Glif API function for Cloudflare Worker.js

// ~*~*~*~ glif.xyz ~*~*~*~
// make sure to edit in your API token instead of "TOP_SECRET_GLIF_API_TOKEN"
// ~*~*~*~~*~*~*~~*~*~*~~*~

const apiUrl = 'https://alpha.glif.xyz/api/graph-run';  
const apiToken = 'TOP_SECRET_GLIF_API_TOKEN';

export default {
  async fetch(request, env) {      
    if (request.method === "OPTIONS") {
      return handleOptions(request)
    } else if (request.method === "POST") {
      return handlePost(request)
    } else {
      return new Response("nothing to see here", {
        status: 405,
        statusText: "Method Not Allowed",
      })
    }
  }
}

const corsHeaders = {
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Methods": "POST, OPTIONS",
  "Access-Control-Allow-Headers": "Content-Type",
}

function handleOptions(request) {
  if (request.headers.get("Origin") !== null &&
    request.headers.get("Access-Control-Request-Method") !== null &&
    request.headers.get("Access-Control-Request-Headers") !== null) {
    // Handle CORS pre-flight request.
    return new Response(null, {
      headers: corsHeaders
    })
  } else {
    // Handle standard OPTIONS request.
    return new Response(null, {
      headers: {
        "Allow": "POST, OPTIONS",
      }
    })
  }
}

async function handlePost(request) {
  const json = await request.json();
  const id = json.id;
  const input = json.input;
  if(!id) throw new Error("missing id");
  console.log("params", { id, input });
  const result = await runGlif(id, input);
  console.log("result", result);

  const responseHeaders = {
    'Content-Type': 'application/json',
    'Access-Control-Allow-Headers': '*',
    'Access-Control-Allow-Methods': 'GET, POST, OPTIONS',
    'Access-Control-Allow-Origin': '*',
  };
  return new Response(
    JSON.stringify({ input, ...result }), {
      headers: {
        "Content-Type": "application/json",
        ...corsHeaders,
      }
    }
  )
}

function runGlif(id, input) {  
  const data = {
    id,
    input
  };
  
  console.log("runGlif", { id, input });
  return fetch(apiUrl, {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${apiToken}`,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify(data)
  })
  .then(response => response.text())
  .then(data => {
    // console.log("data", data)    
    const entries = data.split("\n").filter((output) => {
      return output !== "";
    });
    const lastEntry = entries[entries.length - 1];
    console.log("lastEntry", lastEntry);
    return { output: JSON.parse(lastEntry)?.output };    
  })
  .catch(error => {
    console.error(error);
    return { output: null, error }
  });
}