import { NextResponse } from 'next/server';
import Settings from 'settings';

const IMAGE_SEARCH_API_URL = Settings.commerceUrl + '/image-search/';

const errorResponse = (message: string, status: number) => {
  return NextResponse.json({ error: message }, { status });
};

export async function GET(request: Request) {
  const { searchParams } = new URL(request.url);
  const limit = searchParams.get('limit') || '20';
  const url = searchParams.get('url');
  const excludedProductIds = searchParams.get('excluded_product_ids');

  if (!url) {
    return errorResponse('URL parameter is required', 400);
  }

  if (Settings.commerceUrl === 'default') {
    return errorResponse('Commerce URL is not configured', 500);
  }

  const apiParams = new URLSearchParams();
  apiParams.append('limit', limit);
  apiParams.append('url', url);

  if (excludedProductIds) {
    apiParams.append('excluded_product_ids', excludedProductIds);
  }

  const apiUrl = `${IMAGE_SEARCH_API_URL}?${apiParams.toString()}`;

  try {
    const response = await fetch(apiUrl, {
      method: 'GET',
      headers: {
        Accept: 'application/json'
      }
    });

    if (!response.ok) {
      const errorText = await response.text();
      return errorResponse(
        errorText || `API request failed with status: ${response.status}`,
        response.status
      );
    }

    const responseText = await response.text();

    return NextResponse.json(JSON.parse(responseText));
  } catch (error) {
    return errorResponse((error as Error).message, 500);
  }
}

export async function POST(request: Request) {
  const { searchParams } = new URL(request.url);
  const limit = searchParams.get('limit') || '20';

  if (Settings.commerceUrl === 'default') {
    return errorResponse('Commerce URL is not configured', 500);
  }

  let requestBody;
  try {
    requestBody = await request.json();
  } catch (error) {
    return errorResponse('Invalid JSON in request body', 400);
  }

  if (!requestBody.image) {
    return errorResponse('Image data is required in request body', 400);
  }

  const apiParams = new URLSearchParams();
  apiParams.append('limit', limit);

  const apiUrl = `${IMAGE_SEARCH_API_URL}?${apiParams.toString()}`;

  const bodyData: any = { image: requestBody.image };

  if (requestBody.excluded_product_ids) {
    bodyData.excluded_product_ids = requestBody.excluded_product_ids;
  }

  try {
    const response = await fetch(apiUrl, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        Accept: 'application/json'
      },
      body: JSON.stringify(bodyData)
    });

    if (!response.ok) {
      const errorText = await response.text();
      return errorResponse(
        errorText || `API request failed with status: ${response.status}`,
        response.status
      );
    }

    const responseData = await response.json();
    return NextResponse.json(responseData);
  } catch (error) {
    return errorResponse((error as Error).message, 500);
  }
}