//
//  PhotosViewController.m
//  tongxin
//
//  Created by WeiChaoZheng on 2018/6/19.
//  Copyright © 2018年 xTT. All rights reserved.
//

#import "PhotosViewController.h"

@interface PhotosViewController ()
@property (nonatomic, strong) UILabel * showLabel;
@end


@implementation PhotosViewController
-(void)setCurrentIndex:(NSInteger)currentIndex{
    _currentIndex = currentIndex;
    NSString *textCount = [NSString stringWithFormat:@"%zd / %zd",_currentIndex+1,self.dataSouce.count];
    self.showLabel.text = textCount;
}
-(NSArray *)dataSouce{
    if(!_dataSouce){
        _dataSouce = [NSMutableArray array];
    }
    return _dataSouce;
}
-(NSMutableArray *)dataViews{
    if(!_dataViews){
        _dataViews = [NSMutableArray array];
    }
    return _dataViews;
}
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor blackColor];
    [self initView];
    [self reloadData];

}

-(void) initView{
    
    //右侧导航栏添加个按钮 删除模式
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage: [UIImage imageNamed:@"icon_delete"]
                                                                              style:UIBarButtonItemStylePlain
                                                                             target:self
                                                                             action:@selector(deletePhotoAction)];
    
    self.scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, SWIDTH, SHEIGHT-64)];
    self.scrollView.delegate = self;
    [self.scrollView setPagingEnabled:YES];
    [self.scrollView setBouncesZoom:YES];
    ///设置最大和最小缩放比例
    self.scrollView.minimumZoomScale = 1.0;
    self.scrollView.maximumZoomScale = 2.0;
    [self.view addSubview:self.scrollView];
    
    self.showLabel = [[UILabel alloc] initWithFrame:CGRectMake((SWIDTH-100)/2,SHEIGHT-64-50-10, 100, 50)];
    self.showLabel.font = [UIFont systemFontOfSize:17];
    self.showLabel.textAlignment = 1;
    self.showLabel.textColor = [UIColor whiteColor];
    [self.view addSubview: self.showLabel];
    
}

-(void)reloadData{
    for (Photo *photo in self.dataSouce) {
        photo.isSelect = NO;
    }
    if(self.dataSouce.count == 0){
        [self.navigationController popViewControllerAnimated:YES];
        return;
    }
    if (self.dataViews.count > 0) {
        for (UIView* view in self.dataViews) {
            [view removeFromSuperview];
        }
        [self.dataViews removeAllObjects];
    }
    if(self.dataSouce.count != 0){
        NSInteger count = self.dataSouce.count;
        for (int i = 0; i < count ; i++) {
//            Photo *photo = self.dataSouce[i];
//            XLZoomingScrollView * view = [[XLZoomingScrollView alloc] initWithFrame:CGRectMake(i*SWIDTH, 0, SWIDTH, SHEIGHT-64)];
////            [view.contentImage sd_setImageWithURL:[NSURL URLWithString:photo.url]];
//            [self.dataViews addObject:view];
//            [self.scrollView addSubview:view];
        }
        
        self.scrollView.contentSize = CGSizeMake(self.dataSouce.count * SWIDTH, 0);
        [self.scrollView setContentOffset:CGPointMake(self.currentIndex*SWIDTH, 0) animated:NO];
        [self scrollViewWillBeginDragging:self.scrollView];
//        [self setDataWithIndex:self.currentIndex];
    }
}

/**
 删除照片
 */
-(void)deletePhotoAction{
    WEAKSELF
    LGAlertView *alertView = [[LGAlertView alloc] initWithTitle:@"注意" message:@"确认删除图片?" style:LGAlertViewStyleAlert buttonTitles:@[@"确定"] cancelButtonTitle:@"取消" destructiveButtonTitle:nil actionHandler:^(LGAlertView *alertView, NSString *title, NSUInteger index) {
        
        @try {
            Photo *photo = weakSelf.dataSouce[self.currentIndex];
            NSMutableArray *arr = [NSMutableArray arrayWithArray:@[photo]];
            [weakSelf deleteActionWith:arr];
        } @catch (NSException *exception) {
            
        }
 
    } cancelHandler:nil destructiveHandler:nil];
    
    [alertView showAnimated:YES completionHandler:nil];
}

-(void)deleteActionWith:(NSMutableArray *)arr{
    WEAKSELF
    [Photo deletePhotos:arr
                success:^{
                    //删除成功 刷新数据
                    NSMutableArray *dataArr = [NSMutableArray arrayWithArray:weakSelf.dataSouce];
                    [dataArr removeObjectAtIndex:weakSelf.currentIndex];
                    weakSelf.dataSouce = dataArr;
//                    [weakSelf.dataSouce removeObjectAtIndex:weakSelf.currentIndex];
                    
                    if(weakSelf.dataSouce != 0){
                        if(weakSelf.currentIndex > 0 && weakSelf.dataSouce.count > 1){
                            weakSelf.currentIndex -= 1;
                        }else{
                            weakSelf.currentIndex = 0;
                        }
                    }
                    
                    [weakSelf reloadData];
                } failure:^{
                    
                }];
}
-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
    //当前的标识
    int index =(int)(scrollView.contentOffset.x / SWIDTH);
    self.currentIndex = index;
    [self setDataWithIndex:index];
}

-(void)setDataWithIndex:(int)index
{
//    if(self.dataViews.count > index){
//        if(index > 1){ //表示左边图 存在
//            XLZoomingScrollView *view1 =  self.dataViews[index-1];
//            Photo *photo1 = self.dataSouce[index-1];
//            if(!photo1.isSelect){
//                [view1 setShowHighQualityImageWithURL:[NSURL URLWithString:photo1.url] placeholderImage:nil];
//                photo1.isSelect = YES;
//            }
//
//        }
//        if(index+1 < self.dataViews.count-1){ //表示右边图 存在
//            XLZoomingScrollView *view3 =  self.dataViews[index+1];
//            Photo *photo3 = self.dataSouce[index+1];
//            if(!photo3.isSelect){
//                [view3 setShowHighQualityImageWithURL:[NSURL URLWithString:photo3.url] placeholderImage:nil];
//                photo3.isSelect = YES;
//            }
//        }
//
//        XLZoomingScrollView *view2 =  self.dataViews[index];
//        Photo *photo2 = self.dataSouce[index];
//        if(!photo2.isSelect){
//            [view2 setShowHighQualityImageWithURL:[NSURL URLWithString:photo2.url] placeholderImage:nil];
//            photo2.isSelect = YES;
//        }
//        NSTimeInterval time = [photo2.time doubleValue];
//        NSDateFormatter *formatter = [NSDateFormatter new];
//        [formatter setDateFormat:@"MM月dd日 HH:mm:ss"];
//        self.title = [formatter stringFromDate:[NSDate dateWithTimeIntervalSince1970:time]];
//    }
}

-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
    //当前的标识
    int index =(int)(scrollView.contentOffset.x / SWIDTH);
    self.currentIndex = index;
    [self setDataWithIndex:index];
}



@end