get_group_msg_history_seq

Lagrange.OneBot/Core/Entity/Message/OneBotGroupMsg.cs

@@ -4,7 +4,7 @@
 namespace Lagrange.OneBot.Core.Entity.Message;
 
 [Serializable]
-public class OneBotGroupMsg(uint selfId, uint groupUin, List<OneBotSegment> message, string rawMessage, BotGroupMember member, int messageId , uint appid) : OneBotEntityBase(selfId, "message")
+public class OneBotGroupMsg(uint selfId, uint groupUin, List<OneBotSegment> message, string rawMessage, BotGroupMember member, int messageId, uint appid, int seq) : OneBotEntityBase(selfId, "message")
 {
     [JsonPropertyName("message_type")] public string MessageType { get; set; } = "group";
 
@@ -14,10 +14,12 @@ public class OneBotGroupMsg(uint selfId, uint groupUin, List<OneBotSegment> mess
 
     [JsonPropertyName("message_id")] public int MessageId { get; set; } = messageId;
 
+    [JsonPropertyName("message_seq")] public int MessageSeq { get; set; } = seq;
+
     [JsonPropertyName("group_id")] public uint GroupId { get; set; } = groupUin;
-    
+
     [JsonPropertyName("user_id")] public uint UserId { get; set; } = member.Uin;
-    
+
     [JsonPropertyName("anonymous")] public object? Anonymous { get; set; } = null;
 
     [JsonPropertyName("message")] public List<OneBotSegment> Message { get; set; } = message;
@@ -30,7 +32,7 @@ public class OneBotGroupMsg(uint selfId, uint groupUin, List<OneBotSegment> mess
 }
 
 [Serializable]
-public class OneBotGroupStringMsg(uint selfId, uint groupUin, string message, BotGroupMember member, int messageId, uint appid) : OneBotEntityBase(selfId, "message")
+public class OneBotGroupStringMsg(uint selfId, uint groupUin, string message, BotGroupMember member, int messageId, uint appid, int seq) : OneBotEntityBase(selfId, "message")
 {
     [JsonPropertyName("message_type")] public string MessageType { get; set; } = "group";
 
@@ -40,12 +42,14 @@ public class OneBotGroupStringMsg(uint selfId, uint groupUin, string message, Bo
 
     [JsonPropertyName("message_id")] public int MessageId { get; set; } = messageId;
 
+    [JsonPropertyName("message_seq")] public int MessageSeq { get; set; } = seq;
+
     [JsonPropertyName("group_id")] public uint GroupId { get; set; } = groupUin;
-    
+
     [JsonPropertyName("user_id")] public uint UserId { get; set; } = member.Uin;
-    
+
     [JsonPropertyName("anonymous")] public object? Anonymous { get; set; } = null;
-    
+
     [JsonPropertyName("message")] public string Message { get; set; } = message;
 
     [JsonPropertyName("raw_message")] public string RawMessage { get; set; } = message;

Lagrange.OneBot/Core/Entity/Message/OneBotGroupMsgHistorySeq.cs

@@ -0,0 +1,14 @@
+using System.Text.Json.Serialization;
+
+namespace Lagrange.OneBot.Core.Entity.Message;
+
+[Serializable]
+public class OneBotGroupMsgHistorySeq
+{
+    [JsonPropertyName("group_id")] public uint GroupId { get; set; }
+
+    [JsonPropertyName("start")] public int Start { get; set; }
+
+    [JsonPropertyName("end")] public int End { get; set; }
+
+}

Lagrange.OneBot/Core/Operation/Message/GetGroupMessageHistorySeqOperation.cs

@@ -0,0 +1,33 @@
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using Lagrange.Core;
+using Lagrange.Core.Common.Interface.Api;
+using Lagrange.Core.Message;
+using Lagrange.OneBot.Core.Entity.Action;
+using Lagrange.OneBot.Core.Entity.Message;
+using Lagrange.OneBot.Core.Operation.Converters;
+using Lagrange.OneBot.Database;
+using Lagrange.OneBot.Message;
+using LiteDB;
+
+namespace Lagrange.OneBot.Core.Operation.Message;
+
+[Operation("get_group_msg_history_seq")]
+public class GetGroupMessageHistorySeqOperation(MessageService message) : IOperation
+{
+    public async Task<OneBotResult> HandleOperation(BotContext context, JsonNode? payload)
+    {
+        if (payload.Deserialize<OneBotGroupMsgHistorySeq>(SerializerOptions.DefaultOptions) is { } history)
+        {
+            if (await context.GetGroupMessage(history.GroupId, (uint)history.Start, (uint)(history.End == 0 ? history.Start : history.End)) is { } results)
+            {
+                var messages = results
+                    .Select(x => message.ConvertToGroupMsg(context.BotUin, x))
+                    .ToList();
+                return new OneBotResult(new OneBotGroupMsgHistoryResponse(messages), 0, "ok");
+            }
+        }
+
+        throw new Exception();
+    }
+}

Lagrange.OneBot/Message/MessageService.cs

@@ -109,7 +109,7 @@ private void OnGroupMessageReceived(BotContext bot, GroupMessageEvent e)
 
         _ = _service.SendJsonAsync(request);
     }
-    
+
     private void OnGroupProMessageReceived(BotContext bot, GroupProMessageEvent e)
     {
         var request = ConvertToGroupMsg(bot.BotUin, e.Chain);
@@ -121,8 +121,8 @@ public object ConvertToGroupMsg(uint uin, MessageChain chain)
         var segments = Convert(chain);
         int hash = MessageRecord.CalcMessageHash(chain.MessageId, chain.Sequence);
         object request = _stringPost
-            ? new OneBotGroupStringMsg(uin, chain.GroupUin ?? 0, ToRawMessage(segments), chain.GroupMemberInfo ?? throw new Exception("Group member not found"), hash, chain.Appid)
-            : new OneBotGroupMsg(uin, chain.GroupUin ?? 0, segments, ToRawMessage(segments), chain.GroupMemberInfo ?? throw new Exception("Group member not found"), hash, chain.Appid);
+            ? new OneBotGroupStringMsg(uin, chain.GroupUin ?? 0, ToRawMessage(segments), chain.GroupMemberInfo ?? throw new Exception("Group member not found"), hash, chain.Appid, (int)chain.Sequence)
+            : new OneBotGroupMsg(uin, chain.GroupUin ?? 0, segments, ToRawMessage(segments), chain.GroupMemberInfo ?? throw new Exception("Group member not found"), hash, chain.Appid, (int)chain.Sequence);
         return request;
     }