//
//  AVVodListViewController.m
//  SellyCloudSDK_Example
//

#import "AVVodListViewController.h"
#import "AVVodItemModel.h"
#import "AVVodItemCell.h"
#import "AVLiveStreamModel.h"
#import "SCVodVideoPlayerViewController.h"
#import "AVConstants.h"
#import <Masonry/Masonry.h>

@interface AVVodListViewController () <UICollectionViewDelegate, UICollectionViewDataSource>
@property (nonatomic, strong) UICollectionView *collectionView;
@property (nonatomic, strong) NSArray<AVVodItemModel *> *vodItems;
@end

@implementation AVVodListViewController

static NSString * const kVodItemCellIdentifier = @"VodItemCell";

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor systemBackgroundColor];
    self.title = @"点播测试";

    self.vodItems = @[];
    [self setupCollectionView];
    [self fetchVodList];
}

#pragma mark - Network

- (void)fetchVodList {
    NSURL *url = [NSURL URLWithString:@"http://rtmp.sellycloud.io:8089/live/sdk/demo/vodlist"];
    NSURLSessionDataTask *task = [NSURLSession.sharedSession dataTaskWithURL:url completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
        if (error || !data) {
            NSLog(@"fetchVodList failed: %@", error);
            return;
        }
        NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
        if (![json isKindOfClass:NSDictionary.class]) return;

        NSMutableArray<AVVodItemModel *> *items = [NSMutableArray array];
        [json enumerateKeysAndObjectsUsingBlock:^(NSString *type, NSString *vodUrl, BOOL *stop) {
            AVVodItemModel *item = [AVVodItemModel modelWithUrl:vodUrl
                                                          cover:@""
                                                          title:[NSString stringWithFormat:@"%@ 测试", type.uppercaseString]
                                                           type:type];
            [items addObject:item];
        }];

        dispatch_async(dispatch_get_main_queue(), ^{
            self.vodItems = items.copy;
            [self.collectionView reloadData];
        });
    }];
    [task resume];
}

#pragma mark - Setup UI

- (void)setupCollectionView {
    UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
    layout.scrollDirection = UICollectionViewScrollDirectionVertical;
    layout.minimumInteritemSpacing = 12;
    layout.minimumLineSpacing = 16;
    layout.sectionInset = UIEdgeInsetsMake(16, 16, 16, 16);

    self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
    self.collectionView.backgroundColor = [UIColor systemBackgroundColor];
    self.collectionView.delegate = self;
    self.collectionView.dataSource = self;
    self.collectionView.alwaysBounceVertical = YES;
    [self.collectionView registerClass:[AVVodItemCell class] forCellWithReuseIdentifier:kVodItemCellIdentifier];

    [self.view addSubview:self.collectionView];
    [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view.mas_safeAreaLayoutGuideTop);
        make.left.right.bottom.equalTo(self.view);
    }];
}

#pragma mark - UICollectionViewDataSource

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    return self.vodItems.count;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    AVVodItemCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:kVodItemCellIdentifier forIndexPath:indexPath];
    [cell configureWithModel:self.vodItems[indexPath.item]];
    return cell;
}

#pragma mark - UICollectionViewDelegateFlowLayout

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)layout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
    CGFloat totalHorizontalPadding = 16 * 2 + 12;
    CGFloat availableWidth = collectionView.bounds.size.width - totalHorizontalPadding;
    CGFloat itemWidth = availableWidth / 2.0;
    CGFloat thumbnailHeight = itemWidth * (9.0 / 16.0);
    CGFloat itemHeight = thumbnailHeight + 6 + 18 + 6; // thumbnail + spacing + title (1 line) + bottom
    return CGSizeMake(itemWidth, itemHeight);
}

#pragma mark - UICollectionViewDelegate

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    [collectionView deselectItemAtIndexPath:indexPath animated:YES];

    AVVodItemModel *item = self.vodItems[indexPath.item];

    // Convert to AVLiveStreamModel for the player
    AVLiveStreamModel *stream = [[AVLiveStreamModel alloc] init];
    stream.url = item.url;

    SCVodVideoPlayerViewController *vc = [[SCVodVideoPlayerViewController alloc] initWithLiveStream:stream];
    vc.hidesBottomBarWhenPushed = YES;
    vc.modalPresentationStyle = UIModalPresentationFullScreen;
    [self.navigationController pushViewController:vc animated:YES];
}

#pragma mark - Orientation Support

- (BOOL)shouldAutorotate {
    return YES;
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationPortrait;
}

@end