implemented get api for eligible bill items

app/wallet/controllers/wallet_router.py

@@ -52,7 +52,7 @@ router = APIRouter(
 # Read APIs - Wallet Information
 # ────────────────────────────────────────────────────────────────────────────────
 @router.get(
-    "/wallet/eligible-bill-items",
+    "/eligible-bill-items",
     response_model=List[EligibleBillItemResponseSchema]
 )
 async def get_eligible_bill_items(
@@ -60,7 +60,7 @@ async def get_eligible_bill_items(
 ):
     return await WalletService.get_eligible_bill_items(
         merchant_id=current_user.merchant_id,
-        staff_id=current_user.user_id
+        user_id=current_user.user_id
     )
 
 @router.get("/summary/{staff_id}", response_model=WalletSummarySchema)

app/wallet/schemas/wallet_schema.py

@@ -37,9 +37,9 @@ class EligibleBillItemResponseSchema(BaseModel):
     sale_id: UUID
     bill_number: str
     sale_date: datetime
-    item_id: UUID
+    sale_item_id: UUID
     item_name: str
-    quantity: int
+    qty: int
     amount: float
     staff_id: UUID
 

app/wallet/services/wallet_service.py

@@ -29,25 +29,52 @@ logger = get_logger(__name__)
 
 class WalletService:
     """Service class for staff wallet operations."""
+    @staticmethod
+    async def get_staff_id_by_user(
+        session,
+        merchant_id: UUID,
+        user_id: UUID
+    ) -> UUID | None:
+        result = await session.execute(
+            text("""
+                SELECT staff_id
+                FROM trans.pos_staff_ref
+                WHERE merchant_id = :merchant_id
+                AND user_id = :user_id
+            """),
+            {
+                "merchant_id": str(merchant_id),
+                "user_id": str(user_id)
+            }
+        )
+
+        row = result.first()  
+
+        if not row:
+            return None        
+
+        return row.staff_id
+
 
     @staticmethod
     async def get_eligible_bill_items(
         merchant_id: UUID,
-        staff_id: UUID
+        user_id: UUID
     ) -> List[dict]:
-        """
-        Get eligible bill items for wallet scan screen
-        - Today's bills
-        - Staff tagged items
-        - Not yet claimed
-        """
         async with get_postgres_session() as session:
+            staff_id = await WalletService.get_staff_id_by_user(
+                session=session,
+                merchant_id=merchant_id,
+                user_id=user_id
+            )
+            if not staff_id:
+                return [] 
             result = await session.execute(
                 text("""
                     SELECT
                         s.sale_id,
                         s.sale_code AS bill_number,
-                        s.created_at As sale_date,
+                        s.created_at AS sale_date,
                         si.sale_item_id,
                         si.item_name,
                         si.qty,