Code(API::ChatMessage): Add ChatMessage model

src/Server/StellarChat.Server.Api/Models/Chat/ChatMessage.cs

@@ -0,0 +1,33 @@
+namespace StellarChat.Server.Api.Models.Chat;
+
+public class ChatMessage
+{
+    /// <summary>
+    /// Id of the message.
+    /// </summary>
+    public Guid Id { get; set; }
+
+    /// <summary>
+    /// Id of the chat this message belongs to.
+    /// </summary>
+    public Guid ChatId { get; set; }
+    public ChatMessageType Type { get; set; }
+    public string Author { get; set; }
+    public string Content { get; set; }
+    public int TokenCount { get; set; }
+    public DateTimeOffset Timestamp { get; set; }
+
+    public ChatMessage(Guid id, Guid chatId, ChatMessageType type, string author, string content, int tokenCount, DateTimeOffset timestamp)
+    {
+        Id = id;
+        ChatId = chatId;
+        Type = type;
+        Author = author;
+        Content = content;
+        TokenCount = tokenCount;
+        Timestamp = timestamp;
+    }
+
+    public static ChatMessage Create(Guid id, Guid chatId, ChatMessageType type, string author, string content, int tokenCount, DateTimeOffset timestamp)
+        => new(id, chatId, type, author, content, tokenCount, timestamp);
+}

src/Server/StellarChat.Server.Api/Models/Chat/ChatMessageType.cs

@@ -0,0 +1,8 @@
+namespace StellarChat.Server.Api.Models.Chat;
+
+public enum ChatMessageType
+{
+    Message,
+    File,
+}
+

src/Server/StellarChat.Server.Api/StellarChat.Server.Api.csproj

@@ -5,6 +5,7 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <InvariantGlobalization>true</InvariantGlobalization>
+    <UserSecretsId>23f11947-c5c2-4954-80cc-5830f6ae6c16</UserSecretsId>
   </PropertyGroup>
 
   <ItemGroup>