add transaction - expenses details assets

README.md

@@ -97,6 +97,12 @@ It's like having a digital wallet for all financial needs! 💲💲💲
   <img src="assets/expenses_dark.jpg" alt="logo" width="300"/>
 </div>
 
+### Transactions (Expenses - Details)
+<div align="left">
+  <img src="assets/expenses_details_light.jpg" alt="logo" width="300"/>
+  <img src="assets/expenses_details_dark.jpg" alt="logo" width="300"/>
+</div>
+
 ### Transactions (New Expense)
 <div align="left">
   <img src="assets/new_expense_light.jpg" alt="logo" width="300"/>

src/Dollet.Presentation/Maui/ViewModels/Transactions/Expenses/EditExpensePageViewModel.cs

@@ -18,7 +18,8 @@ public partial class EditExpensePageViewModel(IUnitOfWork unitOfWork) : Observab
         private int id;
 
         [ObservableProperty]
-        decimal _amount;
+        [NotifyCanExecuteChangedFor(nameof(EditExpenseCommand))]
+        decimal? _amount;
 
         [ObservableProperty]
         Account _selectedAccount;
@@ -68,12 +69,12 @@ async Task Appearing()
                 SelectedCategory = Categories[categoryIndex];
         }
 
-        [RelayCommand]
+        [RelayCommand(CanExecute = nameof(CanEditExpense))]
         async Task EditExpense()
         {
             var selectedAccount = Accounts.FirstOrDefault(x => x.Id == SelectedAccount.Id);
 
-            var difference = Amount - initialAmount;
+            var difference = (Amount ?? 0) - initialAmount;
 
             if (difference > 0)
                 selectedAccount.Amount -= difference;            
@@ -82,8 +83,8 @@ async Task EditExpense()
 
             var expense = await _unitOfWork.ExpensesRepository.GetAsync(id);
 
-            expense.Amount = Amount;
-            //expense.Account = selectedAccount;
+            expense.Amount = Amount.Value;
+            expense.Account = selectedAccount;
             expense.Category = SelectedCategory;
             expense.Date = Date;
             expense.Comment = Comment;
@@ -105,5 +106,7 @@ await Toast
 
             await Shell.Current.GoToAsync("..", true, navigationParameter);
         }
+
+        bool CanEditExpense() => Amount.HasValue;
     }
 }