Notion API with Deno Deploy

server.ts

import { serve } from "https://deno.land/std@0.156.0/http/server.ts"; // from Deno

interface Link {
  id: number;
  label: string;
  url: string;
  target: string;
}

const NOTION_DATABASE_ID = Deno.env.get("NOTION_DATABASE_ID")
const NOTION_TOKEN = Deno.env.get("NOTION_TOKEN")


const headers = new Headers({
  'Content-Type': 'application/json; charset=utf-8',
})

serve(async (req) => {    

  headers.set('Access-Control-Allow-Origin', '*');
  headers.set('Access-Control-Allow-Headers', '*');
  headers.set('Access-Control-Allow-Methods', 'GET');

  let LINKS: Link[] = [];
  
  if(req.url.endsWith("api/linkbio") && req.method == "GET") {

    const API_URL = `https://api.notion.com/v1/databases/${NOTION_DATABASE_ID}/query`;
    const TOKEN = `Bearer ${NOTION_TOKEN}`;
    
    try {
      LINKS = await fetch(API_URL, {
        method: 'POST',
        headers: {
          'Authorization': TOKEN,
          'Notion-Version': '2022-06-28',
          'Content-Type': 'application/json'
        },
        body: JSON.stringify(
          {
            "filter": {
                "property": "type",
                "select": {
                    "equals": "CTA"
                }
            },
            "sorts": [
              {
                  "property": "id",
                  "direction": "ascending"
              }
          ]
          }
        )
      })
      .then((response) => response.json())
      .then((data) => {
        // Sanitiza a resposta do Notion devolvendo somente as dados necessários
        const filteredData = data.results?.map((item: any): Link => {
          return {
            id: item.properties?.id?.number,
            label: item.properties?.Label?.rich_text[0].plain_text,
            url: item.properties?.url?.url,
            target: item.properties?.target?.select?.name
          };
        })
        return filteredData;
      });
    } catch (error) {
      return new Response(JSON.stringify( error ), { headers });
    }

    // Retorna os dados via API
    try {
      return new Response(JSON.stringify(LINKS), { headers });
    } catch (error) {
      console.error(error);
      return new Response(JSON.stringify( error ), { headers } );
    }

  } 
  
  
  return new Response(JSON.stringify ( { error : "Unauthorized access!" } ), { headers });

});

Extrutura dos dados no Notion: