// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
import type { NextApiRequest, NextApiResponse } from "next";
import NextCors from "nextjs-cors";
import { getDatabaseId, notion } from "../../lib/notion";
import { DatabaseType, Error, Topic } from "../../types";

function getTopicsInDatabase(notionResp: any): Topic[] {
  return notionResp.results.map((block: any) => ({
    blockId: block.id,
    name: block.properties.Name?.title?.[0]?.plain_text ?? "Untitled",
  }));
}

export default async function handler(
  req: NextApiRequest,
  res: NextApiResponse<Topic[] | Error>
) {
  await NextCors(req, res, {
    methods: ["GET", "HEAD", "PUT", "PATCH", "POST", "DELETE"],
    origin: "*",
    optionsSuccessStatus: 200,
  });

  const {
    query: { type, category },
  } = req;
  const blockId = getDatabaseId(type as DatabaseType);
  if (!blockId) {
    res.status(404).json({ status: "Not found." });
  } else {
    const categoryFilter = category
      ? {
          filter: {
            property: "Category",
            select: {
              equals: category,
            },
          },
        }
      : {};
    const resp = await notion.databases.query({
      database_id: blockId,
      sorts: [
        {
          property: "Created",
          direction: "ascending",
        },
      ],
      ...categoryFilter,
    });
    console.log(resp);
    res.status(200).json(getTopicsInDatabase(resp));
  }
}