let server: Deno.HttpServer | null  = null;
async function runScript() {
  if (server) {
    await server.shutdown();
  }

  const { startServer } = await import((`./server.ts?cache_bust=${Date.now()}`));
  server = startServer("localhost", 6969);
}

function debounced(fn: () => Promise<void>) {
    let timeoutId: ReturnType<typeof setTimeout> | null;
    return () => {
        if (timeoutId) {
            clearTimeout(timeoutId);
        }

        timeoutId = setTimeout(fn, 200);
    };
}

// Watch for file changes
async function watchFiles(paths: string[], handler: () => void) {
    const watcher = Deno.watchFs(paths);
    for await (const event of watcher) {
        if (event.kind === "modify" || event.kind === "create") {
            handler();
        }
    }
}

async function startup() {
    // Initial run
    runScript();
    await watchFiles(["."], debounced(runScript));
}

if (import.meta.main) {
    await startup()
}