#218 - Completed client-side password change.

src/Money.UI.Backend/Commands/Handlers/UserHandler.cs

@@ -38,7 +38,7 @@ public async Task HandleAsync(Envelope<ChangePassword> command)
             IdentityResult result = await userManager.ChangePasswordAsync(user, command.Body.Current, command.Body.New);
             if (!result.Succeeded)
             {
-                var ex = new PasswordChangeFailedException();
+                var ex = new PasswordChangeFailedException(String.Join(Environment.NewLine, result.Errors.Select(e => e.Description)));
                 AggregateRootExceptionDecorator decorator = new AggregateRootExceptionDecorator(ex);
                 decorator.SetCommandKey(command.Body.Key);
                 decorator.SetSourceCommandKey(command.Body.Key);

src/Money.UI.Blazor/Commands/PasswordChangeFailedException.cs

@@ -11,5 +11,19 @@ namespace Money.Commands
     /// An exception raised when user password change fails.
     /// </summary>
     public class PasswordChangeFailedException : AggregateRootException
-    { }
+    {
+        /// <summary>
+        /// Gets a user error message.
+        /// </summary>
+        public string ErrorDescription { get; }
+
+        /// <summary>
+        /// Creates a new instance.
+        /// </summary>
+        /// <param name="errorDescriptions">A user error message.</param>
+        public PasswordChangeFailedException(string errorDescription)
+        {
+            ErrorDescription = errorDescription;
+        }
+    }
 }

src/Money.UI.Blazor/Components/Bootstrap/Alert.cshtml

@@ -80,6 +80,12 @@
 
     protected string ModeCssClass { get; set; }
 
+    protected override void OnInit()
+    {
+        base.OnInit();
+        UpdateModeCssClass();
+    }
+
     protected void UpdateModeCssClass()
     {
         switch (mode)

src/Money.UI.Blazor/Components/ExceptionPanel.cshtml

@@ -42,6 +42,8 @@
                     message = MessageBuilder.CantDeleteDefaultCurrency();
                 else if (e is CantDeleteLastCurrencyException)
                     message = MessageBuilder.CantDeleteLastCurrency();
+                else if (e is PasswordChangeFailedException passwordChangeFailed)
+                    message = MessageBuilder.PasswordChangeFailed(passwordChangeFailed.ErrorDescription);
 
                 Message = message;
             }

src/Money.UI.Blazor/Events/PasswordChanged.cs

@@ -1,5 +1,4 @@
-using Neptuo.Events;
-using Neptuo.Models.Keys;
+using Neptuo.Models.Keys;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -11,10 +10,12 @@ namespace Money.Events
     /// <summary>
     /// An event raised when user password has been changed.
     /// </summary>
-    public class PasswordChanged : Event
+    public class PasswordChanged : UserEvent
     {
-        public PasswordChanged(IKey key, IKey aggregateKey) 
+        public PasswordChanged(IKey key, IKey aggregateKey)
             : base(key, aggregateKey, 0)
-        { }
+        {
+            UserKey = aggregateKey;
+        }
     }
 }

src/Money.UI.Blazor/Pages/User/ChangePassword.cshtml

@@ -4,6 +4,14 @@
 <UserHead />
 
 <div class="user">
+
+    <ExceptionPanel />
+
+    @if (IsSuccess)
+    {
+        <Alert Message="Your password has been changed." Mode="AlertMode.Success" IsDismissible="true" />
+    }
+
     <div class="row">
         <div class="col-md-6">
             <form method="post" onsubmit="@OnFormSubmit">

src/Money.UI.Blazor/Pages/User/ChangePassword.cshtml.cs

@@ -23,6 +23,8 @@ public class ChangePasswordBase : BlazorComponent, IEventHandler<PasswordChanged
         public string New { get; set; }
         public string Confirm { get; set; }
 
+        public bool IsSuccess { get; set; }
+
         protected override Task OnInitAsync()
         {
             BindEvents();
@@ -31,6 +33,8 @@ protected override Task OnInitAsync()
 
         protected async Task OnFormSubmit()
         {
+            IsSuccess = false;
+
             if (!String.IsNullOrEmpty(Current) && !String.IsNullOrEmpty(New) && New == Confirm)
                 await Commands.HandleAsync(new Commands.ChangePassword(Current, New));
         }
@@ -59,6 +63,8 @@ Task IEventHandler<PasswordChanged>.HandleAsync(PasswordChanged payload)
             Current = null;
             New = null;
             Confirm = null;
+            IsSuccess = true;
+            StateHasChanged();
             return Task.CompletedTask;
         }
 

src/Money.UI.Blazor/Services/MessageBuilder.cs

@@ -18,5 +18,7 @@ public class MessageBuilder
         public string CurrencyExchangeRateAlreadyExists() => "Such currency exchange rate already exists.";
         public string OutcomeAlreadyDeleted() => "The outcome is already deleted.";
         public string OutcomeAlreadyHasCategory() => "The outcome already has this category.";
+
+        public string PasswordChangeFailed(string error) => error.Replace(Environment.NewLine, "<br />");
     }
 }

src/Money/Events/UserEvent.cs

@@ -17,5 +17,12 @@ public class UserEvent : Event
         /// Gets a key of the user.
         /// </summary>
         public IKey UserKey { get; /*internal*/ set; }
+
+        public UserEvent()
+        { }
+
+        public UserEvent(IKey key, IKey aggregateKey, int version) 
+            : base(key, aggregateKey, version)
+        { }
     }
 }