FarsiCorrection

FarsiCorrection.js

function onOpen() {
  DocumentApp.getUi()
    .createMenu("Persian Keyboard")
    .addItem("Convert Selection", "convertSelection")
    .addToUi();
}

function convertSelection() {
  const map = {
    'q':'ض','w':'ص','e':'ث','r':'ق','t':'ف','y':'غ','u':'ع','i':'ه','o':'خ','p':'ح',
    '[':'ج',']':'چ',
    'a':'ش','s':'س','d':'ی','f':'ب','g':'ل','h':'ا','j':'ت','k':'ن','l':'م',
    ';':'ک',"'":'گ',
    'z':'ظ','x':'ط','c':'ز','v':'ر','b':'ذ','n':'د','m':'پ',
    ',':'و','.':'.','/':'/',

    'Q':'َ','W':'ً','E':'ُ','R':'ٌ','T':'ُ','Y':'ِ','U':'َ','I':'ّ','O':']','P':'[',
    '{':'}','}':'{',
    'A':'ؤ','S':'ئ','D':'ي','F':'إ','G':'أ','H':'آ','J':'ة','K':'»','L':'«',
    ':':':','"':'"',
    'Z':'ك','X':'ٓ','C':'ژ','V':'ٰ','B':'‌','N':'ٔ','M':'ء',
    '<':'>','>':'<','?':'؟'
  };

  const selection = DocumentApp.getActiveDocument().getSelection();

  if (!selection) {
    DocumentApp.getUi().alert("Select some text first.");
    return;
  }

  const elements = selection.getRangeElements();

  elements.forEach(el => {
    const element = el.getElement();
    if (element.editAsText === undefined) return;

    const text = element.asText();
    const start = el.isPartial() ? el.getStartOffset() : 0;
    const end = el.isPartial() ? el.getEndOffsetInclusive() : text.getText().length - 1;

    if (start < 0 || end < 0) return;

    const selected = text.getText().substring(start, end + 1);

    const converted = [...selected]
      .map(ch => map[ch] ?? ch)
      .join("");

    text.deleteText(start, end);
    text.insertText(start, converted);
  });
}