import { NextRequest, NextResponse } from 'next/server';
import { getProductData } from '@akinon/next/data/server';

export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url);
    const pksParam = searchParams.get('pks');

    if (!pksParam) {
      return NextResponse.json(
        { error: 'pks parameter required' },
        { status: 400 }
      );
    }

    const pks = pksParam.split(',').map(Number).filter(Boolean);

    if (pks.length === 0) {
      return NextResponse.json({ error: 'Invalid pks' }, { status: 400 });
    }

    const results = await Promise.all(
      pks.map(async (pk) => {
        try {
          const { breadcrumbData } = await getProductData({ pk });

          const categoryIds =
            breadcrumbData
              ?.map((item: any) => item.extra_context?.attributes?.category_id)
              .filter(Boolean) || [];

          return { pk, categoryIds };
        } catch (error) {
          console.error(`Error fetching product ${pk}:`, error);
          return { pk, categoryIds: [] };
        }
      })
    );

    const mapping: Record<string, number[]> = {};
    results.forEach(({ pk, categoryIds }) => {
      mapping[String(pk)] = categoryIds;
    });

    return NextResponse.json(mapping);
  } catch (error) {
    console.error('Error in product-categories API:', error);
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    );
  }
}