import express from 'express';
import nodemailer from 'nodemailer';
import path from 'path';
import { fileURLToPath } from 'url';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const app = express();
app.use(express.json());
// Serve static files from Vite build
app.use(express.static(path.join(__dirname, 'dist')));
// Contact API endpoint
app.post('/api/contact', async (req, res) => {
    const { name, organisation, email, subject, message } = req.body;
    if (!name || !email || !subject || !message) {
        return res.status(400).json({ success: false, message: 'All fields are required' });
    }
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    if (!emailRegex.test(email)) {
        return res.status(400).json({ success: false, message: 'Invalid email address' });
    }
    const transporter = nodemailer.createTransport({
        host: process.env.SMTP_HOST,
        port: Number(process.env.SMTP_PORT),
        secure: true,
        auth: {
            user: process.env.SMTP_USER,
            pass: process.env.SMTP_PASS,
        },
    });
    const contactEmail = process.env.CONTACT_EMAIL || 'andy@charlwood.xyz';
    try {
        // Admin notification
        await transporter.sendMail({
            from: `"${name}" <${process.env.SMTP_USER}>`,
            replyTo: email,
            to: contactEmail,
            subject: `Portfolio Referral: ${subject}`,
            html: `
        <div style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto;">
          <h2 style="color: #00897B; border-bottom: 2px solid #00897B; padding-bottom: 10px;">
            New Patient Referral
          </h2>
          <div style="background: #f5f5f5; padding: 20px; border-radius: 8px; margin: 20px 0;">
            <p><strong>Referring Clinician:</strong> ${name}</p>
            <p><strong>Organisation:</strong> ${organisation || 'Not specified'}</p>
            <p><strong>Email:</strong> ${email}</p>
            <p><strong>Subject:</strong> ${subject}</p>
          </div>
          <div style="padding: 20px 0;">
            <h3 style="color: #333;">Clinical Details:</h3>
            <p style="white-space: pre-wrap; line-height: 1.6;">${message}</p>
          </div>
          <hr style="border: none; border-top: 1px solid #ddd; margin: 20px 0;" />
          <p style="color: #666; font-size: 12px;">
            This message was sent from your portfolio contact form.
          </p>
        </div>
      `,
        });
        // Auto-reply
        await transporter.sendMail({
            from: `"Andy Charlwood" <${process.env.SMTP_USER}>`,
            to: email,
            subject: 'Thanks for getting in touch!',
            html: `
        <div style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto;">
          <h2 style="color: #00897B; border-bottom: 2px solid #00897B; padding-bottom: 10px;">
            Thanks for your message, ${name}!
          </h2>
          <p style="line-height: 1.6;">
            I've received your referral and will get back to you as soon as possible.
          </p>
          <div style="background: #f5f5f5; padding: 20px; border-radius: 8px; margin: 20px 0;">
            <p><strong>Your message:</strong></p>
            <p style="white-space: pre-wrap; color: #555;">${message}</p>
          </div>
          <p style="line-height: 1.6;">
            Best regards,<br/>
            <strong>Andy Charlwood</strong><br/>
            Informatics Pharmacist &middot; NHS Norfolk &amp; Waveney ICB
          </p>
          <hr style="border: none; border-top: 1px solid #ddd; margin: 20px 0;" />
          <p style="color: #666; font-size: 12px;">
            This is an automated confirmation. Please do not reply to this email.
          </p>
        </div>
      `,
        });
        return res.status(200).json({ success: true, message: 'Referral sent successfully!' });
    }
    catch (error) {
        console.error('Email error:', error);
        return res.status(500).json({ success: false, message: 'Failed to send referral. Please try again.' });
    }
});
// Chat proxy endpoint — keeps API key server-side
app.post('/api/chat', async (req, res) => {
    const apiKey = process.env.OPEN_ROUTER_API_KEY;
    if (!apiKey) {
        return res.status(500).json({ error: 'LLM API key not configured' });
    }
    try {
        const response = await fetch('https://openrouter.ai/api/v1/chat/completions', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${apiKey}`,
                'HTTP-Referer': req.headers.origin || req.headers.referer || '',
                'X-Title': 'Andy Charlwood Portfolio',
            },
            body: JSON.stringify(req.body),
        });
        if (!response.ok) {
            return res.status(response.status).json({ error: `LLM API error: ${response.status}` });
        }
        res.setHeader('Content-Type', 'text/event-stream');
        res.setHeader('Cache-Control', 'no-cache');
        res.setHeader('Connection', 'keep-alive');
        const reader = response.body?.getReader();
        if (!reader) {
            return res.status(500).json({ error: 'No response body' });
        }
        const pump = async () => {
            while (true) {
                const { done, value } = await reader.read();
                if (done)
                    break;
                res.write(value);
            }
            res.end();
        };
        await pump();
    }
    catch (error) {
        console.error('Chat proxy error:', error);
        if (!res.headersSent) {
            return res.status(500).json({ error: 'Failed to proxy chat request' });
        }
        res.end();
    }
});
// SPA fallback
app.get('*', (_req, res) => {
    res.sendFile(path.join(__dirname, 'dist', 'index.html'));
});
const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
    console.log(`Server running on port ${PORT}`);
});