function similar_text(first, second, percent) {
    if (first === null || second === null || typeof first === 'undefined' || typeof second === 'undefined') {
        return 0;
    }

    first += '';
    second += '';

    var pos1 = 0,
        pos2 = 0,
        max = 0,
        firstLength = first.length,
        secondLength = second.length,
        p, q, l, sum;

    max = 0;

    for (p = 0; p < firstLength; p++) {
        for (q = 0; q < secondLength; q++) {
            for (l = 0;
                (p + l < firstLength) && (q + l < secondLength) && (first.charAt(p + l) === second.charAt(q + l)); l++)
            ;
            if (l > max) {
                max = l;
                pos1 = p;
                pos2 = q;
            }
        }
    }

    sum = max;

    if (sum) {
        if (pos1 && pos2) {
            sum += this.similar_text(first.substr(0, pos1), second.substr(0, pos2));
        }

        if ((pos1 + max < firstLength) && (pos2 + max < secondLength)) {
            sum += this.similar_text(first.substr(pos1 + max, firstLength - pos1 - max), second.substr(pos2 + max,
                secondLength - pos2 - max));
        }
    }

    if (!percent) {
        return sum;
    } else {
        return (sum * 200) / (firstLength + secondLength);
    }
}
MPP.client.on("a", function(msg) {

    function sendChat(msg) {
        setTimeout(function() {
            MPP.chat.send(msg);
        }, 1500);
    }

    function getUser(target) {
        for (var id in MPP.client.ppl) {
            if (!MPP.client.ppl.hasOwnProperty(id)) continue;
            var part = MPP.client.ppl[id];
            if (similar_text(part.name.toLowerCase(), target) >= 7) {
                return part;
                break;
            } else if (part.name.toLowerCase().indexOf(target) !== -1) {
                return part;
                break;
            }
        }
    }
    var args = msg.a.split(" ");
    var cmd = args[0].toLowerCase();
    args = args.slice(1);
    var argcat = function(start, end) {
        args = message.split(" ");
        args = args.slice(1);
        var parts = args.slice(start || 0, end || undefined);
        var result = "";
        for (var i = 0; i < parts.length; i++) {
            result += parts[i];
            if (i + 1 < parts.length) {
                result += " ";
            }
        }
        return result;
    };

    if (cmd == "/help") {
        sendChat("Commands: /find, /command");
        if (msg.p._id == MPP.client.getOwnParticipant()._id) {
            sendChat("Op commands: /rename")
        }
    }

    if (cmd === "/find") {
        var target = msg.a.substring(cmd.length).trim();
        var part = getUser(target.toLowerCase());
        if (target == "") {
            sendChat("Usage /find [person]");
            return;
        }
        if (part) {
            if (part.name == msg.p.name) {
                sendChat("You found yourself");
                return;
            }
            sendChat("Found: " + part.name);
        } else {
            sendChat("User not found");
        }
    }
    if (cmd == "/rename") {
        if (msg.p._id == MPP.client.getOwnParticipant()._id) {
            MPP.client.sendArray([{
                m: "userset",
                set: {
                    name: msg.a.substring(cmd.length).trim()
                }
            }]);
        }
    }

    if (cmd == "/command") {
        sendChat("stuff");
    }
});