/**
 * Unit tests for getHeadquartersDashboard tRPC procedure.
 *
 * Uses in-memory Drizzle DB + inline MockAgentManager for isolation.
 */

import { describe, it, expect, vi } from 'vitest';
import { router, publicProcedure, createCallerFactory } from '../../trpc/trpc.js';
import { headquartersProcedures } from '../../trpc/routers/headquarters.js';
import type { TRPCContext } from '../../trpc/context.js';
import type { AgentManager, AgentInfo, PendingQuestions } from '../../agent/types.js';
import { createTestDatabase } from '../../db/repositories/drizzle/test-helpers.js';
import {
  DrizzleInitiativeRepository,
  DrizzlePhaseRepository,
  DrizzleTaskRepository,
} from '../../db/repositories/drizzle/index.js';

// =============================================================================
// MockAgentManager
// =============================================================================

class MockAgentManager implements AgentManager {
  private agents: AgentInfo[] = [];
  private questions: Map<string, PendingQuestions> = new Map();

  addAgent(info: Partial<AgentInfo> & Pick<AgentInfo, 'id' | 'name' | 'status'>): void {
    this.agents.push({
      taskId: null,
      initiativeId: null,
      sessionId: null,
      worktreeId: info.id,
      mode: 'execute',
      provider: 'claude',
      accountId: null,
      createdAt: new Date('2025-01-01T00:00:00Z'),
      updatedAt: new Date('2025-01-01T00:00:00Z'),
      userDismissedAt: null,
      exitCode: null,
      prompt: null,
      ...info,
    });
  }

  setQuestions(agentId: string, questions: PendingQuestions): void {
    this.questions.set(agentId, questions);
  }

  async list(): Promise<AgentInfo[]> {
    return [...this.agents];
  }

  async getPendingQuestions(agentId: string): Promise<PendingQuestions | null> {
    return this.questions.get(agentId) ?? null;
  }

  async spawn(): Promise<AgentInfo> { throw new Error('Not implemented'); }
  async stop(): Promise<void> { throw new Error('Not implemented'); }
  async get(): Promise<AgentInfo | null> { return null; }
  async getByName(): Promise<AgentInfo | null> { return null; }
  async resume(): Promise<void> { throw new Error('Not implemented'); }
  async getResult() { return null; }
  async delete(): Promise<void> { throw new Error('Not implemented'); }
  async dismiss(): Promise<void> { throw new Error('Not implemented'); }
  async resumeForConversation(): Promise<boolean> { return false; }
  async sendUserMessage(): Promise<void> { throw new Error('Not implemented'); }
}

// =============================================================================
// Test router
// =============================================================================

const testRouter = router({
  ...headquartersProcedures(publicProcedure),
});

const createCaller = createCallerFactory(testRouter);

// =============================================================================
// Helpers
// =============================================================================

function makeCtx(agentManager: MockAgentManager, overrides?: Partial<TRPCContext>): TRPCContext {
  const db = createTestDatabase();
  return {
    eventBus: {} as TRPCContext['eventBus'],
    serverStartedAt: null,
    processCount: 0,
    agentManager,
    initiativeRepository: new DrizzleInitiativeRepository(db),
    phaseRepository: new DrizzlePhaseRepository(db),
    taskRepository: new DrizzleTaskRepository(db),
    ...overrides,
  };
}

// =============================================================================
// Tests
// =============================================================================

describe('getHeadquartersDashboard', () => {
  it('empty state — no initiatives, no agents → all arrays empty', async () => {
    const agents = new MockAgentManager();
    const caller = createCaller(makeCtx(agents));

    const result = await caller.getHeadquartersDashboard();

    expect(result.waitingForInput).toEqual([]);
    expect(result.pendingReviewInitiatives).toEqual([]);
    expect(result.pendingReviewPhases).toEqual([]);
    expect(result.planningInitiatives).toEqual([]);
    expect(result.resolvingConflicts).toEqual([]);
    expect(result.blockedPhases).toEqual([]);
  });

  it('waitingForInput — agent with waiting_for_input status appears', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'My Initiative', status: 'active' });

    agents.addAgent({
      id: 'agent-1',
      name: 'jolly-agent',
      status: 'waiting_for_input',
      initiativeId: initiative.id,
      userDismissedAt: null,
      updatedAt: new Date('2025-06-01T12:00:00Z'),
    });
    agents.setQuestions('agent-1', {
      questions: [{ id: 'q1', question: 'Which approach?' }],
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.waitingForInput).toHaveLength(1);
    const item = result.waitingForInput[0];
    expect(item.agentId).toBe('agent-1');
    expect(item.agentName).toBe('jolly-agent');
    expect(item.initiativeId).toBe(initiative.id);
    expect(item.initiativeName).toBe('My Initiative');
    expect(item.questionText).toBe('Which approach?');
  });

  it('waitingForInput — dismissed agent is excluded', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'My Initiative', status: 'active' });

    agents.addAgent({
      id: 'agent-1',
      name: 'dismissed-agent',
      status: 'waiting_for_input',
      initiativeId: initiative.id,
      userDismissedAt: new Date(),
    });
    agents.setQuestions('agent-1', {
      questions: [{ id: 'q1', question: 'Which approach?' }],
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.waitingForInput).toEqual([]);
  });

  it('pendingReviewInitiatives — initiative with pending_review status appears', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'Review Me', status: 'pending_review' });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.pendingReviewInitiatives).toHaveLength(1);
    expect(result.pendingReviewInitiatives[0].initiativeId).toBe(initiative.id);
    expect(result.pendingReviewInitiatives[0].initiativeName).toBe('Review Me');
  });

  it('pendingReviewPhases — phase with pending_review status appears', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const phaseRepo = ctx.phaseRepository!;
    const initiative = await initiativeRepo.create({ name: 'My Initiative', status: 'active' });
    const phase = await phaseRepo.create({
      initiativeId: initiative.id,
      name: 'Phase 1',
      status: 'pending_review',
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.pendingReviewPhases).toHaveLength(1);
    const item = result.pendingReviewPhases[0];
    expect(item.initiativeId).toBe(initiative.id);
    expect(item.initiativeName).toBe('My Initiative');
    expect(item.phaseId).toBe(phase.id);
    expect(item.phaseName).toBe('Phase 1');
  });

  it('planningInitiatives — all phases pending and no running agents', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const phaseRepo = ctx.phaseRepository!;
    const initiative = await initiativeRepo.create({ name: 'Planning Init', status: 'active' });
    const phase1 = await phaseRepo.create({
      initiativeId: initiative.id,
      name: 'Phase 1',
      status: 'pending',
    });
    await phaseRepo.create({
      initiativeId: initiative.id,
      name: 'Phase 2',
      status: 'pending',
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.planningInitiatives).toHaveLength(1);
    const item = result.planningInitiatives[0];
    expect(item.initiativeId).toBe(initiative.id);
    expect(item.initiativeName).toBe('Planning Init');
    expect(item.pendingPhaseCount).toBe(2);
    // since = oldest phase createdAt
    expect(item.since).toBe(phase1.createdAt.toISOString());
  });

  it('planningInitiatives — excluded when a running agent exists for the initiative', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const phaseRepo = ctx.phaseRepository!;
    const initiative = await initiativeRepo.create({ name: 'Planning Init', status: 'active' });
    await phaseRepo.create({ initiativeId: initiative.id, name: 'Phase 1', status: 'pending' });

    agents.addAgent({
      id: 'agent-running',
      name: 'busy-agent',
      status: 'running',
      initiativeId: initiative.id,
      userDismissedAt: null,
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.planningInitiatives).toEqual([]);
  });

  it('planningInitiatives — excluded when a phase is not pending', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const phaseRepo = ctx.phaseRepository!;
    const initiative = await initiativeRepo.create({ name: 'Mixed Init', status: 'active' });
    await phaseRepo.create({ initiativeId: initiative.id, name: 'Phase 1', status: 'pending' });
    await phaseRepo.create({ initiativeId: initiative.id, name: 'Phase 2', status: 'in_progress' });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.planningInitiatives).toEqual([]);
  });

  it('blockedPhases — phase with blocked status appears', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const phaseRepo = ctx.phaseRepository!;
    const initiative = await initiativeRepo.create({ name: 'Blocked Init', status: 'active' });
    const phase = await phaseRepo.create({
      initiativeId: initiative.id,
      name: 'Stuck Phase',
      status: 'blocked',
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.blockedPhases).toHaveLength(1);
    const item = result.blockedPhases[0];
    expect(item.initiativeId).toBe(initiative.id);
    expect(item.initiativeName).toBe('Blocked Init');
    expect(item.phaseId).toBe(phase.id);
    expect(item.phaseName).toBe('Stuck Phase');
    expect(item.lastMessage).toBeNull();
  });

  it('resolvingConflicts — running conflict agent appears', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'Conflicting Init', status: 'active' });

    agents.addAgent({
      id: 'agent-conflict',
      name: 'conflict-1234567890',
      status: 'running',
      initiativeId: initiative.id,
      userDismissedAt: null,
      updatedAt: new Date('2025-06-01T12:00:00Z'),
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.resolvingConflicts).toHaveLength(1);
    const item = result.resolvingConflicts[0];
    expect(item.initiativeId).toBe(initiative.id);
    expect(item.initiativeName).toBe('Conflicting Init');
    expect(item.agentId).toBe('agent-conflict');
    expect(item.agentName).toBe('conflict-1234567890');
    expect(item.agentStatus).toBe('running');
  });

  it('resolvingConflicts — waiting_for_input conflict agent appears', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'Conflicting Init', status: 'active' });

    agents.addAgent({
      id: 'agent-conflict',
      name: 'conflict-1234567890',
      status: 'waiting_for_input',
      initiativeId: initiative.id,
      userDismissedAt: null,
      updatedAt: new Date('2025-06-01T12:00:00Z'),
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.resolvingConflicts).toHaveLength(1);
    expect(result.resolvingConflicts[0].agentStatus).toBe('waiting_for_input');
  });

  it('resolvingConflicts — dismissed conflict agent is excluded', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'Conflicting Init', status: 'active' });

    agents.addAgent({
      id: 'agent-conflict',
      name: 'conflict-1234567890',
      status: 'running',
      initiativeId: initiative.id,
      userDismissedAt: new Date(),
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.resolvingConflicts).toEqual([]);
  });

  it('resolvingConflicts — idle conflict agent is excluded', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'Conflicting Init', status: 'active' });

    agents.addAgent({
      id: 'agent-conflict',
      name: 'conflict-1234567890',
      status: 'idle',
      initiativeId: initiative.id,
      userDismissedAt: null,
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.resolvingConflicts).toEqual([]);
  });

  it('resolvingConflicts — non-conflict agent is excluded', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);
    const initiativeRepo = ctx.initiativeRepository!;
    const initiative = await initiativeRepo.create({ name: 'Some Init', status: 'active' });

    agents.addAgent({
      id: 'agent-regular',
      name: 'regular-agent',
      status: 'running',
      initiativeId: initiative.id,
      userDismissedAt: null,
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.resolvingConflicts).toEqual([]);
  });

  it('ordering — waitingForInput sorted oldest first', async () => {
    const agents = new MockAgentManager();
    const ctx = makeCtx(agents);

    agents.addAgent({
      id: 'agent-newer',
      name: 'newer-agent',
      status: 'waiting_for_input',
      userDismissedAt: null,
      updatedAt: new Date('2025-06-02T00:00:00Z'),
    });
    agents.addAgent({
      id: 'agent-older',
      name: 'older-agent',
      status: 'waiting_for_input',
      userDismissedAt: null,
      updatedAt: new Date('2025-06-01T00:00:00Z'),
    });

    const caller = createCaller(ctx);
    const result = await caller.getHeadquartersDashboard();

    expect(result.waitingForInput).toHaveLength(2);
    expect(result.waitingForInput[0].agentId).toBe('agent-older');
    expect(result.waitingForInput[1].agentId).toBe('agent-newer');
  });
});