import { describe, it, beforeEach } from 'node:test';
import assert from 'node:assert/strict';
import { resolve } from 'node:path';
import { fileURLToPath } from 'node:url';
import { resetCounter } from '../../scanners/lib/output.mjs';
import { discoverConfigFiles } from '../../scanners/lib/file-discovery.mjs';
import { scan } from '../../scanners/hook-validator.mjs';

const __dirname = fileURLToPath(new URL('.', import.meta.url));
const FIXTURES = resolve(__dirname, '../fixtures');

describe('HKV scanner — healthy project', () => {
  let result;
  beforeEach(async () => {
    resetCounter();
    const discovery = await discoverConfigFiles(resolve(FIXTURES, 'healthy-project'));
    result = await scan(resolve(FIXTURES, 'healthy-project'), discovery);
  });

  it('returns status ok', () => {
    assert.strictEqual(result.status, 'ok');
  });

  it('has scanner prefix HKV', () => {
    assert.strictEqual(result.scanner, 'HKV');
  });

  it('finds no critical or high issues', () => {
    const serious = result.findings.filter(f => f.severity === 'critical' || f.severity === 'high');
    assert.strictEqual(serious.length, 0, `Found: ${serious.map(f => f.title).join(', ')}`);
  });

  it('all finding IDs match CA-HKV-NNN', () => {
    for (const f of result.findings) {
      assert.match(f.id, /^CA-HKV-\d{3}$/);
    }
  });
});

describe('HKV scanner — broken project', () => {
  let result;
  beforeEach(async () => {
    resetCounter();
    const discovery = await discoverConfigFiles(resolve(FIXTURES, 'broken-project'));
    result = await scan(resolve(FIXTURES, 'broken-project'), discovery);
  });

  it('detects unknown hook event', () => {
    // CA-HKV-001 in broken-project, evidence='InvalidEvent'.
    const found = result.findings.some(f => f.scanner === 'HKV' && /InvalidEvent/.test(f.evidence || ''));
    assert.ok(found, 'Should detect InvalidEvent');
  });

  it('detects object matcher (should be string)', () => {
    // CA-HKV-002 in broken-project, evidence contains the object matcher snippet.
    const found = result.findings.some(f => f.scanner === 'HKV' && f.id === 'CA-HKV-002');
    assert.ok(found, 'Should detect nested object matcher');
  });

  it('detects invalid handler type', () => {
    // CA-HKV-003 in broken-project, evidence='type: "invalid_type"'.
    const found = result.findings.some(f => f.scanner === 'HKV' && /invalid_type/.test(f.evidence || ''));
    assert.ok(found, 'Should detect invalid_type');
  });

  it('detects timeout below minimum', () => {
    // CA-HKV-004 in broken-project, evidence='timeout: 500'.
    const found = result.findings.some(f => f.scanner === 'HKV' && /timeout:\s*500/.test(f.evidence || ''));
    assert.ok(found, 'Should detect timeout of 500ms');
  });

  it('marks unknown event as high severity', () => {
    // CA-HKV-001 in broken-project = unknown-event finding (evidence='InvalidEvent').
    const f = result.findings.find(x => x.scanner === 'HKV' && /InvalidEvent/.test(x.evidence || ''));
    assert.strictEqual(f?.severity, 'high');
  });
});

describe('HKV scanner — verbose hook output (v5 M5)', () => {
  it('flags hook script with > 50 console.log/stdout.write lines (low)', async () => {
    resetCounter();
    const path = resolve(FIXTURES, 'hooks-verbose');
    const discovery = await discoverConfigFiles(path);
    const result = await scan(path, discovery);
    // Verbose-hook finding in hooks-verbose; evidence carries the line-count metric.
    const f = result.findings.find(x => x.scanner === 'HKV' && /console_log_or_stdout_lines=/.test(x.evidence || ''));
    assert.ok(f, `expected verbose-hook finding; got: ${result.findings.map(x => x.title).join(' | ')}`);
    assert.equal(f.severity, 'low', `expected low, got ${f.severity}`);
    assert.match(f.evidence || '', /console_log_or_stdout_lines=6\d/);
  });

  it('does NOT flag a quiet hook script', async () => {
    resetCounter();
    const path = resolve(FIXTURES, 'hooks-quiet');
    const discovery = await discoverConfigFiles(path);
    const result = await scan(path, discovery);
    const f = result.findings.find(x => x.scanner === 'HKV' && /console_log_or_stdout_lines=/.test(x.evidence || ''));
    assert.equal(f, undefined, `expected no verbose-hook finding; got id=${f?.id}`);
  });
});

describe('HKV scanner — empty project', () => {
  let result;
  beforeEach(async () => {
    resetCounter();
    const discovery = await discoverConfigFiles(resolve(FIXTURES, 'empty-project'));
    result = await scan(resolve(FIXTURES, 'empty-project'), discovery);
  });

  it('returns status ok with 0 findings', () => {
    assert.strictEqual(result.status, 'ok');
    assert.strictEqual(result.findings.length, 0);
  });
});
