DCSettings.m

#import "DCSettings.h"
#import "DCTypes.h"

static NSString * const kSettingsPlistPath = @"/User/Library/Preferences/com.protosphere.displaycandy.plist";

@interface DCSettings ()
- (DCTransition)_transitionForMode:(DCTransitionMode)mode processRandom:(BOOL)processRandom;
@end

@implementation DCSettings

+ (DCSettings *)sharedSettings
{
	@synchronized([DCSettings class]) {
		static DCSettings *sharedSettings = nil;

		if (!sharedSettings) {
			sharedSettings = [[self alloc] init];
		}

		return sharedSettings;
	}

	return nil;
}

- (id)init
{
	self = [super init];

	if (self) {
		[self reload];
	}

	return self;
}

- (BOOL)isEnabled
{
	return ([_settings objectForKey:@"enabled"] ? [[_settings objectForKey:@"enabled"] boolValue] : YES);
}

- (DCTransition)transitionForMode:(DCTransitionMode)mode
{
	DCTransition transition = [self _transitionForMode:mode processRandom:YES];

	return transition;
}

- (DCTransition)_transitionForMode:(DCTransitionMode)mode processRandom:(BOOL)processRandom
{
	static DCTransition validSwitchModes[11] = {DCTransitionDefault,
												DCTransitionCube,
												DCTransitionFlip,
												DCTransitionPageCurl,
												DCTransitionPageUncurl,
												DCTransitionRipple,
												DCTransitionFade,
												DCTransitionCover,
												DCTransitionReveal,
												DCTransitionPush,
												DCTransitionCameraIris};

	DCTransition transition;

	switch (mode) {
		case DCTransitionModeLaunch:
			transition = ([_settings objectForKey:@"launchAnimation"] ? [[_settings objectForKey:@"launchAnimation"] intValue] : DCTransitionSwing);
			break;
		case DCTransitionModeSuspend:
			transition = ([_settings objectForKey:@"suspendAnimation"] ? [[_settings objectForKey:@"suspendAnimation"] intValue] : DCTransitionSwing);
			break;
		case DCTransitionModeSwitch:
			transition = ([_settings objectForKey:@"switchAnimation"] ? [[_settings objectForKey:@"switchAnimation"] intValue] : DCTransitionRipple);
			break;
		default:
			transition = DCTransitionDefault;
	}

	if ((transition == DCTransitionRandom) && processRandom) {
		unsigned i;
		unsigned i_max = (DCTransitionModeSwitch ? 10 : 13);

		i = arc4random_uniform(i_max);

		if (mode == DCTransitionModeSwitch)
			transition = validSwitchModes[i];
		else
			transition = i;
	}

	return transition;
}

- (DCTransitionDirection)directionForMode:(DCTransitionMode)mode
{
	DCTransition transition = [self _transitionForMode:mode processRandom:NO];	  
	DCTransitionDirection direction;

	switch (mode) {
		case DCTransitionModeLaunch:
			direction = ([_settings objectForKey:@"launchAnimationDirection"] ? [[_settings objectForKey:@"launchAnimationDirection"] intValue] : DCTransitionDirectionRight);
			break;
		case DCTransitionModeSuspend:
			direction = [[_settings objectForKey:@"suspendAnimationDirection"] intValue];
			break;
		case DCTransitionModeSwitch:
			direction = ([_settings objectForKey:@"switchAnimationDirection"] ? [[_settings objectForKey:@"switchAnimationDirection"] intValue] : DCTransitionDirectionRight);
			break;
		default:
			direction = DCTransitionDirectionRight;
	}

	if (transition == DCTransitionRandom) {
		unsigned i = arc4random_uniform(3);
		direction = i;
	}

	return direction;
}

- (NSInteger)suckPointForMode:(DCTransitionMode)mode
{
	switch (mode) {
		case DCTransitionModeLaunch:
			return [[_settings objectForKey:@"launchAnimationSuckPoint"] intValue];
		case DCTransitionModeSuspend:
			return [[_settings objectForKey:@"suspendAnimationSuckPoint"] intValue];
		default:
			return 0;
	}
}

- (CGFloat)durationForMode:(DCTransitionMode)mode
{
	switch (mode) {
		case DCTransitionModeLaunch:
			return ([_settings objectForKey:@"launchAnimationDuration"] ? [[_settings objectForKey:@"launchAnimationDuration"] floatValue] : 0.5f);
		case DCTransitionModeSuspend:
			return ([_settings objectForKey:@"suspendAnimationDuration"] ? [[_settings objectForKey:@"suspendAnimationDuration"] floatValue] : 0.5f);
		case DCTransitionModeSwitch:
			return ([_settings objectForKey:@"switchAnimationDuration"] ? [[_settings objectForKey:@"switchAnimationDuration"] floatValue] : 0.5f);
		default:
			return 0;
	}
}

- (void)reload
{
	[_settings release];
	_settings = [[NSDictionary alloc] initWithContentsOfFile:kSettingsPlistPath];
}

@end