import 'package:jadb/table_names/jmdict.dart';
import 'package:jadb/table_names/kanjidic.dart';
import 'package:jadb/table_names/radkfile.dart';
import 'package:jadb/table_names/tanos_jlpt.dart';
import 'package:sqflite_common/sqlite_api.dart';

class DatasourceVersions {
  final String jmdictVersion;
  final DateTime jmdictDate;
  final String jmdictHash;

  final String kanjidic2Version;
  final DateTime kanjidic2Date;
  final String kanjidic2Hash;

  final String radkfileVersion;
  final DateTime radkfileDate;
  final String radkfileHash;

  final String tanosJlptVersion;
  final DateTime tanosJlptDate;
  final String tanosJlptHash;

  const DatasourceVersions({
    required this.jmdictVersion,
    required this.jmdictDate,
    required this.jmdictHash,
    required this.kanjidic2Version,
    required this.kanjidic2Date,
    required this.kanjidic2Hash,
    required this.radkfileVersion,
    required this.radkfileDate,
    required this.radkfileHash,
    required this.tanosJlptVersion,
    required this.tanosJlptDate,
    required this.tanosJlptHash,
  });
}

DateTime _parseDateTime(String dateString) {
  try {
    return DateTime.parse(dateString);
  } catch (e) {
    if (RegExp(r'^\d{4}-\d{2}$').hasMatch(dateString)) {
      return DateTime.parse('$dateString-01');
    } else if (RegExp(r'^\d{4}$').hasMatch(dateString)) {
      return DateTime.parse('$dateString-01-01');
    } else {
      throw FormatException('Invalid date format: $dateString');
    }
  }
}

Future<DatasourceVersions> getDatasourceVersions(
  final DatabaseExecutor connection,
) async {
  final jmdictVersion = await connection
      .query(JMdictTableNames.version)
      .then((rows) => rows.first);
  final kanjidic2Version = await connection
      .query(KANJIDICTableNames.version)
      .then((rows) => rows.first);
  final radkfileVersion = await connection
      .query(RADKFILETableNames.version)
      .then((rows) => rows.first);
  final tanosJlptVersion = await connection
      .query(TanosJLPTTableNames.version)
      .then((rows) => rows.first);

  return DatasourceVersions(
    jmdictVersion: jmdictVersion['version'] as String,
    jmdictDate: _parseDateTime(jmdictVersion['date'].toString()),
    jmdictHash: jmdictVersion['hash'] as String,
    kanjidic2Version: kanjidic2Version['version'] as String,
    kanjidic2Date: _parseDateTime(kanjidic2Version['date'].toString()),
    kanjidic2Hash: kanjidic2Version['hash'] as String,
    radkfileVersion: radkfileVersion['version'] as String,
    radkfileDate: _parseDateTime(radkfileVersion['date'].toString()),
    radkfileHash: radkfileVersion['hash'] as String,
    tanosJlptVersion: tanosJlptVersion['version'] as String,
    tanosJlptDate: _parseDateTime(tanosJlptVersion['date'].toString()),
    tanosJlptHash: tanosJlptVersion['hash'] as String,
  );
}