import 'package:mangayomi/main.dart';
import 'package:mangayomi/models/chapter.dart';
import 'package:mangayomi/models/settings.dart';
import 'package:mangayomi/modules/manga/reader/mixins/chapter_reader_settings_mixin.dart';
import 'package:mangayomi/modules/manga/reader/mixins/chapter_controller_mixin.dart';
import 'package:riverpod_annotation/riverpod_annotation.dart';
part 'novel_reader_controller_provider.g.dart';

@riverpod
class NovelReaderController extends _$NovelReaderController
    with ChapterControllerMixin, ChapterReaderSettingsMixin {
  @override
  void build({required Chapter chapter}) {}

  // Keep incognitoMode as a final field (read once, not on every access).
  @override
  final bool incognitoMode = isar.settings.getSync(227)!.incognitoMode!;

  // Override getIsarSetting to add per-instance caching; callers that mutate
  // settings must call _invalidateSettingsCache() afterwards.
  Settings? _cachedSettings;
  @override
  void onSettingsMutated() => _cachedSettings = null;

  @override
  Settings getIsarSetting() => _cachedSettings ??= isar.settings.getSync(227)!;

  // ---------------------------------------------------------------------------
  // Scroll-position tracking
  // ---------------------------------------------------------------------------

  void setChapterOffset(double newOffset, double maxOffset, bool save) {
    if (incognitoMode) return;
    final isRead = (newOffset / (maxOffset != 0 ? maxOffset : 1)) >= 0.9;
    if (isRead || save) {
      final ch = chapter;
      isar.writeTxnSync(() {
        ch.isRead = isRead;
        ch.lastPageRead = (maxOffset != 0 ? newOffset / maxOffset : 0)
            .toString();
        ch.updatedAt = DateTime.now().millisecondsSinceEpoch;
        isar.chapters.putSync(ch);
      });
    }
  }
}