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/*
 * Copyright (C) 2021  P. J. McDermott
 *
 * This file is part of Dodge Balls
 *
 * Dodge Balls is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Dodge Balls is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Dodge Balls.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <SDL.h>
#include <SDL_ttf.h>
#include <stdlib.h>
#include "game.h"
#include "main-menu.h"
#include "main.h"
#include "output.h"
#include "util.h"

static SDL_Texture *
_db_main_menu_text(TTF_Font *font, const char *text, SDL_Color *color,
		SDL_Renderer *renderer, SDL_Rect *rect)
{
	SDL_Surface *surface;
	SDL_Texture *texture;

	surface = TTF_RenderText_Blended(font, text, *color);
	if (surface == NULL) {
		db_err("Failed to create surface (%s)", TTF_GetError());
		return NULL;
	}

	texture = SDL_CreateTextureFromSurface(renderer, surface);
	if (texture == NULL) {
		db_err("Failed to create texture (%s)", SDL_GetError());
		return NULL;
	}

	rect->w = surface->w;
	rect->h = surface->h;

	SDL_FreeSurface(surface);

	return texture;
}

void
db_main_menu(void)
{
	const char      *games_dir;
	char            *font_path;
	SDL_Renderer    *renderer;
	SDL_Color        text_color;
	SDL_Rect         dest_rect;
	TTF_Font        *font;
	SDL_Texture     *texture_title;
	struct db_game **games;
	int              n;
	int              i;

	games_dir = db_get_games_dir();
	font_path = db_strcat(db_get_fonts_dir(), "/UbuntuTitling-Bold.ttf");

	renderer = db_get_renderer();

	/* Render background */
	SDL_SetRenderDrawColor(renderer, 0x7F, 0x7F, 0x7F, 0xFF);
	SDL_RenderClear(renderer);

	text_color.r = 0x00;
	text_color.g = 0x00;
	text_color.b = 0xFF;
	text_color.a = 0xFF;

	/* Render title text */
	font = TTF_OpenFont(font_path, 48);
	if (font == NULL) {
		db_err("Failed to open font (%s)", TTF_GetError());
		free(font_path);
		return;
	}
	texture_title = _db_main_menu_text(font, "Dodge Balls", &text_color,
			renderer, &dest_rect);
	if (texture_title == NULL) {
		free(font_path);
		TTF_CloseFont(font);
		return;
	}
	dest_rect.x = 16;
	dest_rect.y = 16;
	SDL_RenderCopy(renderer, texture_title, NULL, &dest_rect);
	SDL_DestroyTexture(texture_title);

	/* Find games */
	n = db_games_find(games_dir, &games);
	if (n > 0) {
		printf("%d games:\n", n);
		for (i = 0; i < n; ++i) {
			printf("\t%s - %s\n", db_game_get_name(games[i]),
					db_game_get_desc(games[i]));
			db_game_free(games[i]);
		}
		free(games);
	}

	SDL_RenderPresent(renderer);
	SDL_Delay(1000);

	free(font_path);
	TTF_CloseFont(font);
}