Automated Removal of Unused Swatches in Book File and Documents

Check this code:

var myFileLocation = Folder.selectDialog("Please select path to files"); // file path selection
var myFolder = new Folder(myFileLocation);
var myFolderContents = myFolder.getFiles("*.indb"); // array
var myFileAmount = myFolderContents.length;
 
// Check if any .indb files were found
if (myFileAmount === 0) {
    alert("No INDB files found in the selected folder.");
} else {
    // Loop through the INDB files
    for (var i = 0; i < myFileAmount; i++) {
        var inFile = myFolderContents[i];
         app.scriptPreferences.userInteractionLevel = UserInteractionLevels.NEVER_INTERACT;
        // Open the INDB file
        var doc = app.open(inFile);
        app.scriptPreferences.userInteractionLevel = UserInteractionLevels.INTERACT_WITH_ALL;
        // Access the book contents
        var bookContents = doc.bookContents;
        
          // Loop through the book contents (individual documents in the book)
        for (var j = 0; j < bookContents.length; j++) {
            var bookItem = bookContents[j];
            
           var tempDoc = app.open(bookContents[j].fullName);
           
            var myDocument = app.activeDocument;
            
            var id, sw;
 
    while (myDocument.unusedSwatches[0].name != "") {
 
            id = myDocument.unusedSwatches[0].id;
 
            sw = myDocument.swatches.itemByID(id);
 
            sw.remove();
 
 }   
}
}
}
 
var documents = app.documents;
for (var i = documents.length - 1; i >= 0; i--) {
    documents[i].close(SaveOptions.YES);
}
    app.activeBook.close(SaveOptions.YES);
    alert("Done");