import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:relationship_saver/core/config/app_theme.dart';
import 'package:relationship_saver/features/local/local_models.dart';
import 'package:relationship_saver/features/local/local_repository.dart';
import 'package:relationship_saver/features/shared/frosted_card.dart';

class SelectedPersonIdNotifier extends Notifier<String?> {
  @override
  String? build() => null;

  void select(String id) {
    state = id;
  }

  void clear() {
    state = null;
  }
}

final NotifierProvider<SelectedPersonIdNotifier, String?>
selectedPersonIdProvider = NotifierProvider<SelectedPersonIdNotifier, String?>(
  SelectedPersonIdNotifier.new,
);

enum PeopleSortOption { affinity, nextMoment, alphabetical }

class PeopleSearchQueryNotifier extends Notifier<String> {
  @override
  String build() => '';

  void set(String value) {
    state = value;
  }
}

final NotifierProvider<PeopleSearchQueryNotifier, String>
peopleSearchQueryProvider = NotifierProvider<PeopleSearchQueryNotifier, String>(
  PeopleSearchQueryNotifier.new,
);

class PeopleRelationshipFilterNotifier extends Notifier<String?> {
  @override
  String? build() => null;

  void set(String? value) {
    state = value;
  }
}

final NotifierProvider<PeopleRelationshipFilterNotifier, String?>
peopleRelationshipFilterProvider =
    NotifierProvider<PeopleRelationshipFilterNotifier, String?>(
      PeopleRelationshipFilterNotifier.new,
    );

class PeopleSortOptionNotifier extends Notifier<PeopleSortOption> {
  @override
  PeopleSortOption build() => PeopleSortOption.affinity;

  void set(PeopleSortOption value) {
    state = value;
  }
}

final NotifierProvider<PeopleSortOptionNotifier, PeopleSortOption>
peopleSortOptionProvider =
    NotifierProvider<PeopleSortOptionNotifier, PeopleSortOption>(
      PeopleSortOptionNotifier.new,
    );

enum _PersonQuickAction { capture, note, idea, reminder }

class PeopleView extends ConsumerWidget {
  const PeopleView({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final AsyncValue<LocalDataState> localData = ref.watch(
      localRepositoryProvider,
    );
    final String searchQuery = ref.watch(peopleSearchQueryProvider);
    final String? relationshipFilter = ref.watch(
      peopleRelationshipFilterProvider,
    );
    final PeopleSortOption sortOption = ref.watch(peopleSortOptionProvider);

    return localData.when(
      data: (LocalDataState data) {
        final List<PersonProfile> allPeople = data.people;
        if (allPeople.isEmpty) {
          return _EmptyPeopleView(onAdd: () => _handleAddPerson(context, ref));
        }

        final List<PersonProfile> people = _applyPeopleFilters(
          allPeople,
          searchQuery: searchQuery,
          relationshipFilter: relationshipFilter,
          sortOption: sortOption,
        );
        final List<String> relationshipOptions = _relationshipOptions(
          allPeople,
        );

        if (people.isEmpty) {
          return _FilteredPeopleEmptyView(
            onClear: () {
              ref.read(peopleSearchQueryProvider.notifier).set('');
              ref.read(peopleRelationshipFilterProvider.notifier).set(null);
            },
          );
        }

        final String selectedId =
            ref.watch(selectedPersonIdProvider) ?? people.first.id;
        final PersonProfile selected = people.firstWhere(
          (PersonProfile person) => person.id == selectedId,
          orElse: () => people.first,
        );

        return LayoutBuilder(
          builder: (BuildContext context, BoxConstraints constraints) {
            final bool isCompact = constraints.maxWidth < 860;
            if (isCompact) {
              return _buildCompactLayout(
                context,
                ref,
                data,
                people,
                selected,
                relationshipOptions,
              );
            }
            return _buildWideLayout(
              context,
              ref,
              data,
              people,
              selected,
              relationshipOptions,
            );
          },
        );
      },
      loading: () => const Center(child: CircularProgressIndicator()),
      error: (Object error, StackTrace stackTrace) {
        return const Center(child: Text('Unable to load people'));
      },
    );
  }

  List<PersonProfile> _applyPeopleFilters(
    List<PersonProfile> people, {
    required String searchQuery,
    required String? relationshipFilter,
    required PeopleSortOption sortOption,
  }) {
    final String query = searchQuery.trim().toLowerCase();
    final String? relationship = relationshipFilter?.trim().toLowerCase();

    final List<PersonProfile> filtered = people
        .where((PersonProfile person) {
          if (relationship != null &&
              relationship.isNotEmpty &&
              person.relationship.trim().toLowerCase() != relationship) {
            return false;
          }
          if (query.isEmpty) {
            return true;
          }
          final String haystack = <String>[
            person.name,
            person.relationship,
            person.location ?? '',
            person.notes,
            ...person.tags,
          ].join(' ').toLowerCase();
          return haystack.contains(query);
        })
        .toList(growable: true);

    filtered.sort((PersonProfile a, PersonProfile b) {
      switch (sortOption) {
        case PeopleSortOption.affinity:
          final int score = b.affinityScore.compareTo(a.affinityScore);
          if (score != 0) {
            return score;
          }
          return a.name.toLowerCase().compareTo(b.name.toLowerCase());
        case PeopleSortOption.nextMoment:
          final int next = a.nextMoment.compareTo(b.nextMoment);
          if (next != 0) {
            return next;
          }
          return a.name.toLowerCase().compareTo(b.name.toLowerCase());
        case PeopleSortOption.alphabetical:
          return a.name.toLowerCase().compareTo(b.name.toLowerCase());
      }
    });

    return filtered;
  }

  List<String> _relationshipOptions(List<PersonProfile> people) {
    final Set<String> seen = <String>{};
    final List<String> values = <String>[];
    for (final PersonProfile person in people) {
      final String relationship = person.relationship.trim();
      if (relationship.isEmpty) {
        continue;
      }
      final String key = relationship.toLowerCase();
      if (seen.add(key)) {
        values.add(relationship);
      }
    }
    values.sort(
      (String a, String b) => a.toLowerCase().compareTo(b.toLowerCase()),
    );
    return values;
  }

  Future<void> _handleAddPerson(BuildContext context, WidgetRef ref) async {
    final List<PersonProfile> existingPeople =
        ref.read(localRepositoryProvider).asData?.value.people ??
        const <PersonProfile>[];
    final _PersonDraft? draft = await _showPersonEditor(
      context,
      title: 'Add Person',
      existingPeople: existingPeople,
    );

    if (draft == null) {
      return;
    }

    await ref
        .read(localRepositoryProvider.notifier)
        .addPerson(
          name: draft.name,
          relationship: draft.relationship,
          notes: draft.notes,
          tags: draft.tags,
          location: draft.location,
        );

    final LocalDataState? latest = ref
        .read(localRepositoryProvider)
        .asData
        ?.value;
    if (latest == null) {
      return;
    }
    for (final PersonProfile person in latest.people) {
      final bool locationMatches =
          (person.location ?? '').trim() == (draft.location ?? '').trim();
      if (person.name == draft.name &&
          person.relationship == draft.relationship &&
          locationMatches) {
        ref.read(selectedPersonIdProvider.notifier).select(person.id);
        break;
      }
    }
  }

  Future<void> _handleEditPerson(
    BuildContext context,
    WidgetRef ref,
    PersonProfile person,
  ) async {
    final List<PersonProfile> existingPeople =
        ref.read(localRepositoryProvider).asData?.value.people ??
        const <PersonProfile>[];
    final _PersonDraft? draft = await _showPersonEditor(
      context,
      title: 'Edit Person',
      initial: _PersonDraft(
        name: person.name,
        relationship: person.relationship,
        notes: person.notes,
        tags: person.tags,
        location: person.location,
      ),
      existingPeople: existingPeople,
      editingPersonId: person.id,
    );

    if (draft == null) {
      return;
    }

    await ref
        .read(localRepositoryProvider.notifier)
        .updatePerson(
          person.copyWith(
            name: draft.name,
            relationship: draft.relationship,
            notes: draft.notes,
            tags: draft.tags,
            location: draft.location,
          ),
        );
  }

  Future<void> _handleDeletePerson(
    BuildContext context,
    WidgetRef ref,
    String personId,
  ) async {
    final bool? confirmed = await showDialog<bool>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: const Text('Delete person?'),
          content: const Text(
            'This will remove the person and related moments from local storage.',
          ),
          actions: <Widget>[
            TextButton(
              onPressed: () => Navigator.of(context).pop(false),
              child: const Text('Cancel'),
            ),
            FilledButton(
              onPressed: () => Navigator.of(context).pop(true),
              child: const Text('Delete'),
            ),
          ],
        );
      },
    );

    if (confirmed != true) {
      return;
    }

    await ref.read(localRepositoryProvider.notifier).deletePerson(personId);
    ref.read(selectedPersonIdProvider.notifier).clear();
  }

  Widget _buildWideLayout(
    BuildContext context,
    WidgetRef ref,
    LocalDataState data,
    List<PersonProfile> people,
    PersonProfile selected,
    List<String> relationshipOptions,
  ) {
    return Padding(
      padding: const EdgeInsets.fromLTRB(28, 24, 28, 28),
      child: Row(
        children: <Widget>[
          Expanded(
            flex: 5,
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                _PeopleHeader(
                  onAdd: () => _handleAddPerson(context, ref),
                  onMerge: () => _handleMergePeople(context, ref, people),
                  compact: false,
                ),
                const SizedBox(height: 12),
                _PeopleListControls(
                  compact: false,
                  relationshipOptions: relationshipOptions,
                ),
                const SizedBox(height: 20),
                Expanded(
                  child: ListView.separated(
                    itemCount: people.length,
                    separatorBuilder: (_, _) => const SizedBox(height: 12),
                    itemBuilder: (BuildContext context, int index) {
                      final PersonProfile person = people[index];
                      return _PersonListItem(
                        person: person,
                        selectedId: selected.id,
                        compact: false,
                        onSelect: () {
                          ref
                              .read(selectedPersonIdProvider.notifier)
                              .select(person.id);
                        },
                      );
                    },
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(width: 18),
          Expanded(
            flex: 6,
            child: FrostedCard(
              child: SingleChildScrollView(
                child: _PersonDetail(
                  person: selected,
                  data: data,
                  onEdit: () => _handleEditPerson(context, ref, selected),
                  onDelete: () =>
                      _handleDeletePerson(context, ref, selected.id),
                  onQuickAction: (_PersonQuickAction action) =>
                      _handleQuickAction(context, ref, selected, action),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildCompactLayout(
    BuildContext context,
    WidgetRef ref,
    LocalDataState data,
    List<PersonProfile> people,
    PersonProfile selected,
    List<String> relationshipOptions,
  ) {
    return Padding(
      padding: const EdgeInsets.fromLTRB(18, 16, 18, 20),
      child: ListView(
        children: <Widget>[
          _PeopleHeader(
            onAdd: () => _handleAddPerson(context, ref),
            onMerge: () => _handleMergePeople(context, ref, people),
            compact: true,
          ),
          const SizedBox(height: 10),
          _PeopleListControls(
            compact: true,
            relationshipOptions: relationshipOptions,
          ),
          const SizedBox(height: 14),
          FrostedCard(
            child: _PersonDetail(
              person: selected,
              data: data,
              compact: true,
              onEdit: () => _handleEditPerson(context, ref, selected),
              onDelete: () => _handleDeletePerson(context, ref, selected.id),
              onQuickAction: (_PersonQuickAction action) =>
                  _handleQuickAction(context, ref, selected, action),
            ),
          ),
          const SizedBox(height: 14),
          Padding(
            padding: const EdgeInsets.symmetric(horizontal: 2),
            child: Row(
              children: <Widget>[
                Text(
                  'All profiles',
                  style: Theme.of(context).textTheme.titleMedium,
                ),
                const Spacer(),
                Text(
                  '${people.length}',
                  style: Theme.of(context).textTheme.labelLarge?.copyWith(
                    color: AppTheme.textSecondary,
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(height: 10),
          ...people.map(
            (PersonProfile person) => Padding(
              padding: const EdgeInsets.only(bottom: 10),
              child: _PersonListItem(
                person: person,
                selectedId: selected.id,
                compact: true,
                onSelect: () {
                  ref.read(selectedPersonIdProvider.notifier).select(person.id);
                },
              ),
            ),
          ),
        ],
      ),
    );
  }

  Future<void> _handleQuickAction(
    BuildContext context,
    WidgetRef ref,
    PersonProfile person,
    _PersonQuickAction action,
  ) async {
    switch (action) {
      case _PersonQuickAction.capture:
        final String? summary = await _showQuickTextCaptureDialog(
          context,
          title: 'Add Capture',
          hintText: 'What happened in this interaction?',
        );
        if (summary == null) {
          return;
        }
        await ref
            .read(localRepositoryProvider.notifier)
            .addMoment(personId: person.id, summary: summary, type: 'capture');
        return;
      case _PersonQuickAction.note:
        final String? note = await _showQuickTextCaptureDialog(
          context,
          title: 'Add Note',
          hintText: 'Write a quick context note...',
        );
        if (note == null) {
          return;
        }
        await ref
            .read(localRepositoryProvider.notifier)
            .addMoment(personId: person.id, summary: note, type: 'note');
        return;
      case _PersonQuickAction.idea:
        final _QuickIdeaDraft? idea = await showDialog<_QuickIdeaDraft>(
          context: context,
          builder: (BuildContext context) => const _QuickIdeaDialog(),
        );
        if (idea == null) {
          return;
        }
        await ref
            .read(localRepositoryProvider.notifier)
            .addIdea(
              type: idea.type,
              title: idea.title,
              details: idea.details,
              personId: person.id,
            );
        return;
      case _PersonQuickAction.reminder:
        final _QuickReminderDraft? reminder =
            await showDialog<_QuickReminderDraft>(
              context: context,
              builder: (BuildContext context) => const _QuickReminderDialog(),
            );
        if (reminder == null) {
          return;
        }
        await ref
            .read(localRepositoryProvider.notifier)
            .addReminder(
              title: reminder.title,
              cadence: reminder.cadence,
              nextAt: reminder.nextAt,
              personId: person.id,
            );
        return;
    }
  }

  Future<void> _handleMergePeople(
    BuildContext context,
    WidgetRef ref,
    List<PersonProfile> people,
  ) async {
    if (people.length < 2) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Need at least two profiles to merge.')),
      );
      return;
    }

    final List<PersonProfile> duplicateCandidates = _duplicateCandidates(
      people,
    );
    if (duplicateCandidates.length < 2) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(
          content: Text(
            'No duplicate-name profiles found. Edit names first if needed.',
          ),
        ),
      );
      return;
    }

    final _MergePeopleDraft? draft = await showDialog<_MergePeopleDraft>(
      context: context,
      builder: (BuildContext context) =>
          _MergePeopleDialog(people: duplicateCandidates),
    );
    if (draft == null) {
      return;
    }

    await ref
        .read(localRepositoryProvider.notifier)
        .mergePersonProfiles(
          sourcePersonId: draft.sourcePersonId,
          targetPersonId: draft.targetPersonId,
        );
    ref.read(selectedPersonIdProvider.notifier).select(draft.targetPersonId);
    if (!context.mounted) {
      return;
    }
    ScaffoldMessenger.of(context).showSnackBar(
      const SnackBar(content: Text('Profiles merged successfully.')),
    );
  }

  List<PersonProfile> _duplicateCandidates(List<PersonProfile> people) {
    final Map<String, List<PersonProfile>> grouped =
        <String, List<PersonProfile>>{};
    for (final PersonProfile person in people) {
      final String key = _normalizeNameKey(person.name);
      if (key.isEmpty) {
        continue;
      }
      grouped.putIfAbsent(key, () => <PersonProfile>[]).add(person);
    }
    final List<PersonProfile> result = <PersonProfile>[];
    for (final List<PersonProfile> group in grouped.values) {
      if (group.length > 1) {
        result.addAll(group);
      }
    }
    return result;
  }

  String _normalizeNameKey(String value) {
    return value
        .trim()
        .toLowerCase()
        .replaceAll(RegExp(r'[^a-z0-9]+'), ' ')
        .replaceAll(RegExp(r'\s+'), ' ');
  }

  Future<_PersonDraft?> _showPersonEditor(
    BuildContext context, {
    required String title,
    _PersonDraft? initial,
    List<PersonProfile> existingPeople = const <PersonProfile>[],
    String? editingPersonId,
  }) {
    final bool compact = MediaQuery.sizeOf(context).width < 720;
    if (compact) {
      return showModalBottomSheet<_PersonDraft>(
        context: context,
        isScrollControlled: true,
        useSafeArea: true,
        backgroundColor: Colors.transparent,
        builder: (BuildContext context) {
          return _PersonEditorBottomSheet(
            title: title,
            initial: initial,
            existingPeople: existingPeople,
            editingPersonId: editingPersonId,
          );
        },
      );
    }

    return showDialog<_PersonDraft>(
      context: context,
      builder: (BuildContext context) {
        return _PersonEditorDialog(
          title: title,
          initial: initial,
          existingPeople: existingPeople,
          editingPersonId: editingPersonId,
        );
      },
    );
  }

  Future<String?> _showQuickTextCaptureDialog(
    BuildContext context, {
    required String title,
    required String hintText,
  }) async {
    final TextEditingController controller = TextEditingController();
    final String? result = await showDialog<String>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: Text(title),
          content: TextField(
            controller: controller,
            minLines: 2,
            maxLines: 4,
            decoration: InputDecoration(hintText: hintText),
          ),
          actions: <Widget>[
            TextButton(
              onPressed: () => Navigator.of(context).pop(),
              child: const Text('Cancel'),
            ),
            FilledButton(
              onPressed: () {
                final String value = controller.text.trim();
                if (value.isEmpty) {
                  return;
                }
                Navigator.of(context).pop(value);
              },
              child: const Text('Save'),
            ),
          ],
        );
      },
    );
    controller.dispose();
    return result;
  }
}

class _EmptyPeopleView extends StatelessWidget {
  const _EmptyPeopleView({required this.onAdd});

  final VoidCallback onAdd;

  @override
  Widget build(BuildContext context) {
    return Center(
      child: FrostedCard(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            Text(
              'No people yet',
              style: Theme.of(context).textTheme.titleLarge,
            ),
            const SizedBox(height: 8),
            Text(
              'Add the first relationship profile to start tracking moments.',
              style: Theme.of(
                context,
              ).textTheme.bodyLarge?.copyWith(color: AppTheme.textSecondary),
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 12),
            FilledButton.icon(
              onPressed: onAdd,
              icon: const Icon(Icons.person_add_alt_1_rounded),
              label: const Text('Add Person'),
            ),
          ],
        ),
      ),
    );
  }
}

class _FilteredPeopleEmptyView extends StatelessWidget {
  const _FilteredPeopleEmptyView({required this.onClear});

  final VoidCallback onClear;

  @override
  Widget build(BuildContext context) {
    return Center(
      child: FrostedCard(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            const Icon(
              Icons.search_off_rounded,
              size: 34,
              color: AppTheme.textSecondary,
            ),
            const SizedBox(height: 10),
            Text(
              'No matching people',
              style: Theme.of(context).textTheme.titleLarge,
            ),
            const SizedBox(height: 6),
            Text(
              'Try another search, relationship filter, or clear the current filters.',
              style: Theme.of(
                context,
              ).textTheme.bodyLarge?.copyWith(color: AppTheme.textSecondary),
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 12),
            OutlinedButton.icon(
              onPressed: onClear,
              icon: const Icon(Icons.restart_alt_rounded),
              label: const Text('Clear Filters'),
            ),
          ],
        ),
      ),
    );
  }
}

class _PeopleListControls extends ConsumerWidget {
  const _PeopleListControls({
    required this.compact,
    required this.relationshipOptions,
  });

  final bool compact;
  final List<String> relationshipOptions;

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final String query = ref.watch(peopleSearchQueryProvider);
    final String? selectedRelationship = ref.watch(
      peopleRelationshipFilterProvider,
    );
    final PeopleSortOption sortOption = ref.watch(peopleSortOptionProvider);

    return FrostedCard(
      padding: EdgeInsets.all(compact ? 12 : 14),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Row(
            children: <Widget>[
              Expanded(
                child: TextFormField(
                  key: ValueKey<String>('people-search-$query'),
                  initialValue: query,
                  onChanged: (String value) {
                    ref.read(peopleSearchQueryProvider.notifier).set(value);
                  },
                  decoration: const InputDecoration(
                    hintText: 'Search name, tags, notes, location',
                    prefixIcon: Icon(Icons.search_rounded),
                    isDense: true,
                    border: OutlineInputBorder(),
                  ),
                ),
              ),
              const SizedBox(width: 8),
              PopupMenuButton<PeopleSortOption>(
                tooltip: 'Sort',
                onSelected: (PeopleSortOption value) {
                  ref.read(peopleSortOptionProvider.notifier).set(value);
                },
                itemBuilder: (BuildContext context) =>
                    <PopupMenuEntry<PeopleSortOption>>[
                      const PopupMenuItem<PeopleSortOption>(
                        value: PeopleSortOption.affinity,
                        child: Text('Sort by affinity'),
                      ),
                      const PopupMenuItem<PeopleSortOption>(
                        value: PeopleSortOption.nextMoment,
                        child: Text('Sort by next moment'),
                      ),
                      const PopupMenuItem<PeopleSortOption>(
                        value: PeopleSortOption.alphabetical,
                        child: Text('Sort A-Z'),
                      ),
                    ],
                child: Container(
                  padding: const EdgeInsets.symmetric(
                    horizontal: 10,
                    vertical: 10,
                  ),
                  decoration: BoxDecoration(
                    color: const Color(0xFFF3F8FB),
                    borderRadius: BorderRadius.circular(12),
                  ),
                  child: Row(
                    mainAxisSize: MainAxisSize.min,
                    children: <Widget>[
                      const Icon(Icons.sort_rounded, size: 18),
                      if (!compact) ...<Widget>[
                        const SizedBox(width: 6),
                        Text(switch (sortOption) {
                          PeopleSortOption.affinity => 'Affinity',
                          PeopleSortOption.nextMoment => 'Next',
                          PeopleSortOption.alphabetical => 'A-Z',
                        }),
                      ],
                    ],
                  ),
                ),
              ),
            ],
          ),
          const SizedBox(height: 10),
          SingleChildScrollView(
            scrollDirection: Axis.horizontal,
            child: Row(
              children: <Widget>[
                _FilterChipButton(
                  label: 'All',
                  selected: selectedRelationship == null,
                  onTap: () {
                    ref
                        .read(peopleRelationshipFilterProvider.notifier)
                        .set(null);
                  },
                ),
                ...relationshipOptions.map(
                  (String relationship) => Padding(
                    padding: const EdgeInsets.only(left: 8),
                    child: _FilterChipButton(
                      label: relationship,
                      selected:
                          selectedRelationship?.toLowerCase() ==
                          relationship.toLowerCase(),
                      onTap: () {
                        final PeopleRelationshipFilterNotifier controller = ref
                            .read(peopleRelationshipFilterProvider.notifier);
                        final bool isSelected =
                            selectedRelationship?.toLowerCase() ==
                            relationship.toLowerCase();
                        controller.set(isSelected ? null : relationship);
                      },
                    ),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}

class _FilterChipButton extends StatelessWidget {
  const _FilterChipButton({
    required this.label,
    required this.selected,
    required this.onTap,
  });

  final String label;
  final bool selected;
  final VoidCallback onTap;

  @override
  Widget build(BuildContext context) {
    return InkWell(
      onTap: onTap,
      borderRadius: BorderRadius.circular(99),
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
        decoration: BoxDecoration(
          color: selected ? const Color(0xFFEAF7FB) : const Color(0xFFF4F8FB),
          borderRadius: BorderRadius.circular(99),
          border: Border.all(
            color: selected
                ? const Color(0xFFB8E4EE)
                : Colors.white.withValues(alpha: 0.8),
          ),
        ),
        child: Text(
          label,
          style: Theme.of(context).textTheme.labelLarge?.copyWith(
            color: selected ? AppTheme.primary : AppTheme.textSecondary,
            fontWeight: selected ? FontWeight.w700 : FontWeight.w500,
          ),
        ),
      ),
    );
  }
}

class _PersonDetail extends ConsumerWidget {
  const _PersonDetail({
    required this.person,
    required this.data,
    required this.onEdit,
    required this.onDelete,
    required this.onQuickAction,
    this.compact = false,
  });

  final PersonProfile person;
  final LocalDataState data;
  final VoidCallback onEdit;
  final VoidCallback onDelete;
  final ValueChanged<_PersonQuickAction> onQuickAction;
  final bool compact;

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final List<RelationshipMoment> moments =
        data.moments
            .where((RelationshipMoment moment) => moment.personId == person.id)
            .toList(growable: false)
          ..sort(
            (RelationshipMoment a, RelationshipMoment b) =>
                b.at.compareTo(a.at),
          );
    final List<RelationshipIdea> ideas =
        data.ideas
            .where((RelationshipIdea idea) => idea.personId == person.id)
            .toList(growable: false)
          ..sort(
            (RelationshipIdea a, RelationshipIdea b) =>
                b.createdAt.compareTo(a.createdAt),
          );
    final List<ReminderRule> reminders =
        data.reminders
            .where((ReminderRule reminder) => reminder.personId == person.id)
            .toList(growable: false)
          ..sort(
            (ReminderRule a, ReminderRule b) => a.nextAt.compareTo(b.nextAt),
          );
    final List<SharedMessageEntry> sharedMessages =
        data.sharedMessages
            .where((SharedMessageEntry entry) => entry.profileId == person.id)
            .toList(growable: false)
          ..sort(
            (SharedMessageEntry a, SharedMessageEntry b) =>
                b.sharedAt.compareTo(a.sharedAt),
          );
    final List<SourceProfileLink> sourceLinks =
        data.sourceLinks
            .where((SourceProfileLink link) => link.profileId == person.id)
            .toList(growable: false)
          ..sort(
            (SourceProfileLink a, SourceProfileLink b) =>
                b.lastSeenAt.compareTo(a.lastSeenAt),
          );
    final List<PersonPreferenceSignal> preferenceSignals =
        data.preferenceSignals
            .where(
              (PersonPreferenceSignal signal) => signal.personId == person.id,
            )
            .toList(growable: false)
          ..sort(_peoplePreferenceSignalSort);
    final bool hasNotes = person.notes.trim().isNotEmpty;
    final String? location = person.location?.trim().isEmpty ?? true
        ? null
        : person.location!.trim();

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: <Widget>[
        _PersonWorkspaceHero(
          person: person,
          compact: compact,
          sourceLinks: sourceLinks,
          onEdit: onEdit,
          onDelete: onDelete,
          onQuickAction: onQuickAction,
        ),
        SizedBox(height: compact ? 12 : 14),
        Wrap(
          spacing: 10,
          runSpacing: 10,
          children: <Widget>[
            _PersonStatTile(
              label: 'Affinity',
              value: '${person.affinityScore}%',
              accent: const Color(0xFF1AB6C8),
              compact: compact,
            ),
            _PersonStatTile(
              label: 'Next moment',
              value: _dateTimeLabel(person.nextMoment),
              accent: const Color(0xFF2274E0),
              compact: compact,
            ),
            _PersonStatTile(
              label: 'Captures',
              value: '${moments.length}',
              accent: const Color(0xFF23A26D),
              compact: compact,
            ),
            _PersonStatTile(
              label: 'Ideas',
              value:
                  '${ideas.where((RelationshipIdea e) => !e.isArchived).length}',
              accent: const Color(0xFFF4A524),
              compact: compact,
            ),
          ],
        ),
        const SizedBox(height: 12),
        _PeopleInsightSectionCard(
          title: 'Profile context',
          icon: Icons.person_outline_rounded,
          children: <Widget>[
            Wrap(
              spacing: 8,
              runSpacing: 8,
              children: <Widget>[
                _InlineMetaPill(
                  icon: Icons.favorite_outline_rounded,
                  label: person.relationship,
                ),
                if (location != null)
                  _InlineMetaPill(
                    icon: Icons.location_on_outlined,
                    label: location,
                  ),
                if (sourceLinks.isNotEmpty)
                  _InlineMetaPill(
                    icon: Icons.link_rounded,
                    label:
                        '${sourceLinks.length} linked source${sourceLinks.length == 1 ? '' : 's'}',
                  ),
                ...person.tags.map(
                  (String tag) =>
                      _InlineMetaPill(icon: Icons.sell_outlined, label: tag),
                ),
              ],
            ),
            const SizedBox(height: 10),
            _PeopleInsightBodyBlock(
              text: hasNotes
                  ? person.notes.trim()
                  : 'Add notes about preferences, boundaries, and what matters so future follow-ups stay relevant.',
              muted: !hasNotes,
            ),
          ],
        ),
        const SizedBox(height: 12),
        _PeopleInsightSectionCard(
          title: 'Chat-derived preferences',
          icon: Icons.psychology_alt_outlined,
          children: preferenceSignals.isEmpty
              ? const <Widget>[
                  _PeopleSectionEmpty(
                    label:
                        'No inferred preferences yet. Share messages from chat apps to build context for this person.',
                  ),
                ]
              : preferenceSignals
                    .map(
                      (PersonPreferenceSignal signal) =>
                          _PeoplePreferenceSignalCard(
                            signal: signal,
                            compact: compact,
                            onWhy: () => _showPeoplePreferenceEvidence(
                              context,
                              signal: signal,
                              personName: person.name,
                            ),
                            onConfirm: () async {
                              await ref
                                  .read(localRepositoryProvider.notifier)
                                  .confirmPreferenceSignal(signal.id);
                            },
                            onDismiss: () async {
                              await ref
                                  .read(localRepositoryProvider.notifier)
                                  .dismissPreferenceSignal(signal.id);
                            },
                          ),
                    )
                    .toList(growable: false),
        ),
        const SizedBox(height: 12),
        _PeopleInsightSectionCard(
          title: 'Ideas',
          icon: Icons.lightbulb_outline_rounded,
          children: ideas.isEmpty
              ? const <Widget>[
                  _PeopleSectionEmpty(
                    label:
                        'No ideas yet. Use Quick add to capture gift or event ideas.',
                  ),
                ]
              : ideas
                    .take(compact ? 4 : 6)
                    .map(
                      (RelationshipIdea idea) => _PeopleInsightRow(
                        title: idea.title,
                        subtitle: idea.details.isEmpty
                            ? 'No details yet'
                            : idea.details,
                        meta:
                            '${idea.type.name.toUpperCase()} • ${_shortDateTimeLabel(idea.createdAt)}${idea.isArchived ? ' • ARCHIVED' : ''}',
                      ),
                    )
                    .toList(growable: false),
        ),
        const SizedBox(height: 12),
        _PeopleInsightSectionCard(
          title: 'Moments',
          icon: Icons.auto_awesome_rounded,
          children: moments.isEmpty
              ? const <Widget>[
                  _PeopleSectionEmpty(
                    label: 'No captures logged yet for this person.',
                  ),
                ]
              : moments
                    .take(compact ? 4 : 6)
                    .map(
                      (RelationshipMoment moment) => _PeopleInsightRow(
                        title: moment.title,
                        subtitle: moment.summary,
                        meta:
                            '${moment.type.toUpperCase()} • ${_shortDateTimeLabel(moment.at)}',
                      ),
                    )
                    .toList(growable: false),
        ),
        const SizedBox(height: 12),
        _PeopleInsightSectionCard(
          title: 'Reminders',
          icon: Icons.notifications_active_outlined,
          children: reminders.isEmpty
              ? const <Widget>[
                  _PeopleSectionEmpty(
                    label:
                        'No reminders yet. Add one to keep the relationship active.',
                  ),
                ]
              : reminders
                    .take(compact ? 4 : 6)
                    .map(
                      (ReminderRule reminder) => _PeopleInsightRow(
                        title: reminder.title,
                        subtitle: reminder.enabled ? 'Enabled' : 'Disabled',
                        meta:
                            '${reminder.cadence.name.toUpperCase()} • Next ${_shortDateTimeLabel(reminder.nextAt)}',
                      ),
                    )
                    .toList(growable: false),
        ),
        const SizedBox(height: 12),
        _PeopleInsightSectionCard(
          title: 'Shared message history',
          icon: Icons.chat_bubble_outline_rounded,
          children: sharedMessages.isEmpty
              ? const <Widget>[
                  _PeopleSectionEmpty(
                    label: 'No imported shared messages for this profile yet.',
                  ),
                ]
              : sharedMessages
                    .take(compact ? 3 : 5)
                    .map(
                      (SharedMessageEntry entry) => _PeopleInsightRow(
                        title:
                            entry.sourceDisplayName?.trim().isNotEmpty == true
                            ? entry.sourceDisplayName!.trim()
                            : 'Shared from ${entry.sourceApp}',
                        subtitle: entry.messageText.trim().isEmpty
                            ? 'Imported message content is empty'
                            : entry.messageText.trim(),
                        meta:
                            '${entry.resolvedAutomatically ? 'AUTO-LINKED' : 'MANUAL-LINK'} • ${_shortDateTimeLabel(entry.sharedAt)}',
                      ),
                    )
                    .toList(growable: false),
        ),
      ],
    );
  }
}

Future<void> _showPeoplePreferenceEvidence(
  BuildContext context, {
  required PersonPreferenceSignal signal,
  required String personName,
}) {
  return showModalBottomSheet<void>(
    context: context,
    useSafeArea: true,
    showDragHandle: true,
    builder: (BuildContext context) {
      return Padding(
        padding: const EdgeInsets.fromLTRB(16, 8, 16, 20),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Text(
              'Why this signal?',
              style: Theme.of(context).textTheme.titleLarge,
            ),
            const SizedBox(height: 6),
            Text(
              '${signal.label} • ${signal.category} • ${signal.polarity.name.toUpperCase()}',
              style: Theme.of(
                context,
              ).textTheme.bodyMedium?.copyWith(color: AppTheme.textSecondary),
            ),
            const SizedBox(height: 4),
            Text(
              'For $personName • confidence ${(signal.confidence * 100).round()}%',
              style: Theme.of(
                context,
              ).textTheme.bodySmall?.copyWith(color: AppTheme.textSecondary),
            ),
            const SizedBox(height: 12),
            if (signal.evidenceSnippets.isEmpty)
              const _PeopleSectionEmpty(
                label: 'No evidence snippets stored yet for this signal.',
              )
            else
              ...signal.evidenceSnippets.map(
                (String snippet) => _PeopleInsightRow(
                  title: 'Evidence',
                  subtitle: snippet,
                  meta: 'Source(s): ${signal.sourceApps.join(', ')}',
                ),
              ),
            const SizedBox(height: 8),
            Align(
              alignment: Alignment.centerRight,
              child: TextButton(
                onPressed: () => Navigator.of(context).pop(),
                child: const Text('Close'),
              ),
            ),
          ],
        ),
      );
    },
  );
}

int _peoplePreferenceSignalSort(
  PersonPreferenceSignal a,
  PersonPreferenceSignal b,
) {
  int rank(PreferenceSignalStatus status) => switch (status) {
    PreferenceSignalStatus.inferred => 0,
    PreferenceSignalStatus.confirmed => 1,
    PreferenceSignalStatus.dismissed => 2,
  };

  final int byStatus = rank(a.status).compareTo(rank(b.status));
  if (byStatus != 0) {
    return byStatus;
  }
  final int byConfidence = b.confidence.compareTo(a.confidence);
  if (byConfidence != 0) {
    return byConfidence;
  }
  return a.label.toLowerCase().compareTo(b.label.toLowerCase());
}

class _PeoplePreferenceSignalCard extends StatelessWidget {
  const _PeoplePreferenceSignalCard({
    required this.signal,
    required this.compact,
    required this.onConfirm,
    required this.onDismiss,
    required this.onWhy,
  });

  final PersonPreferenceSignal signal;
  final bool compact;
  final Future<void> Function() onConfirm;
  final Future<void> Function() onDismiss;
  final VoidCallback onWhy;

  @override
  Widget build(BuildContext context) {
    final Color tone = switch (signal.status) {
      PreferenceSignalStatus.confirmed => const Color(0xFF1D9C66),
      PreferenceSignalStatus.dismissed => const Color(0xFFA56A00),
      PreferenceSignalStatus.inferred => AppTheme.primary,
    };
    final IconData polarityIcon = switch (signal.polarity) {
      PreferenceSignalPolarity.like => Icons.thumb_up_alt_outlined,
      PreferenceSignalPolarity.dislike => Icons.thumb_down_alt_outlined,
      PreferenceSignalPolarity.neutral => Icons.tune_rounded,
    };

    return Padding(
      padding: const EdgeInsets.only(bottom: 10),
      child: Container(
        width: double.infinity,
        padding: const EdgeInsets.all(12),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(12),
          border: Border.all(color: const Color(0xFFEAF1F4)),
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Wrap(
              spacing: 8,
              runSpacing: 8,
              crossAxisAlignment: WrapCrossAlignment.center,
              children: <Widget>[
                Icon(polarityIcon, size: 16, color: tone),
                Text(
                  signal.label,
                  style: Theme.of(context).textTheme.titleSmall,
                ),
                _PeoplePreferenceBadge(label: signal.status.name, color: tone),
                _PeoplePreferenceBadge(
                  label: '${(signal.confidence * 100).round()}%',
                  color: AppTheme.textSecondary,
                  filled: false,
                ),
              ],
            ),
            const SizedBox(height: 5),
            Text(
              '${signal.category.toUpperCase()} • seen ${signal.occurrenceCount}x',
              style: Theme.of(
                context,
              ).textTheme.labelSmall?.copyWith(color: AppTheme.textSecondary),
            ),
            const SizedBox(height: 8),
            Wrap(
              spacing: 8,
              runSpacing: 8,
              children: <Widget>[
                OutlinedButton(onPressed: onWhy, child: const Text('Why?')),
                if (signal.status != PreferenceSignalStatus.confirmed)
                  FilledButton.tonal(
                    onPressed: () async => onConfirm(),
                    child: const Text('Confirm'),
                  ),
                if (signal.status != PreferenceSignalStatus.dismissed)
                  TextButton(
                    onPressed: () async => onDismiss(),
                    child: const Text('Dismiss'),
                  ),
              ],
            ),
            if (!compact && signal.sourceApps.isNotEmpty) ...<Widget>[
              const SizedBox(height: 4),
              Text(
                'Sources: ${signal.sourceApps.join(', ')}',
                style: Theme.of(
                  context,
                ).textTheme.bodySmall?.copyWith(color: AppTheme.textSecondary),
              ),
            ],
          ],
        ),
      ),
    );
  }
}

class _PeoplePreferenceBadge extends StatelessWidget {
  const _PeoplePreferenceBadge({
    required this.label,
    required this.color,
    this.filled = true,
  });

  final String label;
  final Color color;
  final bool filled;

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      decoration: BoxDecoration(
        color: filled ? color.withValues(alpha: 0.12) : Colors.transparent,
        borderRadius: BorderRadius.circular(99),
        border: Border.all(color: color.withValues(alpha: filled ? 0.2 : 0.35)),
      ),
      child: Text(
        label.toUpperCase(),
        style: Theme.of(context).textTheme.labelSmall?.copyWith(color: color),
      ),
    );
  }
}

class _PersonWorkspaceHero extends StatelessWidget {
  const _PersonWorkspaceHero({
    required this.person,
    required this.compact,
    required this.sourceLinks,
    required this.onEdit,
    required this.onDelete,
    required this.onQuickAction,
  });

  final PersonProfile person;
  final bool compact;
  final List<SourceProfileLink> sourceLinks;
  final VoidCallback onEdit;
  final VoidCallback onDelete;
  final ValueChanged<_PersonQuickAction> onQuickAction;

  @override
  Widget build(BuildContext context) {
    final Widget actions = Wrap(
      spacing: 8,
      runSpacing: 8,
      alignment: WrapAlignment.end,
      children: <Widget>[
        FilledButton.icon(
          onPressed: () => onQuickAction(_PersonQuickAction.capture),
          icon: const Icon(Icons.add_comment_outlined, size: 18),
          label: const Text('Capture'),
        ),
        OutlinedButton.icon(
          onPressed: () => onQuickAction(_PersonQuickAction.idea),
          icon: const Icon(Icons.lightbulb_outline_rounded, size: 18),
          label: const Text('Idea'),
        ),
        PopupMenuButton<_PersonQuickAction>(
          tooltip: 'More quick add actions',
          onSelected: onQuickAction,
          itemBuilder: (BuildContext context) =>
              const <PopupMenuEntry<_PersonQuickAction>>[
                PopupMenuItem<_PersonQuickAction>(
                  value: _PersonQuickAction.capture,
                  child: Text('Add Capture'),
                ),
                PopupMenuItem<_PersonQuickAction>(
                  value: _PersonQuickAction.note,
                  child: Text('Add Note'),
                ),
                PopupMenuItem<_PersonQuickAction>(
                  value: _PersonQuickAction.idea,
                  child: Text('Add Idea'),
                ),
                PopupMenuItem<_PersonQuickAction>(
                  value: _PersonQuickAction.reminder,
                  child: Text('Add Reminder'),
                ),
              ],
          child: const _HeroIconButton(
            icon: Icons.add_circle_outline_rounded,
            tooltip: 'Quick add',
          ),
        ),
        IconButton(
          onPressed: onEdit,
          icon: const Icon(Icons.edit_rounded),
          tooltip: 'Edit person',
        ),
        IconButton(
          onPressed: onDelete,
          icon: const Icon(Icons.delete_outline_rounded),
          tooltip: 'Delete person',
        ),
      ],
    );

    return Container(
      width: double.infinity,
      padding: EdgeInsets.all(compact ? 14 : 16),
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(18),
        gradient: const LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: <Color>[Color(0xFFF7FBFD), Color(0xFFEAF4FA)],
        ),
        border: Border.all(color: Colors.white.withValues(alpha: 0.9)),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          if (compact) ...<Widget>[
            Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                _AvatarSeed(name: person.name, size: 58),
                const SizedBox(width: 12),
                Expanded(child: _HeroIdentity(person: person)),
              ],
            ),
            const SizedBox(height: 12),
            actions,
          ] else ...<Widget>[
            Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                _AvatarSeed(name: person.name, size: 64),
                const SizedBox(width: 14),
                Expanded(child: _HeroIdentity(person: person)),
                const SizedBox(width: 10),
                Flexible(
                  child: Align(alignment: Alignment.topRight, child: actions),
                ),
              ],
            ),
          ],
          const SizedBox(height: 10),
          Wrap(
            spacing: 8,
            runSpacing: 8,
            children: <Widget>[
              _InlineMetaPill(
                icon: Icons.schedule_rounded,
                label: 'Next ${_dateTimeLabel(person.nextMoment)}',
              ),
              if (sourceLinks.isNotEmpty)
                _InlineMetaPill(
                  icon: Icons.link_rounded,
                  label:
                      'Last linked ${_shortDateTimeLabel(sourceLinks.first.lastSeenAt)}',
                ),
            ],
          ),
        ],
      ),
    );
  }
}

class _HeroIdentity extends StatelessWidget {
  const _HeroIdentity({required this.person});

  final PersonProfile person;

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: <Widget>[
        Text(
          person.name,
          style: Theme.of(context).textTheme.titleLarge,
          maxLines: 1,
          overflow: TextOverflow.ellipsis,
        ),
        const SizedBox(height: 4),
        Text(
          person.relationship,
          style: Theme.of(
            context,
          ).textTheme.bodyLarge?.copyWith(color: AppTheme.textSecondary),
          maxLines: 1,
          overflow: TextOverflow.ellipsis,
        ),
      ],
    );
  }
}

class _HeroIconButton extends StatelessWidget {
  const _HeroIconButton({required this.icon, required this.tooltip});

  final IconData icon;
  final String tooltip;

  @override
  Widget build(BuildContext context) {
    return Tooltip(
      message: tooltip,
      child: Container(
        width: 40,
        height: 40,
        decoration: BoxDecoration(
          color: const Color(0xFFF2F7FA),
          borderRadius: BorderRadius.circular(12),
          border: Border.all(color: Colors.white),
        ),
        child: Icon(icon, color: AppTheme.primary, size: 20),
      ),
    );
  }
}

class _PersonStatTile extends StatelessWidget {
  const _PersonStatTile({
    required this.label,
    required this.value,
    required this.accent,
    required this.compact,
  });

  final String label;
  final String value;
  final Color accent;
  final bool compact;

  @override
  Widget build(BuildContext context) {
    final double width = compact ? 154 : 172;
    return Container(
      width: width,
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white.withValues(alpha: 0.66),
        borderRadius: BorderRadius.circular(14),
        border: Border.all(color: accent.withValues(alpha: 0.12)),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Text(
            label,
            style: Theme.of(
              context,
            ).textTheme.labelMedium?.copyWith(color: AppTheme.textSecondary),
          ),
          const SizedBox(height: 6),
          Text(
            value,
            maxLines: 2,
            overflow: TextOverflow.ellipsis,
            style: Theme.of(context).textTheme.titleMedium?.copyWith(
              color: accent,
              fontWeight: FontWeight.w700,
            ),
          ),
        ],
      ),
    );
  }
}

class _PeopleInsightSectionCard extends StatelessWidget {
  const _PeopleInsightSectionCard({
    required this.title,
    required this.icon,
    required this.children,
  });

  final String title;
  final IconData icon;
  final List<Widget> children;

  @override
  Widget build(BuildContext context) {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: const Color(0xFFF8FBFD),
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: Colors.white.withValues(alpha: 0.9)),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Row(
            children: <Widget>[
              Icon(icon, size: 18, color: AppTheme.primary),
              const SizedBox(width: 8),
              Expanded(
                child: Text(
                  title,
                  style: Theme.of(context).textTheme.titleMedium,
                ),
              ),
            ],
          ),
          const SizedBox(height: 10),
          ...children,
        ],
      ),
    );
  }
}

class _PeopleInsightRow extends StatelessWidget {
  const _PeopleInsightRow({
    required this.title,
    required this.subtitle,
    required this.meta,
  });

  final String title;
  final String subtitle;
  final String meta;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 10),
      child: Container(
        width: double.infinity,
        padding: const EdgeInsets.all(12),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(12),
          border: Border.all(color: const Color(0xFFEAF1F4)),
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Text(
              title,
              style: Theme.of(context).textTheme.titleSmall,
              maxLines: 1,
              overflow: TextOverflow.ellipsis,
            ),
            const SizedBox(height: 4),
            Text(
              subtitle,
              maxLines: 3,
              overflow: TextOverflow.ellipsis,
              style: Theme.of(
                context,
              ).textTheme.bodyMedium?.copyWith(color: AppTheme.textSecondary),
            ),
            const SizedBox(height: 6),
            Text(
              meta,
              style: Theme.of(
                context,
              ).textTheme.labelSmall?.copyWith(color: AppTheme.textSecondary),
            ),
          ],
        ),
      ),
    );
  }
}

class _PeopleInsightBodyBlock extends StatelessWidget {
  const _PeopleInsightBodyBlock({required this.text, required this.muted});

  final String text;
  final bool muted;

  @override
  Widget build(BuildContext context) {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: const Color(0xFFEAF1F4)),
      ),
      child: Text(
        text,
        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
          color: muted ? AppTheme.textSecondary : null,
          height: 1.35,
        ),
      ),
    );
  }
}

class _PeopleSectionEmpty extends StatelessWidget {
  const _PeopleSectionEmpty({required this.label});

  final String label;

  @override
  Widget build(BuildContext context) {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: const Color(0xFFEAF1F4)),
      ),
      child: Text(
        label,
        style: Theme.of(
          context,
        ).textTheme.bodyMedium?.copyWith(color: AppTheme.textSecondary),
      ),
    );
  }
}

class _PeopleHeader extends StatelessWidget {
  const _PeopleHeader({
    required this.onAdd,
    required this.onMerge,
    required this.compact,
  });

  final VoidCallback onAdd;
  final VoidCallback onMerge;
  final bool compact;

  @override
  Widget build(BuildContext context) {
    final TextTheme textTheme = Theme.of(context).textTheme;
    if (compact) {
      return Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Text('People', style: textTheme.headlineMedium),
          const SizedBox(height: 6),
          Text(
            'Track what matters to each relationship and follow through.',
            style: textTheme.bodyLarge?.copyWith(color: AppTheme.textSecondary),
            maxLines: 2,
            overflow: TextOverflow.ellipsis,
          ),
          const SizedBox(height: 12),
          FilledButton.icon(
            onPressed: onAdd,
            icon: const Icon(Icons.person_add_alt_1_rounded),
            label: const Text('Add person'),
          ),
          const SizedBox(height: 8),
          OutlinedButton.icon(
            onPressed: onMerge,
            icon: const Icon(Icons.merge_type_rounded),
            label: const Text('Merge duplicates'),
          ),
        ],
      );
    }

    return Row(
      children: <Widget>[
        Expanded(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: <Widget>[
              Text('People', style: textTheme.headlineMedium),
              const SizedBox(height: 6),
              Text(
                'Track what matters to each relationship and follow through.',
                style: textTheme.bodyLarge?.copyWith(
                  color: AppTheme.textSecondary,
                ),
              ),
            ],
          ),
        ),
        FilledButton.icon(
          onPressed: onAdd,
          icon: const Icon(Icons.person_add_alt_1_rounded),
          label: const Text('Add'),
        ),
        const SizedBox(width: 8),
        OutlinedButton.icon(
          onPressed: onMerge,
          icon: const Icon(Icons.merge_type_rounded),
          label: const Text('Merge'),
        ),
      ],
    );
  }
}

class _PersonListItem extends StatelessWidget {
  const _PersonListItem({
    required this.person,
    required this.selectedId,
    required this.compact,
    required this.onSelect,
  });

  final PersonProfile person;
  final String selectedId;
  final bool compact;
  final VoidCallback onSelect;

  @override
  Widget build(BuildContext context) {
    final bool isSelected = person.id == selectedId;
    return InkWell(
      onTap: onSelect,
      borderRadius: BorderRadius.circular(20),
      child: FrostedCard(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Row(
              children: <Widget>[
                _AvatarSeed(name: person.name),
                const SizedBox(width: 14),
                Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: <Widget>[
                      Text(
                        person.name,
                        style: Theme.of(context).textTheme.titleMedium,
                        maxLines: 1,
                        overflow: TextOverflow.ellipsis,
                      ),
                      const SizedBox(height: 4),
                      Text(
                        person.relationship,
                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                          color: AppTheme.textSecondary,
                        ),
                        maxLines: 1,
                        overflow: TextOverflow.ellipsis,
                      ),
                    ],
                  ),
                ),
                const SizedBox(width: 8),
                _ScorePill(score: person.affinityScore),
                if (isSelected)
                  const Padding(
                    padding: EdgeInsets.only(left: 10),
                    child: Icon(Icons.check_circle, color: Color(0xFF1AB6C8)),
                  ),
              ],
            ),
            const SizedBox(height: 10),
            Wrap(
              spacing: 8,
              runSpacing: 8,
              children: <Widget>[
                _InlineMetaPill(
                  icon: Icons.schedule_rounded,
                  label: _dateTimeLabel(person.nextMoment),
                ),
                if ((person.location ?? '').trim().isNotEmpty)
                  _InlineMetaPill(
                    icon: Icons.location_on_outlined,
                    label: person.location!.trim(),
                  ),
                ...person.tags
                    .take(compact ? 2 : 3)
                    .map(
                      (String tag) => _InlineMetaPill(
                        icon: Icons.sell_outlined,
                        label: tag,
                      ),
                    ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}

class _PersonEditorDialog extends StatelessWidget {
  const _PersonEditorDialog({
    required this.title,
    required this.existingPeople,
    this.initial,
    this.editingPersonId,
  });

  final String title;
  final List<PersonProfile> existingPeople;
  final _PersonDraft? initial;
  final String? editingPersonId;

  @override
  Widget build(BuildContext context) {
    return Dialog(
      backgroundColor: Colors.transparent,
      insetPadding: const EdgeInsets.symmetric(horizontal: 28, vertical: 24),
      child: ConstrainedBox(
        constraints: const BoxConstraints(maxWidth: 720),
        child: _PersonEditorPanel(
          title: title,
          initial: initial,
          existingPeople: existingPeople,
          editingPersonId: editingPersonId,
          compact: false,
          sheetStyle: false,
        ),
      ),
    );
  }
}

class _PersonEditorBottomSheet extends StatelessWidget {
  const _PersonEditorBottomSheet({
    required this.title,
    required this.existingPeople,
    this.initial,
    this.editingPersonId,
  });

  final String title;
  final List<PersonProfile> existingPeople;
  final _PersonDraft? initial;
  final String? editingPersonId;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.only(
        left: 8,
        right: 8,
        bottom: MediaQuery.viewInsetsOf(context).bottom + 8,
      ),
      child: _PersonEditorPanel(
        title: title,
        initial: initial,
        existingPeople: existingPeople,
        editingPersonId: editingPersonId,
        compact: true,
        sheetStyle: true,
      ),
    );
  }
}

class _PersonEditorPanel extends StatefulWidget {
  const _PersonEditorPanel({
    required this.title,
    required this.compact,
    required this.sheetStyle,
    required this.existingPeople,
    this.initial,
    this.editingPersonId,
  });

  final String title;
  final bool compact;
  final bool sheetStyle;
  final List<PersonProfile> existingPeople;
  final _PersonDraft? initial;
  final String? editingPersonId;

  @override
  State<_PersonEditorPanel> createState() => _PersonEditorPanelState();
}

class _PersonEditorPanelState extends State<_PersonEditorPanel> {
  late final TextEditingController _nameController;
  late final TextEditingController _relationshipController;
  late final TextEditingController _locationController;
  late final TextEditingController _tagsController;
  late final TextEditingController _notesController;
  bool _attemptedSubmit = false;

  @override
  void initState() {
    super.initState();
    _nameController = TextEditingController(text: widget.initial?.name ?? '')
      ..addListener(_handlePreviewChanged);
    _relationshipController = TextEditingController(
      text: widget.initial?.relationship ?? '',
    )..addListener(_handlePreviewChanged);
    _locationController = TextEditingController(
      text: widget.initial?.location ?? '',
    )..addListener(_handlePreviewChanged);
    _tagsController = TextEditingController(
      text: widget.initial?.tags.join(', ') ?? '',
    )..addListener(_handlePreviewChanged);
    _notesController = TextEditingController(text: widget.initial?.notes ?? '');
  }

  @override
  void dispose() {
    _nameController
      ..removeListener(_handlePreviewChanged)
      ..dispose();
    _relationshipController
      ..removeListener(_handlePreviewChanged)
      ..dispose();
    _locationController
      ..removeListener(_handlePreviewChanged)
      ..dispose();
    _tagsController
      ..removeListener(_handlePreviewChanged)
      ..dispose();
    _notesController.dispose();
    super.dispose();
  }

  void _handlePreviewChanged() {
    if (mounted) {
      setState(() {});
    }
  }

  @override
  Widget build(BuildContext context) {
    final String name = _nameController.text.trim();
    final String relationship = _relationshipController.text.trim();
    final bool nameMissing = _attemptedSubmit && name.isEmpty;
    final bool relationshipMissing = _attemptedSubmit && relationship.isEmpty;
    final String? location = _locationController.text.trim().isEmpty
        ? null
        : _locationController.text.trim();
    final List<String> tags = _tagsController.text
        .split(',')
        .map((String tag) => tag.trim())
        .where((String tag) => tag.isNotEmpty)
        .toList(growable: false);
    final List<PersonProfile> duplicateMatches = _findDuplicateNameMatches(
      name: name,
      people: widget.existingPeople,
      excludePersonId: widget.editingPersonId,
    );
    final bool hasDuplicateWarning = duplicateMatches.isNotEmpty;

    final BorderRadius radius = BorderRadius.circular(widget.compact ? 24 : 22);
    final double maxHeight = widget.compact ? 720 : 760;

    return Material(
      color: Colors.transparent,
      child: Container(
        constraints: BoxConstraints(
          maxHeight: maxHeight,
          minHeight: widget.compact ? 360 : 420,
        ),
        decoration: BoxDecoration(
          borderRadius: radius,
          gradient: const LinearGradient(
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
            colors: <Color>[Color(0xFFF7FBFD), Color(0xFFEAF3F9)],
          ),
          border: Border.all(color: Colors.white.withValues(alpha: 0.95)),
          boxShadow: <BoxShadow>[
            BoxShadow(
              color: Colors.black.withValues(alpha: 0.08),
              blurRadius: 26,
              offset: const Offset(0, 14),
            ),
          ],
        ),
        child: ClipRRect(
          borderRadius: radius,
          child: Column(
            children: <Widget>[
              if (widget.sheetStyle)
                Padding(
                  padding: const EdgeInsets.only(top: 8),
                  child: Container(
                    width: 42,
                    height: 4,
                    decoration: BoxDecoration(
                      color: const Color(0xFFCCD6DD),
                      borderRadius: BorderRadius.circular(99),
                    ),
                  ),
                ),
              Expanded(
                child: SingleChildScrollView(
                  padding: EdgeInsets.fromLTRB(
                    widget.compact ? 14 : 18,
                    widget.compact ? 10 : 16,
                    widget.compact ? 14 : 18,
                    12,
                  ),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: <Widget>[
                      _PersonEditorHero(
                        title: widget.title,
                        compact: widget.compact,
                        previewName: name,
                        previewRelationship: relationship,
                        previewLocation: location,
                        previewTags: tags,
                      ),
                      if (hasDuplicateWarning) ...<Widget>[
                        const SizedBox(height: 10),
                        _PersonEditorWarningBanner(matches: duplicateMatches),
                      ],
                      const SizedBox(height: 12),
                      if (widget.compact)
                        Column(
                          children: <Widget>[
                            _PersonEditorSectionCard(
                              title: 'Identity',
                              icon: Icons.person_outline_rounded,
                              child: Column(
                                children: <Widget>[
                                  TextField(
                                    controller: _nameController,
                                    autofocus: true,
                                    decoration: InputDecoration(
                                      labelText: 'Name',
                                      errorText: nameMissing
                                          ? 'Name is required'
                                          : null,
                                    ),
                                  ),
                                  const SizedBox(height: 10),
                                  TextField(
                                    controller: _relationshipController,
                                    decoration: InputDecoration(
                                      labelText: 'Relationship',
                                      errorText: relationshipMissing
                                          ? 'Relationship is required'
                                          : null,
                                    ),
                                  ),
                                  const SizedBox(height: 10),
                                  TextField(
                                    controller: _locationController,
                                    decoration: const InputDecoration(
                                      labelText: 'Location (optional)',
                                    ),
                                  ),
                                ],
                              ),
                            ),
                            const SizedBox(height: 10),
                            _PersonEditorSectionCard(
                              title: 'Context',
                              icon: Icons.auto_awesome_rounded,
                              child: Column(
                                children: <Widget>[
                                  TextField(
                                    controller: _tagsController,
                                    decoration: const InputDecoration(
                                      labelText: 'Tags (comma separated)',
                                    ),
                                  ),
                                  const SizedBox(height: 10),
                                  TextField(
                                    controller: _notesController,
                                    minLines: 3,
                                    maxLines: 5,
                                    decoration: const InputDecoration(
                                      labelText: 'Notes',
                                      hintText:
                                          'Preferences, boundaries, gift clues, recurring themes...',
                                    ),
                                  ),
                                ],
                              ),
                            ),
                          ],
                        )
                      else
                        Row(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: <Widget>[
                            Expanded(
                              child: _PersonEditorSectionCard(
                                title: 'Identity',
                                icon: Icons.person_outline_rounded,
                                child: Column(
                                  children: <Widget>[
                                    TextField(
                                      controller: _nameController,
                                      autofocus: true,
                                      decoration: InputDecoration(
                                        labelText: 'Name',
                                        errorText: nameMissing
                                            ? 'Name is required'
                                            : null,
                                      ),
                                    ),
                                    const SizedBox(height: 10),
                                    TextField(
                                      controller: _relationshipController,
                                      decoration: InputDecoration(
                                        labelText: 'Relationship',
                                        errorText: relationshipMissing
                                            ? 'Relationship is required'
                                            : null,
                                      ),
                                    ),
                                    const SizedBox(height: 10),
                                    TextField(
                                      controller: _locationController,
                                      decoration: const InputDecoration(
                                        labelText: 'Location (optional)',
                                      ),
                                    ),
                                  ],
                                ),
                              ),
                            ),
                            const SizedBox(width: 12),
                            Expanded(
                              child: _PersonEditorSectionCard(
                                title: 'Context',
                                icon: Icons.auto_awesome_rounded,
                                child: Column(
                                  children: <Widget>[
                                    TextField(
                                      controller: _tagsController,
                                      decoration: const InputDecoration(
                                        labelText: 'Tags (comma separated)',
                                      ),
                                    ),
                                    const SizedBox(height: 10),
                                    TextField(
                                      controller: _notesController,
                                      minLines: 5,
                                      maxLines: 8,
                                      decoration: const InputDecoration(
                                        labelText: 'Notes',
                                        hintText:
                                            'Preferences, boundaries, gift clues, recurring themes...',
                                      ),
                                    ),
                                  ],
                                ),
                              ),
                            ),
                          ],
                        ),
                    ],
                  ),
                ),
              ),
              Container(
                padding: EdgeInsets.fromLTRB(
                  widget.compact ? 14 : 18,
                  10,
                  widget.compact ? 14 : 18,
                  widget.compact ? 14 : 16,
                ),
                decoration: BoxDecoration(
                  color: Colors.white.withValues(alpha: 0.75),
                  border: Border(
                    top: BorderSide(color: Colors.white.withValues(alpha: 0.9)),
                  ),
                ),
                child: Row(
                  children: <Widget>[
                    Expanded(
                      child: Text(
                        'Required: name and relationship',
                        style: Theme.of(context).textTheme.bodySmall?.copyWith(
                          color: AppTheme.textSecondary,
                        ),
                      ),
                    ),
                    const SizedBox(width: 8),
                    TextButton(
                      onPressed: () => Navigator.of(context).pop(),
                      child: const Text('Cancel'),
                    ),
                    const SizedBox(width: 8),
                    FilledButton(
                      onPressed: () {
                        final String submittedName = _nameController.text
                            .trim();
                        final String submittedRelationship =
                            _relationshipController.text.trim();
                        if (submittedName.isEmpty ||
                            submittedRelationship.isEmpty) {
                          setState(() {
                            _attemptedSubmit = true;
                          });
                          return;
                        }

                        final _PersonDraft draft = _PersonDraft(
                          name: submittedName,
                          relationship: submittedRelationship,
                          location: _locationController.text.trim().isEmpty
                              ? null
                              : _locationController.text.trim(),
                          notes: _notesController.text.trim(),
                          tags: _tagsController.text
                              .split(',')
                              .map((String tag) => tag.trim())
                              .where((String tag) => tag.isNotEmpty)
                              .toList(growable: false),
                        );
                        Navigator.of(context).pop(draft);
                      },
                      child: const Text('Save'),
                    ),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class _PersonEditorHero extends StatelessWidget {
  const _PersonEditorHero({
    required this.title,
    required this.compact,
    required this.previewName,
    required this.previewRelationship,
    required this.previewLocation,
    required this.previewTags,
  });

  final String title;
  final bool compact;
  final String previewName;
  final String previewRelationship;
  final String? previewLocation;
  final List<String> previewTags;

  @override
  Widget build(BuildContext context) {
    final String displayName = previewName.isEmpty ? 'New person' : previewName;
    final String displayRelationship = previewRelationship.isEmpty
        ? 'Relationship type'
        : previewRelationship;

    return Container(
      width: double.infinity,
      padding: EdgeInsets.all(compact ? 14 : 16),
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(16),
        color: Colors.white.withValues(alpha: 0.72),
        border: Border.all(color: Colors.white),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Row(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: <Widget>[
              _AvatarSeed(name: displayName, size: compact ? 50 : 56),
              const SizedBox(width: 12),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Text(title, style: Theme.of(context).textTheme.titleLarge),
                    const SizedBox(height: 4),
                    Text(
                      'Shape the profile first, then use quick-add from the People workspace.',
                      style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                        color: AppTheme.textSecondary,
                      ),
                    ),
                  ],
                ),
              ),
            ],
          ),
          const SizedBox(height: 12),
          Wrap(
            spacing: 8,
            runSpacing: 8,
            children: <Widget>[
              _InlineMetaPill(
                icon: Icons.person_outline_rounded,
                label: displayName,
              ),
              _InlineMetaPill(
                icon: Icons.favorite_outline_rounded,
                label: displayRelationship,
              ),
              if (previewLocation != null)
                _InlineMetaPill(
                  icon: Icons.location_on_outlined,
                  label: previewLocation!,
                ),
              ...previewTags
                  .take(compact ? 2 : 4)
                  .map(
                    (String tag) =>
                        _InlineMetaPill(icon: Icons.sell_outlined, label: tag),
                  ),
            ],
          ),
        ],
      ),
    );
  }
}

class _PersonEditorSectionCard extends StatelessWidget {
  const _PersonEditorSectionCard({
    required this.title,
    required this.icon,
    required this.child,
  });

  final String title;
  final IconData icon;
  final Widget child;

  @override
  Widget build(BuildContext context) {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.white.withValues(alpha: 0.78),
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: Colors.white),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Row(
            children: <Widget>[
              Icon(icon, size: 18, color: AppTheme.primary),
              const SizedBox(width: 8),
              Expanded(
                child: Text(
                  title,
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: Theme.of(context).textTheme.titleMedium,
                ),
              ),
            ],
          ),
          const SizedBox(height: 10),
          child,
        ],
      ),
    );
  }
}

class _PersonEditorWarningBanner extends StatelessWidget {
  const _PersonEditorWarningBanner({required this.matches});

  final List<PersonProfile> matches;

  @override
  Widget build(BuildContext context) {
    final String names = matches
        .take(2)
        .map(
          (PersonProfile person) => '${person.name} (${person.relationship})',
        )
        .join(', ');
    final int extraCount = matches.length - 2;
    final String suffix = extraCount > 0 ? ' +$extraCount more' : '';

    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: const Color(0xFFFFF7E8),
        borderRadius: BorderRadius.circular(14),
        border: Border.all(color: const Color(0xFFFFE2A8)),
      ),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          const Padding(
            padding: EdgeInsets.only(top: 1),
            child: Icon(
              Icons.warning_amber_rounded,
              size: 18,
              color: Color(0xFFA56A00),
            ),
          ),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              'Possible duplicate profile name detected. Existing: $names$suffix. You can still save, then merge duplicates from People.',
              style: Theme.of(
                context,
              ).textTheme.bodyMedium?.copyWith(color: const Color(0xFF6F5200)),
            ),
          ),
        ],
      ),
    );
  }
}

class _PersonDraft {
  const _PersonDraft({
    required this.name,
    required this.relationship,
    required this.notes,
    required this.tags,
    this.location,
  });

  final String name;
  final String relationship;
  final String notes;
  final List<String> tags;
  final String? location;
}

List<PersonProfile> _findDuplicateNameMatches({
  required String name,
  required List<PersonProfile> people,
  String? excludePersonId,
}) {
  final String normalized = _normalizePersonNameKey(name);
  if (normalized.isEmpty) {
    return const <PersonProfile>[];
  }

  return people
      .where((PersonProfile person) {
        if (excludePersonId != null && person.id == excludePersonId) {
          return false;
        }
        return _normalizePersonNameKey(person.name) == normalized;
      })
      .toList(growable: false);
}

String _normalizePersonNameKey(String value) {
  return value
      .trim()
      .toLowerCase()
      .replaceAll(RegExp(r'[^a-z0-9]+'), ' ')
      .replaceAll(RegExp(r'\s+'), ' ');
}

class _MergePeopleDraft {
  const _MergePeopleDraft({
    required this.sourcePersonId,
    required this.targetPersonId,
  });

  final String sourcePersonId;
  final String targetPersonId;
}

class _MergePeopleDialog extends StatefulWidget {
  const _MergePeopleDialog({required this.people});

  final List<PersonProfile> people;

  @override
  State<_MergePeopleDialog> createState() => _MergePeopleDialogState();
}

class _MergePeopleDialogState extends State<_MergePeopleDialog> {
  late String _sourcePersonId;
  late String _targetPersonId;

  @override
  void initState() {
    super.initState();
    _targetPersonId = widget.people.first.id;
    _sourcePersonId = widget.people.length > 1
        ? widget.people[1].id
        : widget.people.first.id;
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('Merge Duplicate Profiles'),
      content: ConstrainedBox(
        constraints: const BoxConstraints(maxWidth: 420),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            Text(
              'Move captures, ideas, reminders, and share links from source into target profile.',
              style: Theme.of(
                context,
              ).textTheme.bodyMedium?.copyWith(color: AppTheme.textSecondary),
            ),
            const SizedBox(height: 12),
            DropdownButtonFormField<String>(
              key: ValueKey<String>('target-$_targetPersonId'),
              initialValue: _targetPersonId,
              decoration: const InputDecoration(
                labelText: 'Keep target profile',
              ),
              items: widget.people
                  .map(
                    (PersonProfile person) => DropdownMenuItem<String>(
                      value: person.id,
                      child: Text('${person.name} · ${person.relationship}'),
                    ),
                  )
                  .toList(growable: false),
              onChanged: (String? value) {
                if (value == null) {
                  return;
                }
                setState(() {
                  _targetPersonId = value;
                  if (_targetPersonId == _sourcePersonId) {
                    _sourcePersonId = widget.people
                        .firstWhere(
                          (PersonProfile person) =>
                              person.id != _targetPersonId,
                          orElse: () => widget.people.first,
                        )
                        .id;
                  }
                });
              },
            ),
            const SizedBox(height: 10),
            DropdownButtonFormField<String>(
              key: ValueKey<String>('source-$_targetPersonId-$_sourcePersonId'),
              initialValue: _sourcePersonId,
              decoration: const InputDecoration(
                labelText: 'Merge and remove source profile',
              ),
              items: widget.people
                  .where((PersonProfile person) => person.id != _targetPersonId)
                  .map(
                    (PersonProfile person) => DropdownMenuItem<String>(
                      value: person.id,
                      child: Text('${person.name} · ${person.relationship}'),
                    ),
                  )
                  .toList(growable: false),
              onChanged: (String? value) {
                if (value == null) {
                  return;
                }
                setState(() {
                  _sourcePersonId = value;
                });
              },
            ),
          ],
        ),
      ),
      actions: <Widget>[
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: const Text('Cancel'),
        ),
        FilledButton(
          onPressed: () {
            if (_sourcePersonId == _targetPersonId) {
              return;
            }
            Navigator.of(context).pop(
              _MergePeopleDraft(
                sourcePersonId: _sourcePersonId,
                targetPersonId: _targetPersonId,
              ),
            );
          },
          child: const Text('Merge'),
        ),
      ],
    );
  }
}

class _QuickIdeaDraft {
  const _QuickIdeaDraft({
    required this.type,
    required this.title,
    required this.details,
  });

  final IdeaType type;
  final String title;
  final String details;
}

class _QuickIdeaDialog extends StatefulWidget {
  const _QuickIdeaDialog();

  @override
  State<_QuickIdeaDialog> createState() => _QuickIdeaDialogState();
}

class _QuickIdeaDialogState extends State<_QuickIdeaDialog> {
  IdeaType _type = IdeaType.gift;
  final TextEditingController _titleController = TextEditingController();
  final TextEditingController _detailsController = TextEditingController();

  @override
  void dispose() {
    _titleController.dispose();
    _detailsController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('Add Idea'),
      content: SingleChildScrollView(
        child: ConstrainedBox(
          constraints: const BoxConstraints(maxWidth: 420),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: <Widget>[
              SegmentedButton<IdeaType>(
                segments: const <ButtonSegment<IdeaType>>[
                  ButtonSegment<IdeaType>(
                    value: IdeaType.gift,
                    label: Text('Gift'),
                  ),
                  ButtonSegment<IdeaType>(
                    value: IdeaType.event,
                    label: Text('Event'),
                  ),
                ],
                selected: <IdeaType>{_type},
                onSelectionChanged: (Set<IdeaType> values) {
                  setState(() {
                    _type = values.first;
                  });
                },
              ),
              const SizedBox(height: 10),
              TextField(
                controller: _titleController,
                decoration: const InputDecoration(labelText: 'Title'),
              ),
              TextField(
                controller: _detailsController,
                maxLines: 3,
                decoration: const InputDecoration(labelText: 'Details'),
              ),
            ],
          ),
        ),
      ),
      actions: <Widget>[
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: const Text('Cancel'),
        ),
        FilledButton(
          onPressed: () {
            final String title = _titleController.text.trim();
            if (title.isEmpty) {
              return;
            }
            Navigator.of(context).pop(
              _QuickIdeaDraft(
                type: _type,
                title: title,
                details: _detailsController.text.trim(),
              ),
            );
          },
          child: const Text('Add'),
        ),
      ],
    );
  }
}

class _QuickReminderDraft {
  const _QuickReminderDraft({
    required this.title,
    required this.cadence,
    required this.nextAt,
  });

  final String title;
  final ReminderCadence cadence;
  final DateTime nextAt;
}

class _QuickReminderDialog extends StatefulWidget {
  const _QuickReminderDialog();

  @override
  State<_QuickReminderDialog> createState() => _QuickReminderDialogState();
}

class _QuickReminderDialogState extends State<_QuickReminderDialog> {
  final TextEditingController _titleController = TextEditingController();
  ReminderCadence _cadence = ReminderCadence.weekly;
  DateTime _nextAt = DateTime.now().add(const Duration(days: 1));

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

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('Add Reminder'),
      content: SingleChildScrollView(
        child: ConstrainedBox(
          constraints: const BoxConstraints(maxWidth: 420),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: <Widget>[
              TextField(
                controller: _titleController,
                decoration: const InputDecoration(labelText: 'Title'),
              ),
              const SizedBox(height: 10),
              DropdownButtonFormField<ReminderCadence>(
                initialValue: _cadence,
                decoration: const InputDecoration(labelText: 'Cadence'),
                items: ReminderCadence.values
                    .map(
                      (ReminderCadence cadence) =>
                          DropdownMenuItem<ReminderCadence>(
                            value: cadence,
                            child: Text(cadence.name),
                          ),
                    )
                    .toList(growable: false),
                onChanged: (ReminderCadence? value) {
                  if (value == null) {
                    return;
                  }
                  setState(() {
                    _cadence = value;
                  });
                },
              ),
              const SizedBox(height: 10),
              Row(
                children: <Widget>[
                  Expanded(
                    child: Text(
                      'Next: ${_nextAt.year}-${_nextAt.month.toString().padLeft(2, '0')}-${_nextAt.day.toString().padLeft(2, '0')} ${_nextAt.hour.toString().padLeft(2, '0')}:${_nextAt.minute.toString().padLeft(2, '0')}',
                    ),
                  ),
                  TextButton(
                    onPressed: () async {
                      final DateTime now = DateTime.now();
                      final DateTime? date = await showDatePicker(
                        context: context,
                        firstDate: now,
                        lastDate: now.add(const Duration(days: 3650)),
                        initialDate: _nextAt,
                      );
                      if (date == null || !context.mounted) {
                        return;
                      }
                      final TimeOfDay? time = await showTimePicker(
                        context: context,
                        initialTime: TimeOfDay.fromDateTime(_nextAt),
                      );
                      if (time == null) {
                        return;
                      }
                      setState(() {
                        _nextAt = DateTime(
                          date.year,
                          date.month,
                          date.day,
                          time.hour,
                          time.minute,
                        );
                      });
                    },
                    child: const Text('Change'),
                  ),
                ],
              ),
            ],
          ),
        ),
      ),
      actions: <Widget>[
        TextButton(
          onPressed: () => Navigator.of(context).pop(),
          child: const Text('Cancel'),
        ),
        FilledButton(
          onPressed: () {
            final String title = _titleController.text.trim();
            if (title.isEmpty) {
              return;
            }
            Navigator.of(context).pop(
              _QuickReminderDraft(
                title: title,
                cadence: _cadence,
                nextAt: _nextAt,
              ),
            );
          },
          child: const Text('Add'),
        ),
      ],
    );
  }
}

class _InlineMetaPill extends StatelessWidget {
  const _InlineMetaPill({required this.icon, required this.label});

  final IconData icon;
  final String label;

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 7),
      decoration: BoxDecoration(
        color: const Color(0xFFF1F7FA),
        borderRadius: BorderRadius.circular(99),
        border: Border.all(color: Colors.white),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          Icon(icon, size: 14, color: AppTheme.textSecondary),
          const SizedBox(width: 6),
          Flexible(
            child: Text(
              label,
              overflow: TextOverflow.ellipsis,
              style: Theme.of(
                context,
              ).textTheme.labelLarge?.copyWith(color: AppTheme.textSecondary),
            ),
          ),
        ],
      ),
    );
  }
}

class _AvatarSeed extends StatelessWidget {
  const _AvatarSeed({required this.name, this.size = 48});

  final String name;
  final double size;

  @override
  Widget build(BuildContext context) {
    final String initials = name
        .split(' ')
        .where((String part) => part.isNotEmpty)
        .take(2)
        .map((String part) => part[0].toUpperCase())
        .join();

    return Container(
      width: size,
      height: size,
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(size / 2),
        gradient: const LinearGradient(
          colors: <Color>[Color(0xFF1AB6C8), Color(0xFF2274E0)],
        ),
      ),
      alignment: Alignment.center,
      child: Text(
        initials,
        style: Theme.of(context).textTheme.titleMedium?.copyWith(
          color: Colors.white,
          fontWeight: FontWeight.w700,
        ),
      ),
    );
  }
}

class _ScorePill extends StatelessWidget {
  const _ScorePill({required this.score});

  final int score;

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
      decoration: BoxDecoration(
        color: const Color(0xFFEEF7F3),
        borderRadius: BorderRadius.circular(99),
      ),
      child: Text(
        '$score%',
        style: Theme.of(context).textTheme.labelLarge?.copyWith(
          color: const Color(0xFF1D9C66),
          fontWeight: FontWeight.w700,
        ),
      ),
    );
  }
}

String _dateTimeLabel(DateTime value) {
  final DateTime local = value.toLocal();
  final String month = local.month.toString().padLeft(2, '0');
  final String day = local.day.toString().padLeft(2, '0');
  final String hour = local.hour.toString().padLeft(2, '0');
  final String minute = local.minute.toString().padLeft(2, '0');
  return '$month/$day $hour:$minute';
}

String _shortDateTimeLabel(DateTime value) {
  final DateTime local = value.toLocal();
  final String year = local.year.toString();
  final String month = local.month.toString().padLeft(2, '0');
  final String day = local.day.toString().padLeft(2, '0');
  final String hour = local.hour.toString().padLeft(2, '0');
  final String minute = local.minute.toString().padLeft(2, '0');
  return '$year-$month-$day $hour:$minute';
}