import { createServer } from 'node:http';
import path from 'node:path';
import fs from 'node:fs/promises';
import { createApp } from './app';
import { AuthService } from './lib/auth';
import { buildRuntimePaths, render3proxyConfig } from './lib/config';
import { LiveSyncServer } from './lib/liveSync';
import { ThreeProxyManager } from './lib/runtime';
import { StateStore } from './lib/store';

const port = Number(process.env.PORT ?? '3000');
const runtimeRootDir = path.resolve(process.env.RUNTIME_DIR ?? 'runtime');
const statePath = path.join(runtimeRootDir, 'state', 'panel-state.json');
const binaryPath = path.resolve(process.env.THREEPROXY_BINARY ?? '/usr/local/bin/3proxy');
const autoStart = process.env.AUTO_START_3PROXY === 'true';
const authLogin = process.env.PANEL_AUTH_LOGIN ?? 'admin';
const authPassword = process.env.PANEL_AUTH_PASSWORD ?? 'proxy-ui-demo';
const sessionTtlHours = Number(process.env.PANEL_SESSION_TTL_HOURS ?? '24');
const sessionTtlMs = Number.isFinite(sessionTtlHours) && sessionTtlHours > 0
  ? sessionTtlHours * 60 * 60 * 1000
  : 24 * 60 * 60 * 1000;
const authSecret = process.env.PANEL_TOKEN_SECRET;

const store = new StateStore(statePath);
const runtimePaths = buildRuntimePaths(runtimeRootDir);
const runtime = new ThreeProxyManager(binaryPath, runtimePaths.configPath, runtimePaths, autoStart);
const auth = new AuthService({
  login: authLogin,
  password: authPassword,
  ttlMs: sessionTtlMs,
  secret: authSecret,
});

async function main() {
  const initialState = await store.read();
  await fs.mkdir(path.dirname(runtimePaths.configPath), { recursive: true });
  await fs.writeFile(runtimePaths.configPath, render3proxyConfig(initialState, runtimePaths), 'utf8');
  await runtime.initialize();
  const liveSync = new LiveSyncServer({ store, runtime, runtimePaths, auth });
  await liveSync.initialize();
  const app = createApp({ store, runtime, runtimeRootDir, auth, liveSync });
  const server = createServer(app);
  liveSync.attach(server);

  server.listen(port, () => {
    console.log(`Panel server listening on http://0.0.0.0:${port}`);
  });
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});