/**
 * Mock API 服务器 — 模拟"余额不足"响应
 * 用于测试 OpenClaw 是否能正确识别 errorHandling 条件并弹出充值网址
 *
 * 启动: node scripts/mock-balance-server.js
 * 端点: POST http://localhost:3899/api/mock/skill
 *   - 默认返回 { code: -2, msg: "余额不足，请充值后重试" }
 *   - 加 ?mode=ok 返回 { code: 200, data: { workId: "mock123" } }
 *   - 加 ?mode=unauth 返回 { code: 401, msg: "unauthorized token" }
 */

const http = require('http');

const PORT = 3899;

const RESPONSES = {
  insufficient: {
    code: -2,
    msg: '余额不足，请充值后重试',
    message: '余额不足，请充值后重试'
  },
  ok: {
    code: 200,
    data: { workId: 'mock_' + Date.now() }
  },
  unauth: {
    code: 401,
    msg: 'unauthorized token invalid'
  }
};

const server = http.createServer((req, res) => {
  // CORS headers
  res.setHeader('Access-Control-Allow-Origin', '*');
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
  res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization, X-Parse-Application-Id');

  if (req.method === 'OPTIONS') {
    res.writeHead(204);
    res.end();
    return;
  }

  const url = new URL(req.url, `http://localhost:${PORT}`);
  const mode = url.searchParams.get('mode') || 'insufficient';

  const body = RESPONSES[mode] || RESPONSES.insufficient;

  console.log(`[${new Date().toISOString()}] ${req.method} ${req.url} => mode=${mode}`);
  console.log(`  Response: ${JSON.stringify(body)}`);

  res.writeHead(200, { 'Content-Type': 'application/json' });
  res.end(JSON.stringify(body));
});

server.listen(PORT, () => {
  console.log(`\n╔══════════════════════════════════════════════════════╗`);
  console.log(`║  Mock Balance Server 已启动                         ║`);
  console.log(`╚══════════════════════════════════════════════════════╝`);
  console.log(`\n  余额不足: POST http://localhost:${PORT}/api/mock/skill`);
  console.log(`  正常响应: POST http://localhost:${PORT}/api/mock/skill?mode=ok`);
  console.log(`  未授权:   POST http://localhost:${PORT}/api/mock/skill?mode=unauth`);
  console.log(`\n等待请求...\n`);
});