#include "resources.h"
#include "style.h"
#include <clay/clay.h>
#include <SDL3/SDL_log.h>
#include <SDL3/SDL_render.h>
#include <SDL3_image/SDL_image.h>
#include <cstddef>

#ifndef CERA_RESOURCE_REGISTRY_SIZE
#define CERA_RESOURCE_REGISTRY_SIZE 64
#endif

namespace cera {
struct ResourceRegistry {
	void *data;
	DestructorFn destructor;
};

TTF_Font *defaultFont[FONT_MAX];
TTF_TextEngine *textEngine = nullptr;

ResourceRegistry resources[CERA_RESOURCE_REGISTRY_SIZE]{};
size_t usedResources{0};

void SetDefaultFont(char const *path) {
	// LOAD REGULAR FONT
	defaultFont[FONT_REGULAR] = TTF_OpenFont(path, cera::baseFontSize * 5);
	if (defaultFont[FONT_REGULAR] == nullptr) {
		SDL_LogError(SDL_LOG_CATEGORY_ERROR, "TTF_OpenFont failed: Failed to load default font '%s': %s", path, SDL_GetError());
		exit(6);
	}
	TTF_SetFontHinting(defaultFont[FONT_REGULAR], TTF_HINTING_LIGHT_SUBPIXEL);
	StoreResource(defaultFont[FONT_REGULAR], (DestructorFn)&TTF_CloseFont);
	// LOAD BOLD FONT
	defaultFont[FONT_BOLD] = TTF_OpenFont(path, cera::baseFontSize * 5);
	if (defaultFont[FONT_BOLD] == nullptr) {
		SDL_LogError(SDL_LOG_CATEGORY_ERROR, "TTF_OpenFont failed: Failed to load default bold font '%s': %s", path, SDL_GetError());
		exit(6);
	}
	TTF_SetFontHinting(defaultFont[FONT_BOLD], TTF_HINTING_LIGHT_SUBPIXEL);
	TTF_SetFontStyle(defaultFont[FONT_BOLD], TTF_STYLE_BOLD);
	StoreResource(defaultFont[FONT_BOLD], (DestructorFn)&TTF_CloseFont);
	SDL_Log("SetDefaultFont: Success");
}

void StoreResource(void *data, DestructorFn destructor) {
	for (size_t i{0}; i < usedResources; ++i) {
		if(resources[i].data == nullptr) {
			resources[i].data = data;
			resources[i].destructor = destructor;
			return;
		}
	}
	if(usedResources < CERA_RESOURCE_REGISTRY_SIZE) {
		resources[usedResources].data = data;
		resources[usedResources].destructor = destructor;
		++usedResources;
		return;
	}
	SDL_LogError(SDL_LOG_CATEGORY_ERROR, "Failed to register resource, expect memory leaks. Consider using less resources or defining a higher CERA_RESOURCE_REGISTRY_SIZE at compile time");
}

void CleanupResources() {
	for (size_t i{0}; i < usedResources; ++i) {
		if(resources[i].data) {
			resources[i].destructor(resources[i].data);
		}
	}
	usedResources = 0;
}
}