How to trigger Google Apps script when user makes a copy

Question

I want to clear some range content from a sheet when someone creates a copy of that g-sheet.

How can I make the "create a copy" menu item, trigger a script?

Answer 1

I disabled the "make a copy" menu item and allow it only by a script.

function makeACopy() {
  clearRange("A1:A100");
  var documentId = DriveApp.getFileById('FileId').makeCopy().getId();
  DriveApp.getFileById(documentId).setName('PT generator' + new Date() );
};

function clearRange(rangeToClear) {
    const sheet = SpreadsheetApp.getActive().getSheetByName('Sheet1');
    const formulas = sheet.getRange(rangeToClear).getFormulas();

    sheet.getRange(rangeToClear).clear({
        contentsOnly: true,
        skipFilteredRows: false
    });
    sheet.getRange(rangeToClear).setFormulas(formulas)
};