#!/usr/bin/env node

const { spawn } = require('child_process');
const path = require('path');

// Get the directory where this script is located
const scriptDir = path.dirname(__filename);
const runServerPath = path.join(scriptDir, '..', 'run_server.py');

// Check if Python is available
function checkPython() {
  return new Promise((resolve, reject) => {
    const pythonCmd = process.platform === 'win32' ? 'python' : 'python3';
    const proc = spawn(pythonCmd, ['--version'], { stdio: 'pipe' });
    
    proc.on('close', (code) => {
      if (code === 0) {
        resolve(pythonCmd);
      } else {
        // Try alternative python command
        const altPythonCmd = 'python';
        const altProc = spawn(altPythonCmd, ['--version'], { stdio: 'pipe' });
        
        altProc.on('close', (altCode) => {
          if (altCode === 0) {
            resolve(altPythonCmd);
          } else {
            reject(new Error('Python is not installed or not in PATH'));
          }
        });
      }
    });
  });
}

// Run the Python server
async function runServer() {
  try {
    const pythonCmd = await checkPython();
    console.log('🚀 Starting Portainer Core MCP Server via npx...');
    
    const proc = spawn(pythonCmd, [runServerPath], { 
      stdio: 'inherit',
      cwd: path.dirname(runServerPath)
    });
    
    proc.on('error', (err) => {
      console.error('❌ Failed to start server:', err.message);
      process.exit(1);
    });
    
    proc.on('close', (code) => {
      if (code !== 0) {
        console.error(`❌ Server exited with code ${code}`);
        process.exit(code);
      }
    });
    
    // Handle signals
    process.on('SIGINT', () => {
      console.log('\n👋 Stopping server...');
      proc.kill('SIGINT');
    });
    
    process.on('SIGTERM', () => {
      console.log('\n👋 Stopping server...');
      proc.kill('SIGTERM');
    });
    
  } catch (error) {
    console.error('❌ Error:', error.message);
    console.error('💡 Please ensure Python 3.8+ is installed and in your PATH');
    process.exit(1);
  }
}

// Show help
function showHelp() {
  console.log(`
Portainer Core MCP Server

Usage:
  npx portainer-core-mcp [options]

Options:
  -h, --help     Show this help message
  -v, --version  Show version information

Environment Variables:
  PORTAINER_URL      Portainer instance URL (required)
  PORTAINER_API_KEY  Portainer API key (required)
  LOG_LEVEL          Logging level (default: INFO)
  DEBUG              Enable debug mode (default: false)

Examples:
  npx portainer-core-mcp
  PORTAINER_URL=https://portainer.example.com PORTAINER_API_KEY=your-key npx portainer-core-mcp
`);
}

// Main
const args = process.argv.slice(2);

if (args.includes('-h') || args.includes('--help')) {
  showHelp();
  process.exit(0);
}

if (args.includes('-v') || args.includes('--version')) {
  const packageJson = require('../package.json');
  console.log(`portainer-core-mcp v${packageJson.version}`);
  process.exit(0);
}

runServer().catch(console.error);