Archived
1075 lines
49 KiB
TypeScript
1075 lines
49 KiB
TypeScript
import { readFile, writeFile } from "node:fs/promises";
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import type { Api, Model } from "@earendil-works/pi-ai";
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import {
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AuthStorage,
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createAgentSessionFromServices,
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createAgentSessionRuntime,
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createAgentSessionServices,
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createEditToolDefinition,
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defineTool,
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getAgentDir,
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ModelRegistry,
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SessionManager,
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type CreateAgentSessionRuntimeFactory,
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type EditToolDetails,
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} from "@earendil-works/pi-coding-agent";
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import type { ClientArchiveSessionsResponse, ClientCommand, ClientCommandResult, ClientMessagePage, ClientSession, ClientSessionModel, ClientSessionStatus, ClientThinkingLevel, SessionUiEvent } from "../types.js";
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import { pageMessagesAtSafeBoundary } from "./messagePaging.js";
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import type { SessionEventHub } from "../realtime/sessionEventHub.js";
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import { BUILTIN_COMMANDS } from "./builtinCommands.js";
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import { SessionCommandService } from "./sessionCommandService.js";
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import { SessionArchiveStore, type ArchivedSessionRecord, type ArchiveSessionInput } from "./sessionArchiveStore.js";
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import { findArchiveCandidateByIdOrPrefix, planSessionArchiveTree, type SessionArchiveTreeCandidate } from "./sessionArchiveTree.js";
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import type { ActiveSession } from "./sessionRuntimeStore.js";
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import type { AuthChange } from "./authService.js";
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import { fallbackSessionName, generateShortSessionName } from "./sessionNameGenerator.js";
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import { computeEditPreview, type EditPreviewResult } from "./editPreview.js";
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import type { WorkspaceActivityService } from "../activity/workspaceActivityService.js";
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function noop(): void {
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// Intentionally empty default unsubscribe callback.
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}
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function authLossWarningKey(sessionId: string, provider: string, modelId: string): string {
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return `${sessionId}:${provider}/${modelId}`;
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}
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type SessionArchiveRepository = Pick<SessionArchiveStore, "list" | "get" | "archive" | "restore" | "isArchived">;
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interface PiSessionListEntry {
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id: string;
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path: string;
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cwd: string;
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created: Date;
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modified: Date;
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messageCount: number;
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firstMessage: string;
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allMessagesText: string;
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name?: string;
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parentSessionPath?: string;
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}
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interface WorkspaceArchiveCandidate extends SessionArchiveTreeCandidate {
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cwd: string;
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listEntry?: PiSessionListEntry;
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activeSession?: PiAgentSession;
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}
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type AgentModel = Model<Api>;
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type ModelRegistryInstance = ReturnType<typeof ModelRegistry.create>;
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export interface PiSessionManager {
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getCwd(): string;
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getBranch(): unknown[];
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getLeafId(): string | null;
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getHeader?(): { parentSession?: string } | null | undefined;
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}
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export interface PiSessionManagerGateway {
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list(cwd: string): Promise<PiSessionListEntry[]>;
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create(cwd: string): PiSessionManager;
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listAll(): Promise<PiSessionListEntry[]>;
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open(path: string): PiSessionManager;
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}
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export interface PiAgentSession {
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modelRegistry: ModelRegistryInstance;
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sessionManager: PiSessionManager;
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scopedModels: readonly { model: AgentModel; thinkingLevel?: ClientThinkingLevel }[];
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sessionId: string;
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sessionFile: string | undefined;
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sessionName: string | undefined;
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messages: readonly unknown[];
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model: AgentModel | undefined;
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thinkingLevel: ClientThinkingLevel;
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isStreaming: boolean;
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isCompacting: boolean;
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isBashRunning: boolean;
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pendingMessageCount: number;
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extensionRunner: { getRegisteredCommands(): readonly { invocationName: string; description?: string }[] };
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promptTemplates: readonly { name: string; description?: string }[];
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resourceLoader: { getSkills(): { skills: readonly { name: string; description?: string }[] } };
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subscribe(listener: (event: unknown) => void): () => void;
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compact(instructions?: string): Promise<{ summary: string; tokensBefore: number }>;
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getUserMessagesForForking(): readonly { entryId: string; text: string }[];
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getSessionStats(): { sessionId: string; totalMessages: number; userMessages: number; assistantMessages: number; toolCalls: number; tokens: ClientSessionStatus["tokens"]; cost: number };
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getContextUsage(): ClientSessionStatus["contextUsage"] | undefined;
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prompt(text: string, options?: { streamingBehavior?: "steer" | "followUp" }): Promise<void>;
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executeBash(command: string, onChunk?: (chunk: string) => void, options?: { excludeFromContext?: boolean }): Promise<{ output: string; exitCode: number | undefined; cancelled: boolean; truncated: boolean; fullOutputPath?: string }>;
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abort(): Promise<void>;
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clearQueue(): { steering: string[]; followUp: string[] };
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getSteeringMessages(): readonly string[];
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getFollowUpMessages(): readonly string[];
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setModel(model: AgentModel): Promise<void>;
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cycleModel(direction?: "forward" | "backward"): Promise<{ model: AgentModel } | undefined>;
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getAvailableThinkingLevels(): ClientThinkingLevel[];
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setThinkingLevel(level: ClientThinkingLevel): void;
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cycleThinkingLevel(): ClientThinkingLevel | undefined;
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setSessionName(name: string): void;
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}
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export interface PiSessionRuntime {
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readonly cwd: string;
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readonly session: PiAgentSession;
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setRebindSession(rebindSession?: (session: PiAgentSession) => Promise<void>): void;
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fork(entryId: string, options?: { position?: "before" | "at" }): Promise<{ cancelled: boolean; selectedText?: string }>;
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dispose(): Promise<void>;
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}
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interface CreateAgentRuntimeOptions {
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cwd: string;
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agentDir: string;
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sessionManager: PiSessionManager;
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}
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type CreateAgentRuntime = (createRuntime: CreateAgentSessionRuntimeFactory, options: CreateAgentRuntimeOptions) => Promise<PiSessionRuntime>;
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function defaultCreateAgentRuntime(createRuntime: CreateAgentSessionRuntimeFactory, options: CreateAgentRuntimeOptions): Promise<PiSessionRuntime> {
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if (!(options.sessionManager instanceof SessionManager)) throw new Error("Default runtime creation requires an SDK SessionManager");
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return createAgentSessionRuntime(createRuntime, { ...options, sessionManager: options.sessionManager });
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}
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function createDefaultRuntimeFactory(authStorage: AuthStorage, modelRegistry: ModelRegistryInstance): CreateAgentSessionRuntimeFactory {
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return async ({ cwd, agentDir, sessionManager, sessionStartEvent }) => {
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const services = await createAgentSessionServices({ cwd, agentDir, authStorage, modelRegistry });
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const customTools = [createPiWebEditToolDefinition(cwd)];
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const options = sessionStartEvent === undefined
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? { services, sessionManager, customTools }
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: { services, sessionManager, sessionStartEvent, customTools };
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const result = await createAgentSessionFromServices(options);
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return { ...result, services, diagnostics: services.diagnostics };
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};
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}
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type PiWebEditToolDetails = EditToolDetails | { preview: EditPreviewResult } | undefined;
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function createPiWebEditToolDefinition(cwd: string) {
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const editTool = createEditToolDefinition(cwd);
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return defineTool<typeof editTool.parameters, PiWebEditToolDetails>({
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name: editTool.name,
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label: editTool.label,
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description: editTool.description,
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...(editTool.promptSnippet === undefined ? {} : { promptSnippet: editTool.promptSnippet }),
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...(editTool.promptGuidelines === undefined ? {} : { promptGuidelines: editTool.promptGuidelines }),
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parameters: editTool.parameters,
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...(editTool.renderShell === undefined ? {} : { renderShell: editTool.renderShell }),
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...(editTool.prepareArguments === undefined ? {} : { prepareArguments: editTool.prepareArguments }),
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...(editTool.executionMode === undefined ? {} : { executionMode: editTool.executionMode }),
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async execute(toolCallId, params, signal, onUpdate, ctx) {
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const preview = await computeEditPreview(params.path, params.edits, cwd);
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if (signal?.aborted !== true) {
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onUpdate?.({ content: [{ type: "text", text: "Edit preview computed." }], details: { preview } });
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}
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return editTool.execute(toolCallId, params, signal, onUpdate, ctx);
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},
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});
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}
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export interface PiSessionServiceDependencies {
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archiveStore?: SessionArchiveRepository;
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agentDir?: string;
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sessionManager?: PiSessionManagerGateway;
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createRuntime?: CreateAgentSessionRuntimeFactory;
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createAgentRuntime?: CreateAgentRuntime;
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modelRegistry?: ModelRegistryInstance;
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heartbeatIntervalMs?: number;
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workspaceActivity?: Pick<WorkspaceActivityService, "applySessionStatus" | "applySessionActivity" | "removeSession" | "reconcileSessionActivity">;
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}
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export class PiSessionService {
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private readonly active = new Map<string, ActiveSession<PiSessionRuntime>>();
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private readonly activities = new Map<string, { phase: "active" | "idle" | "error"; label: string; detail?: string; at: string }>();
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private readonly heartbeat: NodeJS.Timeout;
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private readonly commandService: SessionCommandService<PiAgentSession>;
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private readonly authLossWarnings = new Set<string>();
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private readonly archiveStore: SessionArchiveRepository;
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private readonly agentDir: string;
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private readonly sessionManager: PiSessionManagerGateway;
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private readonly createRuntime: CreateAgentSessionRuntimeFactory;
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private readonly createAgentRuntime: CreateAgentRuntime;
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private readonly modelRegistry: ModelRegistryInstance;
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private readonly workspaceActivity: Pick<WorkspaceActivityService, "applySessionStatus" | "applySessionActivity" | "removeSession" | "reconcileSessionActivity"> | undefined;
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constructor(private readonly events: SessionEventHub, deps: PiSessionServiceDependencies = {}) {
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this.archiveStore = deps.archiveStore ?? new SessionArchiveStore();
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this.agentDir = deps.agentDir ?? getAgentDir();
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this.sessionManager = deps.sessionManager ?? SessionManager;
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this.modelRegistry = deps.modelRegistry ?? ModelRegistry.create(AuthStorage.create());
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this.createRuntime = deps.createRuntime ?? createDefaultRuntimeFactory(this.modelRegistry.authStorage, this.modelRegistry);
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this.createAgentRuntime = deps.createAgentRuntime ?? defaultCreateAgentRuntime;
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this.workspaceActivity = deps.workspaceActivity;
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this.heartbeat = setInterval(() => { this.publishHeartbeats(); }, deps.heartbeatIntervalMs ?? 2000);
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this.commandService = new SessionCommandService(
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(sessionId) => this.getActive(sessionId),
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(sessionId, text) => this.prompt(sessionId, text),
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events,
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{
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onCompactionStart: (session) => {
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this.publishActivity(session, "compacting", "active");
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this.publishStatus(session);
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},
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onCompactionEnd: (session, result, detail) => {
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this.publishActivity(session, result === "success" ? "compaction complete" : "compaction failed", result === "success" ? "idle" : "error", detail);
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this.publishStatus(session);
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},
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},
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{ listSessionNames: (cwd) => this.listSessionNames(cwd) },
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);
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}
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activeCount(): number {
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return this.active.size;
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}
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async dispose(): Promise<void> {
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clearInterval(this.heartbeat);
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const activeSessions = Array.from(new Set(this.active.values()));
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this.active.clear();
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this.activities.clear();
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this.authLossWarnings.clear();
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await Promise.all(activeSessions.map(async (active) => {
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active.unsubscribe();
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this.workspaceActivity?.removeSession(active.runtime.session.sessionId, active.runtime.session.sessionManager.getCwd());
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await active.runtime.session.abort();
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await active.runtime.dispose();
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}));
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}
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async list(cwd: string): Promise<ClientSession[]> {
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const [sessions, archivedRecords] = await Promise.all([this.sessionManager.list(cwd), this.archiveStore.list()]);
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const sessionsById = new Map(sessions.map((session) => [session.id, session]));
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const archivedForCwd = await Promise.all(
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archivedRecords
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.filter((record) => record.cwd === cwd)
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.map((record) => this.ensureArchivedSessionMoved(record, sessionsById.get(record.sessionId))),
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);
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const archivedById = new Map(archivedForCwd.map((record) => [record.sessionId, record]));
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const unarchivedSessions = sessions.filter((session) => !archivedById.has(session.id)).map(clientSessionFromListEntry);
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this.workspaceActivity?.reconcileSessionActivity(cwd, this.reconcilableSessionIds(cwd, unarchivedSessions.map((session) => session.id), archivedById));
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const archivedSessions = archivedForCwd
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.sort(compareArchivedRecords)
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.map((record) => clientSessionFromArchivedRecord(record, sessionsById.get(record.sessionId)))
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.filter(isDefined);
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return [...unarchivedSessions, ...archivedSessions];
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}
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async start(cwd: string): Promise<ClientSession> {
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const active = await this.create(this.sessionManager.create(cwd), cwd);
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const { session } = active.runtime;
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return {
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id: session.sessionId,
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path: session.sessionFile ?? "",
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cwd,
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created: new Date().toISOString(),
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modified: new Date().toISOString(),
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messageCount: session.messages.length,
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firstMessage: "",
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};
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}
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async messages(sessionId: string, page?: { before?: number; limit?: number }): Promise<unknown[] | ClientMessagePage> {
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const session = await this.getOrOpen(sessionId);
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return pageMessagesAtSafeBoundary(historyMessages(session), page);
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}
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async status(sessionId: string): Promise<ClientSessionStatus> {
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return this.statusFromSession(await this.getOrOpen(sessionId));
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}
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async availableModels(sessionId: string): Promise<ClientSessionModel[]> {
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const session = await this.getOrOpen(sessionId);
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session.modelRegistry.refresh();
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const models = session.scopedModels.length > 0
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? session.scopedModels.map((scoped) => scoped.model)
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: session.modelRegistry.getAvailable();
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return models.map(modelToClientModel);
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}
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async setModel(sessionId: string, provider: string, modelId: string): Promise<ClientSessionStatus> {
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await this.assertWritable(sessionId);
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const session = await this.getOrOpen(sessionId);
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session.modelRegistry.refresh();
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const candidates = session.scopedModels.length > 0
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? session.scopedModels.map((scoped) => scoped.model)
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: session.modelRegistry.getAvailable();
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const model = candidates.find((candidate) => candidate.provider === provider && candidate.id === modelId)
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?? session.modelRegistry.find(provider, modelId);
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if (model === undefined) throw new Error(`Model not found: ${provider}/${modelId}`);
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await session.setModel(model);
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this.publishActivity(session, `model: ${model.id}`, "idle", model.provider);
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this.publishStatus(session);
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return this.statusFromSession(session);
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}
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async cycleModel(sessionId: string, direction: "forward" | "backward"): Promise<ClientSessionStatus> {
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await this.assertWritable(sessionId);
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const session = await this.getOrOpen(sessionId);
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const result = await session.cycleModel(direction);
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if (result === undefined) throw new Error(session.scopedModels.length > 0 ? "Only one model in scope" : "Only one model available");
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this.publishActivity(session, `model: ${result.model.id}`, "idle", result.model.provider);
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this.publishStatus(session);
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return this.statusFromSession(session);
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}
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async availableThinkingLevels(sessionId: string): Promise<ClientThinkingLevel[]> {
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const session = await this.getOrOpen(sessionId);
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return session.getAvailableThinkingLevels();
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}
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async setThinkingLevel(sessionId: string, level: ClientThinkingLevel): Promise<ClientSessionStatus> {
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await this.assertWritable(sessionId);
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const session = await this.getOrOpen(sessionId);
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session.setThinkingLevel(level);
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this.publishActivity(session, `thinking: ${session.thinkingLevel}`, "idle");
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this.publishStatus(session);
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return this.statusFromSession(session);
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}
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async cycleThinkingLevel(sessionId: string): Promise<ClientSessionStatus> {
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await this.assertWritable(sessionId);
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const session = await this.getOrOpen(sessionId);
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const level = session.cycleThinkingLevel();
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if (level === undefined) throw new Error("Current model does not support thinking");
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this.publishActivity(session, `thinking: ${level}`, "idle");
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this.publishStatus(session);
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return this.statusFromSession(session);
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}
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async commands(sessionId: string): Promise<ClientCommand[]> {
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const session = await this.getOrOpen(sessionId);
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const commands: ClientCommand[] = [...BUILTIN_COMMANDS];
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for (const command of session.extensionRunner.getRegisteredCommands()) {
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commands.push({ name: command.invocationName, ...(command.description === undefined ? {} : { description: command.description }), source: "extension" });
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}
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for (const template of session.promptTemplates) {
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commands.push({ name: template.name, ...(template.description === undefined ? {} : { description: template.description }), source: "prompt" });
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}
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for (const skill of session.resourceLoader.getSkills().skills) {
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commands.push({ name: `skill:${skill.name}`, ...(skill.description === undefined ? {} : { description: skill.description }), source: "skill" });
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}
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return commands.sort((a, b) => a.name.localeCompare(b.name));
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}
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async prompt(sessionId: string, text: string, streamingBehavior?: "steer" | "followUp"): Promise<void> {
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await this.assertWritable(sessionId);
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const session = await this.getOrOpen(sessionId);
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this.maybeGenerateSessionName(session, text);
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const isQueued = session.isStreaming || session.isCompacting;
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const behavior = isQueued ? streamingBehavior ?? "followUp" : undefined;
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if (isQueued && hasQueuedMessageText(session, text)) {
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this.publishActivity(session, "duplicate queued message ignored", "active");
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this.publishStatus(session);
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return;
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}
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this.publishActivity(session, session.isCompacting ? "message queued during compaction" : behavior === "steer" ? "steering queued" : behavior === "followUp" ? "message queued" : "prompt accepted", "active");
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if (!isQueued) this.events.publish(sessionId, { type: "message.append", message: userTextMessage(text) });
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void session.prompt(text, behavior === undefined ? undefined : { streamingBehavior: behavior }).catch((error: unknown) => {
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const message = error instanceof Error ? error.message : String(error);
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this.publishActivity(session, "error", "error", message);
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this.events.publish(sessionId, { type: "session.error", message });
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});
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}
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async shell(sessionId: string, text: string): Promise<void> {
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await this.assertWritable(sessionId);
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const active = await this.getActive(sessionId);
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const { session } = active.runtime;
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const isExcluded = text.startsWith("!!");
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const command = (isExcluded ? text.slice(2) : text.slice(1)).trim();
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if (!command) throw new Error("Usage: !<shell command>");
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if (session.isBashRunning) throw new Error("A bash command is already running");
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this.publishActivity(session, "running bash", "active", command);
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this.events.publish(session.sessionId, { type: "shell.start", command, excludeFromContext: isExcluded });
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void session.executeBash(command, (chunk) => {
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this.events.publish(session.sessionId, { type: "shell.chunk", chunk });
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this.publishActivity(session, "running bash", "active", command);
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this.publishStatus(session);
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}, { excludeFromContext: isExcluded }).then((result) => {
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this.events.publish(session.sessionId, {
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type: "shell.end",
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output: result.output,
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...(result.exitCode === undefined ? {} : { exitCode: result.exitCode }),
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cancelled: result.cancelled,
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truncated: result.truncated,
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...(result.fullOutputPath === undefined ? {} : { fullOutputPath: result.fullOutputPath }),
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});
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this.publishActivity(session, "bash complete", result.exitCode === 0 ? "idle" : "error", command);
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this.publishStatus(session);
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}).catch((error: unknown) => {
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const message = error instanceof Error ? error.message : String(error);
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this.events.publish(session.sessionId, { type: "shell.end", output: message, isError: true });
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this.events.publish(session.sessionId, { type: "session.error", message });
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this.publishActivity(session, "bash failed", "error", message);
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this.publishStatus(session);
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});
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}
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async runCommand(sessionId: string, text: string): Promise<ClientCommandResult> {
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await this.assertWritable(sessionId);
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return this.commandService.run(sessionId, text);
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}
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async respondToCommand(sessionId: string, requestId: string, value: string): Promise<ClientCommandResult> {
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await this.assertWritable(sessionId);
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return this.commandService.respond(sessionId, requestId, value);
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}
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async archive(sessionId: string): Promise<void> {
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const session = await this.getOrOpen(sessionId);
|
|
if (sessionHasActiveWork(session)) throw new Error("Stop current session activity before archiving");
|
|
const archiveInput = await this.archiveInputForSession(session);
|
|
await this.closeActive(session.sessionId);
|
|
await this.archiveStore.archive(archiveInput);
|
|
}
|
|
|
|
async archiveTree(sessionId: string): Promise<ClientArchiveSessionsResponse> {
|
|
const session = await this.getOrOpen(sessionId);
|
|
const catalog = await this.workspaceArchiveCandidates(session.sessionManager.getCwd());
|
|
const root = findArchiveCandidateByIdOrPrefix(catalog, session.sessionId) ?? archiveCandidateFromActiveSession(session, false);
|
|
const plan = planSessionArchiveTree(root, catalog);
|
|
const busy = plan.targets.map((target) => target.activeSession).find((target) => target !== undefined && sessionHasActiveWork(target));
|
|
if (busy !== undefined) throw new Error(`Stop current session activity before archiving ${sessionDisplayName(busy)}`);
|
|
|
|
const archiveInputs = plan.unarchivedTargets.map((target) => archiveInputFromCandidate(target));
|
|
for (const input of archiveInputs) await this.closeActive(input.sessionId);
|
|
for (const input of archiveInputs) await this.archiveStore.archive(input);
|
|
|
|
return {
|
|
archived: true,
|
|
sessionIds: archiveInputs.map((input) => input.sessionId),
|
|
archivedCount: archiveInputs.length,
|
|
skippedAlreadyArchivedCount: plan.skippedAlreadyArchivedCount,
|
|
};
|
|
}
|
|
|
|
async restore(sessionId: string): Promise<void> {
|
|
await this.closeActive(sessionId);
|
|
await this.archiveStore.restore(sessionId);
|
|
}
|
|
|
|
async detachParent(sessionId: string): Promise<void> {
|
|
const session = await this.getOrOpen(sessionId);
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
await clearParentSession(sessionFile);
|
|
}
|
|
|
|
async abort(sessionId: string): Promise<void> {
|
|
const active = this.active.get(sessionId);
|
|
if (!active) return;
|
|
clearSessionQueue(active.runtime.session);
|
|
await active.runtime.session.abort();
|
|
this.publishActivity(active.runtime.session, "stopped", "idle");
|
|
this.publishStatus(active.runtime.session);
|
|
}
|
|
|
|
stop(sessionId: string): void {
|
|
void this.closeActive(sessionId).catch(() => {
|
|
// Best-effort shutdown; callers that need errors await closeActive directly.
|
|
});
|
|
}
|
|
|
|
private reconcilableSessionIds(cwd: string, listedSessionIds: string[], archivedById: Map<string, ArchivedSessionRecord>): string[] {
|
|
const sessionIds = new Set(listedSessionIds);
|
|
for (const active of new Set(this.active.values())) {
|
|
const session = active.runtime.session;
|
|
if (session.sessionManager.getCwd() === cwd && !archivedById.has(session.sessionId)) sessionIds.add(session.sessionId);
|
|
}
|
|
return [...sessionIds];
|
|
}
|
|
|
|
private async ensureArchivedSessionMoved(record: ArchivedSessionRecord, session: PiSessionListEntry | undefined): Promise<ArchivedSessionRecord> {
|
|
if (session === undefined || this.active.has(record.sessionId)) return record;
|
|
try {
|
|
return await this.archiveStore.archive(archiveInputFromListEntry(session));
|
|
} catch {
|
|
return record;
|
|
}
|
|
}
|
|
|
|
private async archiveInputForSession(session: PiAgentSession): Promise<ArchiveSessionInput> {
|
|
const cwd = session.sessionManager.getCwd();
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
const listed = (await this.sessionManager.list(cwd)).find((candidate) => candidate.id === session.sessionId);
|
|
if (listed !== undefined) return archiveInputFromListEntry(listed);
|
|
return archiveInputFromActiveSession(session);
|
|
}
|
|
|
|
private async workspaceArchiveCandidates(cwd: string): Promise<WorkspaceArchiveCandidate[]> {
|
|
const [sessions, archivedRecords] = await Promise.all([this.sessionManager.list(cwd), this.archiveStore.list()]);
|
|
const candidates = new Map<string, WorkspaceArchiveCandidate>();
|
|
const archivedById = new Map<string, ArchivedSessionRecord>();
|
|
|
|
for (const record of archivedRecords) {
|
|
if (record.cwd === cwd) archivedById.set(record.sessionId, record);
|
|
}
|
|
|
|
for (const session of sessions) {
|
|
const archived = archivedById.get(session.id);
|
|
if (archived === undefined) candidates.set(session.id, archiveCandidateFromListEntry(session));
|
|
else {
|
|
const candidate = archiveCandidateFromArchivedRecord(archived, session);
|
|
if (candidate !== undefined) candidates.set(candidate.id, candidate);
|
|
}
|
|
}
|
|
|
|
for (const record of archivedById.values()) {
|
|
if (candidates.has(record.sessionId)) continue;
|
|
const candidate = archiveCandidateFromArchivedRecord(record, undefined);
|
|
if (candidate !== undefined) candidates.set(candidate.id, candidate);
|
|
}
|
|
|
|
for (const active of new Set(this.active.values())) {
|
|
const session = active.runtime.session;
|
|
if (session.sessionManager.getCwd() !== cwd || archivedById.has(session.sessionId)) continue;
|
|
const existing = candidates.get(session.sessionId);
|
|
candidates.set(session.sessionId, { ...(existing ?? archiveCandidateFromActiveSession(session, false)), activeSession: session });
|
|
}
|
|
|
|
return [...candidates.values()];
|
|
}
|
|
|
|
private async listSessionNames(cwd: string): Promise<string[]> {
|
|
const [sessions, archivedRecords] = await Promise.all([this.sessionManager.list(cwd), this.archiveStore.list()]);
|
|
const names = new Set<string>();
|
|
for (const session of sessions) addSessionName(names, session.name);
|
|
for (const record of archivedRecords) {
|
|
if (record.cwd === cwd) addSessionName(names, record.name);
|
|
}
|
|
for (const active of new Set(this.active.values())) {
|
|
const session = active.runtime.session;
|
|
if (session.sessionManager.getCwd() === cwd) addSessionName(names, session.sessionName);
|
|
}
|
|
return [...names];
|
|
}
|
|
|
|
private async closeActive(sessionId: string): Promise<void> {
|
|
const active = this.active.get(sessionId);
|
|
if (!active) return;
|
|
this.active.delete(sessionId);
|
|
this.activities.delete(sessionId);
|
|
this.workspaceActivity?.removeSession(sessionId, active.runtime.session.sessionManager.getCwd());
|
|
this.clearAuthLossWarningsForSession(sessionId);
|
|
clearSessionQueue(active.runtime.session);
|
|
active.unsubscribe();
|
|
try {
|
|
await active.runtime.session.abort();
|
|
} finally {
|
|
await active.runtime.dispose();
|
|
}
|
|
}
|
|
|
|
private async assertWritable(sessionId: string): Promise<void> {
|
|
if (await this.archiveStore.isArchived(sessionId)) throw new Error("Archived sessions are read-only. Restore the session to continue.");
|
|
}
|
|
|
|
private async getOrOpen(sessionId: string): Promise<PiAgentSession> {
|
|
return (await this.getActive(sessionId)).runtime.session;
|
|
}
|
|
|
|
private async getActive(sessionId: string): Promise<ActiveSession<PiSessionRuntime>> {
|
|
const active = this.active.get(sessionId);
|
|
if (active) return active;
|
|
|
|
const archived = await this.archiveStore.get(sessionId);
|
|
if (archived?.archivePath !== undefined) return this.create(this.sessionManager.open(archived.archivePath), archived.cwd);
|
|
|
|
const match = (await this.sessionManager.listAll()).find((s) => s.id === sessionId || s.id.startsWith(sessionId));
|
|
if (!match) throw new Error("Session not found");
|
|
return this.create(this.sessionManager.open(match.path), match.cwd);
|
|
}
|
|
|
|
private async create(sessionManager: PiSessionManager, cwd: string): Promise<ActiveSession<PiSessionRuntime>> {
|
|
const runtime = await this.createAgentRuntime(this.createRuntime, { cwd, agentDir: this.agentDir, sessionManager });
|
|
const active: ActiveSession<PiSessionRuntime> = { runtime, unsubscribe: noop };
|
|
this.bindRuntime(active);
|
|
runtime.setRebindSession(() => {
|
|
this.bindRuntime(active);
|
|
return Promise.resolve();
|
|
});
|
|
this.active.set(runtime.session.sessionId, active);
|
|
this.publishStatus(runtime.session);
|
|
return active;
|
|
}
|
|
|
|
private bindRuntime(active: ActiveSession<PiSessionRuntime>): void {
|
|
active.unsubscribe();
|
|
for (const [sessionId, candidate] of this.active.entries()) {
|
|
if (candidate === active) this.active.delete(sessionId);
|
|
}
|
|
const { session } = active.runtime;
|
|
active.unsubscribe = session.subscribe((event) => {
|
|
this.events.publish(session.sessionId, toClientEvent(event));
|
|
this.publishActivityForEvent(session, event);
|
|
this.publishStatus(session);
|
|
});
|
|
this.active.set(session.sessionId, active);
|
|
}
|
|
|
|
private maybeGenerateSessionName(session: PiAgentSession, firstMessage: string): void {
|
|
if (session.sessionName !== undefined || session.messages.length !== 0 || session.isStreaming || session.isCompacting) return;
|
|
const model = session.model;
|
|
if (model === undefined) return;
|
|
|
|
void generateShortSessionName(this.modelRegistry, model, firstMessage).then((name) => {
|
|
this.applyGeneratedSessionName(session, name ?? fallbackSessionName(firstMessage));
|
|
}).catch(() => {
|
|
this.applyGeneratedSessionName(session, fallbackSessionName(firstMessage));
|
|
});
|
|
}
|
|
|
|
private applyGeneratedSessionName(session: PiAgentSession, name: string | undefined): void {
|
|
if (name === undefined || session.sessionName !== undefined) return;
|
|
session.setSessionName(name);
|
|
this.publishSessionName(session);
|
|
}
|
|
|
|
applyAuthChange(change: AuthChange = {}): void {
|
|
this.modelRegistry.refresh();
|
|
for (const active of this.active.values()) {
|
|
const { session } = active.runtime;
|
|
session.modelRegistry.refresh();
|
|
this.syncCurrentModelAuthWarning(session, change.removedProviderId);
|
|
this.publishStatus(session);
|
|
}
|
|
}
|
|
|
|
private syncCurrentModelAuthWarning(session: PiAgentSession, removedProviderId: string | undefined): void {
|
|
const model = session.model;
|
|
if (model === undefined) return;
|
|
if (model.provider === "unknown" && model.id === "unknown") return;
|
|
const warningKey = authLossWarningKey(session.sessionId, model.provider, model.id);
|
|
const registered = session.modelRegistry.find(model.provider, model.id);
|
|
if (registered === undefined) return;
|
|
if (session.modelRegistry.hasConfiguredAuth(registered)) {
|
|
this.authLossWarnings.delete(warningKey);
|
|
return;
|
|
}
|
|
if (removedProviderId === undefined || model.provider !== removedProviderId || this.authLossWarnings.has(warningKey)) return;
|
|
this.authLossWarnings.add(warningKey);
|
|
this.events.publish(session.sessionId, {
|
|
type: "command.output",
|
|
level: "error",
|
|
message: `Authentication for ${model.provider}/${model.id} was removed. Use /model to select another model.`,
|
|
});
|
|
}
|
|
|
|
private clearAuthLossWarningsForSession(sessionId: string): void {
|
|
const prefix = `${sessionId}:`;
|
|
for (const key of this.authLossWarnings) {
|
|
if (key.startsWith(prefix)) this.authLossWarnings.delete(key);
|
|
}
|
|
}
|
|
|
|
private publishSessionName(session: PiAgentSession): void {
|
|
const event = session.sessionName === undefined
|
|
? { type: "session.name", sessionId: session.sessionId } as const
|
|
: { type: "session.name", sessionId: session.sessionId, name: session.sessionName } as const;
|
|
this.events.publish(session.sessionId, event);
|
|
this.events.publishGlobal(event);
|
|
}
|
|
|
|
private publishHeartbeats(): void {
|
|
for (const active of this.active.values()) {
|
|
const { session } = active.runtime;
|
|
const activity = this.activities.get(session.sessionId);
|
|
if (!sessionHasActiveWork(session)) {
|
|
if (activity?.phase === "active") this.publishStatus(session);
|
|
continue;
|
|
}
|
|
this.publishStatus(session);
|
|
if (activity?.phase === "active") this.publishActivity(session, activity.label, "active", activity.detail);
|
|
else this.publishActivity(session, this.activityLabelFromStatus(session), "active");
|
|
}
|
|
}
|
|
|
|
private activityLabelFromStatus(session: PiAgentSession): string {
|
|
if (session.isCompacting) return "compacting";
|
|
if (session.isBashRunning) return "running bash";
|
|
if (session.isStreaming) return "agent running";
|
|
if (session.pendingMessageCount) return "queued";
|
|
return "active";
|
|
}
|
|
|
|
private publishActivityForEvent(session: PiAgentSession, event: unknown): void {
|
|
const eventType = getString(event, "type");
|
|
if (eventType === undefined) return;
|
|
if (eventType === "agent_start") { this.publishActivity(session, "agent running", "active"); return; }
|
|
if (eventType === "agent_end") {
|
|
this.publishActivity(session, "idle", "idle");
|
|
setTimeout(() => {
|
|
this.publishActivity(session, "idle", "idle");
|
|
this.publishStatus(session);
|
|
}, 250);
|
|
return;
|
|
}
|
|
if (eventType === "turn_end") { this.publishActivity(session, "turn complete", "idle"); return; }
|
|
if (eventType === "message_start") { this.publishActivity(session, "message started", "active"); return; }
|
|
if (eventType === "message_end") { this.publishActivity(session, "message complete", "idle"); return; }
|
|
if (eventType === "message_update") { this.publishActivity(session, "receiving response", "active"); return; }
|
|
if (eventType === "tool_execution_start") { this.publishActivity(session, "running tool", "active", getString(event, "toolName")); return; }
|
|
if (eventType === "tool_execution_end") {
|
|
const isError = getBoolean(event, "isError") === true;
|
|
this.publishActivity(session, isError ? "tool failed" : "tool complete", isError ? "error" : "idle", getString(event, "toolName"));
|
|
return;
|
|
}
|
|
if (eventType === "bash_execution_start") { this.publishActivity(session, "running bash", "active"); return; }
|
|
if (eventType === "bash_execution_end") { this.publishActivity(session, "bash complete", "idle"); return; }
|
|
if (sessionHasActiveWork(session)) this.publishActivity(session, eventType.replaceAll("_", " "), "active");
|
|
}
|
|
|
|
private publishActivity(session: PiAgentSession, label: string, phase: "active" | "idle" | "error", detail?: string): void {
|
|
const at = new Date().toISOString();
|
|
const stored = detail === undefined ? { phase, label, at } : { phase, label, detail, at };
|
|
this.activities.set(session.sessionId, stored);
|
|
const activity = detail === undefined ? { sessionId: session.sessionId, phase, label, at } : { sessionId: session.sessionId, phase, label, detail, at };
|
|
this.workspaceActivity?.applySessionActivity(session.sessionManager.getCwd(), activity);
|
|
this.events.publish(session.sessionId, { type: "activity.update", activity });
|
|
this.events.publishGlobal({ type: "activity.update", activity });
|
|
}
|
|
|
|
private publishStatus(session: PiAgentSession): void {
|
|
const status = this.statusFromSession(session);
|
|
this.clearStaleActiveActivity(session);
|
|
this.workspaceActivity?.applySessionStatus(session.sessionManager.getCwd(), status);
|
|
this.events.publish(session.sessionId, { type: "status.update", status });
|
|
this.events.publishGlobal({ type: "status.update", status });
|
|
}
|
|
|
|
private clearStaleActiveActivity(session: PiAgentSession): void {
|
|
const current = this.activities.get(session.sessionId);
|
|
if (current?.phase !== "active" || sessionHasActiveWork(session)) return;
|
|
const at = new Date().toISOString();
|
|
const stored = { phase: "idle" as const, label: "idle", at };
|
|
this.activities.set(session.sessionId, stored);
|
|
const activity = { sessionId: session.sessionId, ...stored };
|
|
this.events.publish(session.sessionId, { type: "activity.update", activity });
|
|
this.events.publishGlobal({ type: "activity.update", activity });
|
|
}
|
|
|
|
private statusFromSession(session: PiAgentSession): ClientSessionStatus {
|
|
const stats = session.getSessionStats();
|
|
const model = session.model === undefined ? undefined : modelToClientModel(session.model);
|
|
const contextUsage = session.getContextUsage();
|
|
return {
|
|
sessionId: session.sessionId,
|
|
...(model === undefined ? {} : { model }),
|
|
thinkingLevel: session.thinkingLevel,
|
|
isStreaming: session.isStreaming,
|
|
isCompacting: session.isCompacting,
|
|
isBashRunning: session.isBashRunning,
|
|
pendingMessageCount: session.pendingMessageCount,
|
|
queuedMessages: queuedMessagesFromSession(session),
|
|
tokens: stats.tokens,
|
|
cost: stats.cost,
|
|
...(contextUsage === undefined ? {} : { contextUsage }),
|
|
};
|
|
}
|
|
}
|
|
|
|
function modelToClientModel(model: PiAgentSession["model"]): ClientSessionModel {
|
|
if (model === undefined) return {};
|
|
const name = getString(model, "name");
|
|
const reasoning = getProperty(model, "reasoning");
|
|
return {
|
|
provider: model.provider,
|
|
id: model.id,
|
|
...(name === undefined ? {} : { name }),
|
|
contextWindow: model.contextWindow,
|
|
...(reasoning === undefined ? {} : { reasoning }),
|
|
};
|
|
}
|
|
|
|
function clientSessionFromListEntry(session: PiSessionListEntry): ClientSession {
|
|
return {
|
|
id: session.id,
|
|
path: session.path,
|
|
cwd: session.cwd,
|
|
...(session.name === undefined ? {} : { name: session.name }),
|
|
created: session.created.toISOString(),
|
|
modified: session.modified.toISOString(),
|
|
messageCount: session.messageCount,
|
|
firstMessage: session.firstMessage,
|
|
...(session.parentSessionPath === undefined ? {} : { parentSessionPath: session.parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveInputFromListEntry(session: PiSessionListEntry): ArchiveSessionInput {
|
|
return {
|
|
sessionId: session.id,
|
|
cwd: session.cwd,
|
|
path: session.path,
|
|
created: session.created.toISOString(),
|
|
modified: session.modified.toISOString(),
|
|
messageCount: session.messageCount,
|
|
firstMessage: session.firstMessage,
|
|
...(session.name === undefined ? {} : { name: session.name }),
|
|
...(session.parentSessionPath === undefined ? {} : { parentSessionPath: session.parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveInputFromActiveSession(session: PiAgentSession): ArchiveSessionInput {
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
const parentSessionPath = session.sessionManager.getHeader?.()?.parentSession;
|
|
return {
|
|
sessionId: session.sessionId,
|
|
cwd: session.sessionManager.getCwd(),
|
|
path: sessionFile,
|
|
created: new Date().toISOString(),
|
|
modified: new Date().toISOString(),
|
|
messageCount: session.messages.length,
|
|
firstMessage: "",
|
|
...(session.sessionName === undefined ? {} : { name: session.sessionName }),
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveCandidateFromListEntry(session: PiSessionListEntry): WorkspaceArchiveCandidate {
|
|
return {
|
|
id: session.id,
|
|
path: session.path,
|
|
cwd: session.cwd,
|
|
archived: false,
|
|
listEntry: session,
|
|
...(session.parentSessionPath === undefined ? {} : { parentSessionPath: session.parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveCandidateFromArchivedRecord(record: ArchivedSessionRecord, fallback: PiSessionListEntry | undefined): WorkspaceArchiveCandidate | undefined {
|
|
const path = record.originalPath ?? fallback?.path;
|
|
if (path === undefined) return undefined;
|
|
const parentSessionPath = record.parentSessionPath ?? fallback?.parentSessionPath;
|
|
return {
|
|
id: record.sessionId,
|
|
path,
|
|
cwd: record.cwd,
|
|
archived: true,
|
|
...(fallback === undefined ? {} : { listEntry: fallback }),
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveCandidateFromActiveSession(session: PiAgentSession, archived: boolean): WorkspaceArchiveCandidate {
|
|
const sessionFile = session.sessionFile;
|
|
if (sessionFile === undefined || sessionFile === "") throw new Error("Session is not persisted");
|
|
const parentSessionPath = session.sessionManager.getHeader?.()?.parentSession;
|
|
return {
|
|
id: session.sessionId,
|
|
path: sessionFile,
|
|
cwd: session.sessionManager.getCwd(),
|
|
archived,
|
|
activeSession: session,
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
};
|
|
}
|
|
|
|
function archiveInputFromCandidate(candidate: WorkspaceArchiveCandidate): ArchiveSessionInput {
|
|
if (candidate.listEntry !== undefined) return archiveInputFromListEntry(candidate.listEntry);
|
|
if (candidate.activeSession !== undefined) return archiveInputFromActiveSession(candidate.activeSession);
|
|
throw new Error(`Session is not available for archiving: ${candidate.id}`);
|
|
}
|
|
|
|
function sessionHasActiveWork(session: PiAgentSession): boolean {
|
|
return session.isStreaming || session.isCompacting || session.isBashRunning || session.pendingMessageCount > 0;
|
|
}
|
|
|
|
function sessionDisplayName(session: PiAgentSession): string {
|
|
return session.sessionName ?? session.sessionId;
|
|
}
|
|
|
|
function clientSessionFromArchivedRecord(record: ArchivedSessionRecord, fallback: PiSessionListEntry | undefined): ClientSession | undefined {
|
|
const path = record.originalPath ?? fallback?.path;
|
|
const created = record.created ?? fallback?.created.toISOString();
|
|
const modified = record.modified ?? fallback?.modified.toISOString();
|
|
const messageCount = record.messageCount ?? fallback?.messageCount;
|
|
const firstMessage = record.firstMessage ?? fallback?.firstMessage;
|
|
if (path === undefined || created === undefined || modified === undefined || messageCount === undefined || firstMessage === undefined) return undefined;
|
|
const name = record.name ?? fallback?.name;
|
|
const parentSessionPath = record.parentSessionPath ?? fallback?.parentSessionPath;
|
|
return {
|
|
id: record.sessionId,
|
|
path,
|
|
cwd: record.cwd,
|
|
...(name === undefined ? {} : { name }),
|
|
created,
|
|
modified,
|
|
messageCount,
|
|
firstMessage,
|
|
...(parentSessionPath === undefined ? {} : { parentSessionPath }),
|
|
archived: true,
|
|
archivedAt: record.archivedAt,
|
|
};
|
|
}
|
|
|
|
function addSessionName(names: Set<string>, name: string | undefined): void {
|
|
const trimmed = name?.replace(/\s+/g, " ").trim();
|
|
if (trimmed !== undefined && trimmed !== "") names.add(trimmed);
|
|
}
|
|
|
|
function compareArchivedRecords(a: ArchivedSessionRecord, b: ArchivedSessionRecord): number {
|
|
return archivedTimestamp(b) - archivedTimestamp(a);
|
|
}
|
|
|
|
function archivedTimestamp(record: ArchivedSessionRecord): number {
|
|
const time = Date.parse(record.archivedAt);
|
|
return Number.isNaN(time) ? 0 : time;
|
|
}
|
|
|
|
function isDefined<T>(value: T | undefined): value is T {
|
|
return value !== undefined;
|
|
}
|
|
|
|
async function clearParentSession(sessionFile: string): Promise<void> {
|
|
const content = await readFile(sessionFile, "utf8");
|
|
const newlineIndex = content.indexOf("\n");
|
|
const firstLine = newlineIndex === -1 ? content : content.slice(0, newlineIndex);
|
|
const rest = newlineIndex === -1 ? "" : content.slice(newlineIndex);
|
|
const header: unknown = JSON.parse(firstLine);
|
|
if (!isRecord(header) || header["type"] !== "session") throw new Error("Invalid session file header");
|
|
if (header["parentSession"] === undefined) return;
|
|
delete header["parentSession"];
|
|
await writeFile(sessionFile, `${JSON.stringify(header)}${rest}`, "utf8");
|
|
}
|
|
|
|
function clearSessionQueue(session: PiAgentSession): void {
|
|
session.clearQueue();
|
|
}
|
|
|
|
function hasQueuedMessageText(session: PiAgentSession, text: string): boolean {
|
|
return queuedMessagesFromSession(session).some((message) => message.text === text);
|
|
}
|
|
|
|
function queuedMessagesFromSession(session: PiAgentSession): { kind: "steer" | "followUp"; text: string }[] {
|
|
return [
|
|
...session.getSteeringMessages().map((text) => ({ kind: "steer" as const, text })),
|
|
...session.getFollowUpMessages().map((text) => ({ kind: "followUp" as const, text })),
|
|
];
|
|
}
|
|
|
|
function userTextMessage(text: string): { role: "user"; content: string } {
|
|
return { role: "user", content: text };
|
|
}
|
|
|
|
function stringValue(value: unknown): string {
|
|
return typeof value === "string" ? value : "";
|
|
}
|
|
|
|
function historyMessages(session: PiAgentSession): unknown[] {
|
|
const messages: unknown[] = [];
|
|
for (const entry of session.sessionManager.getBranch()) {
|
|
if (!isRecord(entry)) continue;
|
|
if (entry["type"] === "message") messages.push(entry["message"]);
|
|
else if (entry["type"] === "custom_message" && entry["display"] === true) messages.push({ role: "custom", content: entry["content"], customType: entry["customType"], details: entry["details"] });
|
|
else if (entry["type"] === "compaction") messages.push({ role: "system", source: "compaction", content: `Compacted history:\n\n${stringValue(entry["summary"])}` });
|
|
else if (entry["type"] === "branch_summary") messages.push({ role: "system", source: "branch_summary", content: `Branch summary:\n\n${stringValue(entry["summary"])}` });
|
|
}
|
|
return messages;
|
|
}
|
|
|
|
function toClientEvent(event: unknown): SessionUiEvent {
|
|
const eventType = getString(event, "type");
|
|
const assistantMessageEvent = getProperty(event, "assistantMessageEvent");
|
|
if (eventType === "message_update" && getString(assistantMessageEvent, "type") === "text_delta") {
|
|
return { type: "assistant.delta", text: getString(assistantMessageEvent, "delta") ?? "" };
|
|
}
|
|
if (eventType === "message_update" && getString(assistantMessageEvent, "type") === "thinking_delta") {
|
|
return { type: "assistant.thinking.delta", text: getString(assistantMessageEvent, "delta") ?? "" };
|
|
}
|
|
if (eventType === "tool_execution_start") {
|
|
const args = getProperty(event, "args");
|
|
return { type: "tool.start", toolName: getString(event, "toolName") ?? "", toolCallId: getString(event, "toolCallId") ?? "", summary: summarizeToolArgs(args), args };
|
|
}
|
|
if (eventType === "tool_execution_update") {
|
|
const partialResult = getProperty(event, "partialResult");
|
|
return { type: "tool.update", toolName: getString(event, "toolName") ?? "", toolCallId: getString(event, "toolCallId") ?? "", text: stringifyToolResult(partialResult), content: toolResultContent(partialResult), details: toolResultDetails(partialResult) };
|
|
}
|
|
if (eventType === "tool_execution_end") {
|
|
const result = getProperty(event, "result");
|
|
return { type: "tool.end", toolName: getString(event, "toolName") ?? "", toolCallId: getString(event, "toolCallId") ?? "", text: stringifyToolResult(result), content: toolResultContent(result), details: toolResultDetails(result), isError: getBoolean(event, "isError") === true };
|
|
}
|
|
if (eventType === "agent_start") return { type: "agent.start" };
|
|
if (eventType === "agent_end") return { type: "agent.end" };
|
|
if (eventType === "message_end") {
|
|
const message = getProperty(event, "message");
|
|
return message === undefined ? { type: "message.end" } : { type: "message.end", message };
|
|
}
|
|
return { type: "pi.event", eventType: eventType ?? "unknown" };
|
|
}
|
|
|
|
function summarizeToolArgs(args: unknown): string {
|
|
if (!isRecord(args)) return stringifyPrimitive(args);
|
|
const command = getString(args, "command");
|
|
if (command !== undefined) return command;
|
|
const path = getString(args, "path");
|
|
if (path !== undefined) return path;
|
|
if (typeof args["oldText"] === "string" && typeof args["newText"] === "string") return "edit text replacement";
|
|
const edits = args["edits"];
|
|
if (Array.isArray(edits)) return `${String(edits.length)} edit${edits.length === 1 ? "" : "s"}`;
|
|
const entries = Object.entries(args).filter(([, value]) => value != null).slice(0, 3);
|
|
return entries.map(([key, value]) => `${key}: ${shortToolValue(value)}`).join(" · ");
|
|
}
|
|
|
|
function shortToolValue(value: unknown): string {
|
|
if (typeof value === "string") return value.length > 80 ? `${value.slice(0, 77)}…` : value;
|
|
if (typeof value === "number" || typeof value === "boolean") return String(value);
|
|
if (Array.isArray(value)) return `${String(value.length)} item${value.length === 1 ? "" : "s"}`;
|
|
if (typeof value === "object" && value !== null) return "object";
|
|
return "";
|
|
}
|
|
|
|
function toolResultContent(result: unknown): unknown {
|
|
if (isRecord(result)) {
|
|
const content = getProperty(result, "content");
|
|
if (content !== undefined) return content;
|
|
const text = getString(result, "text") ?? getString(result, "output");
|
|
if (text !== undefined) return [{ type: "text", text }];
|
|
}
|
|
if (typeof result === "string") return [{ type: "text", text: result }];
|
|
return result;
|
|
}
|
|
|
|
function toolResultDetails(result: unknown): unknown {
|
|
return isRecord(result) ? getProperty(result, "details") : undefined;
|
|
}
|
|
|
|
function stringifyToolResult(result: unknown): string {
|
|
if (typeof result === "string") return result;
|
|
if (Array.isArray(result)) return result.map(stringifyToolResult).filter((text) => text !== "").join("\n");
|
|
if (isRecord(result)) {
|
|
if (getString(result, "type") === "image") return "[image]";
|
|
const text = getString(result, "text") ?? getString(result, "content") ?? getString(result, "output");
|
|
if (text !== undefined) return text;
|
|
const content = getProperty(result, "content");
|
|
if (Array.isArray(content)) return stringifyToolResult(content);
|
|
return JSON.stringify(result, null, 2);
|
|
}
|
|
return stringifyPrimitive(result);
|
|
}
|
|
|
|
function isRecord(value: unknown): value is Record<string, unknown> {
|
|
return typeof value === "object" && value !== null;
|
|
}
|
|
|
|
function getProperty(value: unknown, key: string): unknown {
|
|
return isRecord(value) ? value[key] : undefined;
|
|
}
|
|
|
|
function getString(value: unknown, key: string): string | undefined {
|
|
const property = getProperty(value, key);
|
|
return typeof property === "string" ? property : undefined;
|
|
}
|
|
|
|
function getBoolean(value: unknown, key: string): boolean | undefined {
|
|
const property = getProperty(value, key);
|
|
return typeof property === "boolean" ? property : undefined;
|
|
}
|
|
|
|
function stringifyPrimitive(value: unknown): string {
|
|
if (value == null) return "";
|
|
if (typeof value === "string") return value;
|
|
if (typeof value === "number" || typeof value === "boolean" || typeof value === "bigint") return String(value);
|
|
return "";
|
|
}
|