//
//  EAGLView.m
//  wolf3d
//
//  Created by Cass Everitt on 2/20/09.
//  Copyright Id Software 2009. All rights reserved.
//



#import <QuartzCore/QuartzCore.h>
#import <OpenGLES/EAGLDrawable.h>

#import "EAGLView.h"
#import "wolf3dAppDelegate.h"

#include "wolfiphone.h"



//gsh
//#define NOTIFYLISTEN  //uncomment to receive notifications

struct AVSystemControllerPrivate;

@interface AVSystemController : NSObject
{
    struct AVSystemControllerPrivate *_priv;
}

+ (void)initialize;
+ (id)sharedAVSystemController;
- (id)init;
- (void)dealloc;
- (BOOL)changeActiveCategoryVolumeBy:(float)fp8 fallbackCategory:(id)fp12 resultVolume:(float *)fp16 affectedCategory:(id *)fp20;
- (BOOL)changeActiveCategoryVolumeBy:(float)fp8;
- (BOOL)setActiveCategoryVolumeTo:(float)fp8 fallbackCategory:(id)fp12 resultVolume:(float *)fp16 affectedCategory:(id *)fp20;
- (BOOL)setActiveCategoryVolumeTo:(float)fp8;
- (BOOL)getActiveCategoryVolume:(float *)fp8 andName:(id *)fp12 fallbackCategory:(id)fp16;
- (BOOL)getActiveCategoryVolume:(float *)fp8 andName:(id *)fp12;
- (BOOL)changeActiveCategoryVolumeBy:(float)fp8 forRoute:(id)fp12 andDeviceIdentifier:(id)fp16;
- (BOOL)setActiveCategoryVolumeTo:(float)fp8 forRoute:(id)fp12 andDeviceIdentifier:(id)fp16;
- (BOOL)activeCategoryVolumeDidChangeTo:(float)fp8 forRoute:(id)fp12 andDeviceIdentifier:(id)fp16;
- (BOOL)getActiveCategoryVolume:(float *)fp8 andName:(id *)fp12 forRoute:(id)fp16 andDeviceIdentifier:(id)fp20;
- (BOOL)toggleActiveCategoryMuted;
- (BOOL)toggleActiveCategoryMutedForRoute:(id)fp8 andDeviceIdentifier:(id)fp12;
- (BOOL)getActiveCategoryMuted:(char *)fp8;
- (BOOL)getActiveCategoryMuted:(char *)fp8 forRoute:(id)fp12 andDeviceIdentifier:(id)fp16;
- (BOOL)changeVolumeBy:(float)fp8 forCategory:(id)fp12;
- (BOOL)setVolumeTo:(float)fp8 forCategory:(id)fp12;
- (BOOL)getVolume:(float *)fp8 forCategory:(id)fp12;
- (id)routeForCategory:(id)fp8;
- (id)volumeCategoryForAudioCategory:(id)fp8;
- (id)attributeForKey:(id)fp8;
- (BOOL)setAttribute:(id)fp8 forKey:(id)fp12 error:(id *)fp16;
- (void)makeError:(id *)fp8 withDescription:(id)fp12 code:(long)fp16;
- (BOOL)okToNotifyFromThisThread;
- (void)handleServerDied;

@end

AVSystemController *SharedAVSystemController;
EAGLView *eaglview;

// A class extension to declare private methods
@interface EAGLView ()

@property (nonatomic, retain) EAGLContext *context;
@property (nonatomic, assign) NSTimer *animationTimer;

- (void) destroyFramebuffer;
- (void) swapBuffers;

@end


@implementation EAGLView

@synthesize context;
@synthesize animationTimer;
@synthesize animationInterval;


// You must implement this method
+ (Class)layerClass {
    return [CAEAGLLayer class];
}


//The GL view is stored in the nib file. When it's unarchived it's sent -initWithCoder:
- (id)initWithCoder:(NSCoder*)coder {
    self = [super initWithCoder:coder];
	
	eaglview = self;
		
	// Get the layer
	CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;
	
	eaglLayer.opaque = YES;
	eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
									
									[NSNumber numberWithBool:NO], 
									kEAGLDrawablePropertyRetainedBacking, 
									
									kEAGLColorFormatRGB565,
									/* kEAGLColorFormatRGBA8, */
									kEAGLDrawablePropertyColorFormat, 
									
									nil];
	
	context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1];
	assert( context );
	
	if ( ![EAGLContext setCurrentContext:context]) {
		[self release];
		return nil;
	}        
	self.multipleTouchEnabled = true;
	
    [EAGLContext setCurrentContext:context];
	
    glGenFramebuffersOES(1, &viewFramebuffer);
    glGenRenderbuffersOES(1, &viewRenderbuffer);
    
    glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer);
    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
    [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(CAEAGLLayer*)self.layer];
    glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, viewRenderbuffer);
    
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);
    
	glGenRenderbuffersOES(1, &depthRenderbuffer);
	glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
	glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight);
	glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_DEPTH_ATTACHMENT_OES, GL_RENDERBUFFER_OES, depthRenderbuffer);
    
    if(glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) {
        NSLog(@"failed to make complete framebuffer object %x", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES));
    }
	
    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
	
#if 0	
	// set swapinterval if possible
	void *eglSwapInterval;	
	eglSwapInterval = dlsym( RTLD_DEFAULT, "eglSwapInterval" );
	if ( eglSwapInterval ) {
		((void(*)(int))eglSwapInterval)( 2 );
	}
#endif

#ifdef VOLUMEHACK
	//-------------------
	// Volume Button Hack
	//gsh
	// Note: MediaPlayer framework required for this trick
	//create a MPVolumeView to hack the volume button
	CGRect frame = CGRectMake(0, -30, 180, 10);  //put this thing offscreen
	volumeView = [[[MPVolumeView alloc] initWithFrame:frame] autorelease];
	[volumeView sizeToFit];
	[self addSubview:volumeView];
	
	// Find the volume view slider 
	for (UIView *view in [volumeView subviews]){
		if ([[[view class] description] isEqualToString:@"MPVolumeSlider"]) {
			volumeViewSlider = (UISlider *)view;
		}
	}
	
	//listen for volume changes
	[[NSNotificationCenter defaultCenter] addObserver:self 
											 selector:@selector(volumeListener:) 
												 name:@"AVSystemController_SystemVolumeDidChangeNotification" 
											   object:nil];
	
	//---------------------
#endif
	
#ifdef NOTIFYLISTEN	//gsh
	//this is a general purpose listener
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(notificationListener:)
												 name:nil
											   object:nil];
#endif
	
	// with swapinterval, we want to update as fast as possible
	float	interval = 1.0 / 30.0f;
    self.animationTimer = [NSTimer scheduledTimerWithTimeInterval:interval 
														   target:self 
														 selector:@selector(drawView) 
														 userInfo:nil repeats:YES];
	
    return self;
}

//gsh
- (void)viewDidLoad {

	Com_Printf("\n---------------\nviewDidLoad() called\n---------------\n\n");
}

- (void)drawView {
		
	[ (wolf3dAppDelegate *)[UIApplication sharedApplication].delegate restartAccelerometerIfNeeded];
	
#if 0	
	//------------------
	// Volume button hack
	{
		if ( SharedAVSystemController ) {
			float newVolume;
			NSString *categoryName;
			static float activeVolume = 0.9;
			if ([SharedAVSystemController getActiveCategoryVolume:&newVolume andName:&categoryName]) {
				if (activeVolume < newVolume) {
					[SharedAVSystemController setActiveCategoryVolumeTo:activeVolume];
					Com_Printf( "Volume up: %i\n", Sys_Milliseconds() );
				}
			}
		}
	}
#endif	
	
#ifdef VOLUMEHACK
	//------------------
	// volume hack

	
	//check for volume adjustments   gsh
	if ( menuState == IPM_CONTROLS)
	{
		if (lastFramesVolume != s_masterVolume->value)
		{
			lastFramesVolume = s_masterVolume->value;
			[volumeViewSlider setValue:lastFramesVolume animated:NO];
			[volumeViewSlider _commitVolumeChange];
		}
	}
#endif
	
	iphoneFrame();	// swapBuffers() will be called from here
}


- (void)swapBuffers {
//    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
	loggedTimes[iphoneFrameNum&(MAX_LOGGED_TIMES-1)].beforeSwap = Sys_Milliseconds();
    [context presentRenderbuffer:GL_RENDERBUFFER_OES];
	loggedTimes[iphoneFrameNum&(MAX_LOGGED_TIMES-1)].afterSwap = Sys_Milliseconds();
}

- (void)layoutSubviews {
    [self drawView];
}



- (void)destroyFramebuffer {
    glDeleteFramebuffersOES(1, &viewFramebuffer);
    viewFramebuffer = 0;
    glDeleteRenderbuffersOES(1, &viewRenderbuffer);
    viewRenderbuffer = 0;
	glDeleteRenderbuffersOES(1, &depthRenderbuffer);
	depthRenderbuffer = 0;
}


- (void)dealloc {
    if ([EAGLContext currentContext] == context) {
        [EAGLContext setCurrentContext:nil];
    }
    
    [context release];  
    [super dealloc];
}

- (void) handleTouches:(NSSet*)touches withEvent:(UIEvent*)event {
	int touchCount = 0;
	int points[16];
	static int previousTouchCount = 0;
	
	//gsh
	if (previousTouchCount == 0)
		isTouchMoving = 0;
	
	NSSet *t = [event allTouches];
    for (UITouch *myTouch in t)
    {
        CGPoint touchLocation = [myTouch locationInView:nil];

		points[ 2 * touchCount + 0 ] = touchLocation.x;
		points[ 2 * touchCount + 1 ] = touchLocation.y; // ( h - 1 ) - touchLocation.y;
		
		touchCount++;
		
        if (myTouch.phase == UITouchPhaseBegan) {
            // new touch handler
        }
        if (myTouch.phase == UITouchPhaseMoved) {
            // touch moved handler
			//gsh, use this for swipe events in the scrolling menus
			isTouchMoving = 1;
        }
        if (myTouch.phase == UITouchPhaseEnded) {
			touchCount--;
		}
    }
	
	// toggle the console with four touches
	if ( touchCount == 4 && previousTouchCount != 4 ) {			
		if ( textField == nil ) {
			// do this before starting the textField, which
			// takes a long time
			iphoneActivateConsole();
			
			textField = [UITextField alloc];
			[textField initWithFrame:CGRectMake( 0, 0, 20, 20 ) ];
			[self addSubview:textField];
			[textField release];
			textField.hidden = true;
			textField.delegate = self;
			textField.autocapitalizationType = UITextAutocapitalizationTypeNone;
			textField.autocorrectionType = UITextAutocorrectionTypeNo;
			[textField becomeFirstResponder];
		} else {
			void iphoneDeactivateConsole();
			[textField resignFirstResponder];
			[textField removeFromSuperview];
			textField = nil;
			
			iphoneDeactivateConsole();
		}		
	}
	previousTouchCount = touchCount;
	
	iphoneTouchEvent( touchCount, points );
}


- (void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
	[self handleTouches:touches withEvent:event];
}

- (void) touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event {
	[self handleTouches:touches withEvent:event];
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
	[self handleTouches:touches withEvent:event];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
	[self handleTouches:touches withEvent:event];
}

// gsh
#ifdef NOTIFYLISTEN
- (void) notificationListener:(NSNotification *)notify
{
	Com_Printf("notificationListener: %s\n", [notify.name UTF8String]);
//NSString
	
	if ([notify.name isEqualToString:@"CPDistributedMessagingCenterServerDidTerminateNotification"] && menuState == IPM_STOREKIT)
	{
		iphoneMessageBox("Apple Store Failed", "Connection to app store has terminated.  Please try again later.");
		menuState = IPM_MAIN;
	}
	//sometimes after requrestProductData() is called we get these notifications
	//and the storekit no longer responds (making it appear as a crash)
	/*	
notificationListener: CPDistributedMessagingCenterServerDidTerminateNotification
notificationListener: SKNotificationRequestFinished
notificationListener: SKNotificationTransactionsRefreshed
notificationListener: CPDistributedMessagingCenterServerDidTerminateNotification
*/	
}
#endif

#ifdef VOLUMEHACK
//-------------------
// Volume Button Hack
// gsh
// currently this is problematic...
// it's slow if the user holds the volume button
// let's see if inlining this with the normal game loop is faster
// than listening for the event... it's not
// Note:  MediaPlayer framework required for this trick
//-------------------
- (void) volumeListener:(NSNotification *)notify
{
	//TODO: provide left/right click attacks
	if (volumeViewSlider.value < s_masterVolume->value)
	{
	
		[volumeViewSlider setValue:s_masterVolume->value animated:NO];//volumeSetting animated:NO];
		[volumeViewSlider _commitVolumeChange];  //again, ignoring compiler warning complaints
												//this might have a warning because it's currently undocumented?
		Cvar_Set("volumeFireDown", "1");
	}
	else if (volumeViewSlider.value > s_masterVolume->value)//volumeSetting)
	{
		[volumeViewSlider setValue:s_masterVolume->value animated:NO];//volumeSetting animated:NO];
		[volumeViewSlider _commitVolumeChange];  //again, ignoring compiler warning complaints
		Cvar_Set("volumeFireUp", "1");
	}
}
#endif


@end


@implementation EAGLView (UITextFieldDelegate)

- (BOOL)textFieldShouldReturn:(UITextField *)_textField 
{
	iphoneExecuteCommandLine();
	return YES;
}

@end


const char * SysIPhoneGetConsoleTextField() {
	if ( eaglview->textField == nil ) {
		return "";
	}
	return [ eaglview->textField.text UTF8String ];
}

void SysIPhoneSetConsoleTextField( const char * str) {
	assert( eaglview->textField != nil );	
	eaglview->textField.text = [ NSString stringWithUTF8String: str ];
}

void SysIPhoneSwapBuffers() {
	[eaglview swapBuffers];
}

void SysIPhoneOpenURL( const char *url ) {
	Com_Printf( "OpenURL char *: %s\n", url );
	
	NSString *nss = [NSString stringWithCString: url encoding: NSASCIIStringEncoding];
	[[UIApplication sharedApplication] openURL:[NSURL URLWithString: nss]];
}

void SysIPhoneSetUIKitOrientation( int isLandscapeRight ) {
	if ( isLandscapeRight ) {
		[UIApplication sharedApplication].statusBarOrientation = UIInterfaceOrientationLandscapeRight;
	} else {
		[UIApplication sharedApplication].statusBarOrientation = UIInterfaceOrientationLandscapeLeft;
	}
}

void SysIPhoneLoadJPG( W8* jpegData, int jpegBytes, W8 **pic, W16 *width, W16 *height, W16 *bytes ) {
	CFDataRef data;
	int dataBytes = 0;
	UIImage *img = [ UIImage imageWithData: [NSData dataWithBytes: (const char *)jpegData length: (NSUInteger)jpegBytes ] ];
	int imgBytes;
	*width = img.size.width;
	*height = img.size.height;	
	imgBytes = (int)(*width) * (int)(*height) * 4;
	data = CGDataProviderCopyData( CGImageGetDataProvider( img.CGImage ) );
	dataBytes = CFDataGetLength( data );
	*bytes = 4;
	if ( dataBytes > imgBytes ) {
		*pic = NULL;
		return;
	}
	*pic = (W8 *)malloc( imgBytes );
	CFDataGetBytes( data, CFRangeMake(0, dataBytes), *pic );
	// convert BGRA to RGBA
	for ( imgBytes = 0; imgBytes < dataBytes; imgBytes+= 4 ) {
		W8 tmp = pic[0][ imgBytes + 0 ];
		pic[0][ imgBytes + 0 ] = pic[0][ imgBytes + 2 ];
		pic[0][ imgBytes + 2 ] = tmp;
	}
}