import { pbAdmin } from '$lib/server/pocketbase';
import type Stripe from 'stripe';

// Shared Stripe event handling. The real webhook (/api/webhooks/stripe) routes
// through here so the DB effects are identical.
export async function handleStripeEvent(event: Stripe.Event): Promise<void> {
	switch (event.type) {
		case 'checkout.session.completed': {
			const session = event.data.object as Stripe.Checkout.Session;
			const famId = session.metadata?.famId;
			if (famId && session.customer) {
				await pbAdmin.update('fams', famId, {
					stripeCustomerId: String(session.customer),
					active: true,
					paymentMode: 'sub'
				});
			}
			break;
		}
		case 'customer.subscription.created':
		case 'customer.subscription.updated':
		case 'customer.subscription.paused': {
			const sub = event.data.object as Stripe.Subscription;
			await setActiveFromSubscription(sub);
			break;
		}
		case 'customer.subscription.deleted': {
			const sub = event.data.object as Stripe.Subscription;
			const fams = await pbAdmin.getList('fams', `stripeCustomerId = '${sub.customer}'`);
			const fam = fams[0];
			if (fam) {
				await pbAdmin.update('fams', fam.id, { active: false, paymentMode: 'canceled' });
			}
			break;
		}
	}
}

async function setActiveFromSubscription(sub: Stripe.Subscription) {
	// The fam that owns this subscription — look up by the customer id stored
	// on the fam (set at checkout). Stripe customer id is unique per fam.
	const fams = await pbAdmin.getList('fams', `stripeCustomerId = '${sub.customer}'`);
	const fam = fams[0];
	if (!fam) return;
	// Active only while the sub is trialing/active (not past_due/canceled/paused).
	const active =
		sub.status === 'trialing' || sub.status === 'active' || sub.status === 'past_due';
	await pbAdmin.update('fams', fam.id, { active, paymentMode: 'sub' });
}