import { NextResponse } from 'next/server';
import Imap from 'imap';

export async function POST(request: Request) {
  try {
    const { email, password, host, port } = await request.json();
    
    // Ensure port is a valid number
    const portNumber = parseInt(port, 10);
    if (isNaN(portNumber) || portNumber < 0 || portNumber > 65535) {
      throw new Error('Invalid port number');
    }

    const imapConfig = {
      user: email,
      password: password,
      host: host,
      port: portNumber,
      tls: true,
      authTimeout: 10000,
      connTimeout: 10000,
      debug: console.log
    };

    console.log('Attempting IMAP connection with config:', {
      ...imapConfig,
      password: '[REDACTED]'
    });

    const imap = new Imap(imapConfig);

    return new Promise((resolve, reject) => {
      imap.once('ready', () => {
        console.log('IMAP connection successful');
        imap.end();
        resolve(NextResponse.json({ success: true }));
      });

      imap.once('error', (err: Error) => {
        console.error('IMAP connection error:', err);
        reject(NextResponse.json({ 
          error: 'IMAP connection failed', 
          details: err.message 
        }, { status: 500 }));
      });

      imap.connect();
    });
  } catch (error) {
    console.error('Error in test-connection:', error);
    return NextResponse.json({ 
      error: 'Failed to test connection', 
      details: error instanceof Error ? error.message : 'Unknown error' 
    }, { status: 500 });
  }
}