...

Back/Services/ServOrders.cs

@@ -70,5 +70,18 @@ namespace Back.Services
         {
             return await _repoOrder.UpdateAsync(order);
         }
+        public async Task<int> AddOrder(Order order)
+        {
+            try
+            {
+                var item = await _repoOrder.AddAsync(order);
+                return item.ID;
+            }
+            catch (Exception ex)
+            {
+                return -1;
+
+            }
+        }
     }
 }

Back/Services/ServPromotion.cs

@@ -37,5 +37,11 @@ namespace Back.Services
                     }).ToList()
                 }).ToListAsync();
         }
+        public async Task<Promotion> GetByPromotionID(int PromotionID)
+        {
+            return await _repoPromotion.Get(w => w.Status && w.ID == PromotionID)
+               .Include(inc => inc.PromotionDetails).ThenInclude(tinc => tinc.Permission)
+               .FirstOrDefaultAsync();
+        }
     }
 }