#include <SDL3/SDL.h>
#include <SDL3/SDL_events.h>
#include <thread>
#include <vector>

#include "View.h"
#include "ViewController.h"

using namespace std;

View::View(Museum & m) : controller(m, *this) {
	this->worker = new std::thread(&View::work, this);
}

View::~View() {
	this->open = false;
	this->worker->join();
	if (this->worker != nullptr) {
		delete this->worker;
		this->worker = nullptr;
	}
}

void View::work() {
	this->window_init();

	while (this->open) {
		for (SDL_Event e; SDL_PollEvent(&e);) {
			if (e.type == SDL_EVENT_QUIT) {
				this->open = false;
				continue;
			}
			if (e.type == SDL_EVENT_KEY_DOWN) {
				if (e.key.repeat) continue;
				this->controller.ev_keydown(static_cast<KeyboardCode>(e.key.scancode));
			}
			if (e.type == SDL_EVENT_MOUSE_BUTTON_DOWN) {
				this->controller.ev_mousedown(static_cast<MouseCode>(e.button.button));
			}
			if (e.type == SDL_EVENT_MOUSE_MOTION) {
				this->controller.ev_mousemove(e.motion.x, e.motion.y);
			}
		}

		this->draw_begin();
		this->controller.update();
		this->draw_end();
	}

	this->window_deinit();
}

void View::window_init() {
	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
	this->window = SDL_CreateWindow(
		"dpa",
		this->width,
		this->height,
		SDL_WINDOW_OPENGL
	);
	this->renderer = SDL_CreateRenderer(this->window, NULL);
}

void View::window_deinit() {
	if (this->renderer != nullptr) {
		SDL_DestroyRenderer(this->renderer);
		this->renderer = nullptr;
	}
	if (this->window != nullptr) {
		SDL_DestroyWindow(this->window);
		this->window = nullptr;
	}

	SDL_Quit();
}

void View::window_size(unsigned int width, unsigned int height) {
	if (this->width == width && this->height == height) return;

	SDL_SetWindowSize(this->window, width, height);
	this->width = width;
	this->height = height;
}

void View::draw_begin() {
	SDL_RenderClear(this->renderer);
}

void View::draw_end() {
	SDL_SetRenderDrawColor(this->renderer, 0, 0, 0, 255);
	SDL_RenderPresent(this->renderer);
}

void View::draw_rect(Rectangle r, Color c) {
	SDL_SetRenderDrawColor(this->renderer, c.red, c.green, c.blue, 255);
	SDL_FRect rect = {
		.x = static_cast<float>(r.x),
		.y = static_cast<float>(r.y),
		.w = static_cast<float>(r.width),
		.h = static_cast<float>(r.height),
	};
	SDL_RenderFillRect(this->renderer, &rect);
}

typedef struct {
	void (* callback)(std::vector<std::string> files, void* data);
	void * data;
} tmp_data;
void View::dialog_file(void(*callback)(std::vector<std::string> files, void* data), void* data) {
	tmp_data * temp = new tmp_data({
		.callback = callback,
		.data = data,
	});
	SDL_ShowOpenFileDialog([](void * userdata, const char * const * files, int) -> void {
		tmp_data * temp = static_cast<tmp_data*>(userdata);
		vector<string> out = {};
		for (; *files != NULL; files++)
			out.push_back(string(*files));
		(*temp->callback)(out, temp->data);
		delete temp;
	}, temp, this->window, NULL, 0, NULL, true);
}