ImageHelper.m

#import "ImageHelper.h"
#import "EntryHelper.h"

@implementation ImageHelper
@synthesize image;

- (UIImage *)getFullScreenImage{
    return [UIImage imageWithContentsOfFile:[self getFullScreenImagePath]];
}

- (UIImage *)getThumbnailImage{
    return [UIImage imageWithContentsOfFile:[self getThumbnailImagePath]];
}

- (UIImage *)getOriginalImage{
    return [UIImage imageWithContentsOfFile:[self getOriginalImagePath]];
}

- (NSString *)getImageDirectory {
    if(image.insertDate == nil){
        image.insertDate = [NSDate date];
    }
    EntryHelper *helper = [[EntryHelper alloc] init];
    helper.entry = image.entry;
    NSString *imageDirectory = [[helper getEntryDirectoryPath] stringByAppendingPathComponent:[image.insertDate stringFileDate]];
    NSLog(@"Getting Image in:%@", imageDirectory);
    [helper release];
    return imageDirectory;
}

- (NSString *)getThumbnailImagePath{
    return [[self getImageDirectory] stringByAppendingPathComponent:@"thumbnail.png"];
}

- (NSString *)getFullScreenImagePath{
    return [[self getImageDirectory] stringByAppendingPathComponent:@"fullScreen.png"];
}

- (NSString *)getOriginalImagePath{
    return [[self getImageDirectory] stringByAppendingPathComponent:@"original.png"];
}

+ (NSArray *)helpersFromArray:(NSArray *)images{
    NSMutableArray *imageHelpers = [[[NSMutableArray alloc] initWithCapacity:[images count]] autorelease];
    for (Image *image in images) {
        ImageHelper *helper = [[ImageHelper alloc] init];
        helper.image = image;
        [imageHelpers addObject:helper];
        [helper release];
    }
    return imageHelpers;
}

+ (NSArray *)helpersFromEntry:(Entry *)entry withObjectContext:(NSManagedObjectContext *)managedObjectContext{
    // We need to pull the images ordered by the time they were inserted
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Image" inManagedObjectContext:managedObjectContext];
	NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"insertDate" ascending:YES];
	NSArray *sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
	[fetchRequest setSortDescriptors:sortDescriptors];
	[sortDescriptor release];
	
	[fetchRequest setPredicate:[NSPredicate predicateWithFormat:@"entry == %@", entry]];
    
	[fetchRequest setEntity:entity];
	
	NSError *error;
	
	NSArray *results = [managedObjectContext executeFetchRequest:fetchRequest error:&error];
    [fetchRequest release];
    
    NSLog(@"Looking for image from entry on: %@", entry.enteredDate);
    
    if ([results count] > 0) {
        return [ImageHelper helpersFromArray:results];
    } else  {
        return [NSArray array];
    }
}

- (void)dealloc{
    [image release];
    [super dealloc];
}

@end