/*
 * SdlRenderer.cpp
 *
 *  Created on: Nov 13, 2016
 *      Author: tibi
 */

#include <GameState.h>
#include <graphics/SdlRenderer.h>

#include <iostream>
#include <cassert>

#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_ttf.h>

namespace farmlands
{
namespace graphics
{

SdlRenderer::SdlRenderer()
	: m_sdlWindow(nullptr),
	  m_sdlRenderer(nullptr),
	  m_gameState(nullptr)
{
}

SdlRenderer::~SdlRenderer()
{
	if (m_sdlRenderer)
		SDL_DestroyRenderer(m_sdlRenderer);

	if (m_sdlWindow)
		SDL_DestroyWindow(m_sdlWindow);

	SDL_Quit();
}

bool SdlRenderer::initialize(GameState* gameState)
{
	m_gameState = gameState;

	if (SDL_Init(SDL_INIT_VIDEO) != 0) {
		std::cerr << "Failed to initialize SDL!\n";
		return false;
	}

	int imgFlags = IMG_INIT_PNG;
	if (IMG_Init(IMG_INIT_PNG) != imgFlags) {
		std::cerr << "Failed to initialize SDL_image!\n";
		return false;
	}

	if (TTF_Init() != 0) {
		std::cerr << "Failed to initialize SDL_ttf!\n";
		return false;
	}

	m_gameState->viewport.initialized = true;
	m_gameState->viewport.width = 1024;
	m_gameState->viewport.height = 768;
	m_sdlWindow = SDL_CreateWindow("Farmlands", 0, 0, m_gameState->viewport.width, m_gameState->viewport.height, SDL_WINDOW_SHOWN);
	if (!m_sdlWindow) {
		std::cerr << "Failed to create main window!\n";
		return false;
	}

	m_sdlRenderer = SDL_CreateRenderer(m_sdlWindow, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
	if (!m_sdlRenderer) {
		std::cerr << "Failed to create renderer!\n";
		return false;
	}
	SDL_SetRenderDrawBlendMode(m_sdlRenderer, SDL_BlendMode::SDL_BLENDMODE_BLEND);

	return true;
}

void SdlRenderer::renderBegin()
{
	SDL_SetRenderDrawColor(m_sdlRenderer, 0, 0, 0, 255);
	SDL_RenderClear(m_sdlRenderer);
}

void SdlRenderer::renderEnd()
{
	SDL_RenderPresent(m_sdlRenderer);
}

SDL_Texture* SdlRenderer::renderText(const std::string& text, TTF_Font* font, SDL_Color color)
{
	assert(font != nullptr);

	SDL_Surface* surface = TTF_RenderText_Blended(font, text.c_str(), color);
	if (surface == nullptr)
		return nullptr;

	SDL_Texture* texture = SDL_CreateTextureFromSurface(m_sdlRenderer, surface);

	SDL_FreeSurface(surface);
	return texture;
}

} /* namespace graphics */
} /* namespace farmlands */