import { Database } from 'bun:sqlite';
import { createBackup, latestBackupTime, type BackupConfig } from '../src/ops/backups';

const path = process.argv[2];
if (!path || !process.argv[3]) throw new Error('Expected database path and backup configuration');
const config = JSON.parse(process.argv[3]) as BackupConfig;
const latest = latestBackupTime(config);
if (latest && Date.now() - latest < config.intervalMs) console.log(JSON.stringify({ timestamp: latest, created: false }));
else {
  // SQLite needs writable WAL bookkeeping when the first snapshot opens a cold database.
  // Only snapshot SQL runs here; never create a missing source file.
  const db = new Database(path, { readwrite: true, create: false, strict: true });
  try {
    db.exec('PRAGMA busy_timeout=5000');
    createBackup(db, config);
    console.log(JSON.stringify({ timestamp: latestBackupTime(config), created: true }));
  } finally { db.close(); }
}