Photoshop Script to Set Italic Font Style?

hi, so i've been trying to make a script that changes the text style based on it's contents (Whether if there's quote text or not) and making it into Bold Italic, regardless of what font I'm using, so I managed to make it change the text to faux italics, but when I try to make it to change the actual font style to the Italics version of the current font, it just doesnt work and I dunno what to do.

This is the main idea, get the text on quotes ("" or '') and change the text style of that to bold italic, or italic.
I was also trying to make it change the color of the text, so if the text layer is not black and has some color in it, change the quote text style and color to red, but I feel I wanna fix the main issue first.
I hope someone can help me out and thanks beforehand.

This is my current code

// Set Quote text in Bold Italic style
#target photoshop

function getAllTextLayers(parent) {
var layers = [];
for (var i = 0; i < parent.layers.length; i++) {
var layer = parent.layers[i];
if (layer.typename === "ArtLayer" && layer.kind === LayerKind.TEXT) {
layers.push(layer);
} else if (layer.typename === "LayerSet") {
layers = layers.concat(getAllTextLayers(layer));
}
}
return layers;
}

function changeQuotedTextToItalic(textLayer) {
var text = textLayer.textItem.contents;
var quoteRegex = /"([^"]*)"/g;
var matches = [];
var match;

while ((match = quoteRegex.exec(text)) !== null) {
matches.push({
start: match.index + 1,
end: match.index + match[0].length - 1
});
}
if (matches.length === 0) return;

// Get ActionDescriptor for the active text layer
var ref = new ActionReference();
ref.putEnumerated(charIDToTypeID("TxLr"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt"));
var layerDesc = executeActionGet(ref);
var textDesc = layerDesc.getObjectValue(stringIDToTypeID("textKey"));
var styleRanges = textDesc.getList(stringIDToTypeID("textStyleRange"));

// Apply italic to matched ranges
for (var m = 0; m < matches.length; m++) {
var start = matches[m].start;
var end = matches[m].end;

// Find a style range that covers this range
for (var i = 0; i < styleRanges.count; i++) {
var rangeDesc = styleRanges.getObjectValue(i);
var rStart = rangeDesc.getInteger(stringIDToTypeID("from"));
var rEnd = rangeDesc.getInteger(stringIDToTypeID("to"));

if (start >= rStart && end <= rEnd) {
// Clone the existing style descriptor
var styleDesc = rangeDesc.getObjectValue(stringIDToTypeID("textStyle"));

// Add faux italic
styleDesc.putBoolean(stringIDToTypeID("syntheticItalic"), true);

// Create new range descriptor
var newRange = new ActionDescriptor();
newRange.putInteger(stringIDToTypeID("from"), start);
newRange.putInteger(stringIDToTypeID("to"), end);
newRange.putObject(stringIDToTypeID("textStyle"), stringIDToTypeID("textStyle"), styleDesc);

styleRanges.putObject(stringIDToTypeID("textStyleRange"), newRange);
break;
}
}
}

// Put modified style ranges back
textDesc.putList(stringIDToTypeID("textStyleRange"), styleRanges);

// Apply changes
var setRef = new ActionReference();
setRef.putEnumerated(charIDToTypeID("TxLr"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt"));
var setDesc = new ActionDescriptor();
setDesc.putReference(charIDToTypeID("null"), setRef);
setDesc.putObject(charIDToTypeID("T "), charIDToTypeID("TxLr"), textDesc);
executeAction(charIDToTypeID("setd"), setDesc, DialogModes.NO);
}

// Main loop
if (app.documents.length > 0) {
var doc = app.activeDocument;
var textLayers = getAllTextLayers(doc);

for (var i = 0; i < textLayers.length; i++) {
doc.activeLayer = textLayers[i];
changeQuotedTextToItalic(textLayers[i]);
}

alert("Italic applied to all quoted text.");
}