file interface

Management/Features/Configuration/CoursePlanner.cs

@@ -15,7 +15,7 @@ namespace Management.Planner;
 public class CoursePlanner
 {
   private readonly MyLogger<CoursePlanner> logger;
-  private readonly FileStorageManager fileStorageManager;
+  private readonly IFileStorageManager fileStorageManager;
   private readonly ICanvasService canvas;
   private readonly ILogger<CoursePlanner> _otherLogger;
 
@@ -23,7 +23,7 @@ public class CoursePlanner
 
   public CoursePlanner(
     MyLogger<CoursePlanner> logger,
-    FileStorageManager fileStorageManager,
+    IFileStorageManager fileStorageManager,
     ICanvasService canvas,
     ILogger<CoursePlanner> otherLogger
   )

Management/Services/Files/FileStorageManager.cs

@@ -1,7 +1,15 @@
 using LocalModels;
 using Management.Services;
 
-public class FileStorageManager
+public interface IFileStorageManager
+{
+  Task SaveCourseAsync(LocalCourse course, LocalCourse? previouslyStoredCourse);
+  Task<IEnumerable<LocalCourse>> LoadSavedCourses();
+  Task<IEnumerable<LocalCourse>> LoadSavedMarkdownCourses();
+  IEnumerable<string> GetEmptyDirectories();
+}
+
+public class FileStorageManager : IFileStorageManager
 {
   private readonly MyLogger<FileStorageManager> logger;
   private readonly CourseMarkdownLoader _courseMarkdownLoader;