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

backend/test_wb_api.py

@@ -0,0 +1,52 @@
+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.wb_api import WildberriesAPI
+from backend.wb_api.exceptions import WBAPIError
+
+def test_wb_api():
+    # Load environment variables
+    env_path = os.path.join(os.path.dirname(__file__), '.env')
+    load_dotenv(env_path)
+    
+    # Check if key is loaded
+    api_token = os.getenv('WB_API_TOKEN')
+    
+    if not api_token:
+        print("Error: WB_API_TOKEN must be in backend/.env")
+        return
+
+    print("Initializing WildberriesAPI...")
+    api = WildberriesAPI()
+    
+    try:
+        # Test 1: Get Content (Products)
+        print("\n--- Testing Content API (Products) ---")
+        cards_response = api.content.get_cards_list(limit=5)
+        print("Success! Response keys:", cards_response.keys())
+        
+        cards = cards_response.get("cards", [])
+        print(f"Found {len(cards)} products.")
+        
+        if cards:
+            nm_id = cards[0].get("nmID")
+            vendor_code = cards[0].get("vendorCode")
+            print(f"First product - nmID: {nm_id}, Vendor Code: {vendor_code}")
+            
+        # Test 2: Get Marketplace (Orders)
+        print("\n--- Testing Marketplace API (New Orders) ---")
+        orders_response = api.marketplace.get_new_orders()
+        orders = orders_response.get("orders", [])
+        print(f"Found {len(orders)} new FBS orders.")
+            
+    except WBAPIError as e:
+        print(f"API Error: {e}")
+    except Exception as e:
+        print(f"Unexpected Error: {e}")
+
+if __name__ == '__main__':
+    test_wb_api()