Face Changing API Script for Roll20

Faces.js

/*
 * A Simple face changing script.
 * Make a rollable table with the character name (one word characer name) plus -Faces
 * Example, character named John Smith
 * Table name is John-Faces
 * Fill table with face names, and pictures which you have uploaded. Can't be from purchase or search
 * Must be uploaded to your library.
 * Make macro with this body, as token action macro:
 * !FaceChange John-?{Face|Normal|Soldier|Popper|Pirate|Noble|Elder|Cleric}
 * Where those options (other than the title "Face") are the names of the items in your rollable table.
*/

on("ready", function() {
    
    var getCleanImgsrc = function (imgsrc) {
       var parts = imgsrc.match(/(.*\/images\/.*)(thumb|med|original|max)([^\?]*)(\?[^?]+)?$/);
       if(parts) {
          return parts[1]+'thumb'+parts[3]+(parts[4]?parts[4]:`?${Math.round(Math.random()*9999999)}`);
       }
       return;
    };
    
    on("chat:message", function (msg) {
        
        if (msg.type === "api" && msg.content.split(' ')[0] === "!FaceChange")  {
            FaceGet(msg);
        }
    });
    
    function FaceGet(msg)
    {
        var args = msg.content.split(' ');
        var charName = args[1].split('-')[0];
        var charFaceName = args[1].split('-')[1];

        var faceTableName = charName + "-Faces";

        var faceTable = findObjs({type: 'rollabletable', name: faceTableName})[0];
        var faceItem = findObjs({type: 'tableitem', _rollabletableid: faceTable.id, name: charFaceName})[0];
        
        _.each(msg.selected,function (o) {
            getObj(o._type,o._id).set({
                imgsrc: getCleanImgsrc(faceItem.get('avatar'))
            });
        });
    }

});