[Core] Return seq for SendFriendFile

Author: Linwenxuan04

Lagrange.Core/Common/Interface/MessageExt.cs

@@ -26,7 +26,7 @@ public static Task<List<BotMessage>> GetRoamMessage(this BotContext context, Bot
     public static Task<List<BotMessage>> GetC2CMessage(this BotContext context, long peerUin, uint startSequence, uint endSequence)
         => context.EventContext.GetLogic<MessagingLogic>().GetC2CMessage(peerUin, startSequence, endSequence);
 
-    public static Task<bool> SendFriendFile(this BotContext context, long targetUin, Stream fileStream, string? fileName = null)
+    public static Task<(int Sequence, DateTime Time)> SendFriendFile(this BotContext context, long targetUin, Stream fileStream, string? fileName = null)
         => context.EventContext.GetLogic<OperationLogic>().SendFriendFile(targetUin, fileStream, fileName);
 
     public static Task<string> SendGroupFile(this BotContext context, long groupUin, Stream fileStream, string? fileName = null, string parentDirectory = "/")

Lagrange.Core/Internal/Logic/OperationLogic.cs

@@ -39,7 +39,7 @@ public async Task<string> GroupFSDownload(long groupUin, string fileId)
 
     public async Task GroupFSDelete(long groupUin, string fileId) => await context.EventContext.SendEvent<GroupFSDeleteEventResp>(new GroupFSDeleteEventReq(groupUin, fileId));
 
-    public async Task<bool> SendFriendFile(long targetUin, Stream fileStream, string? fileName)
+    public async Task<(int, DateTime)> SendFriendFile(long targetUin, Stream fileStream, string? fileName)
     {
         fileName = ResolveFileName(fileStream, fileName);
 
@@ -94,15 +94,15 @@ public async Task<bool> SendFriendFile(long targetUin, Stream fileStream, string
             };
 
             bool success = await context.HighwayContext.UploadFile(fileStream, 95, ProtoHelper.Serialize(ext));
-            if (!success) return false;
+            if (!success) throw new OperationException(-1, "File upload failed");
         }
 
         int sequence = Random.Shared.Next(10000, 99999);
         uint random = (uint)Random.Shared.Next();
         var sendResult = await context.EventContext.SendEvent<SendMessageEventResp>(new SendFriendFileEventReq(friend, request, result, sequence, random));
         if (sendResult.Result != 0) throw new OperationException(sendResult.Result);
 
-        return true;
+        return (sequence, DateTimeOffset.FromUnixTimeSeconds(sendResult.SendTime).UtcDateTime);
     }
 
     private static string ResolveFileName(Stream fileStream, string? fileName)