route.ts

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/**
 * FD1 Product Detail API Route
 * 
 * GET /api/v1/fd1/products/[id] - Get single product by ID
 */
 
import { NextRequest, NextResponse } from 'next/server';
import { getRequestContext } from '@/lib/server/sessionUtils';
import { createFD1Client } from '@/lib/client/fd1Client';
 
export async function GET(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const context = await getRequestContext(request);
    
    if (!context?.session?.storeUrl) {
      return NextResponse.json(
        { success: false, error: 'Not authenticated' },
        { status: 401 }
      );
    }
 
    const { id } = await params;
    const productId = parseInt(id, 10);
 
    if (isNaN(productId)) {
      return NextResponse.json(
        { success: false, error: 'Invalid product ID' },
        { status: 400 }
      );
    }
 
    // Parse query parameters for field selection
    const searchParams = request.nextUrl.searchParams;
    const fieldsParam = searchParams.get('fields');
 
    let fields: Record<string, any> | undefined;
    if (fieldsParam) {
      fields = {};
      fieldsParam.split(',').forEach(field => {
        fields![field.trim()] = true;
      });
    }
 
    // Create FD1 client
    const fd1Client = createFD1Client({
      baseUrl: context.session.storeUrl!,
      apiKey: context.session.apiKey,
      protocol: 'fd3',
    });
 
    // Fetch product
    const product = await fd1Client.getProduct(productId, fields);
 
    if (!product) {
      return NextResponse.json(
        { success: false, error: 'Product not found' },
        { status: 404 }
      );
    }
 
    return NextResponse.json({
      success: true,
      data: product,
    });
 
  } catch (error) {
    console.error('FD1 product detail API error:', error);
    return NextResponse.json(
      {
        success: false,
        error: error instanceof Error ? error.message : 'Failed to fetch product',
      },
      { status: 500 }
    );
  }
}