fix: share clipboard write for Safari transient activation

- Use ClipboardItem with Promise to preserve user gesture context
- Fall back to showing share URL in toast if clipboard is unavailable
- Derive app origin from request URL when NEXT_PUBLIC_APP_URL is unset
- Add onError handlers to share/unshare mutations

1 files changed, 6 insertions, 11 deletions

diff --git a/apps/web/app/api/share/route.ts b/apps/web/app/api/share/route.ts
index e1252bf..b6a9c88 100644
--- a/apps/web/app/api/share/route.ts
+++ b/apps/web/app/api/share/route.ts
@@ -4,10 +4,11 @@ import { createSupabaseServerClient } from "@/lib/supabase/server"
 
 const MAX_NOTE_LENGTH = 1000
 
-function getAppOrigin(): string | null {
-  const url = process.env.NEXT_PUBLIC_APP_URL
-  if (!url) return null
-  return url.replace(/\/$/, "")
+function getAppOrigin(request: Request): string {
+  const envUrl = process.env.NEXT_PUBLIC_APP_URL
+  if (envUrl) return envUrl.replace(/\/$/, "")
+  const requestUrl = new URL(request.url)
+  return requestUrl.origin
 }
 
 export async function POST(request: Request) {
@@ -90,13 +91,7 @@ export async function POST(request: Request) {
     )
   }
 
-  const origin = getAppOrigin()
-  if (!origin) {
-    return NextResponse.json(
-      { error: "application URL is not configured" },
-      { status: 500 }
-    )
-  }
+  const origin = getAppOrigin(request)
 
   const { data: existingShare } = await supabaseClient
     .from("shared_entries")