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//
// Preferences.m
// SmartDeviceLink-iOS
#import "Preferences.h"
NSString *const IPAddressPreferencesKey = @"SDLExampleAppIPAddress";
NSString *const PortPreferencesKey = @"SDLExampleAppPort";
NSString *const DefaultIPAddressValue = @"192.168.1.1";
NSString *const DefaultPortValue = @"12345";
@interface Preferences ()
@end
@implementation Preferences
#pragma mark - Singleton / Initializers
+ (instancetype)sharedPreferences {
static Preferences *sharedPreferences = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedPreferences = [[Preferences alloc] init];
});
return sharedPreferences;
}
- (instancetype)init {
self = [super init];
if (!self) {
return nil;
}
if (self.ipAddress == nil || self.port == nil) {
[self resetPreferences];
}
return self;
}
#pragma mark - Public API
- (void)resetPreferences {
self.ipAddress = DefaultIPAddressValue;
self.port = DefaultPortValue;
}
#pragma mark - Setters / Getters
- (NSString *)ipAddress {
return [self stringForKey:IPAddressPreferencesKey];
}
- (void)setIpAddress:(NSString *)ipAddress {
[self setString:ipAddress forKey:IPAddressPreferencesKey];
}
- (NSString *)port {
return [self stringForKey:PortPreferencesKey];
}
- (void)setPort:(NSString *)port {
[self setString:port forKey:PortPreferencesKey];
}
#pragma mark - Private User Defaults Helpers
- (void)setString:(NSString *)aString forKey:(NSString *)aKey {
NSParameterAssert(aKey != nil);
dispatch_async(self.class.preferencesQueue, ^{
[[NSUserDefaults standardUserDefaults] setObject:aString forKey:aKey];
});
}
- (NSString *)stringForKey:(NSString *)aKey {
NSParameterAssert(aKey != nil);
__block NSString *retVal = nil;
dispatch_sync(self.class.preferencesQueue, ^{
retVal = [[NSUserDefaults standardUserDefaults] stringForKey:aKey];
});
return retVal;
}
#pragma mark - Class Queue
+ (dispatch_queue_t)preferencesQueue {
static dispatch_queue_t preferencesQueue;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
preferencesQueue = dispatch_queue_create("com.sdl-example.preferences", DISPATCH_QUEUE_SERIAL);
});
return preferencesQueue;
}
@end
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