Name DataBase

// ==UserScript==
// @name         Vidkunssonn's Name Database
// @author       Vikdunssonn
// @version      2.0
// @grant        2017
// @description  Records the name of every person that goes into the same room you're in and organizes them by _ids.x
// @namespace    http://www.multiplayerpiano.com/
// @match        http://www.multiplayerpiano.com/
// @include      http://www.multiplayerpiano.com/*
// @include      http://www.ourworldofpixels.com/piano/*
// ==/UserScript==

//If you don't already have dataBase created, this creates it for you.
if (!localStorage.dataBase) {
    dataBase = {"totalnames":0};
} else {
    dataBase = JSON.parse(localStorage.dataBase);
}

//Function for adding names (Thanks, Delan, luv u!).
var addName = pp => {
    if (pp.name !== "Anonymous") {
        if (!dataBase[pp._id]) {
            dataBase[pp._id] = [pp.name];
            dataBase.totalnames += 1;
        } else {
            if (!dataBase[pp._id].includes(pp.name)) {
                dataBase[pp._id].push(pp.name);
            }
        }
    }
};

//When someone joins the room, this records their name.
MPP.client.on("participant added", addName);
//When someone leaves the room, this records their name.
MPP.client.on("participant removed", addName);
//When someone changes their name, this records it.
MPP.client.on("participant update", addName);

//Save DataBase
MPP.client.on('a', m => {
	if (m.a == '!dbsave') {
		if (m.p._id == MPP.client.getOwnParticipant()._id) {
			localStorage.dataBase = JSON.stringify(dataBase);
			MPP.chat.send("Database saved to localStorage. Names for " + dataBase.totalnames + " unique _ids are currently stored.");
		}
	}
});