only initialize courses in directories that exist

Management/Services/Files/FileStorageManager.cs

@@ -21,46 +21,16 @@ public class FileStorageManager
     _basePath = FileConfiguration.GetBasePath();
 
     this.logger.Log("Using storage directory: " + _basePath);
-    
+
   }
-
-  // public string CourseToYaml(LocalCourse course)
-  // {
-  //   var serializer = new SerializerBuilder().DisableAliases().Build();
-
-  //   var yaml = serializer.Serialize(course);
-
-  //   return yaml;
-  // }
-
-  // public LocalCourse ParseCourse(string rawCourse)
-  // {
-  //   var deserializer = new DeserializerBuilder().IgnoreUnmatchedProperties().Build();
-
-  //   var course = deserializer.Deserialize<LocalCourse>(rawCourse);
-  //   return course;
-  // }
-
   public async Task SaveCourseAsync(LocalCourse course)
   {
-    // var courseString = CourseToYaml(course);
-    // await File.WriteAllTextAsync($"{_basePath}/{course.Settings.Name}.yml", courseString);
-
     await _saveMarkdownCourse.Save(course);
   }
 
 
   public async Task<IEnumerable<LocalCourse>> LoadSavedCourses()
   {
-
-    // var fileNames = Directory.GetFiles(_basePath);
-
-    // var courses = await Task.WhenAll(
-    //   fileNames
-    //     .Where(name => name.EndsWith(".yml"))
-    //     .Select(async n => ParseCourse(await File.ReadAllTextAsync(n)))
-    // );
-    // return courses;
     return await LoadSavedMarkdownCourses();
   }
 
@@ -69,4 +39,15 @@ public class FileStorageManager
     return await _courseMarkdownLoader.LoadSavedMarkdownCourses();
   }
 
+  public async Task<IEnumerable<string>> GetEmptyDirectories()
+  {
+    if(!Directory.Exists(_basePath))
+      throw new DirectoryNotFoundException($"Cannot get empty directories,  {_basePath} does not exist");
+        
+    return Directory
+      .GetDirectories(_basePath, "*")
+      .Where(dir => !Directory.EnumerateFileSystemEntries(dir).Any())
+      .ToArray();
+
+  }
 }

Management/Services/Files/LoadMarkdownCourse.cs

@@ -17,7 +17,13 @@ public class CourseMarkdownLoader
     var courseDirectories = Directory.GetDirectories(_basePath);
 
     var courses = await Task.WhenAll(
-      courseDirectories.Select(async n => await LoadCourseByPath(n))
+      courseDirectories
+        .Where(d =>
+        {
+          var settingsPath = $"{d}/settings.yml";
+          return File.Exists(settingsPath);
+        })
+        .Select(async d => await LoadCourseByPath(d))
     );
     return courses;
   }
@@ -31,10 +37,13 @@ public class CourseMarkdownLoader
       throw new LoadCourseFromFileException(errorMessage);
     }
 
+
+
     LocalCourseSettings settings = await loadCourseSettings(courseDirectory);
     var modules = await loadCourseModules(courseDirectory);
 
-    return new() {
+    return new()
+    {
       Settings = settings,
       Modules = modules
     };