import Router from "@koa/router";
import dgram from "dgram";
import kill from "kill-port";
import { default as Koa } from "koa";
import installQS from "koa-qs";
import { Middlewares } from "sealious";
import TheApp from "./app.js";
import { PORT, SEALIOUS_KILLSWITCH_PORT, SEALIOUS_SANITY } from "./config.js";
import { mainRouter } from "./routes/index.js";
import { waitForMeilisearch } from "./services/meilisearch.js";
import { TheFileManager } from "./file-manager.js";
import { imageRouter } from "./image-router.js";

export const the_app = new TheApp({
	fileManager: TheFileManager,
	imageRouter: imageRouter,
});

void (async function () {
	await kill(PORT);
	await kill(PORT);

	try {
		await waitForMeilisearch(10);
	} catch (e) {
		// eslint-disable-next-line @typescript-eslint/consistent-type-assertions
		if ((e as Error).message === "timeout") {
			console.log("Meilisearch must be running before the app starts!"); // eslint-disable-line no-console
			process.exit(1);
		} else {
			throw e;
		}
	}

	try {
		const koa_app = new Koa();
		const router = new Router();
		installQS(koa_app);
		koa_app.use(Middlewares.handleError());
		koa_app.context.$app = the_app;
		the_app.on("started", async () => {
			mainRouter(the_app, koa_app, router);
		});

		if (SEALIOUS_KILLSWITCH_PORT) {
			const server = dgram.createSocket("udp4");
			server.on("message", () => {
				process.exit(0);
			});
			server.bind(SEALIOUS_KILLSWITCH_PORT);
		}

		await the_app.start();

		koa_app.listen(PORT, "0.0.0.0");
		the_app.Logger.info(
			"STARTED",
			`App running. URL set in manifest: ${the_app.manifest.base_url}`
		);

		if (SEALIOUS_SANITY) {
			console.error("Exiting with error code 0");
			process.exit(0);
		}
	} catch (error) {
		console.error(error);
		if (SEALIOUS_SANITY) {
			console.error("EXITING WITH STATUS 1");
		}
		// we need to always exit with an error status so the systemd unit knows to restart
		process.exit(1);
	}
})();