import { readFileSync } from 'node:fs';
import { PrismaClient } from '@prisma/client';
let prisma;
try {
  const main = Object.fromEntries(readFileSync('/proc/1/environ', 'utf8').split('\0').filter(Boolean).map(line => {
    const index = line.indexOf('='); return [line.slice(0, index), line.slice(index + 1)];
  }));
  for (const key of ['POSTGRES_PASSWORD', 'PGADMIN_DEFAULT_PASSWORD', 'APP_DATABASE_PASSWORD', 'MIGRATION_DATABASE_URL']) {
    if ((process.env[key] && process.env[key] !== 'unavailable-in-app') || main[key]) throw new Error('Administrative credential reached the app.');
  }
  // Configured global/legacy URLs must not expose an administrative login either.
  if (process.env.DATABASE_URL && process.env.DATABASE_URL !== 'unavailable-in-app') throw new Error('Hosting injected a legacy database URL.');
  if (new URL(main.DATABASE_URL).username !== 'kita_runtime') throw new Error('Wrong application database role.');
  prisma = new PrismaClient({ datasourceUrl: main.DATABASE_URL });
  const [row] = await prisma.$queryRawUnsafe('SELECT current_user');
  if (row.current_user !== 'kita_runtime') throw new Error('Wrong effective database role.');
  console.log('Runtime isolation verified: no administrative credentials in container/app environment; current_user=kita_runtime.');
} catch {
  console.error('Runtime isolation verification failed. Credential values were not logged.');
  process.exitCode = 1;
} finally {
  await prisma?.$disconnect();
}