#import "AppConfig.h"
#import "PreferenceDefs.h"
#import "VirtualPadView.h"
#import "VirtualPadButton.h"
#import "VirtualPadStick.h"
#include "../VirtualPad.h"

@interface VirtualPadView ()
@property(strong, nonatomic) UISelectionFeedbackGenerator* selectionFeedback;
@end

@implementation VirtualPadView

- (id)initWithFrame:(CGRect)frame padHandler:(CPH_Generic*)padHandler
{
	self = [super initWithFrame:frame];
	if(self)
	{
		NSMutableDictionary<NSString*, UIImage*>* itemImages = [[NSMutableDictionary alloc] init];
		[itemImages setObject:[UIImage imageNamed:@"select.png"] forKey:@"select"];
		[itemImages setObject:[UIImage imageNamed:@"start.png"] forKey:@"start"];
		[itemImages setObject:[UIImage imageNamed:@"up.png"] forKey:@"up"];
		[itemImages setObject:[UIImage imageNamed:@"down.png"] forKey:@"down"];
		[itemImages setObject:[UIImage imageNamed:@"left.png"] forKey:@"left"];
		[itemImages setObject:[UIImage imageNamed:@"right.png"] forKey:@"right"];
		[itemImages setObject:[UIImage imageNamed:@"triangle.png"] forKey:@"triangle"];
		[itemImages setObject:[UIImage imageNamed:@"cross.png"] forKey:@"cross"];
		[itemImages setObject:[UIImage imageNamed:@"circle.png"] forKey:@"circle"];
		[itemImages setObject:[UIImage imageNamed:@"square.png"] forKey:@"square"];
		[itemImages setObject:[UIImage imageNamed:@"lr.png"] forKey:@"lr"];
		[itemImages setObject:[UIImage imageNamed:@"analogstick.png"] forKey:@"analogStick"];
		self.itemImages = itemImages;
		_selectionFeedback = [[UISelectionFeedbackGenerator alloc] init];
		self.opaque = NO;
		self.multipleTouchEnabled = YES;
		_padHandler = padHandler;
		[self rebuildPadItems];
	}
	return self;
}

- (void)rebuildPadItems
{
	auto frame = self.frame;
	auto padItems = CVirtualPad::GetItems(frame.size.width, frame.size.height);
	NSMutableArray<VirtualPadItem*>* items = [[NSMutableArray alloc] init];
	for(const auto& padItem : padItems)
	{
		auto itemWidth = padItem.x2 - padItem.x1;
		auto itemHeight = padItem.y2 - padItem.y1;
		VirtualPadItem* item = nil;
		if(padItem.isAnalog)
		{
			auto stick = [[VirtualPadStick alloc] init];
			stick.codeX = padItem.code0;
			stick.codeY = padItem.code1;
			item = stick;
		}
		else
		{
			auto button = [[VirtualPadButton alloc] init];
			button.code = padItem.code0;
			button.caption = [NSString stringWithUTF8String:padItem.caption.c_str()];
			item = button;
		}
		item.image = [self.itemImages objectForKey:[NSString stringWithUTF8String:padItem.imageName.c_str()]];
		item.padHandler = _padHandler;
		item.bounds = CGRectMake(padItem.x1, padItem.y1, itemWidth, itemHeight);
		[items addObject:item];
	}
	self.items = items;
}

- (void)drawRect:(CGRect)rect
{
	[super drawRect:rect];

	auto context = UIGraphicsGetCurrentContext();

	for(VirtualPadItem* item in self.items)
	{
		[item draw:context];
	}
}

- (void)touchesBegan:(NSSet<UITouch*>*)touches withEvent:(UIEvent*)event
{
	for(UITouch* touch in touches)
	{
		auto touchPos = [touch locationInView:self];
		for(VirtualPadItem* item in self.items)
		{
			if(CGRectContainsPoint(item.bounds, touchPos))
			{
				item.touch = touch;
				[item onPointerDown:touchPos];
				if(CAppConfig::GetInstance().GetPreferenceBoolean(PREFERENCE_UI_VIRTUALPAD_HAPTICFEEDBACK))
					[self.selectionFeedback selectionChanged];
				[self setNeedsDisplay];
				break;
			}
		}
	}
}

- (void)touchesMoved:(NSSet<UITouch*>*)touches withEvent:(UIEvent*)event
{
	for(UITouch* touch in touches)
	{
		auto touchPos = [touch locationInView:self];
		for(VirtualPadItem* item in self.items)
		{
			if(item.touch == touch)
			{
				[item onPointerMove:touchPos];
				[self setNeedsDisplay];
				break;
			}
		}
	}
}

- (void)endOrCancelTouches:(NSSet<UITouch*>*)touches
{
	for(UITouch* touch in touches)
	{
		for(VirtualPadItem* item in self.items)
		{
			if(item.touch == touch)
			{
				item.touch = nil;
				[item onPointerUp];
				[self setNeedsDisplay];
				break;
			}
		}
	}
}

- (void)touchesEnded:(NSSet<UITouch*>*)touches withEvent:(UIEvent*)event
{
	[self endOrCancelTouches:touches];
}

- (void)touchesCancelled:(NSSet<UITouch*>*)touches withEvent:(UIEvent*)event
{
	[self endOrCancelTouches:touches];
}

@end