#!/usr/bin/env node
const fs = require('fs');
const path = require('path');
const os = require('os');
const { execSync } = require('child_process');

console.log('╔════════════════════════════════════════════════════════╗');
console.log('║  MCP Configuration Wizard - System Detection          ║');
console.log('╚════════════════════════════════════════════════════════╝\n');

// 检测系统信息
const detection = {
  timestamp: new Date().toISOString(),
  system: {
    platform: os.platform(),
    username: os.userInfo().username,
    homedir: os.homedir(),
    nodeVersion: process.version
  },
  claude: {
    configDir: null,
    configFile: null,
    hasExistingConfig: false,
    existingMcpServers: []
  },
  environment: {
    variables: {},
    mcpRelated: []
  },
  npm: {
    globalPackages: [],
    mcpPackages: []
  }
};

// 1. 检测 Claude Code 配置目录
console.log('🔍 Detecting Claude Code configuration...');
const possibleConfigDirs = [
  path.join(os.homedir(), '.claude'),
  path.join(os.homedir(), 'AppData', 'Roaming', 'Claude'),
  path.join(os.homedir(), 'Library', 'Application Support', 'Claude')
];

for (const dir of possibleConfigDirs) {
  if (fs.existsSync(dir)) {
    detection.claude.configDir = dir;
    console.log(`  ✓ Found: ${dir}`);
    break;
  }
}

if (!detection.claude.configDir) {
  console.log('  ⚠ Claude config directory not found, will create on apply');
}

// 检测现有配置文件
const configFile = path.join(os.homedir(), '.claude.json');
if (fs.existsSync(configFile)) {
  detection.claude.configFile = configFile;
  detection.claude.hasExistingConfig = true;
  try {
    const config = JSON.parse(fs.readFileSync(configFile, 'utf-8'));
    if (config.mcpServers) {
      detection.claude.existingMcpServers = Object.keys(config.mcpServers);
      console.log(`  ✓ Existing config found with ${detection.claude.existingMcpServers.length} MCP servers`);
    }
  } catch (e) {
    console.log('  ⚠ Config file exists but cannot be parsed');
  }
} else {
  console.log('  ℹ No existing .claude.json found');
}

// 2. 检测环境变量
console.log('\n🔍 Detecting environment variables...');
const mcpEnvVars = [
  'GITHUB_PERSONAL_ACCESS_TOKEN',
  'SLACK_BOT_TOKEN', 'SLACK_TEAM_ID',
  'LINEAR_API_KEY',
  'BROWSERBASE_PROJECT_ID', 'BROWSERBASE_API_KEY',
  'CLOUDFLARE_API_TOKEN',
  'FIRECRAWL_API_KEY',
  'SUPABASE_URL', 'SUPABASE_SERVICE_ROLE_KEY',
  'SENTRY_AUTH_TOKEN',
  'NOTION_API_KEY',
  'VERCEL_TOKEN',
  'FIREBASE_PROJECT_ID', 'FIREBASE_PRIVATE_KEY', 'FIREBASE_CLIENT_EMAIL'
];

mcpEnvVars.forEach(varName => {
  const value = process.env[varName];
  if (value) {
    detection.environment.mcpRelated.push(varName);
    detection.environment.variables[varName] = value.substring(0, 10) + '...'; // 只保存前缀用于检测
  }
});

console.log(`  ✓ Found ${detection.environment.mcpRelated.length} MCP-related environment variables`);
detection.environment.mcpRelated.forEach(v => console.log(`    - ${v}`));

// 3. 检测已安装的 npm 包
console.log('\n🔍 Detecting installed npm packages...');
try {
  const globalList = execSync('npm list -g --depth=0 --json', { encoding: 'utf-8', stdio: ['pipe', 'pipe', 'ignore'] });
  const packages = JSON.parse(globalList);
  if (packages.dependencies) {
    detection.npm.globalPackages = Object.keys(packages.dependencies);

    // 筛选 MCP 相关包
    const mcpKeywords = ['mcp', 'modelcontextprotocol', 'claude'];
    detection.npm.mcpPackages = detection.npm.globalPackages.filter(pkg =>
      mcpKeywords.some(kw => pkg.toLowerCase().includes(kw))
    );

    if (detection.npm.mcpPackages.length > 0) {
      console.log(`  ✓ Found ${detection.npm.mcpPackages.length} MCP packages installed globally`);
      detection.npm.mcpPackages.forEach(p => console.log(`    - ${p}`));
    } else {
      console.log('  ℹ No MCP packages found (will use npx)');
    }
  }
} catch (e) {
  console.log('  ⚠ Cannot detect npm packages (npm may not be installed)');
}

// 4. 保存检测结果
const outputFile = path.join(__dirname, 'detection-result.json');
fs.writeFileSync(outputFile, JSON.stringify(detection, null, 2));

console.log('\n╔════════════════════════════════════════════════════════╗');
console.log('║  Detection Complete                                    ║');
console.log('╚════════════════════════════════════════════════════════╝');
console.log(`\n📄 Results saved to: ${outputFile}`);
console.log('\n📊 Summary:');
console.log(`  Platform: ${detection.system.platform}`);
console.log(`  User: ${detection.system.username}`);
console.log(`  Claude Config: ${detection.claude.configDir || 'Not found'}`);
console.log(`  Existing MCP Servers: ${detection.claude.existingMcpServers.length}`);
console.log(`  Environment Variables: ${detection.environment.mcpRelated.length}`);
console.log(`  MCP Packages: ${detection.npm.mcpPackages.length}`);

console.log('\n💡 Next step: Run "node wizard.js" to configure MCP services');