UIApplication+DisplayedLanguage.m

//
//  UIApplication+DisplayedLanguage.m
//  Crossfader
//
//  Created by Devin Chalmers on 4/14/14.
//
//

#import "UIApplication+DisplayedLanguage.m.h"

#import "NSArray_Functional.h"

@implementation UIApplication (DJZ)

- (NSString *)displayedLanguage;
{
    static NSString *displayedLanguage = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        NSArray *supportedLanguages = [[NSBundle mainBundle] pathsForResourcesOfType:@"lproj" inDirectory:nil];
        supportedLanguages = [supportedLanguages mapNoNils:^id(NSString *path) {
            return path.lastPathComponent.stringByDeletingPathExtension;
        }];
        
        displayedLanguage = [[NSLocale preferredLanguages] firstObjectCommonWithArray:supportedLanguages];
        
        if (!displayedLanguage) displayedLanguage = @"en";
    });
    return displayedLanguage;
}

@end