route.ts

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import { NextRequest, NextResponse } from 'next/server';
import { getRequestContext, getStoreApiUrl } from '@/lib/server/sessionUtils';
import { FieldpineServerApi } from '@/lib/server/fieldpineApi';
 
/**
 * Statistics API Endpoint
 * Fetches product performance and analytics data using GNAP/BUCK
 * Routes to IIG management portal for reporting
 */
export async function GET(request: NextRequest) {
  try {
    // Get session and store context
    const context = await getRequestContext(request);
    
    if (!context) {
      return NextResponse.json(
        { error: 'Authentication required' },
        { status: 401 }
      );
    }
 
    // Parse query parameters
    const { searchParams } = new URL(request.url);
    
    const customerId = searchParams.get('customerId');
    const type = searchParams.get('type'); // 'product-performance' or 'brands'
    const limit = searchParams.get('limit') || '30';
 
    if (!customerId) {
      return NextResponse.json(
        { error: 'customerId required' },
        { status: 400 }
      );
    }
 
    try {
      // GNAP requests always route to IIG for reporting
      const gnapUrl = getStoreApiUrl(context, 'gnap');
      const api = new FieldpineServerApi(gnapUrl);
      
      let response;
      
      if (type === 'brands') {
        // Fetch brand data
        let buckParams: Record<string, string> = {
          "3": "retailmax.elink.customers",
          "10": "1120",
          "9": `f100,0,${customerId}`,
          "99": Math.random().toString()
        };
        response = await api.buckApiCall(buckParams, context.session.apiKey);
      } else {
        // Fetch product performance stats
        let buckParams: Record<string, string> = {
          "3": "retailmax.elink.stats.product.performance",
          "9": `f107,0,${customerId}`,
          "15": "2,pid",
          "8": limit,
          "100": "1",
          "99": Math.random().toString()
        };
        response = await api.buckApiCall(buckParams, context.session.apiKey);
      }
      
      return NextResponse.json({ 
        success: true, 
        data: response,
        meta: {
          store: context.store.name,
          requestType: 'gnap',
          apiUrl: gnapUrl
        }
      });
      
    } catch (error) {
      console.error('[Stats API] Error:', error);
      return NextResponse.json(
        { error: 'Failed to fetch statistics' },
        { status: 503 }
      );
    }
 
  } catch (error) {
    console.error('[Stats API] Error:', error);
    return NextResponse.json(
      { error: 'Failed to fetch statistics' },
      { status: 500 }
    );
  }
}