command-parser.js

'use strict';
class Context {
	constructor(target, user, room, command, levelsDeep) {
		this.user = user;
		this.room = room;
		this.command = command;
		this.target = target;
		this.targetUser = this.getTargetUser();
		this.canBroadcast = this.can(command, " ");
		this.levelsDeep = levelsDeep;
	}

	getTargetUser() {
		if (!this.target || !toId(this.target)) return this.targetUser = null;
		let targetId = toId(this.target.split(",")[0]);
		if (Users.users.has(targetId)) {
			return this.targetUser = Users.get(targetId);
		}
		return targetId;
	}

	send(message) {
		if (message.length > 300 && !["!", "/"].includes(message.charAt(0))) return this.splitSend(message);
		
		if (this.canBroadcast && this.room) {
			this.room.send(this.user.userid, message, this.user.isDev());
		}
		else {
			this.user.sendTo(message);
		}
	}
	
	splitSend(message) {
		let chunks = message.match(/(?:[^\s]{300,}?|.{1,294})(?:\s|$)/g);
		
		if (!chunks || !chunks.length) return false;
		chunks = chunks.map(p => p.trim());
		
		for (let i = 0; i < chunks.length; i++) {
			let chunk = chunks[i];
			if (chunk.length > 300) {
				let chunks2 = chunk.match(/.{1,294}/g);
				for (let j = 0; j < chunks2.length; j++) {
					this.send((i || j ? "..." : "") + chunks2[j] + (i === chunks.length - 1 && j === chunks2.length - 1 ? "" : "..."));
				}
				continue;
			}
			this.send((i ? "..." : "") + chunk + (i === chunks.length - 1 ? "" : "..."));
		}
	}

    can(command, details) {
        if (command === "dev") {
            if (this.user.isDev()) return true;
            return false;
        }
        
        this.canBroadcast = this.user.can(command, this.room, this.targetUser, details);
        return this.canBroadcast;
    }

	run(original) {
		let success;
		if (Commands[this.command]) {
			success = Commands[this.command].call(this, this.target, this.room, this.user, original);
		}
		success = !(success === false);
		return success;
	}
	parse(post) {
		return commandParser(post.replace(/^\//i, this.room ? this.room.commandCharacter[0] : Config.defaultCharacter[0]), this.user, this.room, true, this.levelsDeep + 1);
	}
}

exports.commandParser = function(message, user, room, bypassMonitor, levelsDeep) {
	if (user.userid === toId(Monitor.username)) return false;
	if (!message || (room && !room.commandCharacter.includes(message.charAt(0))) || (!room && !Config.defaultCharacter.includes(message.charAt(0)))) return false;
	let userIsBanned = Monitor.isBanned(user.userid);
	//get command
	let originalCommand = toId(message.split(" ")[0]);
	let command = originalCommand;
	let target = message.split(" ").slice(1).join(" ");
	
	// limit recursion to prevent endless loops alias and addcom.
	if (!levelsDeep) levelsDeep = 0;
	if (levelsDeep > 10) {
		return log("error", "Message: " + message + "\n			  Too much recursion.");
	}
	
	//get actual command
	if (Commands[command]) {
		if (typeof Commands[command] === "string") command = Commands[command];
		//check for ban
		if ((userIsBanned === "ban" || (userIsBanned && !Config.lockedCommands[command])) && !user.isDev()) return false;
		let context = new Context(target, user, room, command, levelsDeep);
		let success;
		try {
			success = context.run(originalCommand);
		}
		catch (e) {
			console.log("");
			console.log(e.stack);
			console.log("");
			console.log("   User: " + user.name);
			console.log("   Room: " + (room ? room.name : "PMs"));
			console.log("Message: " + message);
			console.log("   Date: " + getEST());
			console.log("");
		}
		if (success && !bypassMonitor) {
			//run the monitor
			Monitor.run(user, room, command, !room);
		}
		return;
	}
	//run custom commands
	let globalCCon, roomCCon;
	globalCCon = Db("customcommands").get(["global", command], null);
	if (room) {
		roomCCon = Db("customcommands").get([room.id, command], null);
	}
	let customCommand = roomCCon || globalCCon;
	if (customCommand && (!userIsBanned || user.isDev())) {
		Plugins.runCustomCommand(target, room, user, customCommand, !room, levelsDeep);
		Monitor.run(user, room, "customcommand", !room);
		return;
	}
}