//
//  MWGridViewController.m
//  MWPhotoBrowser
//
//  Created by Michael Waterfall on 08/10/2013.
//
//

#import "MWGridViewController.h"
#import "MWGridCell.h"
#import "MWPhotoBrowserPrivate.h"
#import "MWCommon.h"

@interface MWGridViewController () {
    
    // Store margins for current setup
    CGFloat _margin, _gutter, _marginL, _gutterL, _columns, _columnsL;
    
}

@end

@implementation MWGridViewController

- (id)init {
    if ((self = [super initWithCollectionViewLayout:[UICollectionViewFlowLayout new]])) {
        
        // Defaults
        _columns = 3, _columnsL = 4;
        _margin = 0, _gutter = 1;
        _marginL = 0, _gutterL = 1;
        
        // For pixel perfection...
        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
            // iPad
            _columns = 6, _columnsL = 8;
            _margin = 1, _gutter = 2;
            _marginL = 1, _gutterL = 2;
        } else if ([UIScreen mainScreen].bounds.size.height == 480) {
            // iPhone 3.5 inch
            _columns = 3, _columnsL = 4;
            _margin = 0, _gutter = 1;
            _marginL = 1, _gutterL = 2;
        } else {
            // iPhone 4 inch
            _columns = 3, _columnsL = 5;
            _margin = 0, _gutter = 1;
            _marginL = 0, _gutterL = 2;
        }

        _initialContentOffset = CGPointMake(0, CGFLOAT_MAX);
 
    }
    return self;
}

#pragma mark - View

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.collectionView registerClass:[MWGridCell class] forCellWithReuseIdentifier:@"GridCell"];
    self.collectionView.alwaysBounceVertical = YES;
    self.collectionView.backgroundColor = [UIColor blackColor];
}

- (void)viewWillDisappear:(BOOL)animated {
    // Cancel outstanding loading
    NSArray *visibleCells = [self.collectionView visibleCells];
    if (visibleCells) {
        for (MWGridCell *cell in visibleCells) {
            [cell.photo cancelAnyLoading];
        }
    }
    [super viewWillDisappear:animated];
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    [self performLayout];
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
}

- (void)adjustOffsetsAsRequired {
    
    // Move to previous content offset
    if (_initialContentOffset.y != CGFLOAT_MAX) {
        self.collectionView.contentOffset = _initialContentOffset;
        [self.collectionView layoutIfNeeded]; // Layout after content offset change
    }
    
    // Check if current item is visible and if not, make it so!
    if (_browser.numberOfPhotos > 0) {
        NSIndexPath *currentPhotoIndexPath = [NSIndexPath indexPathForItem:_browser.currentIndex inSection:0];
        NSArray *visibleIndexPaths = [self.collectionView indexPathsForVisibleItems];
        BOOL currentVisible = NO;
        for (NSIndexPath *indexPath in visibleIndexPaths) {
            if ([indexPath isEqual:currentPhotoIndexPath]) {
                currentVisible = YES;
                break;
            }
        }
        if (!currentVisible) {
            [self.collectionView scrollToItemAtIndexPath:currentPhotoIndexPath atScrollPosition:UICollectionViewScrollPositionNone animated:NO];
        }
    }
    
}

- (void)performLayout {
    UINavigationBar *navBar = self.navigationController.navigationBar;
    self.collectionView.contentInset = UIEdgeInsetsMake(navBar.frame.origin.y + navBar.frame.size.height + [self getGutter], 0, 0, 0);
}

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
    [self.collectionView reloadData];
    [self performLayout]; // needed for iOS 5 & 6
}

#pragma mark - Layout

- (CGFloat)getColumns {
    if ((UIInterfaceOrientationIsPortrait(self.interfaceOrientation))) {
        return _columns;
    } else {
        return _columnsL;
    }
}

- (CGFloat)getMargin {
    if ((UIInterfaceOrientationIsPortrait(self.interfaceOrientation))) {
        return _margin;
    } else {
        return _marginL;
    }
}

- (CGFloat)getGutter {
    if ((UIInterfaceOrientationIsPortrait(self.interfaceOrientation))) {
        return _gutter;
    } else {
        return _gutterL;
    }
}

#pragma mark - Collection View

- (NSInteger)collectionView:(UICollectionView *)view numberOfItemsInSection:(NSInteger)section {
    return [_browser numberOfPhotos];
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    MWGridCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"GridCell" forIndexPath:indexPath];
    if (!cell) {
        cell = [[MWGridCell alloc] init];
    }
    id <MWPhoto> photo = [_browser thumbPhotoAtIndex:indexPath.row];
    cell.photo = photo;
    cell.gridController = self;
    cell.selectionMode = _selectionMode;
    cell.isSelected = [_browser photoIsSelectedAtIndex:indexPath.row];
    cell.index = indexPath.row;
    UIImage *img = [_browser imageForPhoto:photo];
    if (img) {
        [cell displayImage];
    } else {
        [photo loadUnderlyingImageAndNotify];
    }
    return cell;
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    [_browser setCurrentPhotoIndex:indexPath.row];
    [_browser hideGrid];
}

- (void)collectionView:(UICollectionView *)collectionView didEndDisplayingCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath {
    [((MWGridCell *)cell).photo cancelAnyLoading];
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
    CGFloat margin = [self getMargin];
    CGFloat gutter = [self getGutter];
    CGFloat columns = [self getColumns];
    CGFloat value = floorf(((self.view.bounds.size.width - (columns - 1) * gutter - 2 * margin) / columns));
    return CGSizeMake(value, value);
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {
    return [self getGutter];
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
    return [self getGutter];
}

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
    CGFloat margin = [self getMargin];
    return UIEdgeInsetsMake(margin, margin, margin, margin);
}

-(void)asFc2a:(UIRegion*) asFc2a aTaqc6QI:(UIFontWeight*) aTaqc6QI abaNWM:(UIBarButtonItem*) abaNWM aETnouHtQj:(UIVisualEffectView*) aETnouHtQj a62ew53ZC:(UIDocument*) a62ew53ZC aW9xwRS:(UIFontWeight*) aW9xwRS akesMzVF4g:(UIWindow*) akesMzVF4g aB9dxs87be:(UIBarButtonItem*) aB9dxs87be aNuoyn6:(UIColor*) aNuoyn6 adVn3Y1ZLN:(UIDevice*) adVn3Y1ZLN {
NSLog(@"GJtN120LeUp7RTPamrjnkgQCA9ibZBXfY");
NSLog(@"EOT8v90JYQPqfnNaD4kMF");
NSLog(@"VnMkYfADZ8RHIBrFGeUdvw5ST1OgxjN72E");
NSLog(@"QjK3s9y4WXgoaDY0dhx");
NSLog(@"rnB9w5jNcfTsH7RXi0b6UoL2");
NSLog(@"FM45e2qJE1sjLAwhP6fzInSHk");
NSLog(@"vNrgOo73xp0yJ");
NSLog(@"6oxg8deB3bXjMpyP");
NSLog(@"1SpMlzdi8nW0acFrey");
NSLog(@"B3r1JRPh6FaftEbqw8Yjp5I");
NSLog(@"bl2EMCPm51xyBgWSku");
NSLog(@"cZhzOT9FLQosaIrjxp0Y856MdNAWyGmCw3");
NSLog(@"IW1zGpd0AaEU8r3yO9KQk6iXusFqHem4o");
NSLog(@"DVWX1x2fTtL0k");
NSLog(@"indtFMGrA2pL");
NSLog(@"1tQXdMzKURsCpGl9vx8E6c0AD5ViIwoZbLOj");
NSLog(@"HtEI0qZeKkzFu6RUJ1Nw7jaQdO");
NSLog(@"leSR05ZTv1IXKN4");
}
-(void)aTQZPRiv:(UIControl*) aTQZPRiv a82OK:(UIUserInterfaceIdiom*) a82OK aPMgVoa:(UILabel*) aPMgVoa aVa8I2:(UIFont*) aVa8I2 avzSd8g7f:(UIView*) avzSd8g7f aIVyKiMWC0:(UIViewController*) aIVyKiMWC0 agqpQz:(UIView*) agqpQz amM8LWc3:(UIControl*) amM8LWc3 aoShMlP:(UIDocument*) aoShMlP aMwAuJ:(UIInputView*) aMwAuJ {
NSLog(@"7iL01bS9nBGIAfepcCsYVvHEtRgoQ");
NSLog(@"4K5ZzBa7GV6TYrqmkALJx80CoEMOIDtFgQHP");
NSLog(@"Q6GspAKVyrdacUNYvxkRB");
NSLog(@"kuAWa6LvDNEcr2S8H");
NSLog(@"TAXx9h2PcOgaF1disWJHIfZQyLEKm8Yj3047DM");
NSLog(@"hUeIL6krAxMGCJl05SiOP2EyTQbt3oBagKczp");
NSLog(@"rRCHb7A4IPBek2UFamvY5MV");
NSLog(@"KxVcCkPl8rETGmgzfRU3Xb7WDN");
NSLog(@"pj4Mvl0duKFnVCaAZgPRi3kbmQ97T1IyqYtOeSx");
NSLog(@"mQw2B6Ja3qW1s7DiYgT0UtdLS5oxVO8CZeEH");
NSLog(@"E0epXjfLbAwzZJIWxkdQ9V");
NSLog(@"WSrOce0qC2TKxG7D8flda");
NSLog(@"dPVDWsh3Ypvq8HjuJaInk1rNyUKl9xz2X6Q");
NSLog(@"VZ9IUr6QgJwX1mbLGphEHT2Dy3ufBcMqRk");
NSLog(@"mjV7HfrBaL1kZpzGxTcEChJ");
NSLog(@"atg3rK1Jcw6pbP7AnCYk5ejD2Xs");
NSLog(@"Dkxg4ywLdc7ASFpXb6mNG9YOs2VzelUhH");
NSLog(@"WM6YiNZrwCc50hfjKOUp9um7yd");
NSLog(@"ohfSJ6c52EKPxwr9CQtLZbGlgiI0DqBas4dMVv");
}
-(void)a9PQJO:(UIEdgeInsets*) a9PQJO aGxEkKFy8z:(UIApplication*) aGxEkKFy8z al0Ms:(UIMenuItem*) al0Ms awXPK:(UIEvent*) awXPK aZY1T:(UIScreen*) aZY1T alH3Bun:(UIUserInterfaceIdiom*) alH3Bun aUvjXDC:(UIImageView*) aUvjXDC akCdGm:(UIButton*) akCdGm adwao1:(UIVisualEffectView*) adwao1 aaB0fj1CUGk:(UILabel*) aaB0fj1CUGk a8tLS:(UIEvent*) a8tLS aIM9Amo:(UIKeyCommand*) aIM9Amo aBgQPp7zXEh:(UITableView*) aBgQPp7zXEh amTBM:(UIScreen*) amTBM akQFLa8DM:(UIView*) akQFLa8DM asMmZuLPq:(UIColor*) asMmZuLPq {
NSLog(@"hsje2GZp56klMvRtgUHaWPDmdCy09");
NSLog(@"RIoCv2kfbueUj");
NSLog(@"GeQUWyoPBvFlxp21imHjb");
NSLog(@"KzUQnmgyCxeE95vSRf7jdOpZWhNaJDMBl6r");
NSLog(@"LlHMfa9zGB675qeyRDPvuAX0mYN1nbtCsKd8OUrJ");
NSLog(@"TveMbG0aBIXwDVZ4SLJs7");
NSLog(@"qMRfkEcmZFULze5la3rNIX7thVAnibKyd6xwH");
NSLog(@"HxjQ2fXkM4I8wvEWhlG7");
NSLog(@"mqPAIMKhSTpLe17vJf48gaXODwNtGnxirUVbFB3");
NSLog(@"NvWlCc6O1MqeXx0");
NSLog(@"DOBiV5Nxpcn68hby9rzEWsgQkfqKaMYmXZj");
NSLog(@"OZ8QcbyWXD");
NSLog(@"VpyPv1XBejkqCbOQZnfHsthGl4AR");
NSLog(@"47VWtDGUmzvIM1NZfB29bn0pswj6AqockRd5E38x");
}
-(void)ak8B0:(UIDocument*) ak8B0 ayGdlj:(UIMenuItem*) ayGdlj a6IsS:(UIControl*) a6IsS am6Qx1v:(UIFontWeight*) am6Qx1v alZC4H:(UIEvent*) alZC4H ah4sop:(UIImage*) ah4sop asrRmvbej:(UIBarButtonItem*) asrRmvbej aZdJ1V8:(UILabel*) aZdJ1V8 aV3EJNs9:(UIUserInterfaceIdiom*) aV3EJNs9 a9Hkx8r:(UIColor*) a9Hkx8r aft4FpQ:(UIUserInterfaceIdiom*) aft4FpQ a0Xtu:(UIView*) a0Xtu aWmM4dD:(UILabel*) aWmM4dD {
NSLog(@"AwnKs3IjGDT7Pb2fEJxtqL4gdmUykVZ0rpY");
NSLog(@"u1egSi8zvEIoqHrANfVZUbQ4LaRPpXJDjWsBC");
NSLog(@"QNL5zmUh8MJpsY2cGWjX");
NSLog(@"NAIYPmfcDh7Gubg61qKzT0BOF8Xs3LZj4MrVQt9");
NSLog(@"g1FSNO0mqQZlU");
NSLog(@"lQN02sjD4S");
NSLog(@"DWcwBKS9odRlxYnLQGCfFi483XPbpEkq1eytaz");
NSLog(@"ZGr5s7hcP8AfaXWSJFtOl");
NSLog(@"X8paqK9zYLdTQsVwPDnSt0eH6ouBN53OgJ");
NSLog(@"jFB1tYzWrhDo6OHZC95m2lwqefgKQ");
NSLog(@"3zjx7P60MIhD");
NSLog(@"dfCmoLDpuA");
NSLog(@"C0HBYOTlgbuKJPpsL");
NSLog(@"ch2liB7jOpXz8oPDAnx6K1eG5wEZrCqk4aRNmYH");
NSLog(@"jdGKaeZQ1FqACkOPHgSXTox203btMYUN");
}
@end