feat: implement backend API clients for multi-marketplace integration and frontend service layer

backend/test_lamoda_api.py

@@ -0,0 +1,45 @@
+import os
+import sys
+from dotenv import load_dotenv
+
+# Add parent dir to path so we can import backend packages
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from backend.lamoda_api import LamodaAPI
+from backend.lamoda_api.exceptions import LamodaAPIError
+
+def test_lamoda_api():
+    # Load environment variables
+    env_path = os.path.join(os.path.dirname(__file__), '.env')
+    load_dotenv(env_path)
+    
+    # Check if key is loaded
+    api_key = os.getenv('LAMODA_API_KEY')
+    
+    if not api_key:
+        print("Error: LAMODA_API_KEY must be in backend/.env")
+        return
+        
+    print("Initializing LamodaAPI...")
+    api = LamodaAPI()
+    
+    try:
+        # Test 1: Get Products
+        print("\n--- Testing Products API ---")
+        products_response = api.products.get_list(limit=5)
+        print("Success! Response keys:", products_response.keys())
+        
+        # Depending on Lamoda's response wrapper, it might be in 'data' or 'items'
+        items = products_response.get("data", [])
+        if not items:
+            items = products_response.get("items", [])
+            
+        print(f"Found {len(items)} products in catalog.")
+            
+    except LamodaAPIError as e:
+        print(f"API Error: {e}")
+    except Exception as e:
+        print(f"Unexpected Error: {e}")
+
+if __name__ == '__main__':
+    test_lamoda_api()