import { copyFileSync, existsSync, mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs';
import { join } from 'node:path';
import { tmpdir } from 'node:os';
import { spawnSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';
import { dirname } from 'node:path';

const root = dirname(dirname(fileURLToPath(import.meta.url)));
const failures = [];
const gitignore = readFileSync(join(root, '.gitignore'), 'utf8');
for (const required of ['/modules/', '/sessions/', '/logs/', '/backups/', '/updates/', '/runtime/']) {
  if (!gitignore.split(/\r?\n/).includes(required)) failures.push(`Root-verankerte Ignore-Regel fehlt: ${required}`);
}
for (const forbidden of ['modules/', 'sessions/', 'logs/', 'backups/', 'updates/', 'runtime/']) {
  if (gitignore.split(/\r?\n/).includes(forbidden)) failures.push(`Zu breite Ignore-Regel vorhanden: ${forbidden}`);
}

const temp = mkdtempSync(join(tmpdir(), 'vendoo-ignore-boundary-'));
const write = (rel, value = rel) => {
  const target = join(temp, rel);
  mkdirSync(dirname(target), { recursive: true });
  writeFileSync(target, value, 'utf8');
};
const git = (...args) => spawnSync('git', args, { cwd: temp, encoding: 'utf8' });
try {
  copyFileSync(join(root, '.gitignore'), join(temp, '.gitignore'));
  write('app/modules/listings/routes.mjs', 'export const routes = true;\n');
  write('app/modules/inventory/index.mjs', 'export const inventory = true;\n');
  write('app/modules/inventory/repository.mjs', 'export const repository = true;\n');
  write('app/modules/inventory/routes.mjs', 'export const inventoryRoutes = true;\n');
  write('app/modules/sessions/index.mjs', 'export const sessions = true;\n');
  write('app/logs/source.mjs', 'export const sourceLog = true;\n');
  write('modules/demo/package.vmod', '{}');
  write('sessions/session.json', '{}');
  write('logs/server.log', 'runtime');
  write('backups/backup.txt', 'runtime');
  write('updates/update.txt', 'runtime');
  write('runtime/state.json', '{}');

  let result = git('init', '-q');
  if (result.status !== 0) failures.push(`git init fehlgeschlagen: ${result.stderr}`);
  git('config', 'user.email', 'ci@example.invalid');
  git('config', 'user.name', 'Vendoo CI');

  const sourcePaths = [
    'app/modules/listings/routes.mjs',
    'app/modules/inventory/index.mjs',
    'app/modules/inventory/repository.mjs',
    'app/modules/inventory/routes.mjs',
    'app/modules/sessions/index.mjs',
    'app/logs/source.mjs',
  ];
  const runtimePaths = [
    'modules/demo/package.vmod', 'sessions/session.json', 'logs/server.log',
    'backups/backup.txt', 'updates/update.txt', 'runtime/state.json',
  ];

  for (const rel of sourcePaths) {
    result = git('check-ignore', '-q', '--', rel);
    if (result.status === 0) {
      const detail = git('check-ignore', '-v', '--', rel);
      failures.push(`Produktiver Quellpfad wird ignoriert: ${rel} (${detail.stdout.trim()})`);
    }
  }
  for (const rel of runtimePaths) {
    result = git('check-ignore', '-q', '--', rel);
    if (result.status !== 0) failures.push(`Runtime-Pfad wird nicht ignoriert: ${rel}`);
  }

  result = git('add', '--all');
  if (result.status !== 0) failures.push(`git add --all fehlgeschlagen: ${result.stderr}`);
  const tracked = new Set(git('ls-files').stdout.split(/\r?\n/).filter(Boolean));
  for (const rel of sourcePaths) if (!tracked.has(rel)) failures.push(`Produktiver Quellpfad wurde nicht getrackt: ${rel}`);
  for (const rel of runtimePaths) if (tracked.has(rel)) failures.push(`Runtime-Pfad wurde fälschlich getrackt: ${rel}`);
} finally {
  rmSync(temp, { recursive: true, force: true });
}

if (failures.length) {
  console.error(`Git-Ignore-Grenzprüfung 1.41.2 fehlgeschlagen (${failures.length}):`);
  failures.forEach(item => console.error(`- ${item}`));
  process.exit(1);
}
console.log('Git-Ignore-Grenzprüfung 1.41.2 erfolgreich: app/modules und app/modules/sessions werden getrackt; nur Root-Runtimeordner bleiben ausgeschlossen.');