import std.stdio;
import std.range;
import std.algorithm;

import cm3d2;

void main(string[] args)
{
	if (args.length < 2)
	{
		help(args[0]);
		return;
	}

	switch (args[1])
	{
		case "help":
		case "-h":
		case "--help":
			help(args[0]);
			break;
		case "menu-to-sdl":
			ubyte[] data = stdin.byChunk(4096).joiner.array;
			writeln(Menu.fromMenu(data).toSDL());
			break;
		case "sdl-to-menu":
        	throw new Exception("Not implemented yet");
		default:
			writeln("Unknown option '" ~ args[1] ~ "'");
			writeln();
			goto case "help";
	}
}

void help(string toolPath)
{
	writeln("Usage: " ~ toolPath ~ " <command>");
	writeln();

	void showCommandUsage(string command, string description)
	{
		writeln("    " ~ toolPath ~ " " ~ command);
		writeln("        " ~ description);
	}

	showCommandUsage("menu-to-sdl", "Convert .menu to SDL");
	showCommandUsage("sdl-to-menu", "Convert SDL to .menu");

	writeln();
	writeln("Reads input from stdin and writes output to stdout.");
}