//
//  THLanternScrollView.m
//  TreeHole
//
//  Created by iOS on 2023/2/14.
//  Copyright © 2023 CYH. All rights reserved.
//

#import "THLanternScrollView.h"
#import "THLanternScrollItemView.h"

@interface THLanternScrollView ()<UIScrollViewDelegate>


@property(nonatomic, strong)THLanternScrollItemView *firsItemView;
@property(nonatomic, strong)THLanternScrollItemView *secondItemView;
//@property(nonatomic, strong)THLanternScrollItemView *thirdItemView;

@property(nonatomic, strong)CADisplayLink *displayLink;
@property(nonatomic, assign)CGFloat offsetY;

@end

@implementation THLanternScrollView

- (void)setItemTapBlock:(void (^)(UIControl *))itemTapBlock {
    _itemTapBlock = itemTapBlock;
    self.firsItemView.itemTapBlock = itemTapBlock;
    self.secondItemView.itemTapBlock = itemTapBlock;
}

- (void)starScrollAnimate {
    if (self.displayLink && self.displayLink.paused) {
        self.displayLink.paused = NO;
    }
//
    
}
- (void)stopScrollAnimate {
    self.displayLink.paused = YES;
//    [self.scrollView setContentOffset:CGPointZero animated:NO];
}

- (void)scrollToAnimate {
//    NSLog(@"000===%.2f", self.scrollView.contentOffset.y);
    self.offsetY += 1;
    self.scrollView.contentOffset = CGPointMake(0, self.offsetY);
//    NSLog(@"y===%.2f", self.scrollView.contentOffset.y);
}


//MARK: UIScrollViewDelegate
- (void)scrollViewDidScroll:(UIScrollView *)scrollView; {
    CGFloat itemW = scrollView.qmui_width;
    CGFloat itemH = itemW / (1125.0/4872.0);
//    NSLog(@"scrollContentOffsetY == %.2f", scrollView.contentOffset.y);
    if (scrollView.contentOffset.y > (itemH * 1)) {
        self.offsetY = 0;
        self.scrollView.contentOffset = CGPointMake(0, 0);
//        [self.scrollView setContentOffset:CGPointZero animated:NO];
        return;
    }
//    if (scrollView.contentOffset.y > (itemW * 1.5)) {
//        self.firsItemView.qmui_top = self.thirdItemView.qmui_bottom;
//    }
}


//MARK: - life
- (void)setupSubViews {
    _displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(scrollToAnimate)];
    _displayLink.paused = YES;
    [_displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
    
    _scrollView = [UIScrollView creatViewInSuperView:self];
    _scrollView.showsVerticalScrollIndicator = NO;
    _scrollView.delegate = self;
    _scrollView.scrollEnabled = NO;
    
    _firsItemView = [THLanternScrollItemView creatViewInSuperView:_scrollView];
    
    _secondItemView = [THLanternScrollItemView creatViewInSuperView:_scrollView];
    
//    _thirdItemView = [THLanternScrollItemView creatViewInSuperView:_scrollView];
}

- (void)layoutSubviews {
    [super layoutSubviews];
    self.scrollView.frame = self.bounds;
    
//    背景图尺寸1125x4872
    CGFloat itemW = self.qmui_width;
    CGFloat itemH = itemW / (1125.0/4872.0);
    self.firsItemView.frame = CGRectMake(0, 0, itemW, itemH);
    
    self.secondItemView.frame = CGRectMake(0, itemH, itemW, itemH);
//
//    self.thirdItemView.frame = CGRectMake(0, itemH * 2, itemW, itemH);
    
    self.scrollView.contentSize = CGSizeMake(0, itemH * 3);
    
}

@end