import 'dart:io';

import 'package:sqflite_common/sqlite_api.dart';

Future<void> addDataFromRADKFILE(Database db) async {
  final String content = File('data/radkfile_utf8').readAsStringSync();
  final Iterable<String> blocks =
      content.replaceAll(RegExp(r'^#.*$'), '').split(r'$').skip(2);

  print('[RADKFILE] Writing to database...');
  final b = db.batch();

  for (final block in blocks) {
    final String radical = block[1];
    final List<String> kanjiList = block
        .replaceFirst(RegExp(r'.*\n'), '')
        .split('')
      ..removeWhere((e) => e == '' || e == '\n');

    for (final kanji in kanjiList.toSet()) {
      b.insert(
        'RADKFILE',
        {
          'radical': radical,
          'kanji': kanji,
        },
      );
    }
  }

  b.commit();
}