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/*
 * Copyright (C) 2021  P. J. McDermott
 *
 * This file is part of Maze Fight
 *
 * Maze Fight 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.
 *
 * Maze Fight 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 Maze Fight.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <SDL.h>
#include <SDL_ttf.h>
#include <stdlib.h>
#include <time.h>
#include "defs.h"
#include "dirs.h"
#include "maze.h"
#include "splash.h"
#include "util.h"
#include "widget.h"

int
mf_splash(SDL_Renderer *renderer)
{
	char           *font_path;
	SDL_Color       text_color;
	TTF_Font       *font;
	SDL_Rect        title_rect;
	SDL_Texture    *title_texture;
	SDL_Rect        form_rect;
	struct mf_maze *maze;
	SDL_Color       maze_color;
	SDL_Event       event;

	font_path = mf_strcat(mf_get_fonts_dir(), "/FifteenTwenty-Regular.ttf");

	text_color.r = MF_COLOR_FORE_R;
	text_color.g = MF_COLOR_FORE_G;
	text_color.b = MF_COLOR_FORE_B;
	text_color.a = MF_COLOR_FORE_A;

	/* Render title text */
	font = TTF_OpenFont(font_path, MF_SPLASH_TITLE_FONT_S);
	if (font == NULL) {
		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
				"Couldn't open font: %s",
				TTF_GetError());
		free(font_path);
		return -1;
	}
	title_texture = mf_widget_text(font, "Maze Fight", &text_color,
			renderer, &title_rect);
	if (title_texture == NULL) {
		goto err;
	}
	TTF_CloseFont(font);
	font = NULL;
	title_rect.x = (MF_WINDOW_W - title_rect.w) / 2;
	title_rect.y += MF_SPLASH_WINDOW_P + MF_SPLASH_FORM_P;

	/* TODO: Widgets */

	/* TODO: Size to widgets and center in window */
	form_rect.x = MF_SPLASH_WINDOW_P;
	form_rect.y = MF_SPLASH_WINDOW_P;
	form_rect.w = MF_WINDOW_W - MF_SPLASH_WINDOW_P*2;
	form_rect.h = MF_WINDOW_H - MF_SPLASH_WINDOW_P*2;

	free(font_path);
	font_path = NULL;

	/* Create maze */
	maze = mf_maze_new(time(NULL),
			MF_WINDOW_W / MF_SPLASH_MAZE_CELL_W,
			MF_WINDOW_H / MF_SPLASH_MAZE_CELL_W);
	if (maze == NULL) {
		goto err;
	}
	maze_color.r = MF_COLOR_MAZE_R;
	maze_color.g = MF_COLOR_MAZE_G;
	maze_color.b = MF_COLOR_MAZE_B;
	maze_color.a = MF_COLOR_MAZE_A;

	SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);

	while (SDL_WaitEvent(&event)) {
		switch (event.type) {
			case SDL_QUIT:
				goto quit;
			default:
				break;
		}
		SDL_SetRenderDrawColor(renderer,
				MF_COLOR_BACK_R, MF_COLOR_BACK_G,
				MF_COLOR_BACK_B, MF_COLOR_BACK_A);
		SDL_RenderClear(renderer);
		mf_maze_render(maze, renderer, &maze_color,
				MF_SPLASH_MAZE_CELL_W);
		SDL_SetRenderDrawColor(renderer,
				MF_COLOR_FORM_R, MF_COLOR_FORM_G,
				MF_COLOR_FORM_B, MF_COLOR_FORM_A);
		SDL_RenderFillRect(renderer, &form_rect);
		SDL_RenderCopy(renderer, title_texture, NULL, &title_rect);
		SDL_RenderPresent(renderer);
	}

 quit:
	SDL_DestroyTexture(title_texture);
	title_texture = NULL;

	mf_maze_destroy(&maze);

	return 0;

 err:
	if (font_path != NULL) {
		free(font_path);
	}
	if (font != NULL) {
		TTF_CloseFont(font);
	}
	if (title_texture != NULL) {
		SDL_DestroyTexture(title_texture);
	}
	return -1;
}