refactor(link): simplify LinkEditForm state management and improve slug handling

- Removed unnecessary useEffect for slug initialization and replaced it with a more efficient state setup.
- Updated handleSubmit to conditionally include the slug in the payload based on link creation or modification.
- Enhanced form handling by utilizing watch for dynamic slug updates and improved validation messages for slug input.

src/app/(main)/links/LinkEditForm.tsx

@@ -10,7 +10,7 @@ import {
   Row,
   TextField,
 } from '@umami/react-zen';
-import { useEffect, useState } from 'react';
+import { useState } from 'react';
 import { useConfig, useLinkQuery, useMessages } from '@/components/hooks';
 import { useUpdateQuery } from '@/components/hooks/queries/useUpdateQuery';
 import { ChevronDown, ChevronRight, RefreshCw } from '@/components/icons';
@@ -42,11 +42,15 @@ export function LinkEditForm({
   const { linksUrl } = useConfig();
   const hostUrl = linksUrl || LINKS_URL;
   const { data, isLoading } = useLinkQuery(linkId);
-  const [slug, setSlug] = useState(generateId());
+  const [initialSlug] = useState(() => generateId());
   const [showAdvanced, setShowAdvanced] = useState(false);
 
-  const handleSubmit = async (data: any) => {
-    await mutateAsync(data, {
+  const handleSubmit = async (formData: any) => {
+    const { slug: formSlug, ...rest } = formData;
+    // Only include slug if creating new link or if it was modified
+    const payload = !linkId || formSlug !== data?.slug ? formData : rest;
+
+    await mutateAsync(payload, {
       onSuccess: async () => {
         toast(formatMessage(messages.saved));
         touch('links');
@@ -56,13 +60,7 @@ export function LinkEditForm({
     });
   };
 
-  const handleSlug = () => {
-    const slug = generateId();
-
-    setSlug(slug);
-
-    return slug;
-  };
+  const handleSlug = () => generateId();
 
   const checkUrl = (url: string) => {
     if (!isValidUrl(url)) {
@@ -71,12 +69,6 @@ export function LinkEditForm({
     return true;
   };
 
-  useEffect(() => {
-    if (data) {
-      setSlug(data.slug);
-    }
-  }, [data]);
-
   if (linkId && isLoading) {
     return <Loading placement="absolute" />;
   }
@@ -85,15 +77,27 @@ export function LinkEditForm({
     <Form
       onSubmit={handleSubmit}
       error={getErrorMessage(error)}
-      defaultValues={{
-        slug,
+      {...(linkId
+        ? {
+            values: {
               ...data,
               ogTitle: data?.ogTitle || '',
               ogDescription: data?.ogDescription || '',
               ogImageUrl: data?.ogImageUrl || '',
-      }}
+            },
+          }
+        : {
+            defaultValues: {
+              slug: initialSlug,
+              ogTitle: '',
+              ogDescription: '',
+              ogImageUrl: '',
+            },
+          })}
     >
-      {({ setValue }) => {
+      {({ setValue, watch }) => {
+        const currentSlug = watch('slug') ?? initialSlug;
+
         return (
           <>
             <FormField
@@ -116,7 +120,7 @@ export function LinkEditForm({
               <Label>{formatMessage(labels.link)}</Label>
               <Row alignItems="center" gap>
                 <TextField
-                  value={`${hostUrl}/${slug}`}
+                  value={`${hostUrl}/${currentSlug}`}
                   autoComplete="off"
                   isReadOnly
                   allowCopy
@@ -157,17 +161,17 @@ export function LinkEditForm({
                   <TextField autoComplete="off" />
                 </FormField>
 
-                <Column>
-                  <Label>{formatMessage(labels.path)}</Label>
-                  <TextField
-                    value={slug}
-                    onChange={(value: string) => {
-                      setSlug(value);
-                      setValue('slug', value, { shouldDirty: true });
+                <FormField
+                  label={formatMessage(labels.path)}
+                  name="slug"
+                  rules={{
+                    required: formatMessage(labels.required),
+                    minLength: { value: 4, message: formatMessage(labels.tooShort) },
+                    maxLength: { value: 100, message: formatMessage(labels.tooLong) },
                   }}
-                    autoComplete="off"
-                  />
-                </Column>
+                >
+                  <TextField autoComplete="off" minLength={4} maxLength={100} />
+                </FormField>
               </Column>
             )}
 

src/components/messages.ts

@@ -4,6 +4,8 @@ export const labels = defineMessages({
   ok: { id: 'label.ok', defaultMessage: 'OK' },
   unknown: { id: 'label.unknown', defaultMessage: 'Unknown' },
   required: { id: 'label.required', defaultMessage: 'Required' },
+  tooShort: { id: 'label.too-short', defaultMessage: 'Too short' },
+  tooLong: { id: 'label.too-long', defaultMessage: 'Too long' },
   save: { id: 'label.save', defaultMessage: 'Save' },
   cancel: { id: 'label.cancel', defaultMessage: 'Cancel' },
   continue: { id: 'label.continue', defaultMessage: 'Continue' },