[OneBot] Implemented upload_private_file

Author: Linwenxuan04

Lagrange.OneBot/Entity/Action/OneBotUploadPrivateFile.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+
+namespace Lagrange.OneBot.Entity.Action;
+
+[Serializable]
+public class OneBotUploadPrivateFile
+{
+    [JsonPropertyName("user_id")] public long UserId { get; set; }
+
+    [JsonPropertyName("file")] public string File { get; set; } = string.Empty;
+
+    [JsonPropertyName("name")] public string? Name { get; set; }
+}

Lagrange.OneBot/Entity/OneBotSerializerContext.cs

@@ -47,6 +47,7 @@ namespace Lagrange.OneBot.Entity;
 [JsonSerializable(typeof(OneBotMessage))]
 [JsonSerializable(typeof(OneBotMessageResponse))]
 [JsonSerializable(typeof(OneBotQrCodeRequest))]
+[JsonSerializable(typeof(OneBotUploadPrivateFile))]
 public partial class OneBotSerializerContext : JsonSerializerContext;
 
 public class BooleanConverter : JsonConverter<bool>

Lagrange.OneBot/Operation/Message/SendPrivateFileOperation.cs

@@ -0,0 +1,31 @@
+using System.Text.Json.Nodes;
+using Lagrange.Core;
+using Lagrange.Core.Common.Interface;
+using Lagrange.OneBot.Entity.Action;
+using Lagrange.OneBot.Utility;
+
+namespace Lagrange.OneBot.Operation.Message;
+
+[Operation("upload_private_file")]
+public class SendPrivateFileOperation : IOperation
+{
+    public async Task<OneBotResult> HandleOperation(BotContext context, JsonNode? payload)
+    {
+        if (payload.Deserialize<OneBotUploadPrivateFile>() is not { } file) throw new Exception();
+
+        var stream = new FileStream(file.File, FileMode.Open);
+        try
+        {
+            await context.SendFriendFile(file.UserId, stream, file.Name);
+            return new OneBotResult(null, 200, "ok");
+        }
+        catch (Exception e)
+        {
+            return new OneBotResult(e.Message, 521, "error");
+        }
+        finally
+        {
+            await stream.DisposeAsync();
+        }
+    }
+}