refactor(app): extract dialog component logic to code-behind

src/Duempelkas.App/Components/Dialogs/AddTransferDialog.razor.cs

@@ -0,0 +1,79 @@
+using Duempelkas.App.Services.Models;
+using Microsoft.AspNetCore.Components;
+
+namespace Duempelkas.App.Components.Dialogs;
+
+public partial class AddTransferDialog
+{
+    #region Parameters
+
+    [Parameter]
+    public int SourceAccountId { get; set; }
+
+    [Parameter]
+    public EntryDto? EditEntry { get; set; }
+
+    [Parameter]
+    public EventCallback OnSave { get; set; }
+
+    [Parameter]
+    public EventCallback OnCancel { get; set; }
+
+    #endregion
+
+    #region Fields
+
+    private List<AccountSummaryDto> accounts = new();
+    private int targetAccountId;
+    private DateTime date = DateTime.Today;
+    private string title = string.Empty;
+    private decimal amount;
+
+    #endregion
+
+    #region Properties
+
+    private bool CanSave => targetAccountId > 0 && !string.IsNullOrWhiteSpace(title) && amount > 0;
+
+    #endregion
+
+    #region Lifecycle
+
+    protected override async Task OnParametersSetAsync()
+    {
+        if (!accounts.Any())
+        {
+            accounts = await AccountService.GetAllAccountsAsync();
+        }
+
+        if (EditEntry != null)
+        {
+            targetAccountId = EditEntry.LinkedAccountId ?? 0;
+            date = EditEntry.Date;
+            title = EditEntry.Title;
+            amount = EditEntry.Amount;
+        }
+    }
+
+    #endregion
+
+    #region Actions
+
+    private async Task Save()
+    {
+        if (EditEntry != null)
+        {
+            await EntryService.UpdateTransferAsync(EditEntry.Id, targetAccountId, date, title.Trim(), amount);
+        }
+        else
+        {
+            await EntryService.CreateTransferAsync(SourceAccountId, targetAccountId, date, title.Trim(), amount);
+        }
+
+        await OnSave.InvokeAsync();
+    }
+
+    private async Task Cancel() => await OnCancel.InvokeAsync();
+
+    #endregion
+}