import express from 'express';
import { readFileSync } from 'node:fs';
// @ts-ignore
import { XMLHttpRequest } from 'xmlhttprequest';
// @ts-ignore
globalThis.XMLHttpRequest = XMLHttpRequest;

// Polyfill localStorage for Parse SDK
const memoryStorage = {
  _data: new Map<string, string>(),
  getItem(key: string) {
    return this._data.get(key) || null;
  },
  setItem(key: string, value: string) {
    this._data.set(key, String(value));
  },
  removeItem(key: string) {
    this._data.delete(key);
  },
  clear() {
    this._data.clear();
  },
  key(index: number) {
    return Array.from(this._data.keys())[index] || null;
  },
  get length() {
    return this._data.size;
  }
};

// @ts-ignore
globalThis.localStorage = memoryStorage;

/**
 * 注意：生产/客户实例正式入口是 fmode-server 加载 api/routes.ts。
 * 本 server.ts 仅作本地开发壳，不挂载直连上游的 Sorftime/TikHub token。
 */
function getConfig() {
  try {
    const configPath = process.env.NODE_ENV === 'test' ? './config.test.json' : './config.json';
    const configContent = readFileSync(configPath, 'utf-8');
    return JSON.parse(configContent);
  } catch (error: unknown) {
    const errorMessage = error instanceof Error ? error.message : 'Unknown error';
    console.warn('Config file not found, using defaults:', errorMessage);
    return {
      parse: {
        port: 3000,
        appId: 'TARGET_PARSE_APP_ID',
        serverURL: 'http://localhost:3000/parse'
      }
    };
  }
}

const app = express();
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

async function startServer() {
  const config = getConfig();
  const PORT = process.env.PORT || config.parse?.port || 3000;

  const Parse = require('parse');
  Parse.initialize(config.parse.appId);
  Parse.serverURL = `http://localhost:${PORT}/parse`;
  Parse.masterKey = config.parse.masterKey;
  // @ts-ignore
  globalThis.Parse = Parse;

  app.use((req: any, res: any, next: () => void) => {
    console.log(`[${new Date().toISOString()}] ${req.method} ${req.path}`);
    next();
  });

  app.get('/health', (req: any, res: any) => {
    res.json({
      status: 'healthy',
      instance: 'TARGET-voc-instance',
      timestamp: new Date().toISOString(),
      uptime: process.uptime()
    });
  });

  app.get('/', (req: any, res: any) => {
    res.json({
      message: 'TARGET VOC Instance - dev shell',
      version: '1.0.0-customer-relay',
      note: 'Production uses fmode-server + api/routes.ts',
      endpoints: ['/api', '/health', '/parse']
    });
  });

  // 开发壳可选挂载 api/routes（正式环境由 fmode-server 自动扫描）
  try {
    const apiRouter = (await import('./api/routes.ts')).default;
    app.use('/api', apiRouter);
    console.log('[DevShell] /api mounted from api/routes.ts');
  } catch (e: any) {
    console.warn('[DevShell] api/routes.ts not mounted in this runtime:', e?.message || e);
  }

  app.use((req: any, res: any) => {
    res.status(404).json({
      message: 'Not Found',
      path: req.path,
      method: req.method
    });
  });

  app.use((err: any, req: any, res: any, next: any) => {
    console.error('Error:', err?.message || err);
    res.status(500).json({
      message: 'Internal Server Error',
      error: err?.message
    });
  });

  app.listen(PORT, () => {
    console.log(`[TARGET-voc-instance] listening on :${PORT}`);
  });
}

startServer().catch((err) => {
  console.error('Failed to start server:', err);
  process.exit(1);
});