using System; using MongoDB.Bson; using MongoDB.Bson.Serialization.Attributes; namespace GameAuthApi.Models; public class ChatMessage { [BsonId] [BsonRepresentation(BsonType.ObjectId)] public string Id { get; set; } [BsonRepresentation(BsonType.ObjectId)] public string SenderId { get; set; } public string Content { get; set; } public DateTime Timestamp { get; set; } = DateTime.UtcNow; }