#include "instructions.h"
#include <iostream>

// Constructor
Instructions::Instructions(SDL_Renderer *renderer, Screen *screen, Asset *asset, Input *input, Lang *lang, param_t *param, section_t *section)
{
	// Copia los punteros
	this->renderer = renderer;
	this->screen = screen;
	this->asset = asset;
	this->input = input;
	this->lang = lang;
	this->param = param;
	this->section = section;

	// Reserva memoria para los punteros
	Texture *item1 = new Texture(renderer, asset->get("item_points1_disk.png"));
	itemTextures.push_back(item1);

	Texture *item2 = new Texture(renderer, asset->get("item_points2_gavina.png"));
	itemTextures.push_back(item2);

	Texture *item3 = new Texture(renderer, asset->get("item_points3_pacmar.png"));
	itemTextures.push_back(item3);

	Texture *item4 = new Texture(renderer, asset->get("item_clock.png"));
	itemTextures.push_back(item4);

	Texture *item5 = new Texture(renderer, asset->get("item_coffee.png"));
	itemTextures.push_back(item5);

	Texture *item6 = new Texture(renderer, asset->get("item_coffee_machine.png"));
	itemTextures.push_back(item6);

	eventHandler = new SDL_Event();

	sprite = new Sprite(0, 0, 16, 16, itemTextures[0], renderer);
	text = new Text(asset->get("smb2.png"), asset->get("smb2.txt"), renderer);

	// Crea un backbuffer para el renderizador
	backbuffer = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, param->gameWidth, param->gameHeight);
	SDL_SetTextureBlendMode(backbuffer, SDL_BLENDMODE_BLEND);

	// Inicializa variables
	section->name = SECTION_PROG_INSTRUCTIONS;
	ticks = 0;
	ticksSpeed = 15;
	manualQuit = false;
	counter = 0;
	counterEnd = 600;
}

// Destructor
Instructions::~Instructions()
{
	for (auto texture : itemTextures)
	{
		texture->unload();
		delete texture;
	}
	itemTextures.clear();

	delete sprite;
	delete eventHandler;
	delete text;

	SDL_DestroyTexture(backbuffer);
}

// Actualiza las variables
void Instructions::update()
{
	// Comprueba las entradas
	checkInput();

	// Actualiza las variables
	if (SDL_GetTicks() - ticks > ticksSpeed)
	{
		// Actualiza el contador de ticks
		ticks = SDL_GetTicks();

		counter++;

		if (counter == counterEnd)
		{
			section->name = SECTION_PROG_TITLE;
			section->subsection = SUBSECTION_TITLE_1;
		}
	}
}

// Pinta en pantalla
void Instructions::render()
{
	// Pinta en pantalla
	SDL_Rect window = {0, 0, param->gameWidth, param->gameHeight};
	SDL_Rect srcRect = {0, 0, 16, 16};

	const color_t orangeColor = {0xFF, 0x7A, 0x00};

	const SDL_Rect destRect1 = {60, 88 + (16 * 0), 16, 16}; // Disquito
	const SDL_Rect destRect2 = {60, 88 + (16 * 1), 16, 16}; // Gavineixon
	const SDL_Rect destRect3 = {60, 88 + (16 * 2), 16, 16}; // Pacmar
	const SDL_Rect destRect4 = {60, 88 + (16 * 3), 16, 16}; // Time Stopper
	const SDL_Rect destRect5 = {60, 88 + (16 * 4), 16, 16}; // Coffee

	// Pinta en el backbuffer el texto y los sprites
	SDL_SetRenderTarget(renderer, backbuffer);
	SDL_SetRenderDrawColor(renderer, bgColor.r, bgColor.g, bgColor.b, 255);
	SDL_RenderClear(renderer);

	// Escribe el texto
	text->writeDX(TXT_CENTER | TXT_COLOR | TXT_SHADOW, GAMECANVAS_CENTER_X, 8, lang->getText(11), 1, orangeColor, 1, shdwTxtColor);
	text->writeDX(TXT_CENTER | TXT_COLOR | TXT_SHADOW, GAMECANVAS_CENTER_X, 24, lang->getText(12), 1, noColor, 1, shdwTxtColor);
	text->writeDX(TXT_CENTER | TXT_COLOR | TXT_SHADOW, GAMECANVAS_CENTER_X, 34, lang->getText(13), 1, noColor, 1, shdwTxtColor);
	text->writeDX(TXT_CENTER | TXT_COLOR | TXT_SHADOW, GAMECANVAS_CENTER_X, 48, lang->getText(14), 1, noColor, 1, shdwTxtColor);
	text->writeDX(TXT_CENTER | TXT_COLOR | TXT_SHADOW, GAMECANVAS_CENTER_X, 58, lang->getText(15), 1, noColor, 1, shdwTxtColor);
	text->writeDX(TXT_CENTER | TXT_COLOR | TXT_SHADOW, GAMECANVAS_CENTER_X, 75, lang->getText(16), 1, orangeColor, 1, shdwTxtColor);

	text->writeShadowed(84, 92, lang->getText(17), shdwTxtColor);
	text->writeShadowed(84, 108, lang->getText(18), shdwTxtColor);
	text->writeShadowed(84, 124, lang->getText(19), shdwTxtColor);
	text->writeShadowed(84, 140, lang->getText(20), shdwTxtColor);
	text->writeShadowed(84, 156, lang->getText(21), shdwTxtColor);

	// Disquito
	sprite->setTexture(itemTextures[0]);
	sprite->setPos(destRect1);
	srcRect.y = 16 * (((counter + 12) / 36) % 2);
	sprite->setSpriteClip(srcRect);
	sprite->render();

	// Gavineixon
	sprite->setTexture(itemTextures[1]);
	sprite->setPos(destRect2);
	srcRect.y = 16 * (((counter + 9) / 36) % 2);
	sprite->setSpriteClip(srcRect);
	sprite->render();

	// Pacmar
	sprite->setTexture(itemTextures[2]);
	sprite->setPos(destRect3);
	srcRect.y = 16 * (((counter + 6) / 36) % 2);
	sprite->setSpriteClip(srcRect);
	sprite->render();

	// Time Stopper
	sprite->setTexture(itemTextures[3]);
	sprite->setPos(destRect4);
	srcRect.y = 16 * (((counter + 3) / 36) % 2);
	sprite->setSpriteClip(srcRect);
	sprite->render();

	// Coffee
	sprite->setTexture(itemTextures[4]);
	sprite->setPos(destRect5);
	srcRect.y = 16 * (((counter + 0) / 36) % 2);
	sprite->setSpriteClip(srcRect);
	sprite->render();

	// Cambia el destino de renderizado
	SDL_SetRenderTarget(renderer, nullptr);

	// Prepara para empezar a dibujar en la textura de juego
	screen->start();

	// Limpia la pantalla
	screen->clean(bgColor);

	// Establece la ventana del backbuffer
	window.y = std::max(8, param->gameHeight - counter + 100);

	// Copia el backbuffer al renderizador
	SDL_RenderCopy(renderer, backbuffer, nullptr, &window);

	// Vuelca el contenido del renderizador en pantalla
	screen->blit();
}

// Comprueba los eventos
void Instructions::checkEvents()
{
	// Comprueba los eventos que hay en la cola
	while (SDL_PollEvent(eventHandler) != 0)
	{
		// Evento de salida de la aplicación
		if (eventHandler->type == SDL_QUIT)
		{
			section->name = SECTION_PROG_QUIT;
			break;
		}
	}
}

// Comprueba las entradas
void Instructions::checkInput()
{
	if (input->checkInput(input_exit, REPEAT_FALSE))
	{
		section->name = SECTION_PROG_QUIT;
	}

	else if (input->checkInput(input_window_fullscreen, REPEAT_FALSE))
	{
		screen->switchVideoMode();
	}

	else if (input->checkInput(input_window_dec_size, REPEAT_FALSE))
	{
		screen->decWindowSize();
	}

	else if (input->checkInput(input_window_inc_size, REPEAT_FALSE))
	{
		screen->incWindowSize();
	}

	else if (input->checkInput(input_pause, REPEAT_FALSE) || input->checkInput(input_accept, REPEAT_FALSE) || input->checkInput(input_fire_left, REPEAT_FALSE) || input->checkInput(input_fire_center, REPEAT_FALSE) || input->checkInput(input_fire_right, REPEAT_FALSE))
	{
			JA_StopMusic();
			section->name = SECTION_PROG_TITLE;
			section->subsection = SUBSECTION_TITLE_1;
	}
}

// Bucle para la pantalla de instrucciones
void Instructions::run()
{
	while (section->name == SECTION_PROG_INSTRUCTIONS)
	{
		update();
		checkEvents();
		render();
	}
}