/*

File: ManualGroup.m

Abstract: The ManualGrou entity (NSManagedObject subclass)

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*/

#import "ManualGroup.h"

#import "Recipe.h"

@implementation ManualGroup 

/**

    Returns the image name for the ManualGroup class.  This method is defined

    on the Group class but each subclass must return their own image name 

    (which must also be a TIFF file in the bundle resources.)

*/

- (NSString *)groupImageName {

    return @"image_group_library";

}

- (BOOL)isLeaf {

    return NO;

}

- (NSSet *)items {

    return nil;

}

- (void)setItems:(NSSet *)items {

    // noop

}

- (BOOL)allowsSubRecipes {

    return YES;

}

- (BOOL)isSmartGroup {

    return NO;

}

/**

    The summary string for the group.  This implementation returns a string with

    the count of the recipes in the group, as well as a count of how many days

    the recipes would last for (assuming three meals a day...)

*/

- (NSString *)summaryString {

    int recipeCount = [(NSSet*)[self valueForKey: @"recipes"] count];

    return [NSString stringWithFormat: @"%i recipes, %.2f day%@", 

        recipeCount, (float)recipeCount/3, ( recipeCount/3 == 1 ? @"" : @"s" )];

}

#pragma mark

#pragma mark Core Data accessors/mutators/validation methods

#pragma mark

- (void)addRecipesObject:(Recipe *)value  {    

    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];

    [self willChangeValueForKey:@"recipes" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];

    [[self primitiveValueForKey: @"recipes"] addObject: value];

    [self didChangeValueForKey:@"recipes" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];

    [changedObjects release];

}

- (void)removeRecipesObject:(Recipe *)value  {

    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];

    [self willChangeValueForKey:@"recipes" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];

    [[self primitiveValueForKey: @"recipes"] removeObject: value];

    [self didChangeValueForKey:@"recipes" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];

    [changedObjects release];

}

@end