FACULTATE-HEALTHCARE_MANAGER/backend/Core/Entities/Chat.cs

using MongoDB.Bson;
using MongoDB.Bson.Serialization.Attributes;

namespace Core.Entities
{
    public class Chat
    {
        [BsonId]
        [BsonRepresentation(BsonType.String)]
        public Guid Id { get; set; }

        public Guid PatientId { get; set; }
        public Guid DoctorId { get; set; }

        public List<Message> Messages { get; set; } = new List<Message>();
    }

    public class Message
    {
        [BsonRepresentation(BsonType.String)]
        public Guid UserId { get; set; }

        public string Content { get; set; }
    }
}