continue scaffolding and refine the basic foundation

server/api/chat/generate.post.ts

@@ -1,12 +1,12 @@
 import { protectRoute } from '~~/server/utils/auth';
-import { registerPendingGeneration } from '~~/server/utils/generation';
+import { createPendingGeneration } from '~~/server/utils/generation';
 import type { GenerateRequestBody } from '~~/server/types/chat';
 
 export default defineEventHandler(async (event) => {
     await protectRoute(event);
 
     const body = await readBody(event) as GenerateRequestBody;
-    const { topicId, messages } = body;
+    const { topicId, messages, regeneratesFrom } = body;
 
     if (!topicId || !messages) {
         throw createError({
@@ -22,12 +22,19 @@ export default defineEventHandler(async (event) => {
         });
     }
 
-    const generationId = `gen_${Date.now()}_${Math.random().toString(36).substring(2, 9)}`;
+    try {
+        const generationId = await createPendingGeneration(event.context.user.id, topicId, messages, regeneratesFrom);
 
-    registerPendingGeneration(event.context.user.id, generationId, topicId, messages);
-
-    return {
-        generationId,
-        status: 'pending'
-    };
+        return {
+            generationId,
+            status: 'pending',
+            regeneratesFrom
+        };
+    } catch (error) {
+        console.error('Failed to create generation:', error);
+        throw createError({
+            statusCode: 500,
+            statusMessage: 'Failed to create generation'
+        });
+    }
 });