/**
 *  Save username and password to keychain
 *
 *  @param NSString username - represents username as string
 *  @param NSString password - represents password as string
 */
-(void) saveLoginDataWithUsername:(NSString *) username andPassword:(NSString *) password
{
    KeychainItemWrapper* keychain = [[KeychainItemWrapper alloc] initWithIdentifier:@"sheeelios" accessGroup:nil];
    [keychain setObject:(__bridge id)(kSecAttrAccessibleWhenUnlocked) forKey:(__bridge id)(kSecAttrAccessible)];


    [keychain setObject:username forKey:(__bridge id)(kSecAttrAccount)];
    [keychain setObject:password forKey:(__bridge id)(kSecValueData)];

    keychain = nil;
}

/**
 *  Get user login data from keychain
 *
 *  @return NSMutableDictionary data|nil - represents username and password stored in dictionary
 */
-(NSMutableDictionary *) getSavedLoginData
{
    KeychainItemWrapper* keychain = [[KeychainItemWrapper alloc] initWithIdentifier:@"sheeelios" accessGroup:nil];
    [keychain setObject:(__bridge id)(kSecAttrAccessibleWhenUnlocked) forKey:(__bridge id)(kSecAttrAccessible)];

    NSMutableDictionary *data = [[NSMutableDictionary alloc] init];


    NSString *username = [keychain objectForKey:(__bridge id)(kSecAttrAccount)];
    NSString *password = [keychain objectForKey:(__bridge id)(kSecValueData)];

    if(username == nil)
        return nil;

    if(password == nil)
        return nil;


    [data setObject:username forKey:@"username"];
    [data setObject:password forKey:@"password"];

    return data;
}