tane/apps/app_seeds/lib/ui/quick_add_sheet.dart

import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:image_picker/image_picker.dart';

import '../data/variety_repository.dart';
import '../i18n/strings.g.dart';
import '../state/quick_add_cubit.dart';
import 'quantity_picker.dart';

/// Picks a photo and returns its bytes (or null if cancelled). Injected so
/// widget tests can supply a fake instead of the camera plugin.
typedef PhotoPicker = Future<Uint8List?> Function();

Future<void> showQuickAddSheet(
  BuildContext context, {
  required VarietyRepository repository,
  PhotoPicker? photoPicker,
}) {
  return showModalBottomSheet<void>(
    context: context,
    isScrollControlled: true,
    builder: (_) => BlocProvider(
      create: (_) => QuickAddCubit(repository),
      child: QuickAddSheet(photoPicker: photoPicker ?? _cameraPhotoPicker),
    ),
  );
}

Future<Uint8List?> _cameraPhotoPicker() async {
  final file = await ImagePicker().pickImage(
    source: ImageSource.camera,
    maxWidth: 1280,
    imageQuality: 80,
  );
  return file?.readAsBytes();
}

class QuickAddSheet extends StatelessWidget {
  const QuickAddSheet({required this.photoPicker, super.key});

  final PhotoPicker photoPicker;

  @override
  Widget build(BuildContext context) {
    final t = context.t;
    return BlocConsumer<QuickAddCubit, QuickAddState>(
      listenWhen: (prev, curr) => !prev.submitted && curr.submitted,
      listener: (context, state) => Navigator.of(context).pop(),
      builder: (context, state) {
        final cubit = context.read<QuickAddCubit>();
        return Padding(
          padding: EdgeInsets.only(
            left: 16,
            right: 16,
            top: 16,
            bottom: MediaQuery.of(context).viewInsets.bottom + 16,
          ),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Text(
                t.quickAdd.title,
                style: Theme.of(context).textTheme.titleLarge,
              ),
              const SizedBox(height: 12),
              TextField(
                key: const Key('quickAdd.labelField'),
                autofocus: true,
                textInputAction: TextInputAction.done,
                decoration: InputDecoration(
                  labelText: t.quickAdd.labelField,
                  errorText: state.showLabelError
                      ? t.quickAdd.labelRequired
                      : null,
                  border: const OutlineInputBorder(),
                ),
                onChanged: cubit.labelChanged,
                onSubmitted: (_) => cubit.submit(),
              ),
              const SizedBox(height: 16),
              LotTypeSelector(
                value: state.lotType,
                onChanged: (type) {
                  cubit
                    ..setLotType(type)
                    ..setQuantity(null);
                },
              ),
              const SizedBox(height: 12),
              Text(
                t.quickAdd.quantity,
                style: Theme.of(context).textTheme.labelLarge,
              ),
              const SizedBox(height: 8),
              QuantityPicker(
                type: state.lotType,
                value: state.quantity,
                onChanged: cubit.setQuantity,
              ),
              const SizedBox(height: 8),
              Align(
                alignment: Alignment.centerLeft,
                child: TextButton.icon(
                  onPressed: cubit.toggleExpanded,
                  icon: Icon(
                    state.expanded ? Icons.expand_less : Icons.expand_more,
                  ),
                  label: Text(t.quickAdd.more),
                ),
              ),
              if (state.expanded) _MoreSection(photoPicker: photoPicker),
              const SizedBox(height: 8),
              Row(
                children: [
                  TextButton(
                    onPressed: () => Navigator.of(context).pop(),
                    child: Text(t.quickAdd.cancel),
                  ),
                  const Spacer(),
                  FilledButton(
                    key: const Key('quickAdd.save'),
                    onPressed: state.submitting ? null : cubit.submit,
                    child: Text(t.quickAdd.save),
                  ),
                ],
              ),
            ],
          ),
        );
      },
    );
  }
}

class _MoreSection extends StatelessWidget {
  const _MoreSection({required this.photoPicker});

  final PhotoPicker photoPicker;

  @override
  Widget build(BuildContext context) {
    final t = context.t;
    final state = context.watch<QuickAddCubit>().state;
    final cubit = context.read<QuickAddCubit>();
    return Column(
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: [
        const SizedBox(height: 8),
        if (state.photoBytes != null)
          ClipRRect(
            borderRadius: BorderRadius.circular(8),
            child: Image.memory(
              state.photoBytes!,
              height: 120,
              fit: BoxFit.cover,
            ),
          ),
        Align(
          alignment: Alignment.centerLeft,
          child: OutlinedButton.icon(
            onPressed: () async {
              final bytes = await photoPicker();
              if (bytes != null) cubit.photoPicked(bytes);
            },
            icon: const Icon(Icons.photo_camera_outlined),
            label: Text(t.quickAdd.addPhoto),
          ),
        ),
      ],
    );
  }
}