import { NextRequest, NextResponse } from "next/server";
import {
  materialGroupCreateSchema,
  materialGroupQuerySchema,
} from "@/lib/validation/materialGroupSchemas";
import {
  createMaterialGroup,
  listMaterialGroups,
} from "@/services/materialGroupService";

export async function GET(request: NextRequest) {
  const parsed = materialGroupQuerySchema.safeParse(
    Object.fromEntries(request.nextUrl.searchParams)
  );
  if (!parsed.success) {
    return NextResponse.json({ error: "Invalid group query" }, { status: 400 });
  }
  return NextResponse.json(
    await listMaterialGroups(parsed.data.classId, parsed.data.type)
  );
}

export async function POST(request: NextRequest) {
  const parsed = materialGroupCreateSchema.safeParse(
    await request.json().catch(() => null)
  );
  if (!parsed.success) {
    return NextResponse.json(
      { error: parsed.error.issues[0]?.message ?? "Invalid group" },
      { status: 400 }
    );
  }
  const group = await createMaterialGroup(parsed.data);
  if (!group) {
    return NextResponse.json({ error: "Class not found" }, { status: 404 });
  }
  return NextResponse.json(group, { status: 201 });
}