import { NextRequest, NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";
import { getStudent } from "@/lib/studentAuth";

export async function DELETE(req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
  const student = await getStudent();
  if (!student) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });

  const { id } = await params;

  const request_ = await prisma.schedule_change_requests.findUnique({ where: { id: Number(id) } });
  if (!request_ || request_.student_id !== student.id) {
    return NextResponse.json({ error: "Request not found" }, { status: 404 });
  }
  if (request_.status !== "pending") {
    return NextResponse.json({ error: "Only pending requests can be cancelled" }, { status: 400 });
  }

  await prisma.schedule_change_requests.update({
    where: { id: Number(id) },
    data: { status: "cancelled" },
  });

  return NextResponse.json({ message: "Request cancelled" });
}