Unique Stack Name - Prefill

var Naming1 = Class.create();
Naming1.prototype = Object.extendsObject(sn_cmp.PolicyExecutionBase, {
    customScript : function(formData){
        // Manipulation of form parameters are supported. Changes in any other attributes
        // will be ignored.
        // The data available for manipulation is as follows:
        // Form Data -  for example: StackName can be accessed through formData.StackName
        // formData.StackName = "MyStack";
        // User Data  - for example: User Id can be accessed through this.parameters.userData
        // if(this.parameter.userData.userId == 'servicenowuserId')
        //this.info("id = " + formData.StackName);

        // Set debugging information to be sent to gs.info with searchable prefix
        var thisDebug = true;
        var thisDebugPrefix = "ZZZZZ - ";

        // Get the current logged-in Username and split it into an array
        var nConvention1 = this.parameters.userData.userName;
        var nConvention2 = nConvention1.split(/[^A-Za-z]/);
        var nPrefix = "";

        // Get current time and date and put Month, Day, Hour, and Minute into a string
        var currentTime = new Date();
        var nConvention3 = ('0' + (currentTime.getMonth() + 1)).slice(-2) +
                         ('0' + currentTime.getDate()).slice(-2) +
                         ('0' + currentTime.getHours()).slice(-2) +
                         ('0' + currentTime.getMinutes()).slice(-2);
        var t = ""; // Declared here for timestamp calculations later on ...

        // Make sure the prefix has two characters
        if (nConvention2.length < 2) {
            // If current user does not have two initials, come up with a different 2 letters
            if (nConvention1 == "admin") {
                nPrefix = "sa";
            } else {
                nPrefix = nConvention1.charAt(0) + nConvention1.charAt(1);
            }
        } else {
            nPrefix = nConvention2[0].charAt(0) + nConvention2[1].charAt(0);
        }

        // Assemble the first candidate ...
        formData.StackName = "" + nPrefix + nConvention3;
        // Log the current name if thisDebug = true
        if (thisDebug) { gs.info("" + thisDebugPrefix + formData.StackName); }

        // Check the name against existing stack names
        var nameCount = new GlideRecord('sn_cmp_stack');
        nameCount.addQuery('name',formData.StackName);
        nameCount.query();
        if (thisDebug) { gs.info("" + thisDebugPrefix + "existing stacks with this name: " + nameCount.getRowCount()); }

        while (nameCount.getRowCount() > 0) {
            // If execution ends up here, increment the timestamp by 1 until we find something unique
            t = "00000000" + (++nConvention3);
            nConvention3 = t.substr(t.length - 8);
            formData.StackName = "" + nPrefix + nConvention3;
            if (thisDebug) { gs.info("" + thisDebugPrefix + formData.StackName); }

            nameCount.addQuery('name',formData.StackName);
            nameCount.query();
            if (thisDebug) { gs.info("" + thisDebugPrefix + "existing stacks with this name: " + nameCount.getRowCount()); }
        }

        // Additional places we want to use the name can go here
        if (formData.hasOwnProperty("ConfigurationName")) {
            formData.ConfigurationName = formData.StackName;
        }

        return formData;
    },
    execute: function() {
        if(this.parameters !=  null && this.parameters.formData != null){
            var inputData = JSON.parse(JSON.stringify(this.parameters.formData));
            var outputFormData = this.customScript(inputData);
            if( outputFormData != null){
                this.parameters.formData = outputFormData;
            }
        }
        var output = {};
        output.answer = this.parameters;
        return JSON.stringify(output);
    },
    type : 'Naming1'
});

var Naming1Obj = new Naming1(inputAttributes);
var outputParams = Naming1Obj.execute();
gs.info( "Output of script is = " + outputParams);