wodeshebao-iOS/我的社保/Public/Controller/SPSBPreviewViewController.m

//
//  SPSBPreviewViewController.m
//  我的社保
//
//  Created by shanp on 2021/5/18.
//

#import "SPSBPreviewViewController.h"
#import "SPSBUIGeneralHeader.h"
#import "JXHZoomImageView.h"
#import "SPSBEnumerationProfile.h"
#import <SDWebImage.h>
#import "SPSBURLApiProfile.h"

@implementation SPSBPreviewConfiguration

@end

@interface SPSBPreviewViewController ()<UIScrollViewDelegate, UIGestureRecognizerDelegate> {
    UIImageView *_animationView;
    
    UIView *_bgView;
    UIScrollView *_scrollView;
    UIPageControl *_pageControl;
    
//    BYHVideoPlayer *_player;
//    AVPlayerLayer *_playLayer;
//    UIView *_playView;
    
    NSInteger _index;
    
    SPSBPreviewConfiguration *_configuration;
    
    CGFloat _panOriginalWidth;
    CGFloat _panOriginalHeight;
    CGFloat _panOriginalX;
    CGFloat _panOriginalY;
}

@end

#define spsb_offset 20
#define spsb_imageViewTag 5000
@implementation SPSBPreviewViewController

- (void)viewDidLoad {
    [super viewDidLoad];
//    [self initData];
    [self setupUI];
}

//- (void)initData {
//    _player = SPSBVideoPlayer.new;
//    _player.spsb_isLoop = _player.spsb_isAutoPlay = true;
//    _player.spsb_videoDelegate = self;
//}

#pragma mark - Action
- (void)showWithConfiguration:(SPSBPreviewConfiguration *)configuration currentImage:(UIImage *)currentImage index:(NSInteger)index {
    [self.view.superview bringSubviewToFront:self.view];
    _index = index;
    _configuration = configuration;
//    if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//        _playView.hidden = false;
//        if (!_configuration.spsb_video) {
//            [self.view showToastWithTitle:SPSBLocalize(SPSBVideoPlayFailureTipsTextStringKey)];
//            return;
//        }
//        _pageControl.numberOfPages = 1;
//        _pageControl.currentPage = 0;
//        [_scrollView setContentSize:(CGSize){jxh_screenWidth() + spsb_offset, jxh_screenHeight()}];
//        [_scrollView setContentOffset: (CGPoint){0, 0}];
//        for (NSInteger i = 0; i < _spsb_maxPreview; i ++) {
//            JXHZoomImageView *imageView = [_scrollView viewWithTag:spsb_imageViewTag + i];
//            if (i == index) {
//                [imageView setImage:currentImage];
//            } else {
//                [imageView setImage:nil];
//            }
//        }
//    } else {
//        _playView.hidden = true;
        NSInteger count = _configuration.spsb_images.count > _spsb_maxPreview ? _spsb_maxPreview : _configuration.spsb_images.count;
        if (index >= count) index = count - 1;
        _pageControl.numberOfPages = count;
        _pageControl.currentPage = index;
        [_scrollView setContentSize:(CGSize){(jxh_screenWidth() + spsb_offset) * count, jxh_screenHeight()}];
        [_scrollView setContentOffset: (CGPoint){(jxh_screenWidth() + spsb_offset) * index, 0}];
        for (NSInteger i = 0; i < _spsb_maxPreview; i ++) {
            JXHZoomImageView *imageView = [_scrollView viewWithTag:spsb_imageViewTag + i];
            [imageView setImage:nil];
            if (i == index) {
                [imageView setImage:currentImage];
            } else if (i < _configuration.spsb_images.count) {
                @weakify(imageView)
                [[SDWebImageDownloader sharedDownloader] downloadImageWithURL:spsb_fileURL(configuration.spsb_images[i]) completed:^(UIImage * _Nullable image, NSData * _Nullable data, NSError * _Nullable error, BOOL finished) {
                    if (image) {
                        [weak_imageView setImage:image];
                    }
                }];
            }
        }
//    }
    
    
    CGRect rect = [self getImageOriginalRect];
    
    _animationView.image = currentImage;
    [_animationView setLayerCornerRadius:configuration.spsb_cornerRadius clipToBounds:true];
    _animationView.frame = rect;
    
    CGRect newRect = [self getAnimationImageViewRect];
    
    self.view.backgroundColor = spsb_000000_color(1.f);
    self.view.hidden = _animationView.hidden = false;
    _spsb_previewing = true;
    [self setNeedsStatusBarAppearanceUpdate];
    [UIView animateWithDuration:0.3 animations:^{
        self->_animationView.frame = newRect;
        [self->_animationView setLayerCornerRadius:0 clipToBounds:true];
    } completion:^(BOOL finished) {
        self->_bgView.hidden = false;
//        if (configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//            self->_playView.frame = self->_animationView.frame;
//            self->_playLayer = [self->_player setPlayUrl:configuration.spsb_video videoGravity:AVLayerVideoGravityResizeAspectFill layerFrame:self->_animationView.bounds];
//            [self->_playView.layer addSublayer:self->_playLayer];
//        } else {
            self->_animationView.hidden = true;
//        }
    }];

}

- (void)dismissView {
    JXHZoomImageView *imageView = [_scrollView viewWithTag:spsb_imageViewTag + _index];
    _animationView.image = imageView.jxh_imageView.image;
    CGRect rect = [self getAnimationImageViewRect];
    _animationView.frame = rect;
    
    CGRect newRect = [self getImageOriginalRect];
    
//    if (_playLayer) {
//        [_player playOperate:SPSBVideoOperateStop];
//        [_playLayer removeFromSuperlayer];
//        _playLayer = nil;
//    }
    _bgView.hidden = true;
    _animationView.hidden = false;
    _spsb_previewing = false;
    
    [UIView animateWithDuration:0.3 animations:^{
        self->_animationView.frame = newRect;
        [self->_animationView setLayerCornerRadius:self->_configuration.spsb_cornerRadius clipToBounds:true];
        [self setNeedsStatusBarAppearanceUpdate];
        self.view.backgroundColor = spsb_000000_color(0.f);
    } completion:^(BOOL finished) {
        self->_animationView.image = nil;
        self.view.hidden = self->_animationView.hidden = true;
    }];
}

- (void)dismissViewPan {
//    if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//        _animationView.frame = _playView.frame;
//    }
    
    CGRect newRect = [self getImageOriginalRect];
    
//    if (_playLayer) {
//        [_player playOperate:SPSBVideoOperateStop];
//        [_playLayer removeFromSuperlayer];
//        _playLayer = nil;
//    }
    _bgView.hidden = true;
    _animationView.hidden = false;
    _spsb_previewing = false;
    
    [UIView animateWithDuration:0.3 animations:^{
        self->_animationView.frame = newRect;
        [self->_animationView setLayerCornerRadius:self->_configuration.spsb_cornerRadius clipToBounds:true];
        [self setNeedsStatusBarAppearanceUpdate];
        self.view.backgroundColor = spsb_000000_color(0.f);
    } completion:^(BOOL finished) {
        self->_animationView.transform = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
//        self->_playView.transform = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
        self->_animationView.image = nil;
        self.view.hidden = self->_animationView.hidden = true;
    }];
}

- (CGRect)getAnimationImageViewRect {
    UIImage *image = _animationView.image;
    if (!image) {
        return (CGRect){0, 0, jxh_screenWidth(), jxh_screenHeight()};
    }
//    if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//        CGFloat proportion = jxh_viewHeight(self.view) / jxh_viewWidth(self.view) - image.size.height / image.size.width;
//        if (proportion > 0 && proportion < SPSBVideoFullScreenDifferentProportion) {
//            CGFloat width = image.size.width / image.size.height * jxh_screenHeight();
//            CGFloat x = (jxh_screenWidth() - width) / 2;
//            return  (CGRect){x, 0, width, jxh_screenHeight()};
//        } else {
//            CGFloat height = image.size.height / image.size.width * jxh_screenWidth();
//            CGFloat y = (jxh_screenHeight() - height) / 2;
//            return  (CGRect){0, y, jxh_screenWidth(), height};
//        }
//    } else {
        CGFloat height = image.size.height / image.size.width * jxh_screenWidth();
        CGFloat y = (jxh_screenHeight() - height) / 2;
        if (y < 0) y = 0;
        return  (CGRect){0, y, jxh_screenWidth(), height};
//    }
}

- (CGRect)getAnimationImageViewPanRectWithView:(JXHZoomImageView *)view {
    UIImage *image = _animationView.image;
    if (!image) {
        return (CGRect){0, 0, jxh_screenWidth(), jxh_screenHeight()};
    }
//    if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//        CGFloat proportion = jxh_viewHeight(self.view) / jxh_viewWidth(self.view) - image.size.height / image.size.width;
//        if (proportion > 0 && proportion < SPSBVideoFullScreenDifferentProportion) {
//            CGFloat width = image.size.width / image.size.height * jxh_screenHeight();
//            CGFloat x = (jxh_screenWidth() - width) / 2;
//            return  (CGRect){x, 0, width, jxh_screenHeight()};
//        } else {
//            CGFloat height = image.size.height / image.size.width * jxh_screenWidth();
//            CGFloat y = (jxh_screenHeight() - height) / 2;
//            return  (CGRect){0, y, jxh_screenWidth(), height};
//        }
//    } else {
        CGFloat height = image.size.height / image.size.width * jxh_viewWidth(view.jxh_imageView);
        CGFloat y = (jxh_screenHeight() - height) / 2;
        if (y < 0) y = 0;
        return  (CGRect){-view.contentOffset.x, y, jxh_viewWidth(view.jxh_imageView), height};
//    }
}

- (CGRect)getImageOriginalRect {
    if (_spsb_getOriginalRect) {
        return _spsb_getOriginalRect(_index);
    } else {
        return CGRectZero;
    }
}

- (void)panAction:(UIPanGestureRecognizer *)sender {
//    if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo && !_player) {
//        sender.state = UIGestureRecognizerStateFailed;
//        return;
//    }
    CGPoint p = [sender translationInView:self.view];
    JXHZoomImageView *imageView = [_scrollView viewWithTag:spsb_imageViewTag + _index];
    if (!imageView.jxh_imageView.image) {
        sender.state = UIGestureRecognizerStateFailed;
        return;
    }
    CGFloat scale = 1 - p.y / jxh_viewHeight(self.view) / 2;
    if (scale > 1) {
        scale = 1.f;
    }
    
    switch (sender.state) {
        case UIGestureRecognizerStateBegan: {
            if ([sender translationInView:self.view].x != 0) {
                sender.state = UIGestureRecognizerStateFailed;
                return;
            }
            if (imageView.contentOffset.y + imageView.contentInset.top > 1) {
                sender.state = UIGestureRecognizerStateFailed;
                return;
            }
            if (p.y <= 0) {
                sender.state = UIGestureRecognizerStateFailed;
                return;
            }
            _scrollView.panGestureRecognizer.state = UIGestureRecognizerStateFailed;
            imageView.panGestureRecognizer.state = UIGestureRecognizerStateFailed;
//            if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//                _bgView.hidden = true;
//                _animationView.hidden = true;
//                [_player playOperate:SPSBVideoOperatePause];
//                _panOriginalWidth = jxh_viewWidth(_playView);
//                _panOriginalHeight = jxh_viewHeight(_playView);
//                CGPoint location = [sender locationInView:_playView];
//                _panOriginalX = location.x;
//                _panOriginalY = location.y;
//                _playView.transform = CGAffineTransformMake(scale, 0, 0, scale, p.x, p.y);
//            } else {
                _animationView.image = imageView.jxh_imageView.image;
                _animationView.frame = [self getAnimationImageViewPanRectWithView:imageView];
                _panOriginalWidth = jxh_viewWidth(_animationView);
                _panOriginalHeight = jxh_viewHeight(_animationView);
                CGPoint location = [sender locationInView:_animationView];
                _panOriginalX = location.x;
                _panOriginalY = location.y;
                debugLog(@"%lf----%lf", location.x, location.y);
                _animationView.hidden = false;
                _bgView.hidden = true;
                _animationView.transform = CGAffineTransformMake(scale, 0, 0, scale, p.x, p.y);
//            }
            
            self.view.backgroundColor = spsb_000000_color(scale);
            
        }
            break;
        case UIGestureRecognizerStateChanged: {
            CGFloat change = (1 - scale);
            CGFloat y = p.y - (_panOriginalHeight / 2 - _panOriginalY) * change;
            CGFloat x = p.x - (_panOriginalWidth / 2 - _panOriginalX) * change;
//            if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//                _playView.transform = CGAffineTransformMake(scale, 0, 0, scale, x, y);
//            } else {
                _animationView.transform = CGAffineTransformMake(scale, 0, 0, scale, x, y);
//            }
            self.view.backgroundColor = spsb_000000_color(scale);
        }
            break;
        case UIGestureRecognizerStateFailed:
//            if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//                _playView.transform = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
//                _bgView.hidden = false;
//                [_player playOperate:SPSBVideoOperatePlay];
//            } else {
                _animationView.transform = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
                _animationView.hidden = true;
                _bgView.hidden = false;
//            }
            self.view.backgroundColor = spsb_000000_color(1.f);
            break;
        default:
            if ([sender velocityInView:self.view].y > 1000) {
                [self dismissViewPan];
                return;
            }
            if (p.y > jxh_viewHeight(self.view) / 2) {
                [self dismissViewPan];
                return;
            }
//            if (_configuration.spsb_type == SPSBPersonalPagePreviewTypeVideo) {
//                [UIView animateWithDuration:0.3 animations:^{
//                    self->_playView.transform = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
//                    self.view.backgroundColor = spsb_000000_color(1.f);
//                } completion:^(BOOL finished) {
//                    self->_bgView.hidden = false;
//                    [self->_player playOperate:SPSBVideoOperatePlay];
//                }];
//            } else {
                [UIView animateWithDuration:0.3 animations:^{
                    self->_animationView.transform = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
                    self.view.backgroundColor = spsb_000000_color(1.f);
                } completion:^(BOOL finished) {
                    self->_animationView.hidden = true;
                    self->_bgView.hidden = false;
                }];
//            }

            break;
    }
}

//#pragma mark - SPSBNotificationDelegate
//- (void)spsb_shouldEnterRoom {
//    [self dismissView];
//}

#pragma mark - UIScrollViewDelegate
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
    _pageControl.currentPage = scrollView.contentOffset.x / (jxh_screenWidth() + spsb_offset);
}

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
    if (scrollView != _scrollView) return;
    if (!decelerate) {
        [self endScroll:scrollView];
    }
    
}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
    if (scrollView != _scrollView) return;
    [self endScroll:scrollView];
}

- (void)endScroll:(UIScrollView *)scrollView {
    _index = scrollView.contentOffset.x / (jxh_screenWidth() + spsb_offset);
    _pageControl.currentPage = _index;
}

//#pragma mark - SPSBVideoPlayerDelegate
//- (void)spsb_videoPlayFailed:(NSError *)error {
//    [self.view showToastWithTitle:SPSBLocalize(SPSBVideoPlayFailureTipsTextStringKey)];
//    [self dismissView];
//}
//
//- (void)spsb_videoPlayStatusChanged:(SPSBVideoStatus)status {
//
//}

#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    if ([otherGestureRecognizer isKindOfClass:[UIPinchGestureRecognizer class]]) {
        return false;
    }
    return true;
}

#pragma mark - UI
- (void)setupUI {
    self.view.backgroundColor = spsb_000000_color(0.f);
    self.view.hidden = true;
    
    [self.view addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissView)]];
    
    UIPanGestureRecognizer *panGes = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panAction:)];
    panGes.delegate = self;
    [self.view addGestureRecognizer:panGes];

    [self createBgView];
    
    _animationView = UIImageView.new;
    _animationView.clipsToBounds = true;
    _animationView.contentMode = UIViewContentModeScaleAspectFill;
    [self.view addSubview:_animationView];
    
//    _playView = UIView.new;
//    [self.view addSubview:_playView];
}


- (void)createBgView {
    _bgView = UIView.new;
    _bgView.hidden = true;
    [self.view addSubview:_bgView];
    [_bgView makeConstraints:^(JXHConstraintMaker *make) {
        make.edges.equalTo(self.view);
    }];
    
    _scrollView = [UIScrollView convenienceWithBackgroundColor:spsb_clear_color()];
    _scrollView.pagingEnabled = true;
    _scrollView.delegate = self;
    [_bgView addSubview:_scrollView];
    [_scrollView makeConstraints:^(JXHConstraintMaker *make) {
        make.edges.equalTo((UIEdgeInsets){0, 0, 0, -spsb_offset});
    }];
    
    for (NSInteger i = 0; i < _spsb_maxPreview; i ++) {
        JXHZoomImageView *imageView = [[JXHZoomImageView alloc] initWithTarget:self action:@selector(dismissView)];
        imageView.tag = spsb_imageViewTag + i;
        [_scrollView addSubview:imageView];
        [imageView makeConstraints:^(JXHConstraintMaker *make) {
            make.leading.equalTo(i * (jxh_screenWidth() + spsb_offset));
            make.top.and.bottom.equalTo(0);
            make.size.equalTo((CGSize){jxh_screenWidth(), jxh_screenHeight()});
        }];
    }
    
    _pageControl = UIPageControl.new;
    _pageControl.hidesForSinglePage = true;
    [_bgView addSubview:_pageControl];
    [_pageControl makeConstraints:^(JXHConstraintMaker *make) {
        make.bottom.equalTo(-10);
        make.centerX.equalTo(self->_bgView);
    }];
}

@end

#undef spsb_offset
#undef spsb_imageViewTag