Initial Paprika Next.js implementation

app/api/submissions/route.ts

@@ -0,0 +1,33 @@
+import { NextResponse } from "next/server";
+import { ZodError } from "zod";
+import { createSubmission } from "@/lib/submissions";
+import { submissionSchema } from "@/lib/submission-schema";
+
+export async function POST(request: Request) {
+  try {
+    const payload = await request.json();
+    const input = submissionSchema.parse(payload);
+    const submission = await createSubmission(input);
+
+    return NextResponse.json({
+      submission_id: submission.id,
+      created_at: submission.createdAt.toISOString()
+    });
+  } catch (error) {
+    if (error instanceof ZodError) {
+      return NextResponse.json(
+        {
+          error: "Validation failed",
+          issues: error.flatten().fieldErrors
+        },
+        { status: 400 }
+      );
+    }
+
+    console.error("Submission failed", error);
+    return NextResponse.json(
+      { error: "Submission could not be saved. Please try again." },
+      { status: 500 }
+    );
+  }
+}