import { describe, expect, test } from 'bun:test';

import type { PatternDefinition } from '@shared/domain/pattern';
import {
  appendRunActivityEvent,
  completeSessionRunRecord,
  createSessionRunRecord,
  normalizeSessionRunRecords,
  upsertRunApprovalEvent,
  upsertRunMessageEvent,
} from '@shared/domain/runTimeline';
import type { ProjectRecord } from '@shared/domain/project';
import type { PendingApprovalRecord } from '@shared/domain/approval';

function createPattern(): PatternDefinition {
  return {
    id: 'pattern-sequential',
    name: 'Sequential Trio Review',
    description: 'Sequential handoff review flow.',
    mode: 'sequential',
    availability: 'available',
    maxIterations: 1,
    agents: [
      {
        id: 'agent-writer',
        name: 'Writer',
        description: 'Writes the draft.',
        instructions: 'Write.',
        model: 'gpt-5.4',
      },
      {
        id: 'agent-reviewer',
        name: 'Reviewer',
        description: 'Reviews the draft.',
        instructions: 'Review.',
        model: 'claude-sonnet-4.5',
      },
    ],
    createdAt: '2026-03-23T00:00:00.000Z',
    updatedAt: '2026-03-23T00:00:00.000Z',
  };
}

function createProject(): ProjectRecord {
  return {
    id: 'project-1',
    name: 'alpha',
    path: 'C:\\workspace\\alpha',
    addedAt: '2026-03-23T00:00:00.000Z',
  };
}

describe('run timeline helpers', () => {
  test('creates a persistent run record with agent lanes and a trigger event', () => {
    const run = createSessionRunRecord({
      requestId: 'turn-1',
      project: createProject(),
      workspaceKind: 'project',
      pattern: createPattern(),
      triggerMessageId: 'msg-user-1',
      startedAt: '2026-03-23T00:00:01.000Z',
    });

    expect(run).toMatchObject({
      requestId: 'turn-1',
      projectId: 'project-1',
      projectPath: 'C:\\workspace\\alpha',
      patternId: 'pattern-sequential',
      patternName: 'Sequential Trio Review',
      patternMode: 'sequential',
      triggerMessageId: 'msg-user-1',
      status: 'running',
    });
    expect(run.agents).toEqual([
      {
        agentId: 'agent-writer',
        agentName: 'Writer',
        model: 'gpt-5.4',
        reasoningEffort: undefined,
      },
      {
        agentId: 'agent-reviewer',
        agentName: 'Reviewer',
        model: 'claude-sonnet-4.5',
        reasoningEffort: undefined,
      },
    ]);
    expect(run.events[0]).toMatchObject({
      kind: 'run-started',
      status: 'completed',
      messageId: 'msg-user-1',
    });
  });

  test('records grouped message steps and settles the run on completion', () => {
    const baseRun = createSessionRunRecord({
      requestId: 'turn-1',
      project: createProject(),
      workspaceKind: 'project',
      pattern: createPattern(),
      triggerMessageId: 'msg-user-1',
      startedAt: '2026-03-23T00:00:01.000Z',
    });

    const streamingRun = upsertRunMessageEvent(baseRun, {
      messageId: 'msg-assistant-1',
      authorName: 'Writer',
      content: 'Draft',
      occurredAt: '2026-03-23T00:00:02.000Z',
      status: 'running',
    });

    const completedRun = completeSessionRunRecord(
      upsertRunMessageEvent(streamingRun, {
        messageId: 'msg-assistant-1',
        authorName: 'Writer',
        content: 'Draft polished into the final answer.',
        occurredAt: '2026-03-23T00:00:03.000Z',
        status: 'completed',
      }),
      '2026-03-23T00:00:04.000Z',
    );

    const messageEvent = completedRun.events.find((event) => event.kind === 'message');
    expect(messageEvent).toMatchObject({
      messageId: 'msg-assistant-1',
      agentId: 'agent-writer',
      agentName: 'Writer',
      content: 'Draft polished into the final answer.',
      status: 'completed',
      updatedAt: '2026-03-23T00:00:03.000Z',
    });
    expect(completedRun.status).toBe('completed');
    expect(completedRun.completedAt).toBe('2026-03-23T00:00:04.000Z');
    expect(completedRun.events.at(-1)).toMatchObject({
      kind: 'run-completed',
      status: 'completed',
    });
  });

  test('captures handoffs with explicit source and target agents', () => {
    const run = appendRunActivityEvent(
      createSessionRunRecord({
        requestId: 'turn-1',
        project: createProject(),
        workspaceKind: 'project',
        pattern: createPattern(),
        triggerMessageId: 'msg-user-1',
        startedAt: '2026-03-23T00:00:01.000Z',
      }),
      {
        activityType: 'handoff',
        occurredAt: '2026-03-23T00:00:02.000Z',
        sourceAgentId: 'agent-writer',
        agentId: 'agent-reviewer',
      },
    );

    expect(run.events.at(-1)).toMatchObject({
      kind: 'handoff',
      agentId: 'agent-writer',
      agentName: 'Writer',
      sourceAgentId: 'agent-writer',
      sourceAgentName: 'Writer',
      targetAgentId: 'agent-reviewer',
      targetAgentName: 'Reviewer',
    });
  });

  test('normalizes missing run collections to an empty array', () => {
    expect(normalizeSessionRunRecords(undefined)).toEqual([]);
  });

  test('tracks approval checkpoints as a single timeline event that can be resolved later', () => {
    const baseRun = createSessionRunRecord({
      requestId: 'turn-1',
      project: createProject(),
      workspaceKind: 'project',
      pattern: createPattern(),
      triggerMessageId: 'msg-user-1',
      startedAt: '2026-03-23T00:00:01.000Z',
    });

    const pendingApproval: PendingApprovalRecord = {
      id: 'approval-1',
      kind: 'tool-call',
      status: 'pending',
      requestedAt: '2026-03-23T00:00:02.000Z',
      agentId: 'agent-writer',
      agentName: 'Writer',
      title: 'Approve tool access',
      permissionKind: 'tool access',
    };

    const pendingRun = upsertRunApprovalEvent(baseRun, pendingApproval);
    const resolvedRun = upsertRunApprovalEvent(pendingRun, {
      ...pendingApproval,
      status: 'approved',
      resolvedAt: '2026-03-23T00:00:03.000Z',
    });

    const approvalEvent = resolvedRun.events.find((event) => event.kind === 'approval');
    expect(approvalEvent).toMatchObject({
      approvalId: 'approval-1',
      approvalKind: 'tool-call',
      approvalTitle: 'Approve tool access',
      permissionKind: 'tool access',
      status: 'completed',
      decision: 'approved',
      updatedAt: '2026-03-23T00:00:03.000Z',
    });
  });
});