/**
 * Receives POST from Hail Recon when a monitored address is hailed.
 * Stores the storm event in Vercel KV so /api/hail-status can serve it.
 *
 * Configure in Hail Recon dashboard:
 *   Webhook URL: https://yourapp.vercel.app/api/hail-webhook?secret=YOUR_WEBHOOK_SECRET
 *
 * Requires Vercel KV to be connected for persistence.
 * Without KV: logs the event but auto Storm Mode won't trigger on next poll.
 */

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

    const secret = process.env.HAIL_RECON_WEBHOOK_SECRET;
    if (secret && req.query.secret !== secret) {
        return res.status(401).json({ error: 'Unauthorized' });
    }

    const payload = req.body || {};

    const stormEvent = {
        address:    payload.address   || payload.street  || 'Unknown address',
        city:       payload.city      || '',
        state:      payload.state     || 'TX',
        zip:        payload.zip       || '',
        hailSize:   payload.hailSize  || payload.hail_size || payload.size || null,
        stormDate:  payload.stormDate || payload.storm_date || payload.date || new Date().toISOString(),
        markerId:   payload.markerId  || payload.AddressMarker_id || null,
        receivedAt: Date.now(),
    };

    try {
        const { kv } = await import('@vercel/kv');
        await kv.set('lastStormEvent', stormEvent);
        console.log('[hail-webhook] Storm event stored in KV:', stormEvent);
    } catch {
        // KV not configured — log only, auto Storm Mode won't trigger
        console.log('[hail-webhook] KV unavailable. Event received but not persisted:', stormEvent);
    }

    return res.status(200).json({ ok: true, received: stormEvent });
}