extracted a lot of canvas interfaces

Management/Features/Configuration/AssignmentEditorContext.cs

@@ -8,12 +8,12 @@ public class AssignmentEditorContext
 {
   public event Action? StateHasChanged;
 
-  public CanvasService canvas { get; }
+  public ICanvasService canvas { get; }
   private CoursePlanner planner { get; }
 
   public AssignmentEditorContext(
     MyLogger<AssignmentEditorContext> logger,
-    CanvasService canvas,
+    ICanvasService canvas,
     CoursePlanner planner
   )
   {

Management/Features/Configuration/CoursePlanner.cs

@@ -16,7 +16,7 @@ public class CoursePlanner
 {
   private readonly MyLogger<CoursePlanner> logger;
   private readonly FileStorageManager fileStorageManager;
-  private readonly CanvasService canvas;
+  private readonly ICanvasService canvas;
   private readonly ILogger<CoursePlanner> _otherLogger;
 
   public bool LoadingCanvasData { get; internal set; } = false;
@@ -24,7 +24,7 @@ public class CoursePlanner
   public CoursePlanner(
     MyLogger<CoursePlanner> logger,
     FileStorageManager fileStorageManager,
-    CanvasService canvas,
+    ICanvasService canvas,
     ILogger<CoursePlanner> otherLogger
   )
   {

Management/Features/Configuration/PageEditorContext.cs

@@ -6,12 +6,12 @@ using Management.Services.Canvas;
 
 public class PageEditorContext(
   CoursePlanner planner,
-  CanvasService canvas,
+  ICanvasService canvas,
   MyLogger<PageEditorContext> logger)
 {
   public event Action? StateHasChanged;
   private CoursePlanner planner { get; } = planner;
-  private CanvasService canvas { get; } = canvas;
+  private ICanvasService canvas { get; } = canvas;
   private readonly MyLogger<PageEditorContext> logger = logger;
 
 

Management/Features/Configuration/QuizEditorContext.cs

@@ -7,12 +7,12 @@ using Management.Services.Canvas;
 
 public class QuizEditorContext(
   CoursePlanner planner,
-  CanvasService canvas,
+  ICanvasService canvas,
   MyLogger<QuizEditorContext> logger)
 {
   public event Action? StateHasChanged;
   private CoursePlanner planner { get; } = planner;
-  private CanvasService canvas { get; } = canvas;
+  private ICanvasService canvas { get; } = canvas;
   private readonly MyLogger<QuizEditorContext> logger = logger;
 
 

Management/Features/Configuration/Synchronization/AssignemntGroupSyncronizationExtensions.cs

@@ -11,7 +11,7 @@ public static partial class AssignmentGroupSyncronizationExtensions
     this LocalCourse localCourse,
     ulong courseCanvasId,
     IEnumerable<CanvasAssignmentGroup> canvasAssignmentGroups,
-    CanvasService canvas
+    ICanvasService canvas
   )
   {
     var canvasAssignmentGroupIds = canvasAssignmentGroups.Select(g => g.Id).ToArray();

Management/Features/Configuration/Synchronization/AssignmentSyncronizationExtensions.cs

@@ -16,7 +16,7 @@ public static partial class AssignmentSyncronizationExtensions
     ulong canvasCourseId,
     LocalAssignment localAssignment,
     IEnumerable<CanvasAssignment> canvasAssignments,
-    CanvasService canvas
+    ICanvasService canvas
   )
   {
     var canvasAssignment = canvasAssignments.FirstOrDefault(
@@ -42,7 +42,7 @@ public static partial class AssignmentSyncronizationExtensions
     ulong canvasCourseId,
     LocalAssignment localAssignment,
     CanvasAssignment canvasAssignment,
-    CanvasService canvas,
+    ICanvasService canvas,
     ulong? canvasAssignmentGroupId
   )
   {

Management/Features/Configuration/Synchronization/ModuleSyncronizationExtensions.cs

@@ -12,7 +12,7 @@ public static partial class ModuleSyncronizationExtensions
   //   this LocalCourse localCourse,
   //   ulong canvasId,
   //   IEnumerable<CanvasModule> canvasModules,
-  //   CanvasService canvas
+  //   ICanvasService canvas
   // )
   // {
   //   var currentCanvasPositions = canvasModules.ToDictionary(m => m.Id, m => m.Position);
@@ -34,7 +34,7 @@ public static partial class ModuleSyncronizationExtensions
     this LocalModule localModule,
     ulong canvasId,
     ulong moduleCanvasId,
-    CanvasService canvas
+    ICanvasService canvas
   )
   {
     var canvasModuleItems = await canvas.Modules.GetModuleItems(canvasId, moduleCanvasId);
@@ -79,7 +79,7 @@ public static partial class ModuleSyncronizationExtensions
     ulong canvasId,
     CanvasModule canvasModule,
     Dictionary<CanvasModule, IEnumerable<CanvasModuleItem>> canvasModulesItems,
-    CanvasService canvas,
+    ICanvasService canvas,
     IEnumerable<CanvasAssignment> canvasAssignments
   )
   {

Management/Features/Configuration/Synchronization/PageSynchronizationExtension.cs

@@ -7,7 +7,7 @@ public static class PageSynchronizationExtension
   public static async Task<CanvasPage?> AddPageToCanvas(
     this LocalCourse localCourse,
     LocalCoursePage localPage,
-    CanvasService canvas
+    ICanvasService canvas
   )
   {
     if (localCourse.Settings.CanvasId == null)

Management/Features/Configuration/Synchronization/QuizSyncronizationExtensions.cs

@@ -17,7 +17,7 @@ public static partial class QuizSyncronizationExtensions
   public static async Task<ulong?> AddQuizToCanvas(
     this LocalCourse localCourse,
     LocalQuiz localQuiz,
-    CanvasService canvas
+    ICanvasService canvas
   )
   {
     if (localCourse.Settings.CanvasId == null)