| ... | @@ -1,1566 +0,0 @@ |
| 1 | /** |
| 2 | * CursorAdapterLive - Scoped live implementation for the Cursor ACP provider adapter. |
| 3 | * |
| 4 | * Spawns `agent acp` over stdio, manages JSON-RPC session lifecycle, and maps |
| 5 | * ACP notifications/requests into canonical provider runtime events. |
| 6 | * |
| 7 | * @module CursorAdapterLive |
| 8 | */ |
| 9 | import { randomUUID } from "node:crypto"; |
| 10 | import { spawn, type ChildProcessWithoutNullStreams } from "node:child_process"; |
| 11 | import readline from "node:readline"; |
| 12 | |
| 13 | import { |
| 14 | ApprovalRequestId, |
| 15 | EventId, |
| 16 | type CanonicalItemType, |
| 17 | type CanonicalRequestType, |
| 18 | ProviderItemId, |
| 19 | type ProviderRuntimeEvent, |
| 20 | type ProviderSession, |
| 21 | type ProviderTurnStartResult, |
| 22 | type RuntimeMode, |
| 23 | RuntimeItemId, |
| 24 | RuntimeRequestId, |
| 25 | ThreadId, |
| 26 | TurnId, |
| 27 | } from "@t3tools/contracts"; |
| 28 | import { DateTime, Effect, Layer, Queue, Random, Schema, Stream } from "effect"; |
| 29 | |
| 30 | import { |
| 31 | ProviderAdapterProcessError, |
| 32 | ProviderAdapterRequestError, |
| 33 | ProviderAdapterSessionClosedError, |
| 34 | ProviderAdapterSessionNotFoundError, |
| 35 | ProviderAdapterValidationError, |
| 36 | type ProviderAdapterError, |
| 37 | } from "../Errors.ts"; |
| 38 | import { |
| 39 | CursorAdapter, |
| 40 | type CursorAdapterShape, |
| 41 | CursorAcpInitializeResult, |
| 42 | CursorAcpPermissionRequest, |
| 43 | CursorAcpSessionNewResult, |
| 44 | CursorAcpSessionPromptResult, |
| 45 | CursorAcpSessionUpdateNotification, |
| 46 | } from "../Services/CursorAdapter.ts"; |
| 47 | import { type EventNdjsonLogger, makeEventNdjsonLogger } from "./EventNdjsonLogger.ts"; |
| 48 | |
| 49 | const PROVIDER = "cursor" as const; |
| 50 | const DEFAULT_REQUEST_TIMEOUT_MS = 120_000; |
| 51 | const CURSOR_ACP_PROTOCOL_VERSION = 1; |
| 52 | |
| 53 | interface CursorResumeState { |
| 54 | readonly acpSessionId?: string; |
| 55 | } |
| 56 | |
| 57 | interface PendingRequest { |
| 58 | readonly method: string; |
| 59 | readonly timeout: ReturnType<typeof setTimeout>; |
| 60 | readonly resolve: (value: unknown) => void; |
| 61 | readonly reject: (error: Error) => void; |
| 62 | } |
| 63 | |
| 64 | interface PendingPermission { |
| 65 | readonly jsonRpcId: string | number; |
| 66 | readonly requestType: CanonicalRequestType; |
| 67 | readonly options: ReadonlyArray<{ optionId: string }>; |
| 68 | } |
| 69 | |
| 70 | interface CursorTurnState { |
| 71 | readonly turnId: TurnId; |
| 72 | readonly assistantItemId: ReturnType<typeof ProviderItemId.makeUnsafe>; |
| 73 | readonly startedToolCalls: Set<string>; |
| 74 | readonly toolCalls: Map<string, { itemType: CanonicalItemType; title: string }>; |
| 75 | readonly items: Array<unknown>; |
| 76 | } |
| 77 | |
| 78 | interface CursorSessionContext { |
| 79 | session: ProviderSession; |
| 80 | runtimeMode: RuntimeMode; |
| 81 | readonly child: ChildProcessWithoutNullStreams; |
| 82 | readonly output: readline.Interface; |
| 83 | readonly pending: Map<string, PendingRequest>; |
| 84 | readonly pendingPermissions: Map<ApprovalRequestId, PendingPermission>; |
| 85 | readonly turns: Array<{ |
| 86 | id: TurnId; |
| 87 | items: Array<unknown>; |
| 88 | }>; |
| 89 | turnState: CursorTurnState | undefined; |
| 90 | acpSessionId: string; |
| 91 | nextRpcId: number; |
| 92 | stopping: boolean; |
| 93 | } |
| 94 | |
| 95 | export interface CursorAdapterLiveOptions { |
| 96 | readonly createProcess?: (input: { |
| 97 | readonly binaryPath: string; |
| 98 | readonly cwd: string; |
| 99 | readonly env: NodeJS.ProcessEnv; |
| 100 | readonly model?: string; |
| 101 | }) => ChildProcessWithoutNullStreams; |
| 102 | readonly nativeEventLogPath?: string; |
| 103 | readonly nativeEventLogger?: EventNdjsonLogger; |
| 104 | } |
| 105 | |
| 106 | function toMessage(cause: unknown, fallback: string): string { |
| 107 | if (cause instanceof Error && cause.message.length > 0) { |
| 108 | return cause.message; |
| 109 | } |
| 110 | return fallback; |
| 111 | } |
| 112 | |
| 113 | function asRuntimeItemId(value: string): RuntimeItemId { |
| 114 | return RuntimeItemId.makeUnsafe(value); |
| 115 | } |
| 116 | |
| 117 | function asProviderItemId(value: string): ProviderItemId { |
| 118 | return ProviderItemId.makeUnsafe(value); |
| 119 | } |
| 120 | |
| 121 | function asRuntimeRequestId(value: ApprovalRequestId): RuntimeRequestId { |
| 122 | return RuntimeRequestId.makeUnsafe(value); |
| 123 | } |
| 124 | |
| 125 | function toSessionError( |
| 126 | threadId: ThreadId, |
| 127 | cause: unknown, |
| 128 | ): ProviderAdapterSessionNotFoundError | ProviderAdapterSessionClosedError | undefined { |
| 129 | const normalized = toMessage(cause, "").toLowerCase(); |
| 130 | if (normalized.includes("unknown session") || normalized.includes("not found")) { |
| 131 | return new ProviderAdapterSessionNotFoundError({ |
| 132 | provider: PROVIDER, |
| 133 | threadId, |
| 134 | cause, |
| 135 | }); |
| 136 | } |
| 137 | if (normalized.includes("closed")) { |
| 138 | return new ProviderAdapterSessionClosedError({ |
| 139 | provider: PROVIDER, |
| 140 | threadId, |
| 141 | cause, |
| 142 | }); |
| 143 | } |
| 144 | return undefined; |
| 145 | } |
| 146 | |
| 147 | function toRequestError( |
| 148 | threadId: ThreadId, |
| 149 | method: string, |
| 150 | cause: unknown, |
| 151 | ): ProviderAdapterError { |
| 152 | const sessionError = toSessionError(threadId, cause); |
| 153 | if (sessionError) { |
| 154 | return sessionError; |
| 155 | } |
| 156 | return new ProviderAdapterRequestError({ |
| 157 | provider: PROVIDER, |
| 158 | method, |
| 159 | detail: toMessage(cause, `${method} failed`), |
| 160 | cause, |
| 161 | }); |
| 162 | } |
| 163 | |
| 164 | function asObject(value: unknown): Record<string, unknown> | undefined { |
| 165 | if (!value || typeof value !== "object") { |
| 166 | return undefined; |
| 167 | } |
| 168 | return value as Record<string, unknown>; |
| 169 | } |
| 170 | |
| 171 | function asString(value: unknown): string | undefined { |
| 172 | return typeof value === "string" ? value : undefined; |
| 173 | } |
| 174 | |
| 175 | function normalizeToolItemType(kind: unknown, title: unknown): CanonicalItemType { |
| 176 | const normalizedKind = asString(kind)?.toLowerCase(); |
| 177 | const normalizedTitle = asString(title)?.toLowerCase(); |
| 178 | |
| 179 | if (normalizedKind === "execute") { |
| 180 | return "command_execution"; |
| 181 | } |
| 182 | if (normalizedKind === "edit" || normalizedKind === "write") { |
| 183 | return "file_change"; |
| 184 | } |
| 185 | if (normalizedKind === "mcp") { |
| 186 | return "mcp_tool_call"; |
| 187 | } |
| 188 | if (normalizedTitle?.includes("terminal")) { |
| 189 | return "command_execution"; |
| 190 | } |
| 191 | return "dynamic_tool_call"; |
| 192 | } |
| 193 | |
| 194 | function normalizeRequestType(toolCall: unknown): CanonicalRequestType { |
| 195 | const record = asObject(toolCall); |
| 196 | const kind = asString(record?.kind)?.toLowerCase(); |
| 197 | if (kind === "execute") { |
| 198 | return "command_execution_approval"; |
| 199 | } |
| 200 | if (kind === "edit" || kind === "write") { |
| 201 | return "file_change_approval"; |
| 202 | } |
| 203 | return "unknown"; |
| 204 | } |
| 205 | |
| 206 | function selectCursorPermissionOption( |
| 207 | options: ReadonlyArray<{ optionId: string }>, |
| 208 | decision: "acceptForSession" | "accept" | "decline" | "cancel", |
| 209 | ): string | undefined { |
| 210 | const allowAlways = options.find((option) => option.optionId === "allow-always"); |
| 211 | const allowOnce = options.find((option) => option.optionId === "allow-once"); |
| 212 | const rejectOnce = options.find((option) => option.optionId === "reject-once"); |
| 213 | |
| 214 | if (decision === "acceptForSession") { |
| 215 | return allowAlways?.optionId ?? allowOnce?.optionId; |
| 216 | } |
| 217 | if (decision === "accept") { |
| 218 | return allowOnce?.optionId ?? allowAlways?.optionId; |
| 219 | } |
| 220 | return rejectOnce?.optionId ?? options[0]?.optionId; |
| 221 | } |
| 222 | |
| 223 | function selectCursorAutoApprovalOption( |
| 224 | options: ReadonlyArray<{ optionId: string }>, |
| 225 | ): { optionId: string; decision: "acceptForSession" | "accept" } | undefined { |
| 226 | const allowAlways = options.find((option) => option.optionId === "allow-always"); |
| 227 | if (allowAlways) { |
| 228 | return { |
| 229 | optionId: allowAlways.optionId, |
| 230 | decision: "acceptForSession", |
| 231 | }; |
| 232 | } |
| 233 | const allowOnce = options.find((option) => option.optionId === "allow-once"); |
| 234 | if (allowOnce) { |
| 235 | return { |
| 236 | optionId: allowOnce.optionId, |
| 237 | decision: "accept", |
| 238 | }; |
| 239 | } |
| 240 | return undefined; |
| 241 | } |
| 242 | |
| 243 | function titleForItemType(itemType: CanonicalItemType): string { |
| 244 | switch (itemType) { |
| 245 | case "command_execution": |
| 246 | return "Command run"; |
| 247 | case "file_change": |
| 248 | return "File change"; |
| 249 | case "mcp_tool_call": |
| 250 | return "MCP tool call"; |
| 251 | case "dynamic_tool_call": |
| 252 | return "Tool call"; |
| 253 | default: |
| 254 | return "Item"; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | function summarizeToolOutput(rawOutput: unknown): string | undefined { |
| 259 | const output = asObject(rawOutput); |
| 260 | if (!output) return undefined; |
| 261 | |
| 262 | const stdout = asString(output.stdout); |
| 263 | if (stdout && stdout.trim().length > 0) { |
| 264 | return stdout.trim().slice(0, 400); |
| 265 | } |
| 266 | |
| 267 | const summary = JSON.stringify(output); |
| 268 | return summary.length > 400 ? `${summary.slice(0, 397)}...` : summary; |
| 269 | } |
| 270 | |
| 271 | function mapStopReasonToTurnState( |
| 272 | stopReason: string | undefined, |
| 273 | ): "completed" | "failed" | "interrupted" | "cancelled" { |
| 274 | if (stopReason === "cancelled") return "cancelled"; |
| 275 | if (stopReason === "interrupted") return "interrupted"; |
| 276 | return "completed"; |
| 277 | } |
| 278 | |
| 279 | function readCursorResumeState(resumeCursor: unknown): CursorResumeState | undefined { |
| 280 | if (!resumeCursor || typeof resumeCursor !== "object") { |
| 281 | return undefined; |
| 282 | } |
| 283 | |
| 284 | const cursor = resumeCursor as { |
| 285 | acpSessionId?: unknown; |
| 286 | sessionId?: unknown; |
| 287 | }; |
| 288 | |
| 289 | const acpSessionId = |
| 290 | typeof cursor.acpSessionId === "string" |
| 291 | ? cursor.acpSessionId |
| 292 | : typeof cursor.sessionId === "string" |
| 293 | ? cursor.sessionId |
| 294 | : undefined; |
| 295 | |
| 296 | if (!acpSessionId) { |
| 297 | return {}; |
| 298 | } |
| 299 | return { acpSessionId }; |
| 300 | } |
| 301 | |
| 302 | function writeCursorMessage(context: CursorSessionContext, message: unknown): void { |
| 303 | if (!context.child.stdin.writable) { |
| 304 | throw new Error("Cannot write to Cursor ACP stdin."); |
| 305 | } |
| 306 | context.child.stdin.write(`${JSON.stringify(message)}\n`); |
| 307 | } |
| 308 | |
| 309 | function makeCursorAdapter(options?: CursorAdapterLiveOptions) { |
| 310 | return Effect.gen(function* () { |
| 311 | const nativeEventLogger = |
| 312 | options?.nativeEventLogger ?? |
| 313 | (options?.nativeEventLogPath !== undefined |
| 314 | ? yield* makeEventNdjsonLogger(options.nativeEventLogPath, { |
| 315 | stream: "native", |
| 316 | }) |
| 317 | : undefined); |
| 318 | |
| 319 | const nowIso = Effect.map(DateTime.now, DateTime.formatIso); |
| 320 | const nextEventId = Effect.map(Random.nextUUIDv4, (id) => EventId.makeUnsafe(id)); |
| 321 | const makeEventStamp = () => Effect.all({ eventId: nextEventId, createdAt: nowIso }); |
| 322 | |
| 323 | const sessions = new Map<ThreadId, CursorSessionContext>(); |
| 324 | const runtimeEventQueue = yield* Queue.unbounded<ProviderRuntimeEvent>(); |
| 325 | |
| 326 | const offerRuntimeEvent = (event: ProviderRuntimeEvent): Effect.Effect<void> => |
| 327 | Queue.offer(runtimeEventQueue, event).pipe(Effect.asVoid); |
| 328 | |
| 329 | const spawnCursorAcp = (input: { |
| 330 | readonly binaryPath: string; |
| 331 | readonly cwd: string; |
| 332 | readonly env: NodeJS.ProcessEnv; |
| 333 | readonly model?: string; |
| 334 | }): ChildProcessWithoutNullStreams => { |
| 335 | if (options?.createProcess) { |
| 336 | return options.createProcess(input); |
| 337 | } |
| 338 | const args = input.model ? ["--model", input.model, "acp"] : ["acp"]; |
| 339 | return spawn(input.binaryPath, args, { |
| 340 | cwd: input.cwd, |
| 341 | env: input.env, |
| 342 | stdio: ["pipe", "pipe", "pipe"], |
| 343 | }); |
| 344 | }; |
| 345 | |
| 346 | const sendRequest = ( |
| 347 | context: CursorSessionContext, |
| 348 | method: string, |
| 349 | params: unknown, |
| 350 | timeoutMs = DEFAULT_REQUEST_TIMEOUT_MS, |
| 351 | ): Promise<unknown> => { |
| 352 | const id = context.nextRpcId; |
| 353 | context.nextRpcId += 1; |
| 354 | |
| 355 | return new Promise((resolve, reject) => { |
| 356 | const timeout = setTimeout(() => { |
| 357 | context.pending.delete(String(id)); |
| 358 | reject(new Error(`Timed out waiting for ${method}.`)); |
| 359 | }, timeoutMs); |
| 360 | |
| 361 | context.pending.set(String(id), { |
| 362 | method, |
| 363 | timeout, |
| 364 | resolve, |
| 365 | reject, |
| 366 | }); |
| 367 | |
| 368 | writeCursorMessage(context, { |
| 369 | jsonrpc: "2.0", |
| 370 | id, |
| 371 | method, |
| 372 | params, |
| 373 | }); |
| 374 | }); |
| 375 | }; |
| 376 | |
| 377 | const resolvePendingRequest = ( |
| 378 | context: CursorSessionContext, |
| 379 | message: Record<string, unknown>, |
| 380 | ) => { |
| 381 | const id = message.id; |
| 382 | if (typeof id !== "string" && typeof id !== "number") { |
| 383 | return; |
| 384 | } |
| 385 | const pending = context.pending.get(String(id)); |
| 386 | if (!pending) { |
| 387 | return; |
| 388 | } |
| 389 | |
| 390 | clearTimeout(pending.timeout); |
| 391 | context.pending.delete(String(id)); |
| 392 | |
| 393 | const error = asObject(message.error); |
| 394 | if (error) { |
| 395 | pending.reject(new Error(`${pending.method} failed: ${JSON.stringify(error)}`)); |
| 396 | return; |
| 397 | } |
| 398 | |
| 399 | pending.resolve(message.result); |
| 400 | }; |
| 401 | |
| 402 | const decodePermissionRequest = Schema.decodeUnknownSync(CursorAcpPermissionRequest); |
| 403 | const decodeSessionUpdateNotification = Schema.decodeUnknownSync( |
| 404 | CursorAcpSessionUpdateNotification, |
| 405 | ); |
| 406 | |
| 407 | const emitRuntimeWarning = ( |
| 408 | context: CursorSessionContext, |
| 409 | message: string, |
| 410 | detail?: unknown, |
| 411 | ): Effect.Effect<void> => |
| 412 | Effect.gen(function* () { |
| 413 | const stamp = yield* makeEventStamp(); |
| 414 | yield* offerRuntimeEvent({ |
| 415 | type: "runtime.warning", |
| 416 | eventId: stamp.eventId, |
| 417 | provider: PROVIDER, |
| 418 | createdAt: stamp.createdAt, |
| 419 | threadId: context.session.threadId, |
| 420 | ...((context.turnState ? { turnId: context.turnState.turnId } : {})), |
| 421 | payload: { |
| 422 | message, |
| 423 | ...(detail !== undefined ? { detail } : {}), |
| 424 | }, |
| 425 | ...(context.turnState |
| 426 | ? { providerRefs: { providerTurnId: String(context.turnState.turnId) } } |
| 427 | : {}), |
| 428 | }); |
| 429 | }); |
| 430 | |
| 431 | const completeTurn = ( |
| 432 | context: CursorSessionContext, |
| 433 | state: "completed" | "failed" | "interrupted" | "cancelled", |
| 434 | errorMessage?: string, |
| 435 | stopReason?: string, |
| 436 | ): Effect.Effect<void> => |
| 437 | Effect.gen(function* () { |
| 438 | const turnState = context.turnState; |
| 439 | if (!turnState) { |
| 440 | return; |
| 441 | } |
| 442 | |
| 443 | const itemStamp = yield* makeEventStamp(); |
| 444 | yield* offerRuntimeEvent({ |
| 445 | type: "item.completed", |
| 446 | eventId: itemStamp.eventId, |
| 447 | provider: PROVIDER, |
| 448 | createdAt: itemStamp.createdAt, |
| 449 | threadId: context.session.threadId, |
| 450 | turnId: turnState.turnId, |
| 451 | itemId: asRuntimeItemId(turnState.assistantItemId), |
| 452 | payload: { |
| 453 | itemType: "assistant_message", |
| 454 | status: "completed", |
| 455 | title: "Assistant message", |
| 456 | }, |
| 457 | providerRefs: { |
| 458 | providerTurnId: String(turnState.turnId), |
| 459 | providerItemId: turnState.assistantItemId, |
| 460 | }, |
| 461 | }); |
| 462 | |
| 463 | context.turns.push({ |
| 464 | id: turnState.turnId, |
| 465 | items: [...turnState.items], |
| 466 | }); |
| 467 | |
| 468 | const stamp = yield* makeEventStamp(); |
| 469 | yield* offerRuntimeEvent({ |
| 470 | type: "turn.completed", |
| 471 | eventId: stamp.eventId, |
| 472 | provider: PROVIDER, |
| 473 | createdAt: stamp.createdAt, |
| 474 | threadId: context.session.threadId, |
| 475 | turnId: turnState.turnId, |
| 476 | payload: { |
| 477 | state, |
| 478 | ...(stopReason ? { stopReason } : {}), |
| 479 | ...(errorMessage ? { errorMessage } : {}), |
| 480 | }, |
| 481 | providerRefs: { |
| 482 | providerTurnId: String(turnState.turnId), |
| 483 | }, |
| 484 | }); |
| 485 | |
| 486 | context.turnState = undefined; |
| 487 | context.session = { |
| 488 | ...context.session, |
| 489 | status: state === "failed" ? "error" : "ready", |
| 490 | activeTurnId: undefined, |
| 491 | ...(errorMessage ? { lastError: errorMessage } : {}), |
| 492 | updatedAt: yield* nowIso, |
| 493 | }; |
| 494 | }); |
| 495 | |
| 496 | const handlePermissionRequest = ( |
| 497 | context: CursorSessionContext, |
| 498 | request: unknown, |
| 499 | ): Effect.Effect<void> => { |
| 500 | let decoded: ReturnType<typeof decodePermissionRequest>; |
| 501 | try { |
| 502 | decoded = decodePermissionRequest(request); |
| 503 | } catch (error) { |
| 504 | return emitRuntimeWarning( |
| 505 | context, |
| 506 | "Failed to decode Cursor ACP permission request.", |
| 507 | error, |
| 508 | ); |
| 509 | } |
| 510 | |
| 511 | return Effect.gen(function* () { |
| 512 | const requestId = ApprovalRequestId.makeUnsafe(randomUUID()); |
| 513 | const requestType = normalizeRequestType(decoded.params.toolCall); |
| 514 | const options = decoded.params.options.map((entry) => ({ optionId: entry.optionId })); |
| 515 | const detail = asString(asObject(decoded.params.toolCall)?.title); |
| 516 | |
| 517 | if (context.runtimeMode === "full-access") { |
| 518 | const selection = |
| 519 | selectCursorAutoApprovalOption(options) ?? |
| 520 | (options[0] |
| 521 | ? { |
| 522 | optionId: options[0].optionId, |
| 523 | decision: "accept", |
| 524 | } |
| 525 | : undefined); |
| 526 | if (!selection) { |
| 527 | return yield* emitRuntimeWarning( |
| 528 | context, |
| 529 | "Cursor ACP permission request contained no selectable options.", |
| 530 | decoded.params, |
| 531 | ); |
| 532 | } |
| 533 | |
| 534 | writeCursorMessage(context, { |
| 535 | jsonrpc: "2.0", |
| 536 | id: decoded.id, |
| 537 | result: { |
| 538 | outcome: { |
| 539 | outcome: "selected", |
| 540 | optionId: selection.optionId, |
| 541 | }, |
| 542 | }, |
| 543 | }); |
| 544 | |
| 545 | const stamp = yield* makeEventStamp(); |
| 546 | yield* offerRuntimeEvent({ |
| 547 | type: "request.resolved", |
| 548 | eventId: stamp.eventId, |
| 549 | provider: PROVIDER, |
| 550 | createdAt: stamp.createdAt, |
| 551 | threadId: context.session.threadId, |
| 552 | ...((context.turnState ? { turnId: context.turnState.turnId } : {})), |
| 553 | requestId: asRuntimeRequestId(requestId), |
| 554 | payload: { |
| 555 | requestType, |
| 556 | decision: selection.decision, |
| 557 | resolution: { |
| 558 | optionId: selection.optionId, |
| 559 | autoApproved: true, |
| 560 | }, |
| 561 | }, |
| 562 | providerRefs: { |
| 563 | ...(context.turnState ? { providerTurnId: String(context.turnState.turnId) } : {}), |
| 564 | providerRequestId: String(decoded.id), |
| 565 | }, |
| 566 | raw: { |
| 567 | source: "cursor.acp.response", |
| 568 | method: "session/request_permission", |
| 569 | payload: { |
| 570 | optionId: selection.optionId, |
| 571 | autoApproved: true, |
| 572 | }, |
| 573 | }, |
| 574 | }); |
| 575 | return; |
| 576 | } |
| 577 | |
| 578 | context.pendingPermissions.set(requestId, { |
| 579 | jsonRpcId: decoded.id, |
| 580 | requestType, |
| 581 | options, |
| 582 | }); |
| 583 | |
| 584 | const stamp = yield* makeEventStamp(); |
| 585 | yield* offerRuntimeEvent({ |
| 586 | type: "request.opened", |
| 587 | eventId: stamp.eventId, |
| 588 | provider: PROVIDER, |
| 589 | createdAt: stamp.createdAt, |
| 590 | threadId: context.session.threadId, |
| 591 | ...((context.turnState ? { turnId: context.turnState.turnId } : {})), |
| 592 | requestId: asRuntimeRequestId(requestId), |
| 593 | payload: { |
| 594 | requestType, |
| 595 | ...(detail ? { detail } : {}), |
| 596 | args: decoded.params, |
| 597 | }, |
| 598 | providerRefs: { |
| 599 | ...(context.turnState ? { providerTurnId: String(context.turnState.turnId) } : {}), |
| 600 | providerRequestId: String(decoded.id), |
| 601 | }, |
| 602 | raw: { |
| 603 | source: "cursor.acp.request", |
| 604 | method: decoded.method, |
| 605 | payload: decoded, |
| 606 | }, |
| 607 | }); |
| 608 | }); |
| 609 | }; |
| 610 | |
| 611 | const handleSessionUpdateNotification = ( |
| 612 | context: CursorSessionContext, |
| 613 | notification: unknown, |
| 614 | ): Effect.Effect<void> => { |
| 615 | let decoded: ReturnType<typeof decodeSessionUpdateNotification>; |
| 616 | try { |
| 617 | decoded = decodeSessionUpdateNotification(notification); |
| 618 | } catch (error) { |
| 619 | return emitRuntimeWarning( |
| 620 | context, |
| 621 | "Failed to decode Cursor ACP session/update notification.", |
| 622 | error, |
| 623 | ); |
| 624 | } |
| 625 | |
| 626 | return Effect.gen(function* () { |
| 627 | const update = decoded.params.update; |
| 628 | |
| 629 | const base = { |
| 630 | provider: PROVIDER, |
| 631 | threadId: context.session.threadId, |
| 632 | ...((context.turnState ? { turnId: context.turnState.turnId } : {})), |
| 633 | ...(context.turnState |
| 634 | ? { providerRefs: { providerTurnId: String(context.turnState.turnId) } } |
| 635 | : {}), |
| 636 | raw: { |
| 637 | source: "cursor.acp.notification" as const, |
| 638 | method: decoded.method, |
| 639 | messageType: update.sessionUpdate, |
| 640 | payload: decoded, |
| 641 | }, |
| 642 | }; |
| 643 | |
| 644 | switch (update.sessionUpdate) { |
| 645 | case "available_commands_update": { |
| 646 | const stamp = yield* makeEventStamp(); |
| 647 | yield* offerRuntimeEvent({ |
| 648 | ...base, |
| 649 | type: "session.configured", |
| 650 | eventId: stamp.eventId, |
| 651 | createdAt: stamp.createdAt, |
| 652 | payload: { |
| 653 | config: { |
| 654 | availableCommands: update.availableCommands, |
| 655 | }, |
| 656 | }, |
| 657 | }); |
| 658 | return; |
| 659 | } |
| 660 | |
| 661 | case "agent_thought_chunk": { |
| 662 | if (!context.turnState) return; |
| 663 | if (update.content.text.length === 0) return; |
| 664 | const stamp = yield* makeEventStamp(); |
| 665 | yield* offerRuntimeEvent({ |
| 666 | ...base, |
| 667 | type: "content.delta", |
| 668 | eventId: stamp.eventId, |
| 669 | createdAt: stamp.createdAt, |
| 670 | turnId: context.turnState.turnId, |
| 671 | itemId: asRuntimeItemId(context.turnState.assistantItemId), |
| 672 | payload: { |
| 673 | streamKind: "reasoning_text", |
| 674 | delta: update.content.text, |
| 675 | }, |
| 676 | }); |
| 677 | return; |
| 678 | } |
| 679 | |
| 680 | case "agent_message_chunk": { |
| 681 | if (!context.turnState) return; |
| 682 | if (update.content.text.length === 0) return; |
| 683 | const stamp = yield* makeEventStamp(); |
| 684 | yield* offerRuntimeEvent({ |
| 685 | ...base, |
| 686 | type: "content.delta", |
| 687 | eventId: stamp.eventId, |
| 688 | createdAt: stamp.createdAt, |
| 689 | turnId: context.turnState.turnId, |
| 690 | itemId: asRuntimeItemId(context.turnState.assistantItemId), |
| 691 | payload: { |
| 692 | streamKind: "assistant_text", |
| 693 | delta: update.content.text, |
| 694 | }, |
| 695 | }); |
| 696 | return; |
| 697 | } |
| 698 | |
| 699 | case "tool_call": { |
| 700 | if (!context.turnState) return; |
| 701 | const seen = context.turnState.startedToolCalls.has(update.toolCallId); |
| 702 | const itemType = normalizeToolItemType(update.kind, update.title); |
| 703 | const title = update.title ?? titleForItemType(itemType); |
| 704 | context.turnState.toolCalls.set(update.toolCallId, { itemType, title }); |
| 705 | const detail = asString(asObject(update.rawInput)?.command); |
| 706 | |
| 707 | if (!seen) { |
| 708 | context.turnState.startedToolCalls.add(update.toolCallId); |
| 709 | const stamp = yield* makeEventStamp(); |
| 710 | yield* offerRuntimeEvent({ |
| 711 | ...base, |
| 712 | type: "item.started", |
| 713 | eventId: stamp.eventId, |
| 714 | createdAt: stamp.createdAt, |
| 715 | turnId: context.turnState.turnId, |
| 716 | itemId: asRuntimeItemId(update.toolCallId), |
| 717 | payload: { |
| 718 | itemType, |
| 719 | status: "inProgress", |
| 720 | title, |
| 721 | ...(detail ? { detail } : {}), |
| 722 | ...(update.rawInput !== undefined ? { data: update.rawInput } : {}), |
| 723 | }, |
| 724 | }); |
| 725 | return; |
| 726 | } |
| 727 | |
| 728 | const stamp = yield* makeEventStamp(); |
| 729 | yield* offerRuntimeEvent({ |
| 730 | ...base, |
| 731 | type: "item.updated", |
| 732 | eventId: stamp.eventId, |
| 733 | createdAt: stamp.createdAt, |
| 734 | turnId: context.turnState.turnId, |
| 735 | itemId: asRuntimeItemId(update.toolCallId), |
| 736 | payload: { |
| 737 | itemType, |
| 738 | status: "inProgress", |
| 739 | title, |
| 740 | ...(detail ? { detail } : {}), |
| 741 | ...(update.rawInput !== undefined ? { data: update.rawInput } : {}), |
| 742 | }, |
| 743 | }); |
| 744 | return; |
| 745 | } |
| 746 | |
| 747 | case "tool_call_update": { |
| 748 | if (!context.turnState) return; |
| 749 | const status = update.status === "completed" ? "completed" : "inProgress"; |
| 750 | const trackedTool = context.turnState.toolCalls.get(update.toolCallId); |
| 751 | const itemType = trackedTool?.itemType ?? "dynamic_tool_call"; |
| 752 | const title = trackedTool?.title ?? titleForItemType(itemType); |
| 753 | const stamp = yield* makeEventStamp(); |
| 754 | const eventType = update.status === "completed" ? "item.completed" : "item.updated"; |
| 755 | yield* offerRuntimeEvent({ |
| 756 | ...base, |
| 757 | type: eventType, |
| 758 | eventId: stamp.eventId, |
| 759 | createdAt: stamp.createdAt, |
| 760 | turnId: context.turnState.turnId, |
| 761 | itemId: asRuntimeItemId(update.toolCallId), |
| 762 | payload: { |
| 763 | itemType, |
| 764 | status, |
| 765 | title, |
| 766 | ...(summarizeToolOutput(update.rawOutput) |
| 767 | ? { detail: summarizeToolOutput(update.rawOutput) } |
| 768 | : {}), |
| 769 | ...(update.rawOutput !== undefined ? { data: update.rawOutput } : {}), |
| 770 | }, |
| 771 | }); |
| 772 | if (update.status === "completed") { |
| 773 | context.turnState.toolCalls.delete(update.toolCallId); |
| 774 | } |
| 775 | return; |
| 776 | } |
| 777 | } |
| 778 | }); |
| 779 | }; |
| 780 | |
| 781 | const handleStdoutLine = (context: CursorSessionContext, line: string): void => { |
| 782 | let parsed: unknown; |
| 783 | try { |
| 784 | parsed = JSON.parse(line); |
| 785 | } catch { |
| 786 | Effect.runFork( |
| 787 | emitRuntimeWarning(context, "Received invalid JSON from Cursor ACP.", { |
| 788 | line, |
| 789 | }), |
| 790 | ); |
| 791 | return; |
| 792 | } |
| 793 | |
| 794 | const message = asObject(parsed); |
| 795 | if (!message) { |
| 796 | Effect.runFork( |
| 797 | emitRuntimeWarning(context, "Received non-object protocol message from Cursor ACP."), |
| 798 | ); |
| 799 | return; |
| 800 | } |
| 801 | |
| 802 | if (nativeEventLogger) { |
| 803 | try { |
| 804 | const nativeMethod = |
| 805 | typeof message.method === "string" |
| 806 | ? message.method |
| 807 | : typeof message.id === "string" || typeof message.id === "number" |
| 808 | ? "cursor/acp/response" |
| 809 | : "cursor/acp/message"; |
| 810 | const nativeKind = |
| 811 | typeof message.method === "string" && |
| 812 | (typeof message.id === "string" || typeof message.id === "number") |
| 813 | ? "request" |
| 814 | : typeof message.method === "string" |
| 815 | ? "notification" |
| 816 | : "session"; |
| 817 | Effect.runFork( |
| 818 | nativeEventLogger |
| 819 | .write( |
| 820 | { |
| 821 | observedAt: new Date().toISOString(), |
| 822 | event: { |
| 823 | id: EventId.makeUnsafe(randomUUID()), |
| 824 | kind: nativeKind, |
| 825 | provider: PROVIDER, |
| 826 | createdAt: new Date().toISOString(), |
| 827 | method: nativeMethod, |
| 828 | threadId: context.session.threadId, |
| 829 | ...(context.turnState ? { turnId: String(context.turnState.turnId) } : {}), |
| 830 | payload: message, |
| 831 | }, |
| 832 | }, |
| 833 | null, |
| 834 | ), |
| 835 | ); |
| 836 | } catch { |
| 837 | // Native logging must never block or break protocol handling. |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | if ( |
| 842 | (typeof message.id === "string" || typeof message.id === "number") && |
| 843 | typeof message.method === "string" |
| 844 | ) { |
| 845 | if (message.method === "session/request_permission") { |
| 846 | Effect.runFork(handlePermissionRequest(context, message)); |
| 847 | return; |
| 848 | } |
| 849 | |
| 850 | writeCursorMessage(context, { |
| 851 | jsonrpc: "2.0", |
| 852 | id: message.id, |
| 853 | error: { |
| 854 | code: -32601, |
| 855 | message: `Unsupported server request: ${message.method}`, |
| 856 | }, |
| 857 | }); |
| 858 | return; |
| 859 | } |
| 860 | |
| 861 | if ( |
| 862 | (typeof message.id === "string" || typeof message.id === "number") && |
| 863 | ("result" in message || "error" in message) |
| 864 | ) { |
| 865 | resolvePendingRequest(context, message); |
| 866 | return; |
| 867 | } |
| 868 | |
| 869 | if (typeof message.method === "string") { |
| 870 | if (message.method === "session/update") { |
| 871 | Effect.runFork(handleSessionUpdateNotification(context, message)); |
| 872 | return; |
| 873 | } |
| 874 | |
| 875 | Effect.runFork( |
| 876 | emitRuntimeWarning( |
| 877 | context, |
| 878 | `Unhandled Cursor ACP notification '${message.method}'.`, |
| 879 | message, |
| 880 | ), |
| 881 | ); |
| 882 | return; |
| 883 | } |
| 884 | |
| 885 | Effect.runFork( |
| 886 | emitRuntimeWarning(context, "Received unrecognized protocol message from Cursor ACP.", { |
| 887 | message, |
| 888 | }), |
| 889 | ); |
| 890 | }; |
| 891 | |
| 892 | const stopSessionInternal = ( |
| 893 | context: CursorSessionContext, |
| 894 | options?: { readonly emitExitEvent?: boolean }, |
| 895 | ): Effect.Effect<void> => |
| 896 | Effect.gen(function* () { |
| 897 | if (context.stopping) return; |
| 898 | context.stopping = true; |
| 899 | |
| 900 | for (const pending of context.pending.values()) { |
| 901 | clearTimeout(pending.timeout); |
| 902 | pending.reject(new Error("Cursor session stopped before request completion.")); |
| 903 | } |
| 904 | context.pending.clear(); |
| 905 | |
| 906 | if (context.turnState) { |
| 907 | yield* completeTurn(context, "interrupted", "Session stopped.", "cancelled"); |
| 908 | } |
| 909 | |
| 910 | context.output.close(); |
| 911 | if (!context.child.killed) { |
| 912 | context.child.kill(); |
| 913 | } |
| 914 | |
| 915 | context.session = { |
| 916 | ...context.session, |
| 917 | status: "closed", |
| 918 | activeTurnId: undefined, |
| 919 | updatedAt: yield* nowIso, |
| 920 | }; |
| 921 | |
| 922 | if (options?.emitExitEvent !== false) { |
| 923 | const stamp = yield* makeEventStamp(); |
| 924 | yield* offerRuntimeEvent({ |
| 925 | type: "session.exited", |
| 926 | eventId: stamp.eventId, |
| 927 | provider: PROVIDER, |
| 928 | createdAt: stamp.createdAt, |
| 929 | threadId: context.session.threadId, |
| 930 | payload: { |
| 931 | reason: "Session stopped", |
| 932 | exitKind: "graceful", |
| 933 | }, |
| 934 | }); |
| 935 | } |
| 936 | |
| 937 | sessions.delete(context.session.threadId); |
| 938 | }); |
| 939 | |
| 940 | const requireSession = ( |
| 941 | threadId: ThreadId, |
| 942 | ): Effect.Effect<CursorSessionContext, ProviderAdapterError> => { |
| 943 | const context = sessions.get(threadId); |
| 944 | if (!context) { |
| 945 | return Effect.fail( |
| 946 | new ProviderAdapterSessionNotFoundError({ |
| 947 | provider: PROVIDER, |
| 948 | threadId, |
| 949 | }), |
| 950 | ); |
| 951 | } |
| 952 | if (context.stopping || context.session.status === "closed") { |
| 953 | return Effect.fail( |
| 954 | new ProviderAdapterSessionClosedError({ |
| 955 | provider: PROVIDER, |
| 956 | threadId, |
| 957 | }), |
| 958 | ); |
| 959 | } |
| 960 | return Effect.succeed(context); |
| 961 | }; |
| 962 | |
| 963 | const startSession: CursorAdapterShape["startSession"] = (input) => |
| 964 | Effect.gen(function* () { |
| 965 | if (input.provider !== undefined && input.provider !== PROVIDER) { |
| 966 | return yield* new ProviderAdapterValidationError({ |
| 967 | provider: PROVIDER, |
| 968 | operation: "startSession", |
| 969 | issue: `Expected provider '${PROVIDER}' but received '${input.provider}'.`, |
| 970 | }); |
| 971 | } |
| 972 | |
| 973 | const startedAt = yield* nowIso; |
| 974 | const cwd = input.cwd ?? process.cwd(); |
| 975 | const cursorOptions = input.providerOptions?.cursor as { binaryPath?: string } | undefined; |
| 976 | const binaryPath = cursorOptions?.binaryPath ?? "agent"; |
| 977 | const resumeState = readCursorResumeState(input.resumeCursor); |
| 978 | |
| 979 | const child = yield* Effect.try({ |
| 980 | try: () => |
| 981 | spawnCursorAcp({ |
| 982 | binaryPath, |
| 983 | cwd, |
| 984 | env: process.env, |
| 985 | ...(input.model ? { model: input.model } : {}), |
| 986 | }), |
| 987 | catch: (cause) => |
| 988 | new ProviderAdapterProcessError({ |
| 989 | provider: PROVIDER, |
| 990 | threadId: input.threadId, |
| 991 | detail: toMessage(cause, "Failed to spawn Cursor ACP process."), |
| 992 | cause, |
| 993 | }), |
| 994 | }); |
| 995 | |
| 996 | const output = readline.createInterface({ input: child.stdout }); |
| 997 | |
| 998 | const session: ProviderSession = { |
| 999 | threadId: input.threadId, |
| 1000 | provider: PROVIDER, |
| 1001 | status: "connecting", |
| 1002 | runtimeMode: input.runtimeMode, |
| 1003 | ...(input.cwd ? { cwd: input.cwd } : {}), |
| 1004 | ...(input.model ? { model: input.model } : {}), |
| 1005 | createdAt: startedAt, |
| 1006 | updatedAt: startedAt, |
| 1007 | }; |
| 1008 | |
| 1009 | const context: CursorSessionContext = { |
| 1010 | session, |
| 1011 | runtimeMode: input.runtimeMode, |
| 1012 | child, |
| 1013 | output, |
| 1014 | pending: new Map(), |
| 1015 | pendingPermissions: new Map(), |
| 1016 | turns: [], |
| 1017 | turnState: undefined, |
| 1018 | acpSessionId: resumeState?.acpSessionId ?? "", |
| 1019 | nextRpcId: 1, |
| 1020 | stopping: false, |
| 1021 | }; |
| 1022 | |
| 1023 | output.on("line", (line) => { |
| 1024 | handleStdoutLine(context, line); |
| 1025 | }); |
| 1026 | |
| 1027 | child.stderr.on("data", (chunk: Buffer) => { |
| 1028 | const message = chunk.toString().trim(); |
| 1029 | if (message.length === 0) { |
| 1030 | return; |
| 1031 | } |
| 1032 | Effect.runFork( |
| 1033 | emitRuntimeWarning(context, "Cursor ACP stderr output", { |
| 1034 | message, |
| 1035 | }), |
| 1036 | ); |
| 1037 | }); |
| 1038 | |
| 1039 | child.on("error", (error) => { |
| 1040 | Effect.runFork( |
| 1041 | Effect.gen(function* () { |
| 1042 | const stamp = yield* makeEventStamp(); |
| 1043 | yield* offerRuntimeEvent({ |
| 1044 | type: "runtime.error", |
| 1045 | eventId: stamp.eventId, |
| 1046 | provider: PROVIDER, |
| 1047 | createdAt: stamp.createdAt, |
| 1048 | threadId: context.session.threadId, |
| 1049 | ...((context.turnState ? { turnId: context.turnState.turnId } : {})), |
| 1050 | payload: { |
| 1051 | message: error.message || "Cursor ACP process error.", |
| 1052 | class: "transport_error", |
| 1053 | detail: error, |
| 1054 | }, |
| 1055 | }); |
| 1056 | }), |
| 1057 | ); |
| 1058 | }); |
| 1059 | |
| 1060 | child.on("exit", (code, signal) => { |
| 1061 | if (context.stopping) { |
| 1062 | return; |
| 1063 | } |
| 1064 | Effect.runFork( |
| 1065 | Effect.gen(function* () { |
| 1066 | if (context.turnState) { |
| 1067 | yield* completeTurn( |
| 1068 | context, |
| 1069 | "failed", |
| 1070 | `Cursor ACP exited (code=${code ?? "null"}, signal=${signal ?? "null"}).`, |
| 1071 | ); |
| 1072 | } |
| 1073 | |
| 1074 | const stamp = yield* makeEventStamp(); |
| 1075 | yield* offerRuntimeEvent({ |
| 1076 | type: "session.exited", |
| 1077 | eventId: stamp.eventId, |
| 1078 | provider: PROVIDER, |
| 1079 | createdAt: stamp.createdAt, |
| 1080 | threadId: context.session.threadId, |
| 1081 | payload: { |
| 1082 | reason: `Cursor ACP exited (code=${code ?? "null"}, signal=${signal ?? "null"}).`, |
| 1083 | exitKind: code === 0 ? "graceful" : "error", |
| 1084 | recoverable: code === 0, |
| 1085 | }, |
| 1086 | }); |
| 1087 | |
| 1088 | sessions.delete(context.session.threadId); |
| 1089 | }), |
| 1090 | ); |
| 1091 | }); |
| 1092 | |
| 1093 | sessions.set(input.threadId, context); |
| 1094 | |
| 1095 | const initializeResult = yield* Effect.tryPromise({ |
| 1096 | try: async () => |
| 1097 | sendRequest(context, "initialize", { |
| 1098 | protocolVersion: CURSOR_ACP_PROTOCOL_VERSION, |
| 1099 | }), |
| 1100 | catch: (cause) => toRequestError(input.threadId, "initialize", cause), |
| 1101 | }); |
| 1102 | const decodedInitialize = yield* Effect.try({ |
| 1103 | try: () => Schema.decodeUnknownSync(CursorAcpInitializeResult)(initializeResult), |
| 1104 | catch: (cause) => |
| 1105 | new ProviderAdapterValidationError({ |
| 1106 | provider: PROVIDER, |
| 1107 | operation: "startSession", |
| 1108 | issue: "Cursor initialize response did not match expected schema.", |
| 1109 | cause, |
| 1110 | }), |
| 1111 | }); |
| 1112 | |
| 1113 | const initStamp = yield* makeEventStamp(); |
| 1114 | yield* offerRuntimeEvent({ |
| 1115 | type: "session.configured", |
| 1116 | eventId: initStamp.eventId, |
| 1117 | provider: PROVIDER, |
| 1118 | createdAt: initStamp.createdAt, |
| 1119 | threadId: input.threadId, |
| 1120 | payload: { |
| 1121 | config: decodedInitialize, |
| 1122 | }, |
| 1123 | raw: { |
| 1124 | source: "cursor.acp.response", |
| 1125 | method: "initialize", |
| 1126 | payload: initializeResult, |
| 1127 | }, |
| 1128 | }); |
| 1129 | |
| 1130 | const authenticateRequest = { methodId: "cursor_login" }; |
| 1131 | const authStartStamp = yield* makeEventStamp(); |
| 1132 | yield* offerRuntimeEvent({ |
| 1133 | type: "auth.status", |
| 1134 | eventId: authStartStamp.eventId, |
| 1135 | provider: PROVIDER, |
| 1136 | createdAt: authStartStamp.createdAt, |
| 1137 | threadId: input.threadId, |
| 1138 | payload: { |
| 1139 | isAuthenticating: true, |
| 1140 | }, |
| 1141 | raw: { |
| 1142 | source: "cursor.acp.request", |
| 1143 | method: "authenticate", |
| 1144 | payload: authenticateRequest, |
| 1145 | }, |
| 1146 | }); |
| 1147 | |
| 1148 | const authenticateResult = yield* Effect.tryPromise({ |
| 1149 | try: async () => sendRequest(context, "authenticate", authenticateRequest), |
| 1150 | catch: (cause) => toRequestError(input.threadId, "authenticate", cause), |
| 1151 | }).pipe( |
| 1152 | Effect.match({ |
| 1153 | onFailure: (error) => ({ ok: false as const, error }), |
| 1154 | onSuccess: (value) => ({ ok: true as const, value }), |
| 1155 | }), |
| 1156 | ); |
| 1157 | const authEndStamp = yield* makeEventStamp(); |
| 1158 | if (!authenticateResult.ok) { |
| 1159 | yield* offerRuntimeEvent({ |
| 1160 | type: "auth.status", |
| 1161 | eventId: authEndStamp.eventId, |
| 1162 | provider: PROVIDER, |
| 1163 | createdAt: authEndStamp.createdAt, |
| 1164 | threadId: input.threadId, |
| 1165 | payload: { |
| 1166 | isAuthenticating: false, |
| 1167 | error: toMessage(authenticateResult.error, "Cursor authentication failed."), |
| 1168 | }, |
| 1169 | raw: { |
| 1170 | source: "cursor.acp.response", |
| 1171 | method: "authenticate", |
| 1172 | payload: { |
| 1173 | error: toMessage(authenticateResult.error, "Cursor authentication failed."), |
| 1174 | }, |
| 1175 | }, |
| 1176 | }); |
| 1177 | } else { |
| 1178 | yield* offerRuntimeEvent({ |
| 1179 | type: "auth.status", |
| 1180 | eventId: authEndStamp.eventId, |
| 1181 | provider: PROVIDER, |
| 1182 | createdAt: authEndStamp.createdAt, |
| 1183 | threadId: input.threadId, |
| 1184 | payload: { |
| 1185 | isAuthenticating: false, |
| 1186 | }, |
| 1187 | raw: { |
| 1188 | source: "cursor.acp.response", |
| 1189 | method: "authenticate", |
| 1190 | payload: authenticateResult.value, |
| 1191 | }, |
| 1192 | }); |
| 1193 | } |
| 1194 | |
| 1195 | const acpSessionId = yield* Effect.tryPromise({ |
| 1196 | try: async () => { |
| 1197 | if (resumeState?.acpSessionId) { |
| 1198 | await sendRequest(context, "session/load", { |
| 1199 | sessionId: resumeState.acpSessionId, |
| 1200 | cwd, |
| 1201 | mcpServers: [], |
| 1202 | }); |
| 1203 | return resumeState.acpSessionId; |
| 1204 | } |
| 1205 | |
| 1206 | const sessionNewParams: { |
| 1207 | cwd: string; |
| 1208 | mcpServers: []; |
| 1209 | model?: string; |
| 1210 | } = { |
| 1211 | cwd, |
| 1212 | mcpServers: [], |
| 1213 | }; |
| 1214 | if (input.model) { |
| 1215 | sessionNewParams.model = input.model; |
| 1216 | } |
| 1217 | const result = await sendRequest(context, "session/new", sessionNewParams); |
| 1218 | const decoded = Schema.decodeUnknownSync(CursorAcpSessionNewResult)(result); |
| 1219 | return decoded.sessionId; |
| 1220 | }, |
| 1221 | catch: (cause) => toRequestError(input.threadId, "session/new|session/load", cause), |
| 1222 | }); |
| 1223 | |
| 1224 | context.acpSessionId = acpSessionId; |
| 1225 | context.session = { |
| 1226 | ...context.session, |
| 1227 | status: "ready", |
| 1228 | resumeCursor: { |
| 1229 | acpSessionId, |
| 1230 | }, |
| 1231 | updatedAt: yield* nowIso, |
| 1232 | }; |
| 1233 | |
| 1234 | const sessionStartedStamp = yield* makeEventStamp(); |
| 1235 | yield* offerRuntimeEvent({ |
| 1236 | type: "session.started", |
| 1237 | eventId: sessionStartedStamp.eventId, |
| 1238 | provider: PROVIDER, |
| 1239 | createdAt: sessionStartedStamp.createdAt, |
| 1240 | threadId: input.threadId, |
| 1241 | payload: resumeState?.acpSessionId ? { resume: input.resumeCursor } : {}, |
| 1242 | }); |
| 1243 | |
| 1244 | const threadStartedStamp = yield* makeEventStamp(); |
| 1245 | yield* offerRuntimeEvent({ |
| 1246 | type: "thread.started", |
| 1247 | eventId: threadStartedStamp.eventId, |
| 1248 | provider: PROVIDER, |
| 1249 | createdAt: threadStartedStamp.createdAt, |
| 1250 | threadId: input.threadId, |
| 1251 | payload: { |
| 1252 | providerThreadId: acpSessionId, |
| 1253 | }, |
| 1254 | }); |
| 1255 | |
| 1256 | const readyStamp = yield* makeEventStamp(); |
| 1257 | yield* offerRuntimeEvent({ |
| 1258 | type: "session.state.changed", |
| 1259 | eventId: readyStamp.eventId, |
| 1260 | provider: PROVIDER, |
| 1261 | createdAt: readyStamp.createdAt, |
| 1262 | threadId: input.threadId, |
| 1263 | payload: { |
| 1264 | state: "ready", |
| 1265 | }, |
| 1266 | }); |
| 1267 | |
| 1268 | return { |
| 1269 | ...context.session, |
| 1270 | }; |
| 1271 | }); |
| 1272 | |
| 1273 | const sendTurn: CursorAdapterShape["sendTurn"] = (input) => |
| 1274 | Effect.gen(function* () { |
| 1275 | const context = yield* requireSession(input.threadId); |
| 1276 | |
| 1277 | if (context.turnState) { |
| 1278 | return yield* new ProviderAdapterValidationError({ |
| 1279 | provider: PROVIDER, |
| 1280 | operation: "sendTurn", |
| 1281 | issue: `Thread '${input.threadId}' already has an active turn '${context.turnState.turnId}'.`, |
| 1282 | }); |
| 1283 | } |
| 1284 | |
| 1285 | const promptText = input.input?.trim(); |
| 1286 | if (!promptText || promptText.length === 0) { |
| 1287 | return yield* new ProviderAdapterValidationError({ |
| 1288 | provider: PROVIDER, |
| 1289 | operation: "sendTurn", |
| 1290 | issue: "Turn input must be non-empty.", |
| 1291 | }); |
| 1292 | } |
| 1293 | |
| 1294 | const turnId = TurnId.makeUnsafe(yield* Random.nextUUIDv4); |
| 1295 | const turnState: CursorTurnState = { |
| 1296 | turnId, |
| 1297 | assistantItemId: asProviderItemId(yield* Random.nextUUIDv4), |
| 1298 | startedToolCalls: new Set(), |
| 1299 | toolCalls: new Map(), |
| 1300 | items: [], |
| 1301 | }; |
| 1302 | |
| 1303 | context.turnState = turnState; |
| 1304 | context.session = { |
| 1305 | ...context.session, |
| 1306 | status: "running", |
| 1307 | activeTurnId: turnId, |
| 1308 | updatedAt: yield* nowIso, |
| 1309 | }; |
| 1310 | |
| 1311 | const startedStamp = yield* makeEventStamp(); |
| 1312 | yield* offerRuntimeEvent({ |
| 1313 | type: "turn.started", |
| 1314 | eventId: startedStamp.eventId, |
| 1315 | provider: PROVIDER, |
| 1316 | createdAt: startedStamp.createdAt, |
| 1317 | threadId: context.session.threadId, |
| 1318 | turnId, |
| 1319 | payload: input.model ? { model: input.model } : {}, |
| 1320 | providerRefs: { |
| 1321 | providerTurnId: String(turnId), |
| 1322 | }, |
| 1323 | }); |
| 1324 | |
| 1325 | const promptResultRaw = yield* Effect.tryPromise({ |
| 1326 | try: async () => |
| 1327 | sendRequest(context, "session/prompt", { |
| 1328 | sessionId: context.acpSessionId, |
| 1329 | prompt: [{ type: "text", text: promptText }], |
| 1330 | }), |
| 1331 | catch: (cause) => toRequestError(input.threadId, "session/prompt", cause), |
| 1332 | }); |
| 1333 | |
| 1334 | const promptResult = yield* Effect.try({ |
| 1335 | try: () => Schema.decodeUnknownSync(CursorAcpSessionPromptResult)(promptResultRaw), |
| 1336 | catch: (cause) => |
| 1337 | new ProviderAdapterValidationError({ |
| 1338 | provider: PROVIDER, |
| 1339 | operation: "sendTurn", |
| 1340 | issue: "Cursor session/prompt response did not match expected schema.", |
| 1341 | cause, |
| 1342 | }), |
| 1343 | }); |
| 1344 | const turnStateValue = mapStopReasonToTurnState(promptResult.stopReason); |
| 1345 | yield* completeTurn( |
| 1346 | context, |
| 1347 | turnStateValue, |
| 1348 | turnStateValue === "failed" ? "Cursor prompt failed." : undefined, |
| 1349 | promptResult.stopReason, |
| 1350 | ); |
| 1351 | |
| 1352 | context.session = { |
| 1353 | ...context.session, |
| 1354 | status: "ready", |
| 1355 | activeTurnId: undefined, |
| 1356 | updatedAt: yield* nowIso, |
| 1357 | resumeCursor: { |
| 1358 | acpSessionId: context.acpSessionId, |
| 1359 | }, |
| 1360 | }; |
| 1361 | |
| 1362 | return { |
| 1363 | threadId: context.session.threadId, |
| 1364 | turnId, |
| 1365 | ...(context.session.resumeCursor !== undefined |
| 1366 | ? { resumeCursor: context.session.resumeCursor } |
| 1367 | : {}), |
| 1368 | } satisfies ProviderTurnStartResult; |
| 1369 | }); |
| 1370 | |
| 1371 | const interruptTurn: CursorAdapterShape["interruptTurn"] = (threadId, _turnId) => |
| 1372 | Effect.gen(function* () { |
| 1373 | const context = yield* requireSession(threadId); |
| 1374 | if (!context.turnState) { |
| 1375 | return; |
| 1376 | } |
| 1377 | |
| 1378 | const cancelResult = yield* Effect.tryPromise({ |
| 1379 | try: async () => |
| 1380 | sendRequest(context, "session/cancel", { sessionId: context.acpSessionId }, 15_000), |
| 1381 | catch: (cause) => toRequestError(threadId, "session/cancel", cause), |
| 1382 | }).pipe( |
| 1383 | Effect.match({ |
| 1384 | onFailure: (error) => ({ ok: false as const, error }), |
| 1385 | onSuccess: () => ({ ok: true as const }), |
| 1386 | }), |
| 1387 | ); |
| 1388 | |
| 1389 | if (!cancelResult.ok) { |
| 1390 | yield* emitRuntimeWarning( |
| 1391 | context, |
| 1392 | "Cursor ACP session/cancel is unavailable; marking turn as interrupted.", |
| 1393 | cancelResult.error, |
| 1394 | ); |
| 1395 | } |
| 1396 | |
| 1397 | yield* completeTurn(context, "interrupted", "Turn interrupted by user.", "cancelled"); |
| 1398 | }); |
| 1399 | |
| 1400 | const readThread: CursorAdapterShape["readThread"] = (threadId) => |
| 1401 | Effect.gen(function* () { |
| 1402 | const context = yield* requireSession(threadId); |
| 1403 | return { |
| 1404 | threadId: context.session.threadId, |
| 1405 | turns: context.turns.map((turn) => ({ |
| 1406 | id: turn.id, |
| 1407 | items: [...turn.items], |
| 1408 | })), |
| 1409 | }; |
| 1410 | }); |
| 1411 | |
| 1412 | const rollbackThread: CursorAdapterShape["rollbackThread"] = (threadId, _numTurns) => |
| 1413 | Effect.fail( |
| 1414 | new ProviderAdapterRequestError({ |
| 1415 | provider: PROVIDER, |
| 1416 | method: "thread/rollback", |
| 1417 | detail: `Cursor ACP does not support thread rollback for thread '${threadId}'.`, |
| 1418 | }), |
| 1419 | ); |
| 1420 | |
| 1421 | const respondToRequest: CursorAdapterShape["respondToRequest"] = ( |
| 1422 | threadId, |
| 1423 | requestId, |
| 1424 | decision, |
| 1425 | ) => |
| 1426 | Effect.gen(function* () { |
| 1427 | const context = yield* requireSession(threadId); |
| 1428 | const pending = context.pendingPermissions.get(requestId); |
| 1429 | if (!pending) { |
| 1430 | return yield* new ProviderAdapterRequestError({ |
| 1431 | provider: PROVIDER, |
| 1432 | method: "session/request_permission", |
| 1433 | detail: `Unknown pending permission request: ${requestId}`, |
| 1434 | }); |
| 1435 | } |
| 1436 | |
| 1437 | const optionId = selectCursorPermissionOption(pending.options, decision); |
| 1438 | |
| 1439 | if (!optionId) { |
| 1440 | return yield* new ProviderAdapterRequestError({ |
| 1441 | provider: PROVIDER, |
| 1442 | method: "session/request_permission", |
| 1443 | detail: `No selectable permission options for request: ${requestId}`, |
| 1444 | }); |
| 1445 | } |
| 1446 | |
| 1447 | writeCursorMessage(context, { |
| 1448 | jsonrpc: "2.0", |
| 1449 | id: pending.jsonRpcId, |
| 1450 | result: { |
| 1451 | outcome: { |
| 1452 | outcome: "selected", |
| 1453 | optionId, |
| 1454 | }, |
| 1455 | }, |
| 1456 | }); |
| 1457 | |
| 1458 | context.pendingPermissions.delete(requestId); |
| 1459 | |
| 1460 | const stamp = yield* makeEventStamp(); |
| 1461 | yield* offerRuntimeEvent({ |
| 1462 | type: "request.resolved", |
| 1463 | eventId: stamp.eventId, |
| 1464 | provider: PROVIDER, |
| 1465 | createdAt: stamp.createdAt, |
| 1466 | threadId: context.session.threadId, |
| 1467 | ...((context.turnState ? { turnId: context.turnState.turnId } : {})), |
| 1468 | requestId: asRuntimeRequestId(requestId), |
| 1469 | payload: { |
| 1470 | requestType: pending.requestType, |
| 1471 | decision, |
| 1472 | resolution: { |
| 1473 | optionId, |
| 1474 | }, |
| 1475 | }, |
| 1476 | providerRefs: { |
| 1477 | ...(context.turnState ? { providerTurnId: String(context.turnState.turnId) } : {}), |
| 1478 | providerRequestId: String(pending.jsonRpcId), |
| 1479 | }, |
| 1480 | raw: { |
| 1481 | source: "cursor.acp.response", |
| 1482 | method: "session/request_permission", |
| 1483 | payload: { |
| 1484 | optionId, |
| 1485 | }, |
| 1486 | }, |
| 1487 | }); |
| 1488 | }); |
| 1489 | |
| 1490 | const respondToUserInput: CursorAdapterShape["respondToUserInput"] = ( |
| 1491 | threadId, |
| 1492 | requestId, |
| 1493 | _answers, |
| 1494 | ) => |
| 1495 | Effect.fail( |
| 1496 | new ProviderAdapterRequestError({ |
| 1497 | provider: PROVIDER, |
| 1498 | method: "cursor/ask_question", |
| 1499 | detail: `Cursor does not yet support structured user-input responses for thread '${threadId}' and request '${requestId}'.`, |
| 1500 | }), |
| 1501 | ); |
| 1502 | |
| 1503 | const stopSession: CursorAdapterShape["stopSession"] = (threadId) => |
| 1504 | Effect.gen(function* () { |
| 1505 | const context = yield* requireSession(threadId); |
| 1506 | yield* stopSessionInternal(context, { |
| 1507 | emitExitEvent: true, |
| 1508 | }); |
| 1509 | }); |
| 1510 | |
| 1511 | const listSessions: CursorAdapterShape["listSessions"] = () => |
| 1512 | Effect.sync(() => Array.from(sessions.values(), ({ session }) => ({ ...session }))); |
| 1513 | |
| 1514 | const hasSession: CursorAdapterShape["hasSession"] = (threadId) => |
| 1515 | Effect.sync(() => { |
| 1516 | const context = sessions.get(threadId); |
| 1517 | return context !== undefined && !context.stopping; |
| 1518 | }); |
| 1519 | |
| 1520 | const stopAll: CursorAdapterShape["stopAll"] = () => |
| 1521 | Effect.forEach( |
| 1522 | sessions, |
| 1523 | ([, context]) => |
| 1524 | stopSessionInternal(context, { |
| 1525 | emitExitEvent: true, |
| 1526 | }), |
| 1527 | { discard: true }, |
| 1528 | ); |
| 1529 | |
| 1530 | yield* Effect.addFinalizer(() => |
| 1531 | Effect.forEach( |
| 1532 | sessions, |
| 1533 | ([, context]) => |
| 1534 | stopSessionInternal(context, { |
| 1535 | emitExitEvent: false, |
| 1536 | }), |
| 1537 | { discard: true }, |
| 1538 | ).pipe(Effect.tap(() => Queue.shutdown(runtimeEventQueue))), |
| 1539 | ); |
| 1540 | |
| 1541 | return { |
| 1542 | provider: PROVIDER, |
| 1543 | capabilities: { |
| 1544 | sessionModelSwitch: "unsupported", |
| 1545 | }, |
| 1546 | startSession, |
| 1547 | sendTurn, |
| 1548 | interruptTurn, |
| 1549 | readThread, |
| 1550 | rollbackThread, |
| 1551 | respondToRequest, |
| 1552 | respondToUserInput, |
| 1553 | stopSession, |
| 1554 | listSessions, |
| 1555 | hasSession, |
| 1556 | stopAll, |
| 1557 | streamEvents: Stream.fromQueue(runtimeEventQueue), |
| 1558 | } satisfies CursorAdapterShape; |
| 1559 | }); |
| 1560 | } |
| 1561 | |
| 1562 | export const CursorAdapterLive = Layer.effect(CursorAdapter, makeCursorAdapter()); |
| 1563 | |
| 1564 | export function makeCursorAdapterLive(options?: CursorAdapterLiveOptions) { |
| 1565 | return Layer.effect(CursorAdapter, makeCursorAdapter(options)); |
| 1566 | } |
Julius Marminge <julius0216@outlook.com> 2026-03-05 20:00:02-08:00
Julius Marminge <jmarminge@gmail.com> 2026-03-05 23:00:41-08:00