import 'dart:io';

import 'package:drift/native.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:motorcycle_dash/database/database.dart';
// ignore: depend_on_referenced_packages
import 'package:sqlite3/sqlite3.dart' as sqlite;

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();
  late Directory directory;
  late File file;

  setUp(() async {
    directory = await Directory.systemTemp.createTemp('ride-timestamp-test-');
    file = File('${directory.path}/copy.sqlite');
    final db = AppDatabase.forTesting(NativeDatabase(file));
    await db.customSelect('SELECT 1').get();
    await db.close();
  });
  tearDown(() => directory.delete(recursive: true));

  final backupPath = Platform.environment['MOTORSIGNAL_TEST_BACKUP'];
  if (backupPath != null) {
    test('verified device backup copy preserves every original table row', () async {
      await File(backupPath).copy(file.path);
      final raw = sqlite.sqlite3.open(file.path);
      final names = raw.select("SELECT name FROM sqlite_master WHERE type = 'table'")
          .map((r) => r['name'] as String).toList();
      final before = {
        for (final name in names)
          name: raw.select('SELECT * FROM "$name" ORDER BY rowid')
              .map((r) => Map<String, Object?>.from(r)).toList(),
      };
      raw.close();
      final db = AppDatabase.forTesting(NativeDatabase(file));
      addTearDown(db.close);
      expect(await db.select(db.rides).get(), hasLength(22));
      expect(await db.select(db.telemetrySamples).get(), hasLength(67798));
      for (final name in names) {
        final rows = await db.customSelect('SELECT * FROM "$name" ORDER BY rowid').get();
        expect(rows.map((r) => r.data).toList(), before[name], reason: name);
      }
      expect(await db.customSelect('SELECT * FROM ride_timestamp_archive').get(), isEmpty);
      expect((await db.customSelect('PRAGMA integrity_check').get()).single.data.values.single, 'ok');
      await db.close();
    });
  }

  test('v7 mixed dates migrate once with exact originals and children preserved', () async {
    final raw = sqlite.sqlite3.open(file.path);
    for (final row in [
      [1, 1791761491, null],
      [2, 1791761491123, 1791761501456],
      [3, 1791761491123456, 1791761501654321],
      [4, 1791761491, 1791761501000],
    ]) {
      raw.execute('INSERT INTO rides (id, start_time, end_time, cloud_ride_id) VALUES (?, ?, ?, ?)',
          [...row, 'ride_preserved_${row.first}']);
    }
    raw.execute('INSERT INTO telemetry_samples (ride_id, timestamp, speed) VALUES (2, 1791761491, 17.5)');
    raw.execute('PRAGMA user_version = 7');
    final before = raw.select('SELECT * FROM rides ORDER BY id').map((r) => Map<String, Object?>.from(r)).toList();
    final children = raw.select('SELECT * FROM telemetry_samples').map((r) => Map<String, Object?>.from(r)).toList();
    raw.close();

    for (var open = 0; open < 2; open++) {
      final db = AppDatabase.forTesting(NativeDatabase(file));
      addTearDown(db.close);
      final rides = await db.select(db.rides).get();
      expect(rides, hasLength(4));
      expect(rides.map((r) => r.startTime.toUtc().millisecondsSinceEpoch), everyElement(1791761491000));
      expect(rides.first.endTime, isNull);
      expect(rides.skip(1).map((r) => r.endTime!.toUtc().millisecondsSinceEpoch), everyElement(1791761501000));
      final archive = await db.customSelect('SELECT * FROM ride_timestamp_archive ORDER BY ride_id').get();
      expect(archive, hasLength(3));
      expect(archive.first.data['original_start_time'], 1791761491123);
      expect(archive[1].data['original_start_time'], 1791761491123456);
      expect(archive[1].data['original_end_time'], 1791761501654321);
      expect((await db.customSelect('SELECT * FROM telemetry_samples').get()).map((r) => r.data).toList(), children);
      final after = (await db.customSelect('SELECT * FROM rides ORDER BY id').get()).map((r) => Map<String, Object?>.from(r.data)).toList();
      for (var i = 0; i < before.length; i++) {
        after[i]['start_time'] = before[i]['start_time'];
        after[i]['end_time'] = before[i]['end_time'];
      }
      expect(after, before);
      await db.close();
    }

    final restored = sqlite.sqlite3.open(file.path);
    restored.execute(File('tools/rollback_ride_timestamps_v8.sql').readAsStringSync());
    expect(restored.select('SELECT * FROM rides ORDER BY id').map((r) => Map<String, Object?>.from(r)).toList(), before);
    expect(restored.select('PRAGMA user_version').single['user_version'], 7);
    expect(restored.select('SELECT COUNT(*) AS n FROM ride_timestamp_archive').single['n'], 3);
    restored.close();
  });

  test('unrecognized large timestamp aborts without rewriting records', () async {
    final raw = sqlite.sqlite3.open(file.path);
    raw.execute('INSERT INTO rides (start_time) VALUES (1791761491123), (9223372036854775807)');
    raw.execute('PRAGMA user_version = 7');
    raw.close();
    final db = AppDatabase.forTesting(NativeDatabase(file));
    addTearDown(db.close);
    await expectLater(db.select(db.rides).get(), throwsA(isA<StateError>()));
    await db.close();
    final check = sqlite.sqlite3.open(file.path);
    expect(check.select('SELECT start_time FROM rides ORDER BY id').map((r) => r['start_time']).toList(), [1791761491123, 9223372036854775807]);
    expect(check.select('PRAGMA user_version').single['user_version'], 7);
    check.close();
  });
}