reset method

@override Future reset()

Implementation

@override
Future reset() async {
  await _init();
  var r = await connection
      .query('SELECT path from migrations ORDER BY batch DESC;');
  var existing = r.expand((x) => x).cast<String>();
  var toRun = existing.where(migrations.containsKey).toList();

  if (toRun.isNotEmpty) {
    for (var k in toRun.reversed) {
      var migration = migrations[k]!;
      var schema = PostgresSchema();
      migration.down(schema);
      _log.info('Removed "$k" from "migrations" table.');
      await schema.run(connection).then((_) {
        return connection
            .execute('DELETE FROM migrations WHERE path = \'$k\';');
      });
    }
  } else {
    _log.warning('Nothing to remove from "migrations" table.');
  }
}