client: add / auto-increment number at end of copied posts instead of 'copy of' text

client/components/new-post/index.tsx

@@ -23,6 +23,7 @@ import getPostPath from "@lib/get-post-path"
 import EditDocumentList from "@components/edit-document-list"
 import { ChangeEvent } from "react"
 import DatePicker from "react-datepicker"
+import getTitleForPostCopy from "@lib/get-title-for-post-copy"
 
 const Post = ({
 	initialPost,
@@ -52,7 +53,6 @@ const Post = ({
 	// the /new/from/{id} route fetches an initial post
 	useEffect(() => {
 		if (initialPost) {
-			setTitle(`Copy of ${initialPost.title}`)
 			setDocs(
 				initialPost.files?.map((doc) => ({
 					title: doc.title,
@@ -60,9 +60,12 @@ const Post = ({
 					id: doc.id
 				})) || emptyDoc
 			)
+
+			setTitle(getTitleForPostCopy(initialPost.title))
 		}
 	}, [emptyDoc, initialPost])
 
+
 	const [passwordModalVisible, setPasswordModalVisible] = useState(false)
 
 	const sendRequest = useCallback(

client/lib/get-title-for-post-copy.ts

@@ -0,0 +1,29 @@
+const replaceLastInString = (
+    string: string,
+    search: string,
+    replace: string
+): string => {
+    const index = string.lastIndexOf(search);
+    if (index === -1) {
+        return string;
+    }
+    return string.substring(0, index) + replace + string.substring(index + search.length);
+}
+
+const getTitleForPostCopy = (
+    title: string,
+) => {
+    const numberAtEndOfTitle = title.split(" ").pop()
+    if (numberAtEndOfTitle) {
+        const number = parseInt(numberAtEndOfTitle)
+        if (number) {
+            return replaceLastInString(title, numberAtEndOfTitle, (number + 1).toString())
+        } else {
+            return title + " 1"
+        }
+    } else {
+        return title + " 1"
+    }
+}
+
+export default getTitleForPostCopy