first test-flight version

Billing.Shared/Views/AccountPage.xaml.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using Billing.Languages;
 using Billing.Models;
 using Billing.UI;
 using Xamarin.Forms;
@@ -20,6 +21,7 @@ namespace Billing.Views
         public List<AccountGrouping> Accounts => (List<AccountGrouping>)GetValue(AccountsProperty);
 
         public Command EditAccount { get; }
+        public Command DeleteAccount { get; }
 
         private readonly List<AccountGrouping> accounts = new();
         private bool initialized;
@@ -27,6 +29,7 @@ namespace Billing.Views
         public AccountPage()
         {
             EditAccount = new Command(OnEditAccount);
+            DeleteAccount = new Command(OnDeleteAccount);
             SetValue(AccountsProperty, accounts);
 
             InitializeComponent();
@@ -34,7 +37,7 @@ namespace Billing.Views
 
         protected override void OnAppearing()
         {
-            if (!initialized)
+            if (!initialized || accounts.Count == 0)
             {
                 initialized = true;
                 accounts.Clear();
@@ -52,6 +55,12 @@ namespace Billing.Views
                 }
             }
             groupLayout.Refresh(accounts);
+            RefreshBalance();
+        }
+
+        private void RefreshBalance()
+        {
+            SetValue(BalanceProperty, App.Accounts.Sum(a => a.Balance));
         }
 
         private void AddToAccountGroup(Account account)
@@ -94,6 +103,35 @@ namespace Billing.Views
             }
         }
 
+        private async void OnDeleteAccount(object o)
+        {
+            if (Tap.IsBusy)
+            {
+                return;
+            }
+            using (Tap.Start())
+            {
+                if (o is Account account)
+                {
+                    var result = await this.ShowConfirm(Resource.ConfirmDeleteAccount);
+                    if (result)
+                    {
+                        var group = accounts.FirstOrDefault(a => a.Key == account.Category);
+                        if (group == null)
+                        {
+                            Helper.Error("account.delete", "unexpected deleting account, cannot find the current category");
+                            return;
+                        }
+                        group.Remove(account);
+                        groupLayout.Refresh(accounts);
+                        RefreshBalance();
+
+                        _ = Task.Run(App.WriteAccounts);
+                    }
+                }
+            }
+        }
+
         private void AccountChecked(object sender, AccountEventArgs e)
         {
             if (e.Account.Id < 0)
@@ -102,6 +140,7 @@ namespace Billing.Views
                 AddToAccountGroup(e.Account);
             }
             groupLayout.Refresh(accounts);
+            RefreshBalance();
 
             Task.Run(App.WriteAccounts);
         }