import type { NextApiRequest, NextApiResponse } from "next";
import { DocumentValidationError, saveDocumentBatch } from "@/lib/docs";
import { authorizeDocuments, documentApiError, idempotency, parseDocument } from "@/lib/documents-api";

export const config = { api: { bodyParser: { sizeLimit: "8mb" } } };
export default function handler(request: NextApiRequest, response: NextApiResponse) {
  try {
    const key = authorizeDocuments(request, response, true);
    if (!key) return;
    if (request.method !== "POST") {
      response.setHeader("Allow", "POST");
      return response.status(405).end();
    }
    const body = request.body;
    if (!body || typeof body !== "object" || Array.isArray(body) ||
        Object.keys(body).length !== 1 || !Array.isArray(body.documents) ||
        !body.documents.length || body.documents.length > 100)
      throw new DocumentValidationError("Expected { documents: [...] } with 1 to 100 documents");
    const documents = body.documents.map((row: unknown) => parseDocument(row));
    return response.status(200).json(saveDocumentBatch(documents, idempotency(request, key.id)));
  } catch (error) { return documentApiError(response, error); }
}