import "WFSwiperView.h"

import "WFModSafeTimer.h"

import "WFSwiperViewCell.h"

import "WFPageControl.h"

define MaxSection 20

@interface WFSwiperView()<UICollectionViewDelegate,UICollectionViewDataSource,WFModSafeTimerDelegate>
@property (nonatomic, strong ) UICollectionView *swiperView;
@property (nonatomic, strong ) WFPageControl *pageControl;

@property (nonatomic, strong ) WFModSafeTimer *timer;
@property (nonatomic, strong ) NSMutableArray *items;

@end

@implementation WFSwiperView

(instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {

  [self addSubview:self.swiperView];
  [self.swiperView registerClass:[WFSwiperViewCell class] forCellWithReuseIdentifier:@"WFSwiperViewCell"];
  self.backgroundColor  = [UIColor redColor];
  self.timer = [[WFModSafeTimer alloc]init];
  self.timer.delegate = self;
  [self.timer scheduledTimerWithTimeInterval:1.5 repeats:YES];
  
  self.pageControl = [[WFPageControl alloc]initWithFrame:CGRectMake(0, self.frame.size.height-50, self.frame.size.width, 50)];
  [self.pageControl addTarget:self action:@selector(didClickPageCo:) forControlEvents:UIControlEventValueChanged];
  self.pageControl.numberOfPages = 2;
  self.pageControl.currentPage = 0;
  self.pageControl.hidesForSinglePage =self;
  self.pageControl.pageIndicatorTintColor = [UIColor grayColor];
  self.pageControl.currentPageIndicatorTintColor = [UIColor redColor];

// [self.pageControl setValue:[UIImage imageNamed:@"select.png"] forKeyPath:@"currentPageImage"];
// [self.pageControl setValue:[UIImage imageNamed:@"common"] forKeyPath:@"pageImage"];

    [self insertSubview:self.pageControl aboveSubview:self.swiperView];
   
}
return self;

}

(void )didClickPageCo:(UIPageControl *)sender{
NSInteger page = sender.currentPage;

}

(void )startTimer :(BOOL )startOrStop{
if (startOrStop) {
[self.timer startTimer:YES];
}else{
[self.timer stopTimer];
}
}
(void )loadDatas :(NSArray *)items{
[self.items removeAllObjects];
self.items = items.mutableCopy;
// if (items.count>0) {
// [self.items insertObject:items.lastObject atIndex:0];
// [self.items addObject:items[0]];
// }
[self.timer startTimer:NO];

[self.swiperView scrollToItemAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:MaxSection/2] atScrollPosition:UICollectionViewScrollPositionRight animated:YES];
self.pageControl.numberOfPages = items.count;
}

(void)timeRuningAction{

if (self.swiperView.dragging) {
return;
}

{
NSIndexPath *currentIndexPath = [[self.swiperView indexPathsForVisibleItems] lastObject];

  NSIndexPath *currentIndexPathReset = [NSIndexPath indexPathForItem:currentIndexPath.item inSection:MaxSection/2];
  [self.swiperView scrollToItemAtIndexPath:currentIndexPathReset atScrollPosition:UICollectionViewScrollPositionLeft animated:NO];

  NSInteger nextItem = currentIndexPathReset.item +1;
  NSInteger nextSection = currentIndexPathReset.section;
  if (nextItem==self.items.count) {
      nextItem=0;
      nextSection++;
  }
  NSIndexPath *nextIndexPath = [NSIndexPath indexPathForItem:nextItem inSection:nextSection];
  NSLog(@"nextSection :%ld nextItem:%ld",nextSection,nextItem);
  [self.swiperView scrollToItemAtIndexPath:nextIndexPath atScrollPosition:UICollectionViewScrollPositionLeft animated:YES];

}
}

(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
return MaxSection;
}
(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return self.items.count;
}
(__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
WFSwiperViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"WFSwiperViewCell" forIndexPath:indexPath];
if (!cell) {
cell = [[WFSwiperViewCell alloc]init];
}
[cell loadImage: self.items[indexPath.row]];
return cell;
}
(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
UIResponder *resp = self;
while ((resp = [resp nextResponder])) {
if ([resp isKindOfClass:[UIViewController class]]) {
UIViewController *co = (UIViewController *)resp;
UIViewController *pVC = [[NSClassFromString(@"WCModHomePageViewController") alloc]init];
[co.navigationController pushViewController:pVC animated:YES];
return;
}
}
}
(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
[self.timer stopTimer];
}
(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
[self.timer startTimer:YES];
}
(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{

}

(void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{

}

(void)scrollViewDidScroll:(UIScrollView *)scrollView{

int page = (int) (scrollView.contentOffset.x/scrollView.frame.size.width+0.5)%self.items.count;
self.pageControl.currentPage =page;

}

(UICollectionView *)swiperView {
if (!_swiperView) {

  UICollectionViewFlowLayout *flayout = [[UICollectionViewFlowLayout alloc]init];
  flayout.scrollDirection             = UICollectionViewScrollDirectionHorizontal;
  flayout.minimumLineSpacing          = 0;
  flayout.minimumInteritemSpacing     = 0;
  flayout.itemSize                    = CGSizeMake(ScreenWidth, self.frame.size.height);
  _swiperView = [[UICollectionView alloc]initWithFrame:CGRectMake(0, 0, ScreenWidth, self.frame.size.height) collectionViewLayout:flayout];
  _swiperView.pagingEnabled           = YES;
  _swiperView.bounces                 = NO;
  _swiperView.showsHorizontalScrollIndicator = NO;
  _swiperView.showsVerticalScrollIndicator   = NO;
  _swiperView.dataSource              = self;
  _swiperView.delegate                = self;

}
return _swiperView;
}

(NSMutableArray *)items {
if (!_items) {
_items = [[NSMutableArray alloc]init];
}
return _items;
}
(void)dealloc
{
[self.timer removeTimer];
self.timer = nil;
NSLog(@"轮播图已销毁");
}
@end