Teacher help!

function onOpen() {
  SlidesApp.getUi().createMenu('Highlight Tool')
    .addItem('Highlight Sentences Missing Period', 'highlightSentencesMissingPeriod')
    .addToUi();
}

function highlightSentencesMissingPeriod() {
  const slideDeck = SlidesApp.getActivePresentation();
  const slides = slideDeck.getSlides();

  // Loop through each slide in the presentation
  slides.forEach(function(slide) {
    // Get all text elements (text boxes) on the slide
    const textElements = slide.getPageElements().filter(function(element) {
      return element.getPageElementType() === SlidesApp.PageElementType.TEXT_BOX;
    });

    // Loop through each text box on the slide
    textElements.forEach(function(textBox) {
      const textRange = textBox.asTextBox().getText();
      const text = textRange.getText().trim();  // Extract the entire text

      // Check if the text ends with a period
      if (text && !text.endsWith('.')) {
        // Apply pink highlight to the entire text box if missing period
        textRange.getTextStyle().setBackgroundColor("#FF69B4");  // Pink color
      }
    });
  });
}

I can't get it to work.  Help!

Also, isn’t the pageElementType SHAPE rather than TEXT_BOX

Would each text box have more than one sentence in it? If it was a single sentence per text box then it would be a simple process to search whether the text box contains a full stop.

If each text box is a paragraph of writing then you would need to use something like a LLM (Gemini, GPT etc) to analyse the text and determine if periods are used correctly.  This can be done easily enough but may be beyond the prowess of Chat GPT to write you a demo.  Easiest way I can think of, you would need to get an API key from aistudio.google.com and use the GeminiApp written by mhawksey and you would use the text from each text box as a prompt.  The only problem with this might be that I don't think GeminiApp supports JSON responses yet.  Ideally you would need Gemini to respond with a single response (Yes/No), (true/false) etc so that you can highlight the text box accordingly.

I could probably make a quick demonstration but I'd need further information from you about your use case and what the benefits would be first.

The idea would be that kids would see a highlighted sentence, and then they would have to add a period.  This would be part of our editing process.

Thank you!