error handling for domain file store upload

COMETwebapp/Components/EngineeringModel/FileStore/FileForm.razor

@@ -54,7 +54,21 @@ Copyright (c) 2023-2024 Starion Group S.A.
 
     </DxFormLayout>
     <div class="pt-3"></div>
-    <ValidationSummary />
+
+    <div class="validation-container mt-3">
+        <ul class="validation-errors">
+            <ValidationSummary/>
+            @if (!this.ViewModel.SelectedFileRevisions.Any())
+            {
+                <li class="validation-message">At least one file revision should exist</li>
+            }
+            @if (!string.IsNullOrWhiteSpace(this.ErrorMessage))
+            {
+                <li class="validation-message">@(this.ErrorMessage)</li>
+            }
+        </ul>
+    </div>
+
     <div class="dxbl-grid-edit-form-buttons">
         <DxButton Id="deleteFileButton"
                   Click="@(() => this.IsDeletePopupVisible = true)"

COMETwebapp/Components/EngineeringModel/FileStore/FileForm.razor.cs

@@ -31,6 +31,8 @@ namespace COMETwebapp.Components.EngineeringModel.FileStore
 
     using System.ComponentModel.DataAnnotations;
 
+    using FluentResults;
+
     /// <summary>
     /// Support class for the <see cref="FileForm"/>
     /// </summary>
@@ -47,14 +49,25 @@ public partial class FileForm : SelectedDataItemForm
         /// </summary>
         public bool IsDeletePopupVisible { get; private set; }
 
+        /// <summary>
+        /// Gets the error message from the <see cref="IFileHandlerViewModel.CreateOrEditFile"/>, if any
+        /// </summary>
+        public string ErrorMessage { get; private set; } = string.Empty;
+
         /// <summary>
         /// Method that is executed when there is a valid submit
         /// </summary>
         /// <returns>A <see cref="Task"/></returns>
         protected override async Task OnValidSubmit()
         {
-            await this.ViewModel.CreateOrEditFile(this.ShouldCreate);
-            await base.OnValidSubmit();
+            this.ErrorMessage = string.Empty;
+            var result = await this.ViewModel.CreateOrEditFile(this.ShouldCreate);
+            this.ErrorMessage = string.Join(", ", result.Reasons.OfType<IExceptionalError>().Select(x => x.Exception.Message));
+
+            if (string.IsNullOrWhiteSpace(this.ErrorMessage))
+            {
+                await base.OnValidSubmit();
+            }
         }
 
         /// <summary>

COMETwebapp/ViewModels/Components/EngineeringModel/FileStore/FileHandler/FileHandlerViewModel.cs

@@ -36,6 +36,8 @@ namespace COMETwebapp.ViewModels.Components.EngineeringModel.FileStore.FileHandl
 
     using COMETwebapp.ViewModels.Components.EngineeringModel.FileStore.FileRevisionHandler;
 
+    using FluentResults;
+
     using Microsoft.AspNetCore.Components;
 
     /// <summary>
@@ -149,8 +151,8 @@ public async Task MoveFile(File file, Folder targetFolder)
         /// Creates or edits a file
         /// </summary>
         /// <param name="shouldCreate">The condition to check if the file should be created</param>
-        /// <returns>A <see cref="Task" /></returns>
-        public async Task CreateOrEditFile(bool shouldCreate)
+        /// <returns>A <see cref="Task"/> containing a <see cref="Result"/></returns>
+        public async Task<Result> CreateOrEditFile(bool shouldCreate)
         {
             this.IsLoading = true;
             this.logger.LogInformation("Creating or editing file");
@@ -193,11 +195,20 @@ public async Task CreateOrEditFile(bool shouldCreate)
             }
 
             thingsToUpdate.Add(this.CurrentThing);
+            var result = await this.SessionService.CreateOrUpdateThings(fileStoreClone, thingsToUpdate, newFileRevisions.Select(x => x.LocalPath).ToList());
 
-            await this.SessionService.CreateOrUpdateThings(fileStoreClone, thingsToUpdate, newFileRevisions.Select(x => x.LocalPath).ToList());
+            if (result.IsSuccess)
+            {
+                this.logger.LogInformation("File with iid {iid} updated successfully", this.CurrentThing.Iid);
+            }
+            else
+            {
+                this.logger.LogWarning("File could not be created. {warning}", string.Join(", ", string.Join(", ", result.Reasons.Select(x => x.Message))));
+            }
 
-            this.logger.LogInformation("File with iid {iid} updated successfully", this.CurrentThing.Iid);
             this.IsLoading = false;
+
+            return result;
         }
 
         /// <summary>

COMETwebapp/ViewModels/Components/EngineeringModel/FileStore/FileHandler/IFileHandlerViewModel.cs

@@ -32,6 +32,8 @@ namespace COMETwebapp.ViewModels.Components.EngineeringModel.FileStore.FileHandl
 
     using COMETwebapp.ViewModels.Components.EngineeringModel.FileStore.FileRevisionHandler;
 
+    using FluentResults;
+
     /// <summary>
     /// View model used to manage the files in Filestores
     /// </summary>
@@ -96,8 +98,8 @@ public interface IFileHandlerViewModel : IApplicationBaseViewModel
         /// Creates a file into a target folder
         /// </summary>
         /// <param name="shouldCreate"></param>
-        /// <returns>A <see cref="Task"/></returns>
-        Task CreateOrEditFile(bool shouldCreate);
+        /// <returns>A <see cref="Task"/> containing a <see cref="Result"/></returns>
+        Task<Result> CreateOrEditFile(bool shouldCreate);
 
         /// <summary>
         /// Deletes the current file

COMETwebapp/wwwroot/css/app.css

@@ -290,4 +290,15 @@ sub {
 
 .model-editor-details {
     flex: 1 1 40% !important;
-}
+}
+
+.validation-container {
+    border: dashed 1px red;
+    padding-top: 1rem;
+    padding-right: 1rem;
+    border-radius: 10px;
+}
+
+    .validation-container:not(:has(li)) {
+        display: none;
+    }