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src/Jiaowu.Api/Domain/Academic/GradeEntities.cs

@@ -139,6 +139,39 @@ public sealed class CourseGradeStatisticsRefreshJob : EntityBase
     public string? ErrorMessage { get; set; }
 }
 
+/// <summary>
+/// Discussion messages for the grade-analytics centre. Anonymous messages still
+/// retain their author internally, so the author can remove them and academic
+/// administrators can moderate them without exposing the author's identity.
+/// </summary>
+public sealed class GradeAnalyticsComment : EntityBase
+{
+    public Guid CourseId { get; set; }
+    public Guid? ParentCommentId { get; set; }
+    public Guid AuthorUserId { get; set; }
+    public bool IsAnonymous { get; set; }
+    public required string Content { get; set; }
+}
+
+public sealed class GradeAnalyticsCommentReaction : EntityBase
+{
+    public Guid CommentId { get; set; }
+    public Guid UserId { get; set; }
+    public GradeAnalyticsCommentReactionType Type { get; set; }
+}
+
+public enum GradeAnalyticsCommentReactionType
+{
+    Like = 1,
+    Insightful = 2,
+    Agree = 3,
+    Hooray = 4,
+    Heart = 5,
+    Rocket = 6,
+    Eyes = 7,
+    Laugh = 8
+}
+
 /// <summary>
 /// Materialized all-term academic metrics for one student. Rankings are derived
 /// from this compact table, never by scanning raw grade records on a request.