root/branches/CoreData/SapphireFrappliance/MetaData/SapphireMObjects/SapphireGenre.m @ 840

#import "SapphireGenre.h"
#import "CoreDataSupportFunctions.h"
#import "SapphireFileSorter.h"
#import "SapphireMovie.h"
#import "SapphireMetaDataSupport.h"

@implementation SapphireGenre

static NSArray *allowedSorts = nil;

+ (void)load
{
        allowedSorts = [[NSArray alloc] initWithObjects:[SapphireMovieTitleSorter sharedInstance], [SapphireDateSorter sharedInstance], [SapphireMovieIMDBRatingSorter sharedInstance], nil];
}

+ (SapphireGenre *)genre:(NSString *)genre inContext:(NSManagedObjectContext *)moc
{
        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name == %@", genre];
        return (SapphireGenre *)doSingleFetchRequest(SapphireGenreName, moc, predicate);
}
        
+ (SapphireGenre *)createGenre:(NSString *)genre inContext:(NSManagedObjectContext *)moc
{
        SapphireGenre *ret = [SapphireGenre genre:genre inContext:moc];
        if(ret != nil)
                return ret;
        
        ret = [NSEntityDescription insertNewObjectForEntityForName:SapphireGenreName inManagedObjectContext:moc];
        ret.name = genre;
        return ret;
}

+ (NSDictionary *)upgradeV1GenresFromContext:(NSManagedObjectContext *)oldMoc toContext:(NSManagedObjectContext *)newMoc
{
        NSMutableDictionary *lookup = [NSMutableDictionary dictionary];
        NSArray *oldGenres = doFetchRequest(SapphireGenreName, oldMoc, nil);
        NSEnumerator *genreEnum = [oldGenres objectEnumerator];
        NSManagedObject *oldGenre;
        while((oldGenre = [genreEnum nextObject]) != nil)
        {
                SapphireGenre *newGenre = [NSEntityDescription insertNewObjectForEntityForName:SapphireGenreName inManagedObjectContext:newMoc];
                NSString *name = [oldGenre valueForKey:@"name"];
                newGenre.name = name;
                newGenre.sortMethod = [oldGenre valueForKey:@"sortMethod"];
                [lookup setObject:newGenre forKey:name];
        }
        return lookup;
}

- (NSPredicate *)metaFileFetchPredicate
{
        NSArray *movieIds = [self.moviesSet valueForKey:@"objectID"];
        return [NSPredicate predicateWithFormat:@"movie IN %@", movieIds];
}

- (NSArray *)fileSorters
{
        return allowedSorts;
}

- (NSString *)path
{
        return [[super path] stringByAppendingPathComponent:self.name];
}

- (BOOL)shouldDelete
{
        return [self.moviesSet count] == 0;
}

-(void)removeMovies:(NSSet*)removedMovies
{
        [super removeMovies:removedMovies];
        if([self.moviesSet count] == 0)
                [SapphireMetaDataSupport setObjectForPendingDelete:self];
}

- (void)removeMoviesObject:(SapphireMovie *)removedMovie
{
        [super removeMoviesObject:removedMovie];
        if([self.moviesSet count] == 0)
                [SapphireMetaDataSupport setObjectForPendingDelete:self];
}

@end