aves/lib/widgets/dialogs/entry_editors/remove_metadata_dialog.dart

import 'package:aves/model/settings/settings.dart';
import 'package:aves/ref/brand_colors.dart';
import 'package:aves/theme/colors.dart';
import 'package:aves/theme/durations.dart';
import 'package:aves/view/view.dart';
import 'package:aves/widgets/common/basic/text/outlined.dart';
import 'package:aves/widgets/common/extensions/build_context.dart';
import 'package:aves/widgets/common/fx/highlight_decoration.dart';
import 'package:aves/widgets/common/identity/highlight_title.dart';
import 'package:aves/widgets/dialogs/aves_dialog.dart';
import 'package:aves_model/aves_model.dart';
import 'package:collection/collection.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

class RemoveEntryMetadataDialog extends StatefulWidget {
  static const routeName = '/dialog/remove_entry_metadata';

  final bool showJpegTypes;

  const RemoveEntryMetadataDialog({
    super.key,
    required this.showJpegTypes,
  });

  @override
  State<RemoveEntryMetadataDialog> createState() => _RemoveEntryMetadataDialogState();
}

class _RemoveEntryMetadataDialogState extends State<RemoveEntryMetadataDialog> {
  late final List<MetadataType> _mainOptions, _moreOptions;
  final Set<MetadataType> _types = {};
  bool _showMore = false;
  final ValueNotifier<bool> _isValidNotifier = ValueNotifier(false);

  @override
  void initState() {
    super.initState();
    final byMain = groupBy([
      ...MetadataTypes.common,
      if (widget.showJpegTypes) ...MetadataTypes.jpeg,
    ], MetadataTypes.main.contains);
    _mainOptions = (byMain[true] ?? [])..sort(_compareTypeText);
    _moreOptions = (byMain[false] ?? [])..sort(_compareTypeText);
    _validate();
  }

  @override
  void dispose() {
    _isValidNotifier.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final l10n = context.l10n;
    final animationDuration = context.select<DurationsData, Duration>((v) => v.expansionTileAnimation);
    return AvesDialog(
      title: l10n.removeEntryMetadataDialogTitle,
      scrollableContent: [
        ..._mainOptions.map(_toTile),
        if (_moreOptions.isNotEmpty)
          Padding(
            padding: const EdgeInsets.only(bottom: 1),
            child: ExpansionPanelList(
              expansionCallback: (index, isExpanded) {
                setState(() => _showMore = isExpanded);
              },
              animationDuration: animationDuration,
              expandedHeaderPadding: EdgeInsets.zero,
              elevation: 0,
              children: [
                ExpansionPanel(
                  headerBuilder: (context, isExpanded) => ListTile(
                    title: Text(l10n.removeEntryMetadataDialogMore),
                  ),
                  body: Column(
                    children: _moreOptions.map(_toTile).toList(),
                  ),
                  isExpanded: _showMore,
                  canTapOnHeader: true,
                  backgroundColor: Colors.transparent,
                ),
              ],
            ),
          ),
      ],
      actions: [
        const CancelButton(),
        ValueListenableBuilder<bool>(
          valueListenable: _isValidNotifier,
          builder: (context, isValid, child) {
            return TextButton(
              onPressed: isValid ? () => _submit(context) : null,
              child: Text(context.l10n.applyButtonLabel),
            );
          },
        ),
      ],
    );
  }

  int _compareTypeText(MetadataType a, MetadataType b) => a.getText().compareTo(b.getText());

  Widget _toTile(MetadataType type) {
    final text = type.getText();
    Widget child = OutlinedText(
      textSpans: [
        TextSpan(
          text: text,
          style: TextStyle(
            shadows: HighlightTitle.shadows(context),
          ),
        ),
      ],
      outlineColor: Theme.of(context).scaffoldBackgroundColor,
    );
    if (context.select<Settings, bool>((v) => v.themeColorMode == AvesThemeColorMode.polychrome)) {
      final colors = context.watch<AvesColorsData>();
      child = Container(
        padding: const EdgeInsets.symmetric(horizontal: 2),
        decoration: HighlightDecoration(
          color: colors.fromBrandColor(BrandColors.get(text)) ?? colors.fromString(text),
        ),
        child: child,
      );
    }

    return SwitchListTile(
      value: _types.contains(type),
      onChanged: (selected) {
        selected ? _types.add(type) : _types.remove(type);
        _validate();
        setState(() {});
      },
      title: Align(
        alignment: Alignment.centerLeft,
        child: child,
      ),
    );
  }

  void _validate() => _isValidNotifier.value = _types.isNotEmpty;

  void _submit(BuildContext context) => Navigator.maybeOf(context)?.pop(_types);
}