import { spawn } from 'node:child_process'
const source = process.env.DATABASE_URL,
  destination = process.argv[2]
if (!source || !destination) throw new Error('DATABASE_URL and backup output path required')
const url = new URL(source),
  child = spawn('pg_dump', ['--format=custom', '--file', destination], {
    stdio: ['ignore', 'inherit', 'inherit'],
    env: {
      ...process.env,
      PGHOST: url.hostname,
      PGPORT: url.port || '5432',
      PGUSER: decodeURIComponent(url.username),
      PGPASSWORD: decodeURIComponent(url.password),
      PGDATABASE: url.pathname.slice(1),
    },
  })
await new Promise<void>((resolve, reject) => {
  child.once('error', reject)
  child.once('exit', (code) => (code === 0 ? resolve() : reject(new Error('pg_dump failed'))))
})