tests allow for pages to be stored and retrieved

Management/Models/Local/LocalCoursePage.cs

@@ -2,7 +2,45 @@ namespace LocalModels;
 
 public record LocalCoursePage
 {
-  public required string Title { get; init; }
+  public required string Name { get; init; }
   public required string Text { get; set; }
   public DateTime? DueDateForOrdering { get; init; }
+
+  public string ToMarkdown()
+  {
+    var printableDueDate = DueDateForOrdering.ToString()?.Replace('\u202F', ' ');
+    var settingsMarkdown = $"Name: {Name}\n"
+      + $"DueDateForOrdering: {printableDueDate}\n"
+      + "---\n";
+    return settingsMarkdown + Text;
+  }
+  public static LocalCoursePage ParseMarkdown(string pageMarkdown)
+  {
+    var rawSettings = pageMarkdown.Split("---")[0];
+    var name = MarkdownUtils.ExtractLabelValue(rawSettings, "Name");
+    var rawDate = MarkdownUtils.ExtractLabelValue(rawSettings, "DueDateForOrdering");
+
+    DateTime? parsedDate = DateTime.TryParse(rawDate, out DateTime parsedDueAt)
+      ? parsedDueAt
+      : null;
+
+
+    var text = pageMarkdown.Split("---\n")[1];
+
+    return new LocalCoursePage
+    {
+      Name = name,
+      DueDateForOrdering = parsedDate,
+      Text = text
+    };
+  }
+}
+
+
+public class LocalPageMarkdownParseException : Exception
+{
+  public LocalPageMarkdownParseException(string message) : base(message)
+  {
+
+  }
 }