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Chatgpt-RTL.user.js

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+// ==UserScript==
+// @name         ChatGPT RTL
+// @namespace    http://chat.openai.com
+// @author       Alireza Farzaneh
+// @version      0.1.0
+// @description  Changes the direction of Persian text on ChatGPT interface to RTL
+// @match        https://chat.openai.com/*
+// @grant        none
+// ==/UserScript==
+
+(function() {
+    'use strict';
+    const PERSIAN_REGEX = /[\u0600-\u06FF\uFB8A\u067E\u0686\u06AF\u200C\u200F]+/;
+
+    // Function to check if a given string contains Persian text
+    function containsPersianText(text) {
+        return PERSIAN_REGEX.test(text);
+    }
+
+    // Function to modify a single text node
+    function changeTextElementDirection(element) {
+        element.parentNode.setAttribute('dir', 'rtl');
+    }
+
+    // Function to recursively search and modify elements containing Persian text
+    function modifyPersianTextElements(element) {
+        var childNodes = element.childNodes;
+        for (var i = 0; i < childNodes.length; i++) {
+            var childNode = childNodes[i];
+            if (childNode.nodeType === Node.TEXT_NODE && containsPersianText(childNode.textContent)) {
+                changeTextElementDirection(childNode);
+            } else if (childNode.nodeType === Node.ELEMENT_NODE) {
+                modifyPersianTextElements(childNode);
+            }
+        }
+    }
+
+    // Function to handle mutation events
+    function handleMutations(mutationsList) {
+        for (var i = 0; i < mutationsList.length; i++) {
+            var mutation = mutationsList[i];
+            if (mutation.type === 'childList') {
+                var addedNodes = mutation.addedNodes;
+                for (var j = 0; j < addedNodes.length; j++) {
+                    var addedNode = addedNodes[j];
+                    if (addedNode.nodeType === Node.ELEMENT_NODE) {
+                        modifyPersianTextElements(addedNode);
+                    }
+                }
+            }
+        }
+    }
+
+    // Modify elements containing Persian text
+    modifyPersianTextElements(document.body);
+
+    // Watch for DOM mutations and apply RTL direction to newly added Persian text
+    var observer = new MutationObserver(handleMutations);
+    observer.observe(document.body, { childList: true, subtree: true });
+})();