Refactor. Add data layer

BudgetApp/Components/Layout/NavMenu.razor.cs

@@ -0,0 +1,43 @@
+using BudgetApp.Data.Entities;
+
+namespace BudgetApp.Components.Layout;
+
+public partial class NavMenu
+{
+    private List<Account>? _accounts;
+
+    protected override async Task OnInitializedAsync()
+    {
+        AppState.OnAccountsChanged += HandleAccountsChanged;
+
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        var userId = authState.User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+
+        if (userId is not null)
+        {
+            _accounts = await AccountService.GetAccountsAsync(userId);
+        }
+    }
+
+    private async void HandleAccountsChanged()
+    {
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        var userId = authState.User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+
+        if (userId is not null)
+        {
+            _accounts = await AccountService.GetAccountsAsync(userId);
+            await InvokeAsync(StateHasChanged);
+        }
+    }
+
+    public void Dispose()
+    {
+        AppState.OnAccountsChanged -= HandleAccountsChanged;
+    }
+
+    private void NavigateToAccounts()
+    {
+        Navigation.NavigateTo("accounts");
+    }
+}