# All files / src/agent mock-manager.ts

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     /**
     * Mock Agent Manager Adapter
     *
     * Implementation of AgentManager port for test scenarios.
     * Simulates configurable agent behaviors (success, crash, waiting_for_input)
     * without spawning real Claude agents.
     */

    import { randomUUID } from 'crypto';
    import type {
      AgentManager,
      AgentInfo,
      AgentMode,
      SpawnAgentOptions,
      AgentResult,
      AgentStatus,
      PendingQuestions,
      QuestionItem,
    } from './types.js';
    import type {
      EventBus,
      AgentSpawnedEvent,
      AgentStoppedEvent,
      AgentCrashedEvent,
      AgentResumedEvent,
      AgentDeletedEvent,
      AgentWaitingEvent,
    } from '../events/index.js';

    /**
     * Scenario configuration for mock agent behavior.
     * Matches the simplified agent signal schema: done, questions, or error.
     * Mode-specific stopped reasons are derived from the agent's mode.
     */
    export type MockAgentScenario =
      | {
          status: 'done';
          result?: string;
          filesModified?: string[];
          delay?: number;
        }
      | {
          status: 'questions';
          questions: QuestionItem[];
          delay?: number;
        }
      | {
          status: 'error';
          error: string;
          delay?: number;
        };

    /**
     * Internal agent record with scenario and timer tracking.
     */
    interface MockAgentRecord {
      info: AgentInfo;
      scenario: MockAgentScenario;
      result?: AgentResult;
      pendingQuestions?: PendingQuestions;
      completionTimer?: ReturnType<typeof setTimeout>;
    }

    /**
     * Default scenario: immediate success with generic message.
     */
    const DEFAULT_SCENARIO: MockAgentScenario = {
      status: 'done',
      result: 'Task completed successfully',
      filesModified: [],
      delay: 0,
    };

    /**
     * MockAgentManager - Adapter implementing AgentManager port for testing.
     *
     * Enables E2E testing of dispatch/coordination flows without spawning
     * real Claude agents. Simulates configurable agent behaviors and
     * emits proper lifecycle events.
     */
    export class MockAgentManager implements AgentManager {
      private agents: Map<string, MockAgentRecord> = new Map();
      private scenarioOverrides: Map<string, MockAgentScenario> = new Map();
      private defaultScenario: MockAgentScenario;
      private eventBus?: EventBus;

      constructor(options?: { eventBus?: EventBus; defaultScenario?: MockAgentScenario }) {
        this.eventBus = options?.eventBus;
        this.defaultScenario = options?.defaultScenario ?? DEFAULT_SCENARIO;
      }

      /**
       * Set scenario override for a specific agent name.
       * When spawn() is called with this name, the override takes precedence.
       */
      setScenario(agentName: string, scenario: MockAgentScenario): void {
        this.scenarioOverrides.set(agentName, scenario);
      }

      /**
       * Clear scenario override for a specific agent name.
       */
      clearScenario(agentName: string): void {
        this.scenarioOverrides.delete(agentName);
      }

      /**
       * Spawn a new mock agent.
       *
       * Creates agent record in internal Map, schedules completion based on scenario.
       * Completion happens async via setTimeout (even if delay=0).
       */
      async spawn(options: SpawnAgentOptions): Promise<AgentInfo> {
        const { taskId, prompt } = options;
        const name = options.name ?? `agent-${taskId?.slice(0, 6) ?? 'noTask'}`;

        // Check name uniqueness
        for (const record of this.agents.values()) {
          if (record.info.name === name) {
            throw new Error(`Agent with name '${name}' already exists`);
          }
        }

        const agentId = randomUUID();
        const sessionId = randomUUID();
        const worktreeId = randomUUID();
        const now = new Date();

        // Determine scenario (override takes precedence — use original name or generated)
        const scenario = this.scenarioOverrides.get(name) ?? this.defaultScenario;

        const info: AgentInfo = {
          id: agentId,
          name: name ?? `mock-${agentId.slice(0, 6)}`,
          taskId: taskId ?? null,
          initiativeId: options.initiativeId ?? null,
          sessionId,
          worktreeId,
          status: 'running',
          mode: options.mode ?? 'execute',
          provider: options.provider ?? 'claude',
          accountId: null,
          createdAt: now,
          updatedAt: now,
        };

        const record: MockAgentRecord = {
          info,
          scenario,
        };

        this.agents.set(agentId, record);

        // Emit spawned event
        if (this.eventBus) {
          const event: AgentSpawnedEvent = {
            type: 'agent:spawned',
            timestamp: new Date(),
            payload: {
              agentId,
              name,
              taskId: taskId ?? null,
              worktreeId,
              provider: options.provider ?? 'claude',
            },
          };
          this.eventBus.emit(event);
        }

        // Schedule completion async (even with delay=0, uses setTimeout for async behavior)
        this.scheduleCompletion(agentId, scenario);

        return info;
      }

      /**
       * Schedule agent completion based on scenario.
       */
      private scheduleCompletion(agentId: string, scenario: MockAgentScenario): void {
        const delay = scenario.delay ?? 0;

        const timer = setTimeout(() => {
          this.completeAgent(agentId, scenario);
        }, delay);

        const record = this.agents.get(agentId);
        Eif (record) {
          record.completionTimer = timer;
        }
      }

      /**
       * Map agent mode to stopped event reason.
       */
      private getStoppedReason(mode: AgentMode): AgentStoppedEvent['payload']['reason'] {
        switch (mode) {
          case 'discuss': return 'context_complete';
          case 'plan': return 'plan_complete';
          case 'detail': return 'detail_complete';
          case 'refine': return 'refine_complete';
          default: return 'task_complete';
        }
      }

      /**
       * Complete agent based on scenario status.
       */
      private completeAgent(agentId: string, scenario: MockAgentScenario): void {
        const record = this.agents.get(agentId);
        Iif (!record) return;

        const { info } = record;

        switch (scenario.status) {
          case 'done':
            record.result = {
              success: true,
              message: scenario.result ?? 'Task completed successfully',
              filesModified: scenario.filesModified,
            };
            record.info.status = 'idle';
            record.info.updatedAt = new Date();

            Eif (this.eventBus) {
              const reason = this.getStoppedReason(info.mode);
              const event: AgentStoppedEvent = {
                type: 'agent:stopped',
                timestamp: new Date(),
                payload: {
                  agentId,
                  name: info.name,
                  taskId: info.taskId,
                  reason,
                },
              };
              this.eventBus.emit(event);
            }
            break;

          case 'error':
            record.result = {
              success: false,
              message: scenario.error,
            };
            record.info.status = 'crashed';
            record.info.updatedAt = new Date();

            Eif (this.eventBus) {
              const event: AgentCrashedEvent = {
                type: 'agent:crashed',
                timestamp: new Date(),
                payload: {
                  agentId,
                  name: info.name,
                  taskId: info.taskId,
                  error: scenario.error,
                },
              };
              this.eventBus.emit(event);
            }
            break;

          case 'questions':
            record.info.status = 'waiting_for_input';
            record.info.updatedAt = new Date();
            record.pendingQuestions = {
              questions: scenario.questions,
            };

            Eif (this.eventBus) {
              const event: AgentWaitingEvent = {
                type: 'agent:waiting',
                timestamp: new Date(),
                payload: {
                  agentId,
                  name: info.name,
                  taskId: info.taskId,
                  sessionId: info.sessionId ?? '',
                  questions: scenario.questions,
                },
              };
              this.eventBus.emit(event);
            }
            break;
        }
      }

      /**
       * Stop a running agent.
       *
       * Cancels scheduled completion, marks agent stopped, emits agent:stopped event.
       */
      async stop(agentId: string): Promise<void> {
        const record = this.agents.get(agentId);
        if (!record) {
          throw new Error(`Agent '${agentId}' not found`);
        }

        // Cancel any pending completion
        Eif (record.completionTimer) {
          clearTimeout(record.completionTimer);
          record.completionTimer = undefined;
        }

        record.info.status = 'stopped';
        record.info.updatedAt = new Date();

        Eif (this.eventBus) {
          const event: AgentStoppedEvent = {
            type: 'agent:stopped',
            timestamp: new Date(),
            payload: {
              agentId,
              name: record.info.name,
              taskId: record.info.taskId,
              reason: 'user_requested',
            },
          };
          this.eventBus.emit(event);
        }
      }

      /**
       * Delete an agent and clean up.
       * Removes from internal map and emits agent:deleted event.
       */
      async delete(agentId: string): Promise<void> {
        const record = this.agents.get(agentId);
        if (!record) {
          throw new Error(`Agent '${agentId}' not found`);
        }

        // Cancel any pending completion
        if (record.completionTimer) {
          clearTimeout(record.completionTimer);
          record.completionTimer = undefined;
        }

        const name = record.info.name;
        this.agents.delete(agentId);

        if (this.eventBus) {
          const event: AgentDeletedEvent = {
            type: 'agent:deleted',
            timestamp: new Date(),
            payload: {
              agentId,
              name,
            },
          };
          this.eventBus.emit(event);
        }
      }

      /**
       * List all agents with their current status.
       */
      async list(): Promise<AgentInfo[]> {
        return Array.from(this.agents.values()).map((record) => record.info);
      }

      /**
       * Get a specific agent by ID.
       */
      async get(agentId: string): Promise<AgentInfo | null> {
        const record = this.agents.get(agentId);
        return record ? record.info : null;
      }

      /**
       * Get a specific agent by name.
       */
      async getByName(name: string): Promise<AgentInfo | null> {
        for (const record of this.agents.values()) {
          Eif (record.info.name === name) {
            return record.info;
          }
        }
        return null;
      }

      /**
       * Resume an agent that's waiting for input.
       *
       * Re-runs the scenario for the resumed agent. Emits agent:resumed event.
       * Agent must be in 'waiting_for_input' status.
       *
       * @param agentId - Agent to resume
       * @param answers - Map of question ID to user's answer
       */
      async resume(agentId: string, answers: Record<string, string>): Promise<void> {
        const record = this.agents.get(agentId);
        if (!record) {
          throw new Error(`Agent '${agentId}' not found`);
        }

        if (record.info.status !== 'waiting_for_input') {
          throw new Error(
            `Agent '${record.info.name}' is not waiting for input (status: ${record.info.status})`
          );
        }

        Iif (!record.info.sessionId) {
          throw new Error(`Agent '${record.info.name}' has no session to resume`);
        }

        // Update status to running, clear pending questions
        record.info.status = 'running';
        record.info.updatedAt = new Date();
        record.pendingQuestions = undefined;

        // Emit resumed event
        Eif (this.eventBus) {
          const event: AgentResumedEvent = {
            type: 'agent:resumed',
            timestamp: new Date(),
            payload: {
              agentId,
              name: record.info.name,
              taskId: record.info.taskId,
              sessionId: record.info.sessionId,
            },
          };
          this.eventBus.emit(event);
        }

        // Re-run scenario (after resume, typically completes successfully)
        // For testing, we use a new scenario that defaults to success
        // Extract filesModified from original scenario if it was a 'done' type
        const originalFilesModified =
          record.scenario.status === 'done' ? record.scenario.filesModified : undefined;
        const resumeScenario: MockAgentScenario = {
          status: 'done',
          delay: record.scenario.delay ?? 0,
          result: 'Resumed and completed successfully',
          filesModified: originalFilesModified,
        };

        this.scheduleCompletion(agentId, resumeScenario);
      }

      /**
       * Get the result of an agent's work.
       *
       * Only available after agent completes or crashes.
       */
      async getResult(agentId: string): Promise<AgentResult | null> {
        const record = this.agents.get(agentId);
        return record?.result ?? null;
      }

      /**
       * Get pending questions for an agent waiting for input.
       */
      async getPendingQuestions(agentId: string): Promise<PendingQuestions | null> {
        const record = this.agents.get(agentId);
        return record?.pendingQuestions ?? null;
      }

      /**
       * Dismiss an agent.
       * Mock implementation just marks the agent as dismissed.
       */
      async dismiss(agentId: string): Promise<void> {
        const record = this.agents.get(agentId);
        Iif (!record) {
          throw new Error(`Agent '${agentId}' not found`);
        }
        const now = new Date();
        record.info.userDismissedAt = now;
        record.info.updatedAt = now;
      }

      /**
       * Clear all agents and pending timers.
       * Useful for test cleanup.
       */
      clear(): void {
        for (const record of this.agents.values()) {
          if (record.completionTimer) {
            clearTimeout(record.completionTimer);
          }
        }
        this.agents.clear();
        this.scenarioOverrides.clear();
      }
    }