import Fastify from "fastify";
import { config } from "./config.ts";
import { runWorkerOnce } from "./processor.ts";

const app = Fastify({
  logger: true
});

let lastRun: { processed: boolean; assetId?: string; error?: string } | null = null;

app.get("/health", async () => ({
  status: "ok",
  service: "worker",
  lastRun
}));

app.post("/run-once", async () => {
  lastRun = await runWorkerOnce();
  return lastRun;
});

const interval = setInterval(() => {
  void runWorkerOnce()
    .then((result) => {
      lastRun = result;
      if (result.processed) {
        app.log.info({ assetId: result.assetId }, "Processed queued asset.");
      }
    })
    .catch((error) => {
      app.log.error(error);
      lastRun = {
        processed: false,
        error: error instanceof Error ? error.message : "Unknown worker error."
      };
    });
}, config.pollIntervalMs);

process.on("SIGINT", () => clearInterval(interval));
process.on("SIGTERM", () => clearInterval(interval));

try {
  await app.listen({
    port: config.port,
    host: config.host
  });
} catch (error) {
  app.log.error(error);
  clearInterval(interval);
  process.exit(1);
}