Z6MenuPanoramaView.m

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//
//  Z6MenuPanoramaView.m
//  TodaysMenu
//
//  Created by Don Zeek on 3/13/17.
//  Copyright © 2017 net.dzeek.y2015.ios.portfolio. All rights reserved.
//

#import "Z6MenuPanoramaView.h"
#import "Z5DataController.h"
#import "Y4NutritionCollectionViewCell.h"
#import "Y4NutritionCollectSelectViewCell.h"

@interface Z6MenuPanoramaView ()
@property (nonatomic, strong) NSDateFormatter *mDateFormatter;
@property (nonatomic, strong) UIButton *dateButton;
@end

@implementation Z6MenuPanoramaView

id<Z6MenuPanoramaDelegate> menuPanoramaDelegate;

UICollectionViewFlowLayout *flowLayout = nil;
UICollectionView *collectionView;
CGSize defaultCellSize;
CGSize selectCellSize;
NSInteger selectedRow;
UIColor *backgroundShade;
static NSString *cellIdentifier = @"y4Cell";
static NSString *selectedCellIdentifier = @"y4SelectedCell";

- (instancetype) initWithFrame:(CGRect)frame andDelegate:(id<Z6MenuPanoramaDelegate>)dele
{
    self = [super initWithFrame:frame];
    menuPanoramaDelegate = dele;
    backgroundShade = [UIColor colorWithRed:226.0/256 green:201.0/256 blue:114.0/256 alpha:1.0];
    // backgroundShade = [[Z5DataController alloc] wheatColor];

    [self initialize];
    return self;
}

- (void) initialize
{
    flowLayout = [[UICollectionViewFlowLayout alloc] init];
    [flowLayout setScrollDirection:UICollectionViewScrollDirectionHorizontal];

    _mDateFormatter = [[NSDateFormatter alloc] init];
    [_mDateFormatter setDateStyle:NSDateFormatterMediumStyle];
    [_mDateFormatter setTimeStyle:NSDateFormatterShortStyle];

    // start definition of collection view layout - class var, used many places
    float defaultCellwidth = 174;
    float defaultCellheight = 218;
    defaultCellSize = CGSizeMake(defaultCellwidth, defaultCellheight);
    float selectCellWidth = 256;
    float selectCellHeight = 280;
    selectCellSize = CGSizeMake(selectCellWidth, selectCellHeight);
    // end, for now - start definition of collection view layout
    
    // float initialCollectViewHgt = selectCellHeight + 18;
    float initialCollectViewHgt = selectCellHeight + 6;
    CGRect collectionViewFrame = CGRectMake(10, 36, self.bounds.size.width-12, initialCollectViewHgt);
    collectionView = [[UICollectionView alloc] initWithFrame:collectionViewFrame collectionViewLayout:flowLayout];
    [collectionView setDelegate:self];
    [collectionView setDataSource:self];
    // [collectionView setBackgroundColor:[UIColor lightGrayColor]];
    [collectionView setBackgroundColor:[[Z5DataController alloc] wheatColor]];
    [self addSubview:collectionView];
    
    // add a button annotated with today's date, And added it to the view
    CGRect dateFrame = CGRectMake(60.0, 4.0, 240.0, 28.0);
    self.dateButton = [[UIButton alloc] initWithFrame:dateFrame];
    [self.dateButton addTarget:self action:@selector(clickClearDay) forControlEvents:UIControlEventTouchUpInside];
    [self.dateButton setOpaque:YES];
    [self.dateButton setBackgroundColor:[UIColor cyanColor]];
    [self addSubview:self.dateButton];
    // end - add a button annotated with today's date, And added it to the view
    
    // setup how cells are built
    [collectionView registerClass:[Y4NutritionCollectionViewCell class] forCellWithReuseIdentifier:cellIdentifier];
    [collectionView registerClass:[Y4NutritionCollectSelectViewCell class] forCellWithReuseIdentifier:selectedCellIdentifier];
    collectionView.delegate = self;
    // end - setup how cells are built
    
    // initialize class var with all menu items for (for display by the gallery?)
    Z5LocalDataController *localData = [[Z5DataController sharedInstance] localDataController];
    NSNumber *galleryChoice = [NSNumber numberWithInt:1];
    NSArray *tmp = [localData retrieveAllMenuItems:galleryChoice];
    NSLog(@"Z6MenuPanoramaView.initialize: count of all menu items in d/b: %ld", (unsigned long)[tmp count]);
    [self setMenuItems:[[NSMutableArray alloc] initWithArray:tmp]];
    // end - initialize class var with all menu items for (for display by the gallery?)
   
    if (0 < [_menuItems count]) {
        NSUInteger selectindex;
        if ([menuPanoramaDelegate getSelectedGalleryRow: (NSUInteger *) &selectindex]) {
            MenuItem *selectedItem = [_menuItems objectAtIndex:selectindex];
            [self setFocusMenuItem:selectedItem];
            NSLog(@"Z6MenuPanoramaView.initialize: selectedRow: %ld", (long)selectedRow);
            [self centerGalleryItem:selectedRow];
        } else {
            selectedRow = -1;
        }
    }
    
    [self setCurrentDate];
    
    [self setBackgroundColor:backgroundShade];
}

- (void) appear:(CGRect)bound
{
    NSNumber *galleryChoice = [NSNumber numberWithInt:1];
    Z5LocalDataController *localData = [[Z5DataController sharedInstance] localDataController];
    NSArray *tmp = [localData retrieveAllMenuItems:galleryChoice];
    // NSLog(@"Z6MenuPanoramaView.appear: count of all menu items in d/b: %ld", (unsigned long)[tmp count]);
    [self setMenuItems:[[NSMutableArray alloc] initWithArray:tmp]];
    [self reload];
    
    CGRect collectionViewFrame = CGRectMake(10, 36, self.bounds.size.width-20, [self collectionViewHeight]);
    [collectionView setFrame:collectionViewFrame];
    if (0 <= selectedRow) {
        [self centerGalleryItem:selectedRow];
    }
}

- (void) reload
{
    NSLog(@"MenuPanorama.reload: selected row: %ld", (long)selectedRow);
    [collectionView reloadData];
    [collectionView setNeedsDisplay];
    [self setCurrentDate];
}

- (void) setCurrentDate
{
    NSString *todayDate = [_mDateFormatter stringFromDate:[NSDate dateWithTimeIntervalSinceNow:0]];
    [Z5DataController labelizeButton:self.dateButton withText:todayDate];
}
- (float) collectionViewHeight
{
    float portalHeight = selectCellSize.height
    + [collectionView layoutMargins].top
    + [collectionView layoutMargins].bottom
    + [collectionView contentInset].top
    + [collectionView contentInset].bottom + 8;
    
    
    NSLog(@"Z6MenuPanoramaView.collectionViewHeight: portalHeight: %3.2f", portalHeight);
    return portalHeight;
}

#pragma mark - <Z6ContainedView>
- (float) heightRequirement
{
    // dateButton does not show up in Menu-Record
    float dateNoticeVert = self.dateButton.bounds.size.height;
    
    float portalHeight = [self collectionViewHeight] + dateNoticeVert + 6;
    
    // portalHeight += 100.0;  // this stretches gray portion (headerView.collectionView) inside brown area (headerView)
   
    if (selectedRow > 0) {
        portalHeight += 16;
    }
    
    // NSLog(@"MenuPanorama.heightRequirement: dateNoticeVert: %3.2f  portalHeight: %3.2f",
    //      dateNoticeVert, portalHeight);
    
    return portalHeight;
}

#pragma mark - <UICollectionViewDelegateFlowLayout>
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView
                        layout:(UICollectionViewLayout*)collectionViewLayout
        insetForSectionAtIndex:(NSInteger)section {
    
    // NSLog(@"Z6MenuPanoramaView.insetForSectionAtIndex: %ld", (long)section);
    
    UIEdgeInsets ret = UIEdgeInsetsMake(0.0, 10.0, 0.0, 10.0);
    return ret;
}

#pragma mark - <UICollectionViewDataSource>
  
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
    
    NSInteger ret = 1;
    
    return ret;
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    
    NSInteger ret = [[self menuItems] count];
    // NSLog(@"Z6MenuPanoramaView.numberOfItemsInSection: menuItem count: %ld", ret);
    
    return ret;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    
    int imageHeight = 120;  //
    int selectedImageHeight = 160;
    int outputImageHeight = 0;
    
    // UICollectionViewFlowLayout *viewLayout = collectionView.collectionViewLayout;
    // UICollectionView *colView = collectionView;
    
    
    Y4NutritionCollectionViewCell *cell;
    if (selectedRow == indexPath.row) {
        cell = (Y4NutritionCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:selectedCellIdentifier forIndexPath:indexPath];
        outputImageHeight = selectedImageHeight;
    } else {
        cell = (Y4NutritionCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
        outputImageHeight = imageHeight;
    }
    // NSLog(@"NutritionCollectController.cellForItemAtIndexPath: tag: %ld", [[cell textLabel] tag]);
    
    MenuItem *cellItem = [[self menuItems] objectAtIndex:indexPath.row];
    UIImage *photoImage = [UIImage imageWithData:cellItem.photo];
    NSString *itemName = [cellItem name];
    if (!itemName) {
        itemName = @"NameLess";
    }
    
    CGSize photoSize = [photoImage size];
    float resizeRatio = photoSize.height / (float)outputImageHeight;
    UIImage *keptImage = [UIImage imageWithCGImage:[photoImage CGImage]
                                             scale:photoImage.scale * resizeRatio
                                       orientation:(photoImage.imageOrientation) ];
    
    // NSString *rkey = [Z5DataController produceRandomkey];
    [cell.imageView setImage:keptImage];
    [Z5DataController labelize:cell.textLabel withText:itemName];
    
    return cell;
}


#pragma mark - <UICollectionViewDelegate>

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    if (selectedRow == indexPath.row) {
        [self clickClearDay];
    } else {
        selectedRow = indexPath.row;
        
        NSLog(@"Z6MenuPanoramaView.didSelectItem: selectedRow: %ld", (long)selectedRow);
        
        NSUInteger tCount = [[self menuItems] count];
        if (tCount > [indexPath row]) {
            
            MenuItem *selectedItem =  [[self menuItems] objectAtIndex:[indexPath row]];
            [self setFocusMenuItem:selectedItem];
            [menuPanoramaDelegate clickedMenuItem:selectedItem atRow:selectedRow];
        }
        [self reload];
    }
    [self setNeedsDisplay];
    [self centerGalleryItem:[indexPath row]];
}
- (void) centerGalleryItem:(NSUInteger)indexRow
{
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:indexRow inSection:0];
    [collectionView scrollToItemAtIndexPath:indexPath atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:YES];
}
- (CGSize)collectionView:(UICollectionView *)collectionView
                  layout:(UICollectionViewLayout *)collectionViewLayout
  sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    CGSize ret;
    
    if (indexPath.row == selectedRow) {
        ret = selectCellSize;
    } else {
        ret = defaultCellSize;
    }
    return ret;
}

- (NSMutableArray *)redetermineMenuItems
{
    Z5LocalDataController *localData = [[Z5DataController sharedInstance] localDataController];
    
    NSNumber *galleryChoice = [NSNumber numberWithInt:1];
    NSArray *menuItemsNow = [localData retrieveAllMenuItems:galleryChoice];
    Boolean dbMenuItemFoundInGalllery = NO;
    for (MenuItem *dbMenuItem in menuItemsNow) {
        NSString *miNowRandomkey = dbMenuItem.randomkey;
        for (MenuItem *galleryMenuItem in [self menuItems]) {
            // NSLog(@"NutritionCollectionView.determineMenuItems: scan-in key: %@  alreadykey: %@", miNowRandomkey, galleryMenuItem.randomkey);
            
            if ([miNowRandomkey isEqualToString:galleryMenuItem.randomkey]) {
                /*
                 * this block is encountered when a database menu item is found in the gallery menu items.
                 * a flag will be set indicating item is not to be added to gallery display,
                 *
                 */
                dbMenuItemFoundInGalllery = YES;
                break;
            }
        }
        if (!dbMenuItemFoundInGalllery) {
            /*
             * this block is encountered when a database menu item is not found in the gallery menu items.
             * Here it is added at the beginning of the gallery.
             */
            dbMenuItem.galleryPositionNo = [NSNumber numberWithLong:[localData getPrevGalleryPositionIdx]];
            [[self menuItems] addObject:dbMenuItem];
        }
    }
    
    for (MenuItem *mi in [self menuItems]) {
        NSLog(@"NutritionCollectionView.redetermineMenuItems: positionInGallery: %@", [mi galleryPositionNo]);
    }
    return [self menuItems];
}

#pragma mark - JSON

-(NSArray *)menuParameterArray: (NSString *)jsonString
{
    NSLog(@"Z6MenuPanoramaView.menuParameterArray: jsonString: %@", jsonString);
    NSData *jsonReturnData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
    NSError *err;
    if (jsonReturnData) {
        NSObject *jsonSerialized = [NSJSONSerialization JSONObjectWithData:jsonReturnData options:NSJSONReadingAllowFragments error:&err];
        if (jsonSerialized) {
            NSString *jsonSerializedClass = NSStringFromClass([jsonSerialized class]);
            NSLog(@"Z6MenuPanoramaView.menuParameterArray: valid data, top class: %@", jsonSerializedClass);
            if (([jsonSerializedClass isEqualToString:@"__NSCFDictionary"])
                || ([jsonSerializedClass isEqualToString:@"__NSSingleEntryDictionaryI"])) {
                NSDictionary *jsonSerializedDict = (NSDictionary *)jsonSerialized;
                NSObject *uNums = [jsonSerializedDict objectForKey:@"usdaNumbers"];
                NSString *uNumsClass = NSStringFromClass([uNums class]);
                NSLog(@"Z6MenuPanoramaView.menuParameterArray: uNumsClass: %@", uNumsClass);
                NSArray *jsonSerializedArray = (NSArray *)uNums;
                return jsonSerializedArray;
            } else {
                return nil;
            }
        } else {
            return nil;
        }
    } else {
        return nil;
    }
}

#pragma mark button action

- (void) clickClearDay
{
    NSLog(@"Z6MenuPanoramaView.clickClearDay");
    self.focusMenuItem = nil;
    selectedRow = -1;

    [menuPanoramaDelegate clickClearDay];
    [self reload];
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

@end