import { NextRequest, NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";
import { requireAdmin } from "@/lib/session";

export async function PATCH(req: NextRequest) {
  const admin = await requireAdmin();
  if (!admin) return NextResponse.json({ error: "Admin requis" }, { status: 403 });

  const { userId, sessionsToAdd, sessionsToRemove } = await req.json();
  if (!userId) return NextResponse.json({ error: "userId requis" }, { status: 400 });

  try {
    const profile = await prisma.yogaProfile.upsert({
      where: { userId },
      update: {},
      create: { userId },
    });

    let newCount = profile.sessionsRemaining;
    if (sessionsToAdd) newCount += Number(sessionsToAdd);
    if (sessionsToRemove) newCount = Math.max(0, newCount - Number(sessionsToRemove));

    const updated = await prisma.yogaProfile.update({
      where: { id: profile.id },
      data: { sessionsRemaining: newCount },
    });

    return NextResponse.json(updated);
  } catch (error) {
    console.error(error);
    return NextResponse.json({ error: "Erreur" }, { status: 500 });
  }
}