feat(ai): localize AI features

keep-notes/app/actions/user-settings.ts

@@ -2,7 +2,7 @@
 
 import { auth } from '@/auth'
 import { prisma } from '@/lib/prisma'
-import { revalidatePath } from 'next/cache'
+import { revalidatePath, revalidateTag } from 'next/cache'
 
 export type UserSettingsData = {
   theme?: 'light' | 'dark' | 'auto' | 'sepia' | 'midnight' | 'blue'
@@ -12,7 +12,7 @@ export type UserSettingsData = {
  * Update user settings (theme, etc.)
  */
 export async function updateUserSettings(settings: UserSettingsData) {
-  console.log('[updateUserSettings] Started with:', settings)
+
   const session = await auth()
 
   if (!session?.user?.id) {
@@ -25,9 +25,10 @@ export async function updateUserSettings(settings: UserSettingsData) {
       where: { id: session.user.id },
       data: settings
     })
-    console.log('[updateUserSettings] Success:', result)
+
 
     revalidatePath('/', 'layout')
+    revalidateTag('user-settings')
 
     return { success: true }
   } catch (error) {
@@ -37,8 +38,33 @@ export async function updateUserSettings(settings: UserSettingsData) {
 }
 
 /**
- * Get user settings for current user
+ * Get user settings for current user (Cached)
  */
+import { unstable_cache } from 'next/cache'
+
+// Internal cached function
+const getCachedUserSettings = unstable_cache(
+  async (userId: string) => {
+    try {
+      const user = await prisma.user.findUnique({
+        where: { id: userId },
+        select: { theme: true }
+      })
+
+      return {
+        theme: (user?.theme || 'light') as 'light' | 'dark' | 'auto' | 'sepia' | 'midnight' | 'blue'
+      }
+    } catch (error) {
+      console.error('Error getting user settings:', error)
+      return {
+        theme: 'light' as const
+      }
+    }
+  },
+  ['user-settings'],
+  { tags: ['user-settings'] }
+)
+
 export async function getUserSettings(userId?: string) {
   let id = userId
 
@@ -53,19 +79,5 @@ export async function getUserSettings(userId?: string) {
     }
   }
 
-  try {
-    const user = await prisma.user.findUnique({
-      where: { id },
-      select: { theme: true }
-    })
-
-    return {
-      theme: (user?.theme || 'light') as 'light' | 'dark' | 'auto' | 'sepia' | 'midnight' | 'blue'
-    }
-  } catch (error) {
-    console.error('Error getting user settings:', error)
-    return {
-      theme: 'light' as const
-    }
-  }
+  return getCachedUserSettings(id)
 }