auto-save 2026-05-19 10:35 (+3, ~8, -1)

src/app/api/character/lock-from-upload/route.ts

@@ -0,0 +1,52 @@
+import { NextResponse } from 'next/server';
+import { buildCharacterSpec, cleanupCharacterAnchor } from '@/lib/packGenerator';
+import { detectProvider } from '@/lib/providers';
+import { loadSession, saveSession } from '@/lib/storage';
+import type { LockCharacterFromUploadRequest, LockCharacterResponse } from '@/lib/types';
+
+export const runtime = 'nodejs';
+export const dynamic = 'force-dynamic';
+
+export async function POST(req: Request) {
+  const { sessionId, subjectImageId, userHint, force = false } = (await req.json()) as LockCharacterFromUploadRequest;
+
+  if (!sessionId || !subjectImageId) {
+    return NextResponse.json({ error: 'sessionId and subjectImageId required' }, { status: 400 });
+  }
+
+  const session = await loadSession(sessionId);
+  if (!session) return NextResponse.json({ error: 'session not found' }, { status: 404 });
+
+  const sourceImage = session.images.find(image =>
+    image.id === subjectImageId || image.meta?.uploadedImageId === subjectImageId
+  );
+  if (!sourceImage) return NextResponse.json({ error: 'subject image not found' }, { status: 404 });
+
+  if (!force && session.characterSpec?.sourceImageId === sourceImage.id && session.characterSpec.cleanReferenceImageUrl) {
+    return NextResponse.json({
+      characterSpec: session.characterSpec,
+      provider: detectProvider(),
+    } satisfies LockCharacterResponse);
+  }
+
+  try {
+    if (userHint?.trim()) session.prompt = userHint.trim();
+    const characterSpec = await buildCharacterSpec(session, sourceImage);
+    const cleaned = await cleanupCharacterAnchor({
+      session,
+      sourceImage,
+      characterSpec,
+      force: true,
+      preserveLevel: 'strict',
+    });
+    session.characterSpec = cleaned.characterSpec;
+    await saveSession(session);
+
+    return NextResponse.json({
+      characterSpec: cleaned.characterSpec,
+      provider: cleaned.provider,
+    } satisfies LockCharacterResponse);
+  } catch (error) {
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}