import { createApp } from "../app.js";
import { parseConfig } from "../lib/config.js";
import { createDb } from "../lib/db.js";
import { createFlags } from "../lib/flags.js";
import { createLogger } from "../lib/logger.js";
import { createCache } from "../lib/redis.js";
import { createRuntimeConfig } from "../lib/runtime-config.js";

const config = parseConfig(process.env);
const logger = createLogger(config);
const db = config.DATABASE_URL ? createDb(config.DATABASE_URL) : undefined;
const cache = config.REDIS_URL ? createCache(config.REDIS_URL) : undefined;
const flags = createFlags(config, logger);
const runtimeConfig = await createRuntimeConfig({
  path: config.RUNTIME_CONFIG_PATH,
  logger,
});

const server = createApp({
  config,
  logger,
  db,
  cache,
  flags,
  runtimeConfig,
}).listen(config.PORT, () => {
  logger.info({ port: config.PORT }, "listening");
});

function shutdown(signal: string) {
  logger.info({ signal }, "shutting down");
  runtimeConfig.close();
  server.close(async () => {
    await Promise.allSettled([db?.close(), cache?.close(), flags.close()]);
    process.exit(0);
  });
  setTimeout(() => process.exit(1), 10_000).unref();
}
process.on("SIGTERM", () => shutdown("SIGTERM"));
process.on("SIGINT", () => shutdown("SIGINT"));