мл

src/Telegram2VkBot/Program.cs

@@ -1,5 +1,5 @@
-using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
 
 namespace Telegram2VkBot;
 
@@ -13,10 +13,11 @@ public static class Program
         builder.Services.Configure<VkOptions>(builder.Configuration.GetSection("VK"));
         builder.Services.Configure<DbOptions>(builder.Configuration.GetSection("DB"));
 
-        builder.Services.AddHttpClient<VkApiClient>(client =>
+        builder.Services.AddHttpClient(VkApiClient.UploadHttpClientName, client =>
         {
             client.Timeout = TimeSpan.FromSeconds(60);
         });
+        builder.Services.AddSingleton<VkApiClient>();
         builder.Services.AddSingleton<MappingRepository>();
 
         builder.Services.AddHostedService<ForwardWorker>();

src/Telegram2VkBot/Telegram2VkBot.csproj

@@ -14,6 +14,7 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
     <PackageReference Include="Telegram.Bot" Version="22.9.5.3" />
+    <PackageReference Include="VkNet" Version="1.78.0" />
   </ItemGroup>
 </Project>
 

src/Telegram2VkBot/VkApiClient.cs

@@ -1,49 +1,78 @@
+using System.Globalization;
 using System.Net.Http.Headers;
-using System.Text;
-using System.Text.Json;
+using System.Text.RegularExpressions;
 using Microsoft.Extensions.Options;
+using VkNet;
+using VkNet.Exception;
+using VkNet.Model;
 
 namespace Telegram2VkBot;
 
-public sealed class VkApiClient
+public sealed class VkApiClient : IDisposable
 {
-    private const string VkApiBaseUrl = "https://api.vk.com/method/";
+    public const string UploadHttpClientName = "VkUpload";
     private const int LogParamMaxLength = 240;
     private const int LogBodyMaxLength = 8192;
+    private const string MultipartBoundary = "-------0988";
 
     private readonly VkOptions _options;
-    private readonly HttpClient _http;
-    private readonly JsonSerializerOptions _json;
+    private readonly IHttpClientFactory _httpFactory;
     private readonly ILogger<VkApiClient> _logger;
+    private readonly VkApi _api;
 
-    public VkApiClient(IOptions<VkOptions> options, HttpClient http, ILogger<VkApiClient> logger)
+    public VkApiClient(
+        IOptions<VkOptions> options,
+        IHttpClientFactory httpFactory,
+        ILogger<VkApiClient> logger)
     {
         _options = options.Value;
-        _http = http;
+        _httpFactory = httpFactory;
         _logger = logger;
-        _json = new JsonSerializerOptions(JsonSerializerDefaults.Web);
+        _api = new VkApi();
+        ApplyApiVersion(_options.ApiVersion);
+        _api.Authorize(new ApiAuthParams
+        {
+            AccessToken = _options.AccessToken,
+        });
     }
 
+    public void Dispose() => _api.Dispose();
+
     public async Task<int> WallPostAsync(
         long ownerId,
         string message,
         string? attachments,
         CancellationToken ct)
     {
-        var parameters = new Dictionary<string, string>
+        var wallParams = new WallPostParams
         {
-            ["owner_id"] = ownerId.ToString(),
-            ["message"] = message ?? string.Empty,
+            OwnerId = ownerId,
+            FromGroup = true,
+            Message = message ?? string.Empty,
         };
 
-        if (!string.IsNullOrWhiteSpace(attachments))
-        {
-            parameters["attachments"] = attachments;
-        }
+        var media = ParsePhotoAttachments(attachments);
+        if (media != null)
+            wallParams.Attachments = media;
 
-        var response = await CallMethodAsync("wall.post", parameters, ct);
-        // response: { "post_id": 123 }
-        return response.GetProperty("post_id").GetInt32();
+        _logger.LogInformation(
+            "VkNet Wall.Post request: OwnerId={OwnerId}, FromGroup=true, MessageLen={MessageLen}, MessagePreview={MessagePreview}, Attachments={Attachments}",
+            ownerId,
+            wallParams.Message.Length,
+            TruncateForLog(wallParams.Message, 200),
+            attachments ?? "(none)");
+
+        try
+        {
+            var postId = await _api.Wall.PostAsync(wallParams, ct).ConfigureAwait(false);
+            _logger.LogInformation("VkNet Wall.Post response: post_id={PostId}", postId);
+            return postId > int.MaxValue ? throw new InvalidOperationException($"post_id слишком большой для хранения: {postId}") : (int)postId;
+        }
+        catch (VkApiException ex)
+        {
+            _logger.LogError(ex, "VkNet Wall.Post failed (VK code {ErrorCode}): {Message}", ex.ErrorCode, ex.Message);
+            throw;
+        }
     }
 
     public async Task WallEditAsync(
@@ -53,189 +82,144 @@ public sealed class VkApiClient
         string? attachments,
         CancellationToken ct)
     {
-        var parameters = new Dictionary<string, string>
+        var editParams = new WallEditParams
         {
-            ["owner_id"] = ownerId.ToString(),
-            ["post_id"] = postId.ToString(),
-            ["message"] = message ?? string.Empty,
+            OwnerId = ownerId,
+            PostId = postId,
+            Message = message ?? string.Empty,
         };
 
-        if (!string.IsNullOrWhiteSpace(attachments))
-        {
-            parameters["attachments"] = attachments;
-        }
+        var mediaEdit = ParsePhotoAttachments(attachments);
+        if (mediaEdit != null)
+            editParams.Attachments = mediaEdit;
 
-        // response: 1
-        await CallMethodAsync("wall.edit", parameters, ct);
+        _logger.LogInformation(
+            "VkNet Wall.Edit request: OwnerId={OwnerId}, PostId={PostId}, MessageLen={MessageLen}, MessagePreview={MessagePreview}, Attachments={Attachments}",
+            ownerId,
+            postId,
+            editParams.Message.Length,
+            TruncateForLog(editParams.Message, 200),
+            attachments ?? "(none)");
+
+        try
+        {
+            await _api.Wall.EditAsync(editParams, ct).ConfigureAwait(false);
+            _logger.LogInformation("VkNet Wall.Edit completed for post_id={PostId}", postId);
+        }
+        catch (VkApiException ex)
+        {
+            _logger.LogError(ex, "VkNet Wall.Edit failed (VK code {ErrorCode}): {Message}", ex.ErrorCode, ex.Message);
+            throw;
+        }
     }
 
     public async Task<string?> UploadPhotoAndGetAttachmentAsync(
         byte[] photoBytes,
         CancellationToken ct)
     {
-        // 1) photos.getUploadServer
-        var uploadServerResponse = await CallMethodAsync(
-            "photos.getUploadServer",
-            new Dictionary<string, string>
-            {
-                ["group_id"] = _options.GroupId.ToString(),
-            },
-            ct);
+        var groupId = _options.GroupId;
+        var groupIdUlong = groupId > 0 ? (ulong)groupId : throw new ArgumentOutOfRangeException(nameof(groupId));
 
-        var uploadUrl = uploadServerResponse.GetProperty("upload_url").GetString();
+        var uploadServer = await _api.Photo.GetWallUploadServerAsync(groupId, ct).ConfigureAwait(false);
+        var uploadUrl = uploadServer.UploadUrl;
         if (string.IsNullOrWhiteSpace(uploadUrl))
         {
-            _logger.LogWarning("VK upload_url is empty");
+            _logger.LogWarning("VK GetWallUploadServer: UploadUrl пуст");
             return null;
         }
 
-        // 2) Upload bytes to upload_url (VK expects multipart form with field name 'photo')
-        using var form = new MultipartFormDataContent();
-        var byteContent = new ByteArrayContent(photoBytes);
-        byteContent.Headers.ContentType = new MediaTypeHeaderValue("image/jpeg");
-        form.Add(byteContent, "photo", "photo.jpg");
-
         _logger.LogInformation(
-            "VK upload → POST multipart (photo.jpg, {Size} bytes) to {UploadUrl}",
+            "VK upload → POST multipart ({FileName}, {Size} bytes) to {UploadUrl}",
+            "photo.jpg",
             photoBytes.Length,
             TruncateForLog(uploadUrl, 512));
 
-        using var uploadResp = await _http.PostAsync(uploadUrl, form, ct);
-        var uploadRespText = await uploadResp.Content.ReadAsStringAsync(ct);
+        using var form = new MultipartFormDataContent(MultipartBoundary);
+        var bytes = new ByteArrayContent(photoBytes);
+        bytes.Headers.ContentType = new MediaTypeHeaderValue("image/jpeg");
+        form.Add(bytes, "photo", $"{Guid.NewGuid():N}.jpg");
+
+        var http = _httpFactory.CreateClient(UploadHttpClientName);
+        using var uploadResp = await http.PostAsync(uploadUrl, form, ct).ConfigureAwait(false);
+        var result = await uploadResp.Content.ReadAsStringAsync(ct).ConfigureAwait(false);
+
         _logger.LogInformation(
             "VK upload ← HTTP {StatusCode}, body: {Body}",
             (int)uploadResp.StatusCode,
-            TruncateForLog(uploadRespText, LogBodyMaxLength));
+            TruncateForLog(result, LogBodyMaxLength));
 
         if (!uploadResp.IsSuccessStatusCode)
         {
-            _logger.LogWarning("VK upload failed: {StatusCode} {Body}", uploadResp.StatusCode, uploadRespText);
+            _logger.LogWarning("VK upload failed: {StatusCode} {Body}", uploadResp.StatusCode, TruncateForLog(result, LogBodyMaxLength));
             return null;
         }
 
-        using var uploadDoc = JsonDocument.Parse(uploadRespText);
-        // upload response: { server, photo, hash, ... }
-        var server = uploadDoc.RootElement.GetProperty("server").GetString() ?? "";
-        var photo = uploadDoc.RootElement.GetProperty("photo").GetString() ?? "";
-        var hash = uploadDoc.RootElement.GetProperty("hash").GetString() ?? "";
-
-        // 3) photos.saveWallPhoto
-        var saved = await CallMethodAsync(
-            "photos.saveWallPhoto",
-            new Dictionary<string, string>
+        IReadOnlyCollection<Photo> saved;
+        try
         {
-                ["group_id"] = _options.GroupId.ToString(),
-                ["server"] = server,
-                ["photo"] = photo,
-                ["hash"] = hash,
-            },
-            ct);
-
-        // saved response usually: { "photos": [ { "id": ..., "owner_id": ... } ] }
-        if (saved.TryGetProperty("photos", out var photos) && photos.GetArrayLength() > 0)
+            saved = await _api.Photo.SaveWallPhotoAsync(
+                    response: result,
+                    userId: 0,
+                    groupId: groupIdUlong,
+                    caption: null,
+                    token: ct)
+                .ConfigureAwait(false);
+        }
+        catch (VkApiException ex)
         {
-            var first = photos[0];
-            var ownerId = first.GetProperty("owner_id").GetInt32();
-            var id = first.GetProperty("id").GetInt32();
-            return $"photo{ownerId}_{id}";
+            _logger.LogError(ex, "VkNet Photo.SaveWallPhotoAsync failed (VK code {ErrorCode}): {Message}", ex.ErrorCode, ex.Message);
+            throw;
         }
 
-        _logger.LogWarning("VK photos.saveWallPhoto response has no photos array");
+        var photo = saved.FirstOrDefault();
+        if (photo == null)
+        {
+            _logger.LogWarning("VkNet SaveWallPhoto: пустой результат");
             return null;
         }
 
-    private async Task<JsonElement> CallMethodAsync(
-        string method,
-        IReadOnlyDictionary<string, string> parameters,
-        CancellationToken ct)
-    {
-        var query = new Dictionary<string, string>(parameters)
-        {
-            ["access_token"] = _options.AccessToken,
-            ["v"] = _options.ApiVersion,
-        };
-
-        var requestUrl = VkApiBaseUrl + method;
-        _logger.LogInformation(
-            "VK API → POST {Url}, form: {Form}",
-            requestUrl,
-            FormatFormForLog(query));
-
-        using var content = new FormUrlEncodedContent(query);
-        using var resp = await _http.PostAsync(requestUrl, content, ct);
-        var body = await resp.Content.ReadAsStringAsync(ct);
-        var bodyForLog = TruncateForLog(body, LogBodyMaxLength);
-
-        _logger.LogInformation(
-            "VK API ← {Method}: HTTP {StatusCode}, body: {Body}",
-            method,
-            (int)resp.StatusCode,
-            bodyForLog);
-
-        if (!resp.IsSuccessStatusCode)
-        {
-            _logger.LogError(
-                "VK API HTTP error for {Method}: {StatusCode}, body: {Body}",
-                method,
-                (int)resp.StatusCode,
-                bodyForLog);
-            throw new InvalidOperationException($"VK API HTTP error: {(int)resp.StatusCode} {body}");
+        var attachment = $"photo{photo.OwnerId}_{photo.Id}";
+        _logger.LogInformation("VkNet SaveWallPhoto response: {Attachment}", attachment);
+        return attachment;
     }
 
-        using var doc = JsonDocument.Parse(body);
-        var root = doc.RootElement;
+    private static readonly Regex PhotoAttachmentRegex = new(@"^photo(-?\d+)_(\d+)$", RegexOptions.Compiled | RegexOptions.CultureInvariant);
 
-        if (root.TryGetProperty("error", out var error))
+    /// <summary>
+    /// VkNet ожидает коллекцию <see cref="MediaAttachment"/>; строка из БД вида photo-123_456 парсится в <see cref="Photo"/>.
+    /// </summary>
+    private static IEnumerable<MediaAttachment>? ParsePhotoAttachments(string? attachments)
     {
-            var message = error.TryGetProperty("error_msg", out var em) ? em.GetString() : null;
-            var code = error.TryGetProperty("error_code", out var ec) ? ec.ToString() : null;
-            _logger.LogError(
-                "VK API error body for {Method}: {Body}",
-                method,
-                bodyForLog);
-            throw new InvalidOperationException($"VK API error: code={code} msg={message}");
+        if (string.IsNullOrWhiteSpace(attachments))
+            return null;
+
+        var parts = attachments.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+        var list = new List<MediaAttachment>(parts.Length);
+        foreach (var part in parts)
+        {
+            var m = PhotoAttachmentRegex.Match(part);
+            if (!m.Success)
+                throw new InvalidOperationException($"Неподдерживаемый формат вложения для VkNet (ожидается photo{{owner}}_{{id}}): {part}");
+
+            list.Add(new Photo
+            {
+                OwnerId = long.Parse(m.Groups[1].ValueSpan, CultureInfo.InvariantCulture),
+                Id = long.Parse(m.Groups[2].ValueSpan, CultureInfo.InvariantCulture),
+            });
         }
 
-        if (!root.TryGetProperty("response", out var response))
-        {
-            throw new InvalidOperationException($"VK API unexpected response: {body}");
+        return list;
     }
 
-        var responsePayload = response.GetRawText();
-        _logger.LogDebug("VK API response.extracted for {Method}: {Payload}", method, TruncateForLog(responsePayload, LogBodyMaxLength));
-
-        // Return detached element by cloning to avoid disposing doc
-        return JsonDocument.Parse(responsePayload).RootElement.Clone();
-    }
-
-    private string FormatFormForLog(IReadOnlyDictionary<string, string> form)
+    private void ApplyApiVersion(string version)
     {
-        var sb = new StringBuilder(capacity: Math.Min(512, form.Count * 32));
-        var first = true;
-        foreach (var (key, value) in form.OrderBy(static kv => kv.Key, StringComparer.Ordinal))
+        var parts = version.Trim().Split('.', 2, StringSplitOptions.RemoveEmptyEntries);
+        if (parts.Length == 2
+            && int.TryParse(parts[0], System.Globalization.NumberStyles.Integer, null, out var major)
+            && int.TryParse(parts[1], System.Globalization.NumberStyles.Integer, null, out var minor))
         {
-            if (!first)
-                sb.Append("; ");
-            first = false;
-            sb.Append(key);
-            sb.Append('=');
-            sb.Append(key.Equals("access_token", StringComparison.OrdinalIgnoreCase)
-                ? "***"
-                : SanitizeParamForLog(key, value));
+            _api.VkApiVersion.SetVersion(major, minor);
         }
-
-        return sb.ToString();
-    }
-
-    private string SanitizeParamForLog(string key, string value)
-    {
-        if (value.Length <= LogParamMaxLength)
-            return value;
-
-        // VK передаёт поле photo как длинную строка; message тоже может быть огромным.
-        var previewLen = Math.Min(120, LogParamMaxLength);
-        var head = value[..previewLen];
-        return $"{head}…(truncated, len={value.Length}, key={key})";
     }
 
     private static string TruncateForLog(string? text, int maxLen)
@@ -247,4 +231,3 @@ public sealed class VkApiClient
         return string.Concat(text.AsSpan(0, maxLen), "…(truncated, totalLen=", text.Length.ToString(), ")");
     }
 }
-