| 1 | using System.Diagnostics; |
| 2 | using System.Text.Json; |
| 3 | using AgentClientProtocol; |
| 4 | |
| 5 | namespace CascadeIDE.Services.CursorAcp; |
| 6 | |
| 7 | /// <summary>stdio-процесс Cursor agent + <see cref="ClientSideConnection"/>: один сеанс ACP на жизненный цикл подключения.</summary> |
| 8 | public sealed class CursorAcpChatConnection : IDisposable |
| 9 | { |
| 10 | private readonly CursorAcpIdeClient _client = new(); |
| 11 | private Action<string>? _appendTerminalUi; |
| 12 | private Action? _showTerminalPanel; |
| 13 | private Process? _process; |
| 14 | private ClientSideConnection? _connection; |
| 15 | private string? _sessionId; |
| 16 | private string? _cachedWorkspaceRoot; |
| 17 | private string? _cachedCmdPath; |
| 18 | private string? _cachedExternalMcpJson; |
| 19 | private bool _cachedAcpAutoInjectIdeMcp = true; |
| 20 | private string? _cachedProcessPathForMcp; |
| 21 | private string? _cachedPreferredCursorAcpModelId; |
| 22 | private string? _lastAppliedPreferredCursorAcpModelId; |
| 23 | private SessionModelState? _lastSessionModels; |
| 24 | |
| 25 | public bool IsDisposed { get; private set; } |
| 26 | |
| 27 | /// <summary>Снимок <c>session/new</c> (модели), обновляется при новой сессии.</summary> |
| 28 | public SessionModelState? LastSessionModels => _lastSessionModels; |
| 29 | |
| 30 | /// <summary>Зеркалирование вывода ACP-терминала в нижнюю панель (и опционально показ вкладки Terminal).</summary> |
| 31 | public void SetIdeTerminalCallbacks(Action<string>? appendTerminalUi, Action? showTerminalPanel) |
| 32 | { |
| 33 | _appendTerminalUi = appendTerminalUi; |
| 34 | _showTerminalPanel = showTerminalPanel; |
| 35 | } |
| 36 | |
| 37 | public async Task PromptAsync( |
| 38 | string workspaceRoot, |
| 39 | string configuredAgentPath, |
| 40 | string externalMcpServersJson, |
| 41 | bool acpAutoInjectIdeMcp, |
| 42 | string? preferredCursorAcpModelId, |
| 43 | string userText, |
| 44 | Action<string>? appendMessageChunk, |
| 45 | Action<string>? appendThoughtChunk, |
| 46 | Action<CursorAcpStreamStage>? onStage, |
| 47 | Action<SessionModelState?>? onSessionModels, |
| 48 | CancellationToken cancellationToken) |
| 49 | { |
| 50 | ObjectDisposedException.ThrowIf(IsDisposed, this); |
| 51 | if (!CursorAcpAgentPath.TryResolve(configuredAgentPath, out var cmdPath, out var workDir)) |
| 52 | throw new InvalidOperationException( |
| 53 | "Укажи путь к cursor-agent.cmd/каталогу dist-package в настройках или добавь cursor-agent в PATH."); |
| 54 | |
| 55 | if (string.IsNullOrWhiteSpace(workspaceRoot)) |
| 56 | workspaceRoot = workDir; |
| 57 | |
| 58 | workspaceRoot = CanonicalFilePath.Normalize(workspaceRoot); |
| 59 | await EnsureSessionAsync( |
| 60 | workspaceRoot, |
| 61 | cmdPath, |
| 62 | workDir, |
| 63 | externalMcpServersJson, |
| 64 | acpAutoInjectIdeMcp, |
| 65 | preferredCursorAcpModelId, |
| 66 | onSessionModels, |
| 67 | cancellationToken).ConfigureAwait(false); |
| 68 | |
| 69 | if (_connection is null || string.IsNullOrEmpty(_sessionId)) |
| 70 | throw new InvalidOperationException("ACP: нет активной сессии."); |
| 71 | |
| 72 | _client.SetChunkHandlers(appendMessageChunk, appendThoughtChunk, onStage); |
| 73 | try |
| 74 | { |
| 75 | await _connection.PromptAsync(new PromptRequest |
| 76 | { |
| 77 | SessionId = _sessionId, |
| 78 | Prompt = [new TextContentBlock { Text = userText }], |
| 79 | }, cancellationToken).ConfigureAwait(false); |
| 80 | } |
| 81 | finally |
| 82 | { |
| 83 | _client.SetChunkHandlers(null, null, null); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | private async Task EnsureSessionAsync( |
| 88 | string workspaceRoot, |
| 89 | string cmdPath, |
| 90 | string agentWorkingDirectory, |
| 91 | string externalMcpServersJson, |
| 92 | bool acpAutoInjectIdeMcp, |
| 93 | string? preferredCursorAcpModelId, |
| 94 | Action<SessionModelState?>? onSessionModels, |
| 95 | CancellationToken cancellationToken) |
| 96 | { |
| 97 | var mcpJson = externalMcpServersJson ?? ""; |
| 98 | var processPath = Environment.ProcessPath ?? ""; |
| 99 | var pref = preferredCursorAcpModelId?.Trim() ?? ""; |
| 100 | _cachedPreferredCursorAcpModelId = pref; |
| 101 | |
| 102 | if (_connection is not null |
| 103 | && _process is { HasExited: false } |
| 104 | && !string.IsNullOrEmpty(_sessionId) |
| 105 | && string.Equals(_cachedWorkspaceRoot, workspaceRoot, StringComparison.OrdinalIgnoreCase) |
| 106 | && string.Equals(_cachedCmdPath, cmdPath, StringComparison.OrdinalIgnoreCase) |
| 107 | && string.Equals(_cachedExternalMcpJson, mcpJson, StringComparison.Ordinal) |
| 108 | && _cachedAcpAutoInjectIdeMcp == acpAutoInjectIdeMcp |
| 109 | && string.Equals(_cachedProcessPathForMcp, processPath, StringComparison.OrdinalIgnoreCase)) |
| 110 | { |
| 111 | await TryApplyPreferredModelAndNotifyAsync(pref, onSessionModels, cancellationToken).ConfigureAwait(false); |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | DisposeProcessAndConnection(); |
| 116 | _cachedWorkspaceRoot = workspaceRoot; |
| 117 | _cachedCmdPath = cmdPath; |
| 118 | _cachedExternalMcpJson = mcpJson; |
| 119 | _cachedAcpAutoInjectIdeMcp = acpAutoInjectIdeMcp; |
| 120 | _cachedProcessPathForMcp = processPath; |
| 121 | |
| 122 | _process = CursorAcpChatAgentProcess.Start( |
| 123 | cmdPath, |
| 124 | agentWorkingDirectory, |
| 125 | line => Debug.WriteLine("[cursor-acp stderr] " + line)); |
| 126 | |
| 127 | _connection = new ClientSideConnection(_ => _client, _process.StandardOutput, _process.StandardInput); |
| 128 | _connection.Open(); |
| 129 | |
| 130 | _client.SetTerminalCallbacks(_appendTerminalUi, _showTerminalPanel, workspaceRoot); |
| 131 | |
| 132 | await _connection.InitializeAsync(new InitializeRequest |
| 133 | { |
| 134 | ProtocolVersion = 1, |
| 135 | ClientInfo = new Implementation { Name = "CascadeIDE", Version = typeof(CursorAcpChatConnection).Assembly.GetName().Version?.ToString() ?? "0" }, |
| 136 | ClientCapabilities = new ClientCapabilities |
| 137 | { |
| 138 | Fs = new FileSystemCapability { ReadTextFile = true, WriteTextFile = true }, |
| 139 | Terminal = true, |
| 140 | }, |
| 141 | }, cancellationToken).ConfigureAwait(false); |
| 142 | |
| 143 | var mcpServers = CascadeAcpMcpServerCatalog.MergeForAcpNewSession(mcpJson, acpAutoInjectIdeMcp); |
| 144 | var sessionResult = await _connection.NewSessionAsync(new NewSessionRequest |
| 145 | { |
| 146 | Cwd = workspaceRoot, |
| 147 | McpServers = mcpServers, |
| 148 | }, cancellationToken).ConfigureAwait(false); |
| 149 | |
| 150 | _sessionId = sessionResult.SessionId; |
| 151 | _lastSessionModels = sessionResult.Models; |
| 152 | _client.SetExpectedSessionId(_sessionId); |
| 153 | _client.ConfigureWorkspaceRoot(workspaceRoot); |
| 154 | await TryApplyPreferredModelAndNotifyAsync(pref, onSessionModels, cancellationToken).ConfigureAwait(false); |
| 155 | } |
| 156 | |
| 157 | /// <summary>Выбор модели после <c>session/new</c> (например из UI).</summary> |
| 158 | public async Task<bool> TrySetSessionModelAsync(string modelId, CancellationToken cancellationToken = default) |
| 159 | { |
| 160 | ObjectDisposedException.ThrowIf(IsDisposed, this); |
| 161 | if (_connection is null || string.IsNullOrEmpty(_sessionId) || string.IsNullOrWhiteSpace(modelId)) |
| 162 | return false; |
| 163 | |
| 164 | await _connection.SetSessionModelAsync( |
| 165 | new SetSessionModelRequest { SessionId = _sessionId, ModelId = modelId.Trim() }, |
| 166 | cancellationToken).ConfigureAwait(false); |
| 167 | _lastAppliedPreferredCursorAcpModelId = modelId.Trim(); |
| 168 | return true; |
| 169 | } |
| 170 | |
| 171 | private async Task TryApplyPreferredModelAndNotifyAsync( |
| 172 | string preferredModelId, |
| 173 | Action<SessionModelState?>? onSessionModels, |
| 174 | CancellationToken cancellationToken) |
| 175 | { |
| 176 | if (_connection is null || string.IsNullOrEmpty(_sessionId)) |
| 177 | return; |
| 178 | |
| 179 | if (string.IsNullOrEmpty(preferredModelId)) |
| 180 | { |
| 181 | onSessionModels?.Invoke(_lastSessionModels); |
| 182 | return; |
| 183 | } |
| 184 | |
| 185 | if (string.Equals(_lastAppliedPreferredCursorAcpModelId, preferredModelId, StringComparison.Ordinal)) |
| 186 | { |
| 187 | onSessionModels?.Invoke(_lastSessionModels); |
| 188 | return; |
| 189 | } |
| 190 | |
| 191 | if (_lastSessionModels?.AvailableModels is not { Length: > 0 } list |
| 192 | || !list.Any(m => string.Equals(m.ModelId, preferredModelId, StringComparison.Ordinal))) |
| 193 | { |
| 194 | onSessionModels?.Invoke(_lastSessionModels); |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | try |
| 199 | { |
| 200 | await _connection.SetSessionModelAsync( |
| 201 | new SetSessionModelRequest { SessionId = _sessionId, ModelId = preferredModelId }, |
| 202 | cancellationToken).ConfigureAwait(false); |
| 203 | _lastAppliedPreferredCursorAcpModelId = preferredModelId; |
| 204 | } |
| 205 | catch |
| 206 | { |
| 207 | // оставляем сессию; UI может сменить модель вручную |
| 208 | } |
| 209 | |
| 210 | onSessionModels?.Invoke(_lastSessionModels); |
| 211 | } |
| 212 | |
| 213 | private void DisposeProcessAndConnection() |
| 214 | { |
| 215 | _client.DisposeTerminalSessions(); |
| 216 | try |
| 217 | { |
| 218 | _connection?.Dispose(); |
| 219 | } |
| 220 | catch |
| 221 | { |
| 222 | // ignore |
| 223 | } |
| 224 | |
| 225 | _connection = null; |
| 226 | _sessionId = null; |
| 227 | _cachedExternalMcpJson = null; |
| 228 | _lastSessionModels = null; |
| 229 | _lastAppliedPreferredCursorAcpModelId = null; |
| 230 | |
| 231 | try |
| 232 | { |
| 233 | if (_process is { HasExited: false }) |
| 234 | { |
| 235 | _process.Kill(entireProcessTree: true); |
| 236 | _process.WaitForExit(5000); |
| 237 | } |
| 238 | } |
| 239 | catch |
| 240 | { |
| 241 | // ignore |
| 242 | } |
| 243 | |
| 244 | try |
| 245 | { |
| 246 | _process?.Dispose(); |
| 247 | } |
| 248 | catch |
| 249 | { |
| 250 | // ignore |
| 251 | } |
| 252 | |
| 253 | _process = null; |
| 254 | } |
| 255 | |
| 256 | public void Dispose() |
| 257 | { |
| 258 | if (IsDisposed) |
| 259 | return; |
| 260 | IsDisposed = true; |
| 261 | _client.SetChunkHandlers(null, null, null); |
| 262 | DisposeProcessAndConnection(); |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | internal sealed class CursorAcpIdeClient : IAcpClient |
| 267 | { |
| 268 | private string _workspaceRoot = ""; |
| 269 | private Action<string>? _messageChunk; |
| 270 | private Action<string>? _thoughtChunk; |
| 271 | private Action<CursorAcpStreamStage>? _onStage; |
| 272 | private AcpTerminalHost? _terminalHost; |
| 273 | |
| 274 | public void ConfigureWorkspaceRoot(string workspaceRoot) => |
| 275 | _workspaceRoot = CanonicalFilePath.Normalize(workspaceRoot.Trim()); |
| 276 | |
| 277 | public void SetChunkHandlers( |
| 278 | Action<string>? messageChunk, |
| 279 | Action<string>? thoughtChunk, |
| 280 | Action<CursorAcpStreamStage>? onStage) |
| 281 | { |
| 282 | _messageChunk = messageChunk; |
| 283 | _thoughtChunk = thoughtChunk; |
| 284 | _onStage = onStage; |
| 285 | } |
| 286 | |
| 287 | public void SetTerminalCallbacks(Action<string>? appendUi, Action? showTerminalPanel, string workspaceRoot) => |
| 288 | _terminalHost = new AcpTerminalHost(workspaceRoot, appendUi, showTerminalPanel); |
| 289 | |
| 290 | public void SetExpectedSessionId(string sessionId) => |
| 291 | _terminalHost?.SetExpectedSessionId(sessionId); |
| 292 | |
| 293 | public void DisposeTerminalSessions() |
| 294 | { |
| 295 | _terminalHost?.DisposeAllSessions(); |
| 296 | _terminalHost = null; |
| 297 | } |
| 298 | |
| 299 | public ValueTask<RequestPermissionResponse> RequestPermissionAsync( |
| 300 | RequestPermissionRequest request, |
| 301 | CancellationToken cancellationToken = default) |
| 302 | { |
| 303 | if (request.Options is not { Length: > 0 }) |
| 304 | { |
| 305 | return ValueTask.FromResult(new RequestPermissionResponse |
| 306 | { |
| 307 | Outcome = new CancelledRequestPermissionOutcome(), |
| 308 | }); |
| 309 | } |
| 310 | |
| 311 | PermissionOption? pick = null; |
| 312 | foreach (var o in request.Options) |
| 313 | { |
| 314 | if (o.Kind is PermissionOptionKind.AllowOnce or PermissionOptionKind.AllowAlways) |
| 315 | { |
| 316 | pick = o; |
| 317 | break; |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | pick ??= request.Options[0]; |
| 322 | |
| 323 | return ValueTask.FromResult(new RequestPermissionResponse |
| 324 | { |
| 325 | Outcome = new SelectedRequestPermissionOutcome |
| 326 | { |
| 327 | OptionId = pick.OptionId, |
| 328 | }, |
| 329 | }); |
| 330 | } |
| 331 | |
| 332 | public ValueTask SessionNotificationAsync(SessionNotification notification, CancellationToken cancellationToken = default) |
| 333 | { |
| 334 | var update = notification.Update; |
| 335 | switch (update) |
| 336 | { |
| 337 | case AgentMessageChunkSessionUpdate m when m.Content is TextContentBlock text: |
| 338 | _onStage?.Invoke(CursorAcpStreamStage.MessageChunk); |
| 339 | _messageChunk?.Invoke(text.Text); |
| 340 | break; |
| 341 | case AgentThoughtChunkSessionUpdate th when th.Content is TextContentBlock tt: |
| 342 | _onStage?.Invoke(CursorAcpStreamStage.ThoughtChunk); |
| 343 | _thoughtChunk?.Invoke(tt.Text); |
| 344 | break; |
| 345 | } |
| 346 | |
| 347 | return ValueTask.CompletedTask; |
| 348 | } |
| 349 | |
| 350 | public ValueTask<WriteTextFileResponse> WriteTextFileAsync(WriteTextFileRequest request, CancellationToken cancellationToken = default) |
| 351 | { |
| 352 | CursorAcpWorkspaceFileAccess.WriteTextFileUnderWorkspace(_workspaceRoot, request.Path, request.Content); |
| 353 | return ValueTask.FromResult(new WriteTextFileResponse()); |
| 354 | } |
| 355 | |
| 356 | public ValueTask<ReadTextFileResponse> ReadTextFileAsync(ReadTextFileRequest request, CancellationToken cancellationToken = default) |
| 357 | { |
| 358 | var text = CursorAcpWorkspaceFileAccess.ReadTextFileOrEmpty(_workspaceRoot, request.Path); |
| 359 | return ValueTask.FromResult(new ReadTextFileResponse { Content = text }); |
| 360 | } |
| 361 | |
| 362 | public ValueTask<CreateTerminalResponse> CreateTerminalAsync(CreateTerminalRequest request, CancellationToken cancellationToken = default) |
| 363 | { |
| 364 | _onStage?.Invoke(CursorAcpStreamStage.ToolCall); |
| 365 | if (_terminalHost is null) |
| 366 | throw new InvalidOperationException("ACP terminal: хост не инициализирован."); |
| 367 | return ValueTask.FromResult(_terminalHost.Create(request)); |
| 368 | } |
| 369 | |
| 370 | public ValueTask<TerminalOutputResponse> TerminalOutputAsync(TerminalOutputRequest request, CancellationToken cancellationToken = default) |
| 371 | { |
| 372 | _onStage?.Invoke(CursorAcpStreamStage.ToolCall); |
| 373 | if (_terminalHost is null) |
| 374 | { |
| 375 | return ValueTask.FromResult(new TerminalOutputResponse |
| 376 | { |
| 377 | Output = "", |
| 378 | Truncated = false, |
| 379 | }); |
| 380 | } |
| 381 | |
| 382 | return ValueTask.FromResult(_terminalHost.ReadOutput(request)); |
| 383 | } |
| 384 | |
| 385 | public ValueTask<ReleaseTerminalResponse> ReleaseTerminalAsync(ReleaseTerminalRequest request, CancellationToken cancellationToken = default) |
| 386 | { |
| 387 | if (_terminalHost is null) |
| 388 | return ValueTask.FromResult(new ReleaseTerminalResponse()); |
| 389 | return ValueTask.FromResult(_terminalHost.Release(request)); |
| 390 | } |
| 391 | |
| 392 | public async ValueTask<WaitForTerminalExitResponse> WaitForTerminalExitAsync( |
| 393 | WaitForTerminalExitRequest request, |
| 394 | CancellationToken cancellationToken = default) |
| 395 | { |
| 396 | _onStage?.Invoke(CursorAcpStreamStage.ToolCall); |
| 397 | if (_terminalHost is null) |
| 398 | return new WaitForTerminalExitResponse(); |
| 399 | return await _terminalHost.WaitForExitAsync(request, cancellationToken).ConfigureAwait(false); |
| 400 | } |
| 401 | |
| 402 | public ValueTask<KillTerminalCommandResponse> KillTerminalCommandAsync(KillTerminalCommandRequest request, CancellationToken cancellationToken = default) |
| 403 | { |
| 404 | _onStage?.Invoke(CursorAcpStreamStage.ToolCall); |
| 405 | if (_terminalHost is null) |
| 406 | return ValueTask.FromResult(new KillTerminalCommandResponse()); |
| 407 | return ValueTask.FromResult(_terminalHost.Kill(request)); |
| 408 | } |
| 409 | |
| 410 | public ValueTask<JsonElement> ExtMethodAsync(string method, JsonElement request, CancellationToken cancellationToken = default) |
| 411 | => ValueTask.FromResult(JsonSerializer.SerializeToElement(new { })); |
| 412 | |
| 413 | public ValueTask ExtNotificationAsync(string method, JsonElement notification, CancellationToken cancellationToken = default) |
| 414 | => ValueTask.CompletedTask; |
| 415 | } |
| 416 | |
| 417 | public enum CursorAcpStreamStage |
| 418 | { |
| 419 | ThoughtChunk = 0, |
| 420 | MessageChunk = 1, |
| 421 | ToolCall = 2 |
| 422 | } |
| 423 | |