// src/email.js
// Email service using Nodemailer for subscription linking notifications

const nodemailer = require('nodemailer');

const transporter = nodemailer.createTransport({
    host: process.env.SMTP_HOST,
    port: 587,
    secure: false, // Use STARTTLS
    auth: {
        user: process.env.SMTP_USER,
        pass: process.env.SMTP_PASS
    }
});

/**
 * Send Discord linking email to subscriber
 * @param {string} name - Customer name
 * @param {string} email - Customer email address
 * @param {string} token - Secure linking token
 * @returns {Promise} - Nodemailer send result
 */
async function sendLinkingEmail(name, email, token) {
    const link = `${process.env.APP_URL}/link?token=${token}`;
    
    const textBody = `Hi ${name},

Thanks for subscribing to Firefrost Gaming!

To access your game servers, please connect your Discord account:

${link}

This link expires in 24 hours. Once connected, you'll see your server channels in Discord with IPs pinned at the top.

Questions? Join us in Discord: https://firefrostgaming.com/discord

- The Firefrost Team
🔥❄️`;

    return transporter.sendMail({
        from: `"Firefrost Gaming" <${process.env.SMTP_USER}>`,
        to: email,
        subject: 'Welcome to Firefrost Gaming! 🔥❄️ One More Step...',
        text: textBody
    });
}

module.exports = { sendLinkingEmail };