part of 'people_view.dart';

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 _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 _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';
}