/*
 * 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 <stdlib.h>
#include "ball.h"
#include "defs.h"
#include "level.h"
#include "map.h"
#include "output.h"

struct db_level {
	char            *game_id;
	char            *level_id;
	struct db_level *next;
	int              player_x;
	int              player_y;
	int              player_r;
	int              player_a;
	int              player_s;
	int              target_x;
	int              target_y;
	int              target_r;
	struct db_ball  *ball_head;
	struct db_ball  *ball_tail;
};

struct db_level *
db_level_new(const char *game_id, const char *level_id, struct db_level *prev)
{
	struct db_level *level;

	level = calloc(1, sizeof(*level));
	if (level == NULL) {
		db_err("Failed to allocate memory");
		return NULL;
	}

	level->game_id = strdup(game_id);
	if (level->game_id == NULL) {
		db_err("Failed to allocate memory");
		free(level);
		return NULL;
	}

	level->level_id = strdup(level_id);
	if (level->level_id == NULL) {
		db_err("Failed to allocate memory");
		free(level->game_id);
		free(level);
		return NULL;
	}

	if (prev != NULL) {
		prev->next = level;
	}

	return level;
}

int
db_level_play(SDL_Renderer *renderer, struct db_level *level)
{
	struct db_map *map;
	SDL_Texture   *map_texture;

	db_dbg("Playing %s/%s", level->game_id, level->level_id);

	map = db_map_new(level->game_id, level->level_id);
	if (map == NULL) {
		return -1;
	}
	map_texture = db_map_render(map, renderer);

	if (SDL_SetRenderDrawColor(renderer,
				DB_COLOR_BACK_R, DB_COLOR_BACK_G,
				DB_COLOR_BACK_B, DB_COLOR_BACK_A) != 0) {
		db_err("Failed to set drawing color (%s)", SDL_GetError());
		return -1;
	}
	if (SDL_RenderClear(renderer) != 0) {
		db_err("Failed to clear screen (%s)", SDL_GetError());
		return -1;
	}
	if (SDL_RenderCopy(renderer, map_texture, NULL, NULL) != 0) {
		db_err("Failed to copy texture (%s)", SDL_GetError());
		return -1;
	}
	SDL_RenderPresent(renderer);
	SDL_Delay(1000);

	return 0;
}

struct db_level *
db_level_next(struct db_level *level)
{
	return level->next;
}