phylum/client/lib/libphylum/db/native.dart

import 'dart:io';

import 'package:drift/drift.dart';
import 'package:drift/native.dart';
import 'package:path/path.dart' as p;
import 'package:sqlite3/sqlite3.dart';

QueryExecutor openDatabase({
  required Directory? storageDir,
  required Directory? tmpDir,
  required String id,
}) {
  return LazyDatabase(() async {
    final file = _dbFile(storageDir, id);
    sqlite3.tempDirectory = tmpDir!.path;

    return NativeDatabase.createInBackground(file);
  });
}

Future<void> deleteDatabase({
  required Directory? storageDir,
  required String id,
}) {
  return _dbFile(storageDir, id).delete();
}

File _dbFile(Directory? storageDir, String id) {
  return File(p.join(storageDir!.path, '$id-phylum.db'));
}