//
//  GameViewController.m
//  PanoPainter
//
//  Created by Omar Mohamed Ali Mudhir on 07/05/17.
//  Copyright © 2017 Omar Mohamed Ali Mudhir. All rights reserved.
//

#include "pch.h"
#import "GameViewController.h"
#import <OpenGLES/ES3/glext.h>
#include "app.h"

@interface GameViewController () {
}
@property (strong, nonatomic) EAGLContext *context;

- (void)setupGL;
- (void)tearDownGL;
@end

@implementation GameViewController

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint touchLocation = [touch locationInView:self.view];
    float scale = self.view.contentScaleFactor;
    App::I.mouse_down(0, touchLocation.x * scale, touchLocation.y * scale);
}
- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint touchLocation = [touch locationInView:self.view];
    float scale = self.view.contentScaleFactor;
    App::I.mouse_move(touchLocation.x * scale, touchLocation.y * scale);
}
-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint touchLocation = [touch locationInView:self.view];
    float scale = self.view.contentScaleFactor;
    App::I.mouse_up(0, touchLocation.x * scale, touchLocation.y * scale);
}

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
{
    App::I.resize(size.width * self.view.contentScaleFactor,
                  size.height * self.view.contentScaleFactor);
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    App::I.initLog();

    
    self.context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES3];

    if (!self.context) {
        NSLog(@"Failed to create ES context");
    }
    
    GLKView *view = (GLKView *)self.view;
    view.context = self.context;
    view.drawableDepthFormat = GLKViewDrawableDepthFormat24;

    App::I.width = view.frame.size.width * view.contentScaleFactor;
    App::I.height = view.frame.size.height * view.contentScaleFactor;
    
    [self setupGL];
}

- (void)dealloc
{    
    [self tearDownGL];
    
    if ([EAGLContext currentContext] == self.context) {
        [EAGLContext setCurrentContext:nil];
    }
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];

    if ([self isViewLoaded] && ([[self view] window] == nil)) {
        self.view = nil;
        
        [self tearDownGL];
        
        if ([EAGLContext currentContext] == self.context) {
            [EAGLContext setCurrentContext:nil];
        }
        self.context = nil;
    }

    // Dispose of any resources that can be recreated.
}

- (BOOL)prefersStatusBarHidden {
    return YES;
}

- (void)setupGL
{
    [EAGLContext setCurrentContext:self.context];
    App::I.init();
}

- (void)tearDownGL
{
    [EAGLContext setCurrentContext:self.context];
    
}

#pragma mark - GLKView and GLKViewController delegate methods

- (void)update
{
    
}

- (void)glkView:(GLKView *)view drawInRect:(CGRect)rect
{
    App::I.clear();
    App::I.update(0);
}

@end