♻️ Move most of models to the Shared package

DysonNetwork.Shared/Models/Message.cs

@@ -0,0 +1,65 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Text.Json.Serialization;
+using NodaTime;
+
+namespace DysonNetwork.Shared.Models;
+
+public class Message : ModelBase, IIdentifiedResource
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    [MaxLength(1024)] public string Type { get; set; } = null!;
+    [MaxLength(4096)] public string? Content { get; set; }
+    [Column(TypeName = "jsonb")] public Dictionary<string, object>? Meta { get; set; }
+    [Column(TypeName = "jsonb")] public List<Guid>? MembersMentioned { get; set; }
+    [MaxLength(36)] public string Nonce { get; set; } = null!;
+    public Instant? EditedAt { get; set; }
+    
+    [Column(TypeName = "jsonb")] public List<CloudFileReferenceObject> Attachments { get; set; } = []; 
+
+    // Outdated fields, keep for backward compability
+    public ICollection<CloudFile> OutdatedAttachments { get; set; } = new List<CloudFile>();
+    public ICollection<MessageReaction> Reactions { get; set; } = new List<MessageReaction>();
+
+    public Guid? RepliedMessageId { get; set; }
+    public Message? RepliedMessage { get; set; }
+    public Guid? ForwardedMessageId { get; set; }
+    public Message? ForwardedMessage { get; set; }
+
+    public Guid SenderId { get; set; }
+    public ChatMember Sender { get; set; } = null!;
+    public Guid ChatRoomId { get; set; }
+    [JsonIgnore] public ChatRoom ChatRoom { get; set; } = null!;
+
+    public string ResourceIdentifier => $"message/{Id}";
+}
+
+public enum MessageReactionAttitude
+{
+    Positive,
+    Neutral,
+    Negative,
+}
+
+public class MessageReaction : ModelBase
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid MessageId { get; set; }
+    [JsonIgnore] public Message Message { get; set; } = null!;
+    public Guid SenderId { get; set; }
+    public ChatMember Sender { get; set; } = null!;
+
+    [MaxLength(256)] public string Symbol { get; set; } = null!;
+    public MessageReactionAttitude Attitude { get; set; }
+}
+
+/// <summary>
+/// The data model for updating the last read at field for chat member,
+/// after the refactor of the unread system, this no longer stored in the database.
+/// Not only used for the data transmission object
+/// </summary>
+[NotMapped]
+public class MessageReadReceipt
+{
+    public Guid SenderId { get; set; }
+}