#!/usr/bin/env ts-node

/**
 * Basic usage example for SMTP over WebSocket client
 */

import { SMTPOverWSClient, MessagePriority } from '../src/index';

async function basicUsageExample() {
    console.log('Starting SMTP WebSocket Client Basic Example\n');

    // Create client with basic configuration
    const client = new SMTPOverWSClient({
        url: 'ws://localhost:3000/smtp', // Replace with your server URL
        apiKey: 'your-api-key-here',    // Replace with your API key
        debug: true,
        reconnectInterval: 5000,
        maxReconnectAttempts: 3
    });

    // Set up event listeners
    client.on('connected', () => {
        console.log('Connected to WebSocket server');
    });

    client.on('authenticated', () => {
        console.log('Authentication successful');
    });

    client.on('disconnected', (reason) => {
        console.log(`Disconnected: ${reason || 'Unknown reason'}`);
    });

    client.on('error', (error) => {
        console.error('Client error:', error.message);
    });

    client.on('messageQueued', (messageId, queueSize) => {
        console.log(`Message ${messageId} queued (Queue size: ${queueSize})`);
    });

    client.on('messageProcessed', (messageId, responseTime) => {
        console.log(`Message ${messageId} processed in ${responseTime}ms`);
    });

    try {
        console.log('Sending SMTP commands...\n');

        // Send basic SMTP sequence
        const ehloResponse = await client.sendSMTPCommand('EHLO example.com\r\n');
        console.log('EHLO Response:', ehloResponse.trim());

        const mailFromResponse = await client.sendSMTPCommand('MAIL FROM: <sender@example.com>\r\n');
        console.log('MAIL FROM Response:', mailFromResponse.trim());

        const rcptToResponse = await client.sendSMTPCommand('RCPT TO: <recipient@example.com>\r\n');
        console.log('RCPT TO Response:', rcptToResponse.trim());

        const dataResponse = await client.sendSMTPCommand('DATA\r\n');
        console.log('DATA Response:', dataResponse.trim());

        // Send email content
        const emailContent = `From: sender@example.com\r\nTo: recipient@example.com\r\nSubject: Test Email\r\n\r\nThis is a test email.\r\n.\r\n`;
        const contentResponse = await client.sendSMTPCommand(emailContent);
        console.log('Content Response:', contentResponse.trim());

        const quitResponse = await client.sendSMTPCommand('QUIT\r\n');
        console.log('QUIT Response:', quitResponse.trim());

        console.log('\nAll SMTP commands sent successfully!');

        // Display statistics
        const stats = client.getStats();
        console.log('\nClient Statistics:');
        console.log(`   Messages Queued: ${stats.messagesQueued}`);
        console.log(`   Messages Processed: ${stats.messagesProcessed}`);
        console.log(`   Messages Failed: ${stats.messagesFailed}`);
        console.log(`   Average Response Time: ${stats.averageResponseTime.toFixed(2)}ms`);
        console.log(`   Connection Uptime: ${stats.connectionUptime}ms`);

    } catch (error) {
        console.error('Error during SMTP communication:', error);
    } finally {
        console.log('\nShutting down client...');
        await client.shutdown();
        console.log('Client shutdown complete');
    }
}

// Run the example
if (require.main === module) {
    basicUsageExample()
        .then(() => {
            console.log('\nBasic usage example completed successfully');
            process.exit(0);
        })
        .catch((error) => {
            console.error('\nExample failed:', error);
            process.exit(1);
        });
}

export { basicUsageExample };