator = NO;
    self.tableView.scrollsToTop = NO;
    
    self.index = self.viewModel.indexPath.row;
    [self.view addSubview:self.backBtn];
    
    if (!self.player) {
        self.player = [MPPlayerController playrWithContainerView:[UIView new]];
        [self requestData];
        self.player.playableArray = self.dataSource;
    }else {
        for(UIView *subView in self.player.currentPlayerManager.view.subviews) {
            [subView removeFromSuperview];
        }
        self.isPassPlayer = YES;
    }
    
    self.player.presentationSizeChanged = ^(id<ZFPlayerMediaPlayback>  _Nonnull asset, CGSize size) {
        @strongify(self)
        if (size.width >= size.height) {
            self.player.currentPlayerManager.scalingMode = ZFPlayerScalingModeAspectFit;
        } else {
            self.player.currentPlayerManager.scalingMode = ZFPlayerScalingModeAspectFill;
        }
    };
    [self.tableView reloadData];
    self.playingIndexPath = [NSIndexPath indexPathForRow:self.index inSection:0];
    [self.tableView scrollToRowAtIndexPath:self.playingIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:NO];
}

- (void)requestData {
    [self.dataSource addObjectsFromArray:RQ_COMMON_MANAGER.dspListArr];
    self.player.playableArray = self.dataSource;
}

- (void)backClick:(UIButton *)sender {
    [self.navigationController popViewControllerAnimated:YES];
}

/// play the video
- (void)playTheVideoAtIndexPath:(NSIndexPath *)indexPath scrollToTop:(BOOL)scrollToTop {
    UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
    UIView *contanier = [cell viewWithTag:10086];
    [self.player updateNoramlPlayerWithContainerView:contanier];
    [self.player playWithPlayable:self.dataSource[indexPath.row]];
    [self.controlView resetControlView];
    VideosItem *videosItem = self.dataSource[indexPath.row];
    UIViewContentMode imageMode;
    if (videosItem.videoWidth >= videosItem.videoHeight) {
        imageMode = UIViewContentModeScaleAspectFit;
    } else {
        imageMode = UIViewContentModeScaleAspectFill;
    }
    [self.controlView showCoverViewWithUrl:videosItem.coverFileUrl withImageMode:imageMode];
    self.playingIndexPath = indexPath;
}

- (void)didMoveToParentViewController:(UIViewController *)parent {
    if (!parent) {
        if (self.isPassPlayer) {
            [self.controlView removeFromSuperview];
            for (UIView *subView in self.player.currentPlayerManager.view.subviews) {
                [subView removeFromSuperview];
            }
            self.player.controlView = self.preControlView;
            if (self.popbackBlock) {
                self.popbackBlock();
            }
        }
    }
}

#pragma mark - UIScrollViewDelegate   列表播放必须实现
- (void)cellPlayVideo {
    if (self.tableView.visibleCells.count && self.tableView.visibleCells.count == 1) {
        UITableViewCell *cell = self.tableView.visibleCells.firstObject;
        NSIndexPath *ip = [self.tableView indexPathForCell:cell];
        NSComparisonResult result = [ip compare:self.playingIndexPath];
        // 判断indexPath是否发生变化
        if (ip && result != NSOrderedSame) {
            [self.player stop];
            [self playTheVideoAtIndexPath:ip scrollToTop:NO];
        }
        if (ip) {
            self.playingIndexPath = ip;
        }
    }
}


- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
    [self cellPlayVideo];
}

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    [self handlePlayerOutofScreen: scrollView];
}

- (void)handlePlayerOutofScreen: (UIScrollView *)scrollView {
    // 为了处理快速滑动时，player复用的bug
    UIView *cell = [self.tableView cellForRowAtIndexPath:self.playingIndexPath];
    if (!cell && self.playingIndexPath) {
        [self.player stop];
        return;
    }
}


#pragma mark - OverrideMethods
- (UIEdgeInsets)contentInset {
    return UIEdgeInsetsMake(0, 0, 0, 0);
}

- (UITableViewCell *)tableView:(UITableView *)tableView dequeueReusableCellWithIdentifier:(NSString *)identifier forIndexPath:(NSIndexPath *)indexPath {
    switch (indexPath.section) {
        case 0: {
            RQDspVideoDetailCell *cell = [RQDspVideoDetailCell cellWithTableView:tableView];
            return cell;
        }
            
        default:
            return [super tableView:tableView dequeueReusableCellWithIdentifier:identifier forIndexPath:indexPath];
    }
    
}

- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath withObject:(id)object {
    switch (indexPath.section) {
        case 0: {
            RQDspVideoDetailCell *dspVideoDetailCell = (RQDspVideoDetailCell *)cell;
            [dspVideoDetailCell bindViewModel:object];
            break;
        }
            
        default: {
            [super configureCell:cell atIndexPath:indexPath withObject:object];
            break;
        }
    }
    
}



#pragma mark - LazyLoad
- (void)setPlayer:(MPPlayerController *)player {
    _player = player;
    self.preControlView = (ZFPlayerControlView *)player.controlView;
    [self.preControlView removeFromSuperview];
}

- (RQDspVideoDetailControlView *)controlView {
    if (!_controlView) {
        _controlView = [RQDspVideoDetailControlView new];
    }
    return _controlView;
}

- (UIButton *)backBtn {
    if (!_backBtn) {
        _backBtn = [UIButton buttonWithType:UIButtonTypeCustom];
        [_backBtn setImage:[UIImage imageNamed:@"icon_titlebar_whiteback"] forState:UIControlStateNormal];
        [_backBtn addTarget:self action:@selector(backClick:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _backBtn;
}

- (NSMutableArray *)dataSource {
    if (!_dataSource) {
        _dataSource = @[].mutableCopy;
    }
    return _dataSource;
}

- (id<UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController animationControllerForOperation:(UINavigationControllerOperation)operation fromViewController:(UIViewController *)fromVC toViewController:(UIViewController *)toVC{
    if (self.startView == nil)
        return nil;
    if (self.playingIndexPath &&
        self.playingIndexPath.row != self.index)
        return nil;
    return [MPTransition animationWithDuration:0.3 startView:self.startView startImage:self.startImage player:self.player operation:operation completion:^{
    }];
}
@end