#include <SDL2/SDL_ttf.h>

#include <fmt/format.h>
#include "rsdl.hpp"
#include "resources/font.hpp"

#include <pragmautil.hpp>

namespace hibis::rsdl {
	RSDL::RSDL(std::string title, IntVec2 size, LoggerCallback callback) {
		mLoggerCallback = callback;

		SDL_Init(SDL_INIT_VIDEO);

		// Create window. `title` is cast to a char* here as tostd::stringz returns an immutable char* (causing an error)
		mWindow = SDL_CreateWindow(title.c_str(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
									size.x, size.y, SDL_WINDOW_RESIZABLE);

		if (mWindow == NULL) {
			mLoggerCallback(Fatal, fmt::format("Couldn't create window! what: {}", SDL_GetError()));
			SDL_Quit();
			exit(1);
		}

		mRendererContext = SDL_CreateRenderer(mWindow, -1, SDL_RENDERER_ACCELERATED);

		if (mRendererContext == NULL) {
			mLoggerCallback(Fatal, fmt::format("Couldn't create renderer! what: {}", SDL_GetError()));
			SDL_DestroyWindow(mWindow);
			SDL_Quit();
			exit(1);
		}

		if (TTF_Init() != 0) {
			mLoggerCallback(Fatal, fmt::format("Couldn't load SDL_TTF! what: %d", TTF_GetError()));
			SDL_DestroyRenderer(mRendererContext);
			SDL_DestroyWindow(mWindow);
			SDL_Quit();
			TTF_Quit();
			exit(1);
		}
	}

	RSDL::~RSDL() {
		TTF_Quit();
		SDL_DestroyRenderer(mRendererContext);
		SDL_DestroyWindow(mWindow);
		SDL_Quit();
	}

	void RSDL::clearScreen(Color col) {
		SDL_SetRenderDrawColor(mRendererContext, col.r, col.g, col.b, col.a);
		SDL_RenderClear(mRendererContext);
	}

	void RSDL::renderCurrent() {
		SDL_UpdateWindowSurface(mWindow);
		SDL_RenderPresent(mRendererContext);
	}

	void RSDL::drawText(Resource* resource, std::string text, IntVec2 pos, Color color) {
		WARNING("tulip what the hell is this, this sucks.\nAvoid remaking textures every time text has to be drawn")
		if (Font* font = (Font*)resource) {
			SDL_Surface* textSurface = TTF_RenderText_Solid(font->mLoadedFont, text.c_str(), SDL_Color {color.r, color.g, color.b, color.a });
			SDL_Texture* textTexture = SDL_CreateTextureFromSurface(mRendererContext, textSurface);

			int width = 0;
			int height = 0;

			TTF_SizeText(font->mLoadedFont, text.c_str(), &width, &height);

			SDL_Rect textRect;
			textRect.x = pos.x;
			textRect.y = pos.y;
			textRect.w = width;
			textRect.h = height;

			SDL_RenderCopy(mRendererContext, textTexture, NULL, &textRect);

			SDL_DestroyTexture(textTexture);
			SDL_FreeSurface(textSurface);
		}
	}

	void RSDL::preDraw() {}
	void RSDL::postDraw() {}

	void RSDL::update() {
		SDL_Event event;

		while(SDL_PollEvent(&event)) {
			if (event.type == SDL_QUIT) mKeepOpen = false;
		}
	}

	void RSDL::setWindowTitle(std::string title) {
		SDL_SetWindowTitle(mWindow, title.c_str());
	}
}