import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import { MarkdownExporter } from '../../../src/plugins/exporters/MarkdownExporter';
import { IAnomaly, IAction } from '../../../src/core/interfaces';

function makeAnomaly(overrides: Partial<IAnomaly> = {}): IAnomaly {
  const action: IAction = {
    id: 'act-1',
    type: 'navigate',
    url: 'http://localhost:3000/register',
    timestamp: 1700000000000,
    seed: 42,
    stateId: 's1',
  };
  return {
    id: 'anom-md-001',
    type: 'http_error',
    severity: 'high',
    observationId: 'obs-1',
    actionTrace: [action],
    description: 'Form submission returns HTTP 500 on empty email field',
    evidence: {
      screenshotPath: 'anom-md-001/screenshot.png',
      domSnapshotPath: 'anom-md-001/dom.html',
      httpLog: [{ url: '/api/register', status: 500, method: 'POST', durationMs: 234 }],
      rawErrors: ['POST /api/register → 500 (234ms)'],
    },
    timestamp: 1700000000000,
    ...overrides,
  };
}

describe('MarkdownExporter', () => {
  let tmpDir: string;

  beforeEach(() => {
    tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'abe-md-'));
  });

  afterEach(() => {
    fs.rmSync(tmpDir, { recursive: true, force: true });
  });

  it('creates report.md in the output directory', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'anom-md-001');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    expect(fs.existsSync(filePath)).toBe(true);
    expect(filePath.endsWith('report.md')).toBe(true);
  });

  it('includes anomaly type and date in title', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'title-test');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('# Bug Report');
    expect(content).toContain('http_error');
  });

  it('includes severity section', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'severity-test');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('## Severity');
    expect(content).toContain('high');
  });

  it('includes reproduction steps with navigate action', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'steps-test');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('## Reproduction Steps');
    expect(content).toContain('Navigate to');
    expect(content).toContain('http://localhost:3000/register');
  });

  it('includes seed and replay command', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'seed-test');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('Seed used');
    expect(content).toContain('42');
    expect(content).toContain('Replay command');
    expect(content).toContain('npm run replay');
  });

  it('includes evidence section with screenshot and dom paths', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'evidence-test');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('## Evidence');
    expect(content).toContain('screenshot.png');
    expect(content).toContain('dom.html');
  });

  it('includes HTTP table when responses present', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'http-test');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('500');
    expect(content).toContain('/api/register');
    expect(content).toContain('POST');
  });

  it('includes raw errors section', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'errors-test');
    const filePath = await exporter.export(makeAnomaly(), outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('## Raw Errors');
    expect(content).toContain('POST /api/register');
  });

  it('has format = markdown', () => {
    expect(new MarkdownExporter().format).toBe('markdown');
  });

  it('handles anomaly with no action trace', async () => {
    const exporter = new MarkdownExporter();
    const outputDir = path.join(tmpDir, 'no-trace-test');
    const anomaly = makeAnomaly({ actionTrace: [] });
    const filePath = await exporter.export(anomaly, outputDir);
    const content = fs.readFileSync(filePath, 'utf8');
    expect(content).toContain('No steps recorded');
  });
});