nspredicate.m

- (NSPredicate *)predicateFromSearchOptions:(SearchOptions *)searchOptions {
    NSMutableArray *formatParts = [NSMutableArray array];
    NSMutableArray *args = [NSMutableArray array];
    
    // viewport
    [formatParts addObjectsFromArray:@[
        @"latitude >= %@",
        @"latitude <= %@",
        @"longitude >= %@",
        @"longitude <= %@"
    ]];

    [args addObjectsFromArray:@[
        searchOptions.minLat,
        searchOptions.maxLat,
        searchOptions.minLong,
        searchOptions.maxLong
    ]];
    
    // tagets
    NSMutableArray *targets = [NSMutableArray array];
    if (searchOptions.foreclosures.boolValue == YES) {
        [targets addObject:@"foreclosure"];
    }
    if (searchOptions.homesForSale.boolValue == YES) {
        [targets addObject:@"sale"];
    }

    
    if (targets.count > 0) {
        [formatParts addObject:@"status IN %@"];
        [args addObject:targets];
    } else {
        [formatParts addObject:@"propertyType == %@"];
        [args addObject:targets[0]];
    }
    
    // open house ?
    if (searchOptions.onlyOpenHouse != nil &&
        [searchOptions.onlyOpenHouse isEqualToString:@"no"] == NO) {
        NSDictionary *timeInterval = [NSDate timeIntervalNamed:searchOptions.onlyOpenHouse];

        if (timeInterval[@"begin_date"] != nil) {
            [formatParts addObject:@"openHouseDate >= %@"];
            [args addObject:timeInterval[@"begin_date"]];
        }
        
        if (timeInterval[@"end_date"] != nil) {
            [formatParts addObject:@"openHouseDate >= %@"];
            [args addObject:timeInterval[@"end_date"]];
        }
    }
    
    // beds
    if (searchOptions.bedroomsMin.intValue > 1) {
        [formatParts addObject:@"bedrooms >= %@"];
        [args addObject:searchOptions.bedroomsMin];
    }
    
    // baths
    if (searchOptions.bathroomsMin.intValue > 1) {
        [formatParts addObject:@"bathrooms >= %@"];
        [args addObject:searchOptions.bathroomsMin];
    }

    // price
    if (searchOptions.priceMin.intValue > 0) {
        [formatParts addObject:@"price >= %@"];
        [args addObject:searchOptions.priceMin];
    }
    
    if (searchOptions.priceMax.intValue < 1111111111) {
        [formatParts addObject:@"price <= %@"];
        [args addObject:searchOptions.priceMax];
    }
    
    // sqft
    if (searchOptions.sqftMin.intValue > 0) {
        [formatParts addObject:@"sqft >= %@"];
        [args addObject:searchOptions.sqftMin];
    }
    
    if (searchOptions.sqftMax.intValue < 1111111111) {
        [formatParts addObject:@"sqft <= %@"];
        [args addObject:searchOptions.sqftMax];
    }
    
    // year built
    if (searchOptions.yearBuiltMin.intValue > 0) {
        [formatParts addObject:@"yearBuilt >= %@"];
        [args addObject:searchOptions.yearBuiltMin];
    }
    
    if (searchOptions.yearBuiltMax.intValue < 1111111111) {
        [formatParts addObject:@"yearBuilt <= %@"];
        [args addObject:searchOptions.yearBuiltMax];
    }
    
    
    NSString *format = [formatParts mapWithBlock:^id(NSString *condition) {
        return [NSString stringWithFormat:@"(%@)", condition];
    }].join(@" AND ");
    
    NSPredicate *predicate =
        [NSPredicate predicateWithFormat:format argumentArray:args];

    return predicate;
}