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#include "app/app.hpp"
#include "conversion.hpp"
#include "engine/vector2.hpp"
#include "random_generator.hpp"
#include <getopt.h>
#include <iostream>
#include <memory>
#include <string_view>
#include <vector>
constexpr unsigned int DEFAULT_MAZE_WIDTH = 40U;
constexpr unsigned int DEFAULT_MAZE_HEIGHT = 20U;
constexpr std::string_view DEFAULT_MAZE_WALL = "█";
namespace
{
void optarg_error(char arg, const std::string_view &error)
{
std::cout << "Error: Invalid option argument for -" << arg << ". " << error
<< std::endl;
exit(EXIT_FAILURE);
}
/**
* Returns the current optarg as a string view.
*/
std::string_view get_str_optarg()
{
return std::string_view(optarg);
}
/**
* Returns the current optarg as a unsigned integer.
*
* @param arg The current command-line argument character
* @param check_zero Whether or not to make sure that the result is not zero
*/
unsigned int get_uint_optarg(char arg, bool check_zero = false)
{
unsigned int num = 0;
try
{
num = str_to_uint(get_str_optarg());
if (check_zero && num == 0)
{
throw "It should not be 0";
}
}
catch (const char *error)
{
optarg_error(arg, std::string_view(error));
}
return num;
}
} // namespace
constexpr std::array<option, 8> options = {
option({"width", required_argument, nullptr, 'w'}),
option({"height", required_argument, nullptr, 'h'}),
option({"wall", required_argument, nullptr, 'W'}),
option({"seed", required_argument, nullptr, 's'}),
option({"start-x", required_argument, nullptr, 'x'}),
option({"start-y", required_argument, nullptr, 'y'}),
option({"help", no_argument, nullptr, 0}),
option({nullptr, 0, nullptr, 0})};
int main(int argc, char *argv[])
{
auto args = std::vector<std::string_view>(argv, argv + argc);
AppOptions app_options;
BoundsOptions default_maze_bounds = {DEFAULT_MAZE_WIDTH, DEFAULT_MAZE_HEIGHT};
app_options.maze_bounds = std::make_shared<Bounds>(default_maze_bounds);
app_options.wall = DEFAULT_MAZE_WALL;
std::unique_ptr<unsigned int> start_x = nullptr;
std::unique_ptr<unsigned int> start_y = nullptr;
char arg = 0;
while ((arg = static_cast<char>(
getopt_long(argc, argv, "w:h:W:s:x:y:", options.data(), nullptr))) != -1)
{
switch (arg)
{
case 'w':
{
app_options.maze_bounds->width(get_uint_optarg(arg, true));
break;
}
case 'h':
{
app_options.maze_bounds->height(get_uint_optarg(arg, true));
break;
}
case 'x':
{
start_x = std::make_unique<unsigned int>(get_uint_optarg(arg));
break;
}
case 'y':
{
start_y = std::make_unique<unsigned int>(get_uint_optarg(arg));
break;
}
case 'W':
{
app_options.wall = get_str_optarg();
break;
}
case 's':
{
auto seed = get_uint_optarg(arg, true);
app_options.random_gen = std::make_shared<RandomNumberGenerator>(seed);
break;
}
case 0:
{
std::cout << "Usage: " << args[0]
<< " [OPTION]...\n\n"
"Options:\n"
" -w, --width WIDTH The width of the maze (Default: "
<< DEFAULT_MAZE_WIDTH
<< ")\n"
" -h, --height HEIGHT The height of the maze (Default: "
<< DEFAULT_MAZE_HEIGHT
<< ")\n"
" -x, --start-x X The x coordinate for the start "
"position "
"(Default: random)\n"
" -y, --start-y Y The y coordinate for the start "
"position "
"(Default: random)\n"
" -W, --wall WALL Single character used as maze walls "
"(Default: '"
<< DEFAULT_MAZE_WALL
<< "')\n"
" -s, --seed SEED The randomization seed used for maze "
"generation\n"
" --help Displays usage information"
<< std::endl;
return EXIT_SUCCESS;
}
case '?':
{
std::cout << "\nTry '" << args[0] << " --help' for more information"
<< std::endl;
return EXIT_FAILURE;
}
default:
abort();
}
}
if (app_options.random_gen == nullptr)
{
app_options.random_gen = std::make_shared<RandomNumberGenerator>();
}
if (start_x == nullptr)
{
start_x = std::make_unique<unsigned int>(
app_options.random_gen->in_range(0, app_options.maze_bounds->width() - 1U));
}
if (start_y == nullptr)
{
start_y = std::make_unique<unsigned int>(
app_options.random_gen->in_range(0, app_options.maze_bounds->height() - 1U));
}
Vector2Options start_coords = {.x = *start_x, .y = *start_y};
app_options.start_coords = std::make_shared<Vector2>(start_coords);
try
{
app_options.maze_bounds->verify_coords(*app_options.start_coords);
}
catch (const char *error)
{
std::cout << "Error: " << error << std::endl;
return EXIT_FAILURE;
}
auto app = App(app_options);
app.run();
}
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