// tests/helpers/claude-security-report.mjs
// A Claude Security report folder as a changes scan writes it (Claude Security
// 0.12.0: scripts/render_report.py, scripts/lib/finding.py, scripts/lib/plugin.py),
// for the tests of lib/review/security-engine.mjs `convert`:
//
//   <dir>/CLAUDE-SECURITY-<UTC YYYYMMDD-HHMMSS>/
//     .gitignore                      `*`
//     CLAUDE-SECURITY-RESULTS.md
//     CLAUDE-SECURITY-RESULTS.jsonl   one finding per line
//     CLAUDE-SECURITY-RESULTS.sarif
//     CLAUDE-SECURITY-REVISION-<first 12 hex of the commit>[-dirty].json   the stamp
//
// `writeReport` takes the commit range and lets a test change any part of the
// stamp (`stamp: (s) => ...`) or write the JSONL text itself (`jsonl`).

import { mkdirSync, writeFileSync } from 'node:fs';
import { join } from 'node:path';

/** One JSONL record in the field order the products carry, with `over` applied. */
export function record(over = {}) {
  return {
    id: 'F1',
    title: 'Shell command built from the branch name',
    impact: 'A pushed branch name runs a command on the machine that checks it out',
    file: 'src/run.mjs',
    line: 12,
    description: 'checkout() interpolates the branch name into a shell string.',
    exploit_scenario: 'A branch named `x;touch pwned` runs `touch pwned` when it is checked out',
    preconditions: ['the attacker can push a branch'],
    category: 'Injection',
    severity: 'HIGH',
    confidence: 'high',
    recommendation: 'Pass the branch name as an argv element through execFile, never through a shell string',
    cwe_id: 'CWE-78',
    snippet: 'exec(`git checkout ${branch}`)',
    symbol: 'checkout',
    declared_line: 12,
    via_change: null,
    other_cwe_ids: [],
    claudeSecurityPluginFindingId: 'a3f9c2d1e0b4',
    ...over,
  };
}

/** The stamp of a verified changes scan of `base..head`. */
export function stampOf({ head, base, dirty = false, records = [] }) {
  const count = (sev) => records.filter((r) => r.severity === sev).length;
  return {
    generated_at: '2026-11-08T12:00:00+00:00',
    duration_s: 412,
    scan_id: '6f1d2a4e-5b7c-4e1a-9d3f-2c8b0a7e6d51',
    mode: 'changes',
    scan_prefix: '',
    scope: [],
    revision: { versioned: true, commit: head, branch: 'feat/x', dirty, base, merge_base: base },
    revision_source: 'git',
    model: 'claude-opus-5-5',
    effort: 'high',
    run_shape: {
      requested_effort: 'high', collapsed: null, source: 'coverage.json',
      diff_files: 2, diff_lines: 30, pre_existing: 0, scope_files: 2,
      empty_diff: false, empty_scope: false, researchers_dispatched: 3, verification_runs: 1,
    },
    findings: { total: records.length, critical: count('CRITICAL'), high: count('HIGH'), medium: count('MEDIUM'), low: count('LOW') },
    verification: {
      status: 'verified', candidates: records.length, candidates_deduped: records.length,
      panel_votes: 3 * records.length, panel_reviewed_findings: records.length,
      panel_quorum_findings: records.length, unreviewed_candidate_sites: 0,
      incomplete_panel_candidates: 0, attested_findings: 0, reason: null, reason_kind: null,
      researchers_dispatched: 3, researchers_returned: 3,
    },
  };
}

/**
 * Write one report folder under `dir` and return its path.
 * @param {string} dir - the scanned repo's root
 * @param {{ head: string, base: string, ts?: string, dirty?: boolean, records?: object[],
 *   jsonl?: string|null, stamp?: (s: object) => object, stampName?: string }} opts
 *   `jsonl: null` writes no JSONL file; `stamp` returns the stamp to write.
 */
export function writeReport(dir, { head, base, ts = '20261108-120000', dirty = false, records = [record()], jsonl, stamp = (s) => s, stampName }) {
  const folder = join(dir, `CLAUDE-SECURITY-${ts}`);
  mkdirSync(folder, { recursive: true });
  writeFileSync(join(folder, '.gitignore'), '*\n');
  writeFileSync(join(folder, 'CLAUDE-SECURITY-RESULTS.md'), `# Claude Security results\n\n${records.length} finding(s).\n`);
  writeFileSync(join(folder, 'CLAUDE-SECURITY-RESULTS.sarif'), JSON.stringify({ version: '2.1.0', runs: [] }));
  if (jsonl !== null) {
    writeFileSync(join(folder, 'CLAUDE-SECURITY-RESULTS.jsonl'),
      jsonl ?? records.map((r) => `${JSON.stringify(r)}\n`).join(''));
  }
  const name = stampName ?? `CLAUDE-SECURITY-REVISION-${head.slice(0, 12)}${dirty ? '-dirty' : ''}.json`;
  writeFileSync(join(folder, name), JSON.stringify(stamp(stampOf({ head, base, dirty, records })), null, 2));
  return folder;
}