feat: Implement GraphQL mutations and service for dashboard and widget management (#162)

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>

Author: PhantomDave

PhantomDave.BankTracking.Api/Types/Inputs/AddWidgetInput.cs

@@ -10,7 +10,4 @@ public sealed class AddWidgetInput
     public int Y { get; init; }
     public int Rows { get; init; }
     public int Cols { get; init; }
-    public string? Title { get; init; }
-    public string? Subtitle { get; init; }
-    public string? Config { get; init; }
 }

PhantomDave.BankTracking.Api/Types/Inputs/UpdateWidgetInput.cs

@@ -10,7 +10,4 @@ public sealed class UpdateWidgetInput
     public int? Y { get; init; }
     public int? Rows { get; init; }
     public int? Cols { get; init; }
-    public string? Title { get; init; }
-    public string? Subtitle { get; init; }
-    public string? Config { get; init; }
 }

PhantomDave.BankTracking.Api/Types/Mutations/DashboardWidgetMutations.cs

@@ -38,20 +38,14 @@ public async Task<DashboardWidgetType> AddWidget(
                     .Build());
         }
 
-        var title = ValidateAndTrimString(input.Title, "title");
-        var subtitle = ValidateAndTrimString(input.Subtitle, "subtitle");
-
         var widget = new DashboardWidget
         {
             DashboardId = input.DashboardId,
             Type = input.Type,
             X = Math.Max(0, input.X),
             Y = Math.Max(0, input.Y),
             Rows = input.Rows,
-            Cols = input.Cols,
-            Title = title,
-            Subtitle = subtitle,
-            Config = input.Config
+            Cols = input.Cols
         };
 
         await unitOfWork.DashboardWidgets.AddAsync(widget);
@@ -131,21 +125,6 @@ public async Task<DashboardWidgetType> UpdateWidget(
             widget.Cols = input.Cols.Value;
         }
 
-        if (input.Title is not null)
-        {
-            widget.Title = ValidateAndTrimString(input.Title, "title");
-        }
-
-        if (input.Subtitle is not null)
-        {
-            widget.Subtitle = ValidateAndTrimString(input.Subtitle, "subtitle");
-        }
-
-        if (input.Config is not null)
-        {
-            widget.Config = input.Config;
-        }
-
         await unitOfWork.DashboardWidgets.UpdateAsync(widget);
         await unitOfWork.SaveChangesAsync();
 
@@ -185,20 +164,4 @@ public async Task<bool> RemoveWidget(
 
         return true;
     }
-
-    private static string? ValidateAndTrimString(string? value, string fieldName)
-    {
-        if (value is null) return null;
-
-        var trimmed = value.Trim();
-        if (string.IsNullOrEmpty(trimmed))
-        {
-            throw new GraphQLException(
-                ErrorBuilder.New()
-                    .SetMessage($"Widget {fieldName} cannot be empty or whitespace.")
-                    .SetCode("BAD_USER_INPUT")
-                    .Build());
-        }
-        return trimmed;
-    }
 }

PhantomDave.BankTracking.Api/Types/ObjectTypes/DashboardWidgetType.cs

@@ -6,9 +6,6 @@ public class DashboardWidgetType
 {
     public int Id { get; set; }
     public WidgetType WidgetType { get; set; }
-    public string? Title { get; set; }
-    public string? Subtitle { get; set; }
-    public string? Config { get; set; }
     public int Cols { get; set; }
     public int Rows { get; set; }
     public int X { get; set; }
@@ -20,9 +17,6 @@ public static DashboardWidgetType FromDashboardWidget(DashboardWidget widget)
         {
             Id = widget.Id,
             WidgetType = widget.Type,
-            Title = widget.Title,
-            Subtitle = widget.Subtitle,
-            Config = widget.Config,
             Cols = widget.Cols,
             Rows = widget.Rows,
             X = widget.X,