uptime/src/api.ts

import { perform } from "./email";
import { redactJob, type EmailJob } from "./job";
import { ConsoleLogger } from "./logger";

export const main = (port: number) => {
  const server = Bun.serve({
    port,
    async fetch(req) {
      ConsoleLogger.info(`Received request: ${req.url}`)();

      const url = new URL(req.url);
      if (req.method === "POST" && url.pathname === "/api/email") {
        const job: EmailJob = await req.json();
        const jobInsensitive = redactJob(job);

        const uuid = crypto.randomUUID();
        ConsoleLogger.info(
          `[${uuid}] Received email job: ${JSON.stringify(jobInsensitive)}`,
        )();

        const performEmailTest = perform(job)();
        return performEmailTest
          .then((result) => {
            if (result._tag === "Left") {
              const error = result.left;
              ConsoleLogger.warn(
                `[${uuid}] job failure due to ${error.message}`,
              )();
              return new Response(error.message, {
                status: 400,
              });
            }
            ConsoleLogger.info(`[${uuid}] success`)();
            return Response.json({ success: true });
          })
          .catch((e) => {
            ConsoleLogger.error(`[${uuid}] internal failure due to ${e}`)();
            return new Response(e.message, {
              status: 500,
            });
          });
      }
      return new Response("404!", { status: 404 });
    },
  });
  ConsoleLogger.info(`Listening on port ${port}`)();
  return server;
};