//
//  AppPlatform_iOS.m
//  Minecraft
//
//  Created by Brent on 10/30/23.
//  Copyright (c) 2023 __MyCompanyName__. All rights reserved.
//

#include "AppPlatform_iOS.h"

#include <fstream>

#include "common/Utils.hpp"

#include "platforms/openal/SoundSystemAL.hpp"

AppPlatform_iOS::AppPlatform_iOS(minecraftpeViewController *viewController)
{
	m_bShiftPressed[0] = false;
	m_bShiftPressed[1] = false;
	
	m_bIsKeyboardShown = false;
	
	m_pLogger = new Logger;
	m_pSoundSystem = nullptr;
	
	m_pViewController = viewController;
}

void AppPlatform_iOS::initSoundSystem()
{
	if (!m_pSoundSystem)
	{
		LOG_I("Initializing OpenAL SoundSystem...");
		m_pSoundSystem = new SoundSystemAL();
	}
	else
	{
		LOG_E("Trying to initialize SoundSystem more than once!");
	}
}

AppPlatform_iOS::~AppPlatform_iOS()
{
	SAFE_DELETE(m_pSoundSystem);
	
	// DELETE THIS LAST
	SAFE_DELETE(m_pLogger);
}

int AppPlatform_iOS::checkLicense()
{
	// we own the game!!
	return 1;
}

int AppPlatform_iOS::getScreenWidth() const
{
	return m_pViewController.width;
}

int AppPlatform_iOS::getScreenHeight() const
{
	return m_pViewController.height;
}

Texture AppPlatform_iOS::loadTexture(const std::string& path, bool b)
{
	Texture out;
	out.field_C = 1;
	out.field_D = 0;
	
	std::string realPath = getAssetPath(path);
	
	UIImage * image = [UIImage imageWithContentsOfFile:
						[NSString stringWithUTF8String: realPath.c_str()]];
	
	if (!image || !image.CGImage)
	{
		LOG_E("Couldn't find file: %s", path.c_str());
		return out;
	}
	
	out.m_width = CGImageGetWidth(image.CGImage);
	out.m_height = CGImageGetHeight(image.CGImage);
	out.m_pixels = new uint32_t[out.m_width * out.m_height];
	
	CGColorSpace *colorSpace = CGColorSpaceCreateDeviceRGB();
	CGContextRef context = CGBitmapContextCreate(out.m_pixels, out.m_width, out.m_height, 8u, sizeof(uint32_t) * out.m_width, colorSpace, 0x4001u);
	CGColorSpaceRelease(colorSpace);
	
	CGRect rect;
	rect.origin.x = 0.0;
	rect.origin.y = 0.0;
	rect.size.width = static_cast<float>(out.m_width);
	rect.size.height = static_cast<float>(out.m_height);
	CGContextClearRect(context, rect);
	CGContextTranslateCTM(context, 0.0, 0.0);
	CGContextDrawImage(context, rect, image.CGImage);
	CGContextRelease(context);
	
	return out;
}

bool AppPlatform_iOS::shiftPressed()
{
	return m_bShiftPressed[0] || m_bShiftPressed[1];
}

void AppPlatform_iOS::setShiftPressed(bool b, bool isLeft)
{
	m_bShiftPressed[isLeft ? 0 : 1] = b;
}

void AppPlatform_iOS::showKeyboard()
{
	[m_pViewController showKeyboard];
	m_bIsKeyboardShown = true;
}

void AppPlatform_iOS::hideKeyboard()
{
	[m_pViewController hideKeyboard];
	m_bIsKeyboardShown = false;
}

int AppPlatform_iOS::getKeyboardUpOffset()
{
	// @TODO
	// For now we'll just return 1/2 of the screen height. That ought to cover most cases.
	return m_pViewController.height / 2;
}

int AppPlatform_iOS::getUserInputStatus()
{
	return -1;
}

bool AppPlatform_iOS::isTouchscreen()
{
	return true;
}

bool AppPlatform_iOS::hasFileSystemAccess()
{
	return true;
}

std::string AppPlatform_iOS::getAssetPath(const std::string &path) const
{
	size_t dotPos = path.rfind(".", -1, 1);
	size_t slashPos = path.rfind("/", -1, 1);
	size_t dotPos2 = path.rfind('.', -1);
	std::string fileName;
	std::string fileExtension = dotPos2 != std::string::npos ? path.substr(dotPos2+1, path.length()-dotPos2) : "";
	if ((slashPos & dotPos) != std::string::npos)
	{
		// "." & "/" exist in path
		fileName = path.substr(slashPos+1, dotPos - (slashPos+1));
	}
	else
	{
		fileName = path;
	}

	return [[[NSBundle mainBundle] pathForResource:[NSString stringWithUTF8String:fileName.c_str()] ofType:[NSString stringWithUTF8String:fileExtension.c_str()]] UTF8String];
}

std::string AppPlatform_iOS::getPatchData()
{
	std::ifstream ifs(getAssetPath("patches/patch_data.txt").c_str());
	if (!ifs.is_open())
		return "";
	
	std::stringstream ss;
	ss << ifs.rdbuf();
	ifs.close();
	
	return ss.str();
}