#!/usr/bin/env node
import { execFileSync } from 'node:child_process';
import { existsSync, readdirSync, readFileSync, statSync } from 'node:fs';
import { dirname, join, relative } from 'node:path';
import { fileURLToPath } from 'node:url';

const root = dirname(dirname(fileURLToPath(import.meta.url)));
const failures = [];
const warnings = [];
const ignoredArtifacts = [];
const showLocalArtifacts =
  process.env.PROJECTBRAIN_AUDIT_VERBOSE_LOCAL_ARTIFACTS === '1';

const gitLines = (args) => {
  try {
    return execFileSync('git', args, { cwd: root, encoding: 'utf8', stdio: ['ignore', 'pipe', 'ignore'] })
      .split(/\r?\n/)
      .map((line) => line.trim())
      .filter(Boolean);
  } catch {
    return [];
  }
};

const isTracked = (path) => gitLines(['ls-files', '--', path]).length > 0;
const isIgnored = (path) => gitLines(['check-ignore', '--', path]).length > 0;
const reportArtifact = (path, kind = 'path') => {
  const absolute = join(root, path);
  if (!existsSync(absolute)) return;
  if (isTracked(path)) {
    failures.push(`Forbidden tracked release artifact/${kind} exists: ${path}`);
  } else if (isIgnored(path)) {
    ignoredArtifacts.push(`Ignored local artifact/${kind} present but not release-blocking: ${path}`);
  } else {
    failures.push(`Forbidden unignored release artifact/${kind} exists: ${path}`);
  }
};

const forbiddenPaths = [
  'node_modules',
  'backend/node_modules',
  'dist',
  'backend/dist',
  'checkpoints',
  'src/App.css',
  'src/globals.css',
];

for (const path of forbiddenPaths) {
  reportArtifact(path);
}

const forbiddenFilePatterns = [/^vite-.*\.log$/, /\.zip$/i, /\.log$/i];
const rootFiles = existsSync(root) ? readdirSync(root) : [];
for (const file of rootFiles) {
  if (forbiddenFilePatterns.some((pattern) => pattern.test(file))) {
    reportArtifact(file, 'file');
  }
}

const textFilesToScan = [
  'package.json',
  'vite.config.ts',
  'index.html',
  'README.md',
  'backend/README.md',
];
const forbiddenText = [/componentTagger/i, /component-tagger/i];
for (const path of textFilesToScan) {
  const absolute = join(root, path);
  if (!existsSync(absolute)) {
    warnings.push(`Expected scan file missing: ${path}`);
    continue;
  }
  const content = readFileSync(absolute, 'utf8');
  for (const pattern of forbiddenText) {
    if (pattern.test(content)) {
      failures.push(`Forbidden branding/tooling text ${pattern} found in ${path}`);
    }
  }
}

const expectedFiles = [
  '.env.example',
  'backend/.env.example',
  'Dockerfile.frontend',
  'backend/Dockerfile',
  'docker-compose.yml',
  'docker-compose.dev.yml',
  'docker-compose.release.yml',
  'scripts/stage-release-oci.sh',
  'docs/PROJECTBRAIN_DOCUMENTATION_INDEX.md',
  'docs/PROJECTBRAIN_OPERATOR_RELEASE_GUIDE.md',
  'docs/FULL_VERSION_ROADMAP.md',
  'docs/VERTICAL_SLICE_CORE_FLOW_PLAN.md',
  'public/site.webmanifest',
  'public/favicon.svg',
  'public/favicon.ico',
];
for (const path of expectedFiles) {
  if (!existsSync(join(root, path))) {
    warnings.push(`Expected project hygiene file missing: ${path}`);
  }
}

const workflowPaths = ['.gitea/workflows/ci.yml', '.gitea/workflows/release.yml'];
const workflow = workflowPaths
  .map((path) => readFileSync(join(root, path), 'utf8'))
  .join('\n');
for (const marker of [
  'file: Dockerfile.unraid',
  'Record immutable archive digests',
  'Scan Unraid release image',
  'archive-sha256.txt',
  'trivy-unraid.json',
  'VITE_PROJECTBRAIN_COMMIT=${{ github.sha }}',
  'org.opencontainers.image.revision=${{ github.sha }}',
]) {
  if (!workflow.includes(marker)) failures.push(`Release workflow is missing required artifact evidence marker: ${marker}`);
}
if (workflow.includes('Dockerfile.backend')) {
  failures.push('Release workflow references nonexistent Dockerfile.backend; use backend/Dockerfile.');
}
if (/aquasec\/trivy(?::[\w.-]+)(?!@sha256:)/.test(workflow) || !workflow.includes('aquasec/trivy@sha256:')) {
  failures.push('Trivy containers must be pinned to an immutable sha256 digest.');
}
if (/uses:\s+(?!docker:\/\/)[^\s@]+@(?![a-f0-9]{40}(?:\s|$))/.test(workflow)) {
  failures.push('External workflow actions must be pinned to immutable 40-character commit SHAs.');
}

const maxLargeFileBytes = 5 * 1024 * 1024;
const ignoredDirs = new Set(['.git', 'node_modules', 'backend/node_modules']);
function walk(dir) {
  for (const entry of readdirSync(dir)) {
    const absolute = join(dir, entry);
    const rel = relative(root, absolute).replaceAll('\\\\', '/');
    if (ignoredDirs.has(rel) || ignoredDirs.has(entry)) continue;
    const stat = statSync(absolute);
    if (stat.isDirectory()) {
      walk(absolute);
    } else if (stat.size > maxLargeFileBytes) {
      warnings.push(`Large file in source tree (${Math.round(stat.size / 1024 / 1024)}MB): ${rel}`);
    }
  }
}
walk(root);

console.log('ProjectBrain release hygiene check');
console.log('====================================');
if (ignoredArtifacts.length) {
  if (showLocalArtifacts) {
    console.log('\nLocal ignored artifacts:');
    for (const artifact of ignoredArtifacts) console.log(`- ${artifact}`);
  }
}
if (warnings.length) {
  console.log('\nWarnings:');
  for (const warning of warnings) console.log(`- ${warning}`);
}
if (failures.length) {
  console.log('\nFailures:');
  for (const failure of failures) console.log(`- ${failure}`);
  process.exit(1);
}
console.log('\nPASS: no blocking release hygiene issues found.');