Protect row when drop down menu changes to "Locked" using app scripts - google-apps-script

Question

I am trying to simply protect an entire row (add editors) when someone changes the drop-down menu to "Locked", even the drop-down menu should be protected that is on the same row. This is something that I want to implement in almost all rows of the sheet.
I have found multiple resources that help but I can't combine it properly, would be very thankful for any help!
Bellow are some helpful links I found.
Google sheets: protect cells conditionally?
Protecting Cells Based on Contents of Other Cells in Google Sheets
Protect ranges with google apps script

Answer 1

Add this code to your spreadsheet's script editor and set an onEdit trigger for the below mentioned function.
Replace the email#gmail.com string in code with your actual email
NOTE : This script assumes that first row of the sheet may have three option depending on which the protection of that range is controlled.
Lock : locks that particular column
Unlock : unlocks that particular column
blank : does nothing
function onEdit(e){
var x = [e.range.columnStart,e.range.rowStart,e.range.columnEnd,e.range.rowEnd]
if (x[0]==x[2] && x[1]==1 && x[3]==1){
var lockRangeStart = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet().getRange(1,x[0]).getA1Notation();
var lastCol = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet().getLastRow();
var lockRangeName = (lockRangeStart+":"+lockRangeStart.match(/(\D*)/)[1]+lastCol);
var lockRange = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet().getRange(lockRangeName);
if(e.value == "Lock"){
var protection = lockRange.protect().setDescription('Locked Range');
protection.addEditor("email#gmail.com");
protection.removeEditors(protection.getEditors());
if (protection.canDomainEdit()) {
protection.setDomainEdit(false);
}
}
else if(e.value == "Unlock") {
var ss = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
var protections = ss.getProtections(SpreadsheetApp.ProtectionType.RANGE);
for (var i = 0; i < protections.length; i++) {
var protection = protections[i];
if (protection.canEdit() && protection.getRange().getA1Notation() == lockRangeName ) {
protection.remove();
}
}
}
}
}