// Grainy.ai — Support Form API
// Fires a Loops event to focus@grainy.ai with ticket details
//
// Env vars needed:
//   LOOPS_API_KEY   (already set up from your other email flows)
//
// Loops setup:
//   1. Create contact: focus@grainy.ai
//   2. Create event: support_ticket
//   3. Create flow triggered by support_ticket → send email
//   4. In the email template use {{fromEmail}}, {{subject}}, {{message}}, etc.

module.exports = async function handler(req, res) {
  if (req.method !== 'POST') {
    return res.status(405).json({ error: 'Method not allowed' });
  }

  const { email, category, subject, message, clerkUserId, plan } = req.body || {};

  if (!email || !subject || !message) {
    return res.status(400).json({ error: 'Missing required fields' });
  }

  const loopsKey = process.env.LOOPS_API_KEY;
  if (!loopsKey) {
    console.error('LOOPS_API_KEY not configured');
    return res.status(500).json({ error: 'Email service not configured' });
  }

  const categoryLabels = {
    general: 'General',
    billing: 'Billing & Payments',
    bug: 'Bug Report',
    feature: 'Feature Request',
    account: 'Account Issue',
    cancel: 'Cancellation / Refund',
    other: 'Other',
  };

  try {
    const response = await fetch('https://app.loops.so/api/v1/events/send', {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${loopsKey}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        eventName: 'support_ticket',
        email: 'focus@grainy.ai',
        eventProperties: {
          fromEmail: email,
          category: categoryLabels[category] || category,
          subject: subject,
          message: message,
          plan: plan || 'unknown',
          clerkUserId: clerkUserId || '',
        },
      }),
    });

    if (!response.ok) {
      const errText = await response.text();
      console.error('Loops API error:', response.status, errText);
      return res.status(500).json({ error: 'Failed to send support ticket' });
    }

    console.log(`Support ticket sent: [${category}] ${subject} from ${email}`);
    return res.status(200).json({ success: true });
  } catch (err) {
    console.error('Support ticket error:', err.message);
    return res.status(500).json({ error: 'Failed to send support ticket' });
  }
};