command-parser.js

/**
 * Command Parser
 * BotStuff - https://github.com/CheeseMuffin/BotStuff
 *
 * This file parses command messages.
 *
 * @license MIT license
 */

'use strict';

class Context {
	constructor(target, room, user, command, time) {
		this.target = target ? target.trim() : '';
		this.room = room;
		this.user = user;
		this.command = command;
		this.time = time || Date.now();
	}

	say(text) {
		this.room.say(text);
	}

	run(command, target) {
		if (command) {
			command = Tools.toId(command);
			if (!Commands[command]) return;
			let type = typeof Commands[command];
			if (type === 'string') {
				command = Commands[command];
				type = typeof Commands[command];
			}
			if (type !== 'function') return;
			target = target.trim();
		} else {
			command = this.command;
			target = this.target;
		}
		try {
			Commands[command].call(this, target, this.room, this.user, this.command, this.time);
		} catch (e) {
			let stack = e.stack;
			stack += 'Additional information:\n';
			stack += 'Command = ' + command + '\n';
			stack += 'Target = ' + target + '\n';
			stack += 'Time = ' + new Date(this.time).toLocaleString() + '\n';
			stack += 'User = ' + this.user.name + '\n';
			stack += 'Room = ' + (this.room === this.user ? 'in PM' : this.room.id);
			console.log(stack);
		}
	}
}

class CommandParser {
	parse(message, room, user, time) {
		message = message.trim();
		if (message === '/me in' && room.game) {
			room.game.join(user);
		} else {
			if (message.charAt(0) !== Config.commandCharacter) return;
			
			message = message.substr(1);
			let spaceIndex = message.indexOf(' ');
			let target = '';
			let command = '';
			if (spaceIndex !== -1) {
				command = message.substr(0, spaceIndex);
				target = message.substr(spaceIndex + 1);
			} else {
				command = message;
				Games.sayDescription(command, room);
			}
			if (!Commands[command]) return;
			let type = typeof Commands[command];
			if (type === 'string') {
				command = Commands[command];
				type = typeof Commands[command];
			}
			if (type !== 'function') return;
			new Context(target, room, user, command, time).run();
		}
	}
}

module.exports = new CommandParser();