import { NextResponse } from "next/server"
import { eq } from "drizzle-orm"
import { db } from "@/lib/db"
import { profiles } from "@/lib/db/schema"
import { getSessionUser } from "@/lib/session"
import { cancelSubscription } from "@/lib/paypal/checkout"

// Cancel the signed-in user's PayPal subscription. The account keeps access
// until the paid period ends; the BILLING.SUBSCRIPTION.CANCELLED webhook does
// the final downgrade to starter.
export async function POST() {
  const user = await getSessionUser()
  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })

  const profile = await db.query.profiles.findFirst({
    where: eq(profiles.id, user.id),
    columns: { paypal_subscription_id: true },
  })
  if (!profile?.paypal_subscription_id) {
    return NextResponse.json({ error: "No PayPal subscription to cancel" }, { status: 400 })
  }

  const ok = await cancelSubscription(profile.paypal_subscription_id)
  if (!ok) return NextResponse.json({ error: "PayPal cancellation failed" }, { status: 502 })

  await db
    .update(profiles)
    .set({ subscription_status: "canceled" })
    .where(eq(profiles.id, user.id))

  return NextResponse.json({ ok: true })
}