import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../providers/projects_provider.dart';

/// Dropdown for picking a project. Pass [value] as the current project id
/// (null = no project) and [onChanged] to receive updates.
class ProjectSelector extends ConsumerWidget {
  final int? value;
  final ValueChanged<int?> onChanged;
  final InputDecoration? decoration;

  const ProjectSelector({
    super.key,
    required this.value,
    required this.onChanged,
    this.decoration,
  });

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final projectsAsync = ref.watch(projectsProvider);

    return projectsAsync.when(
      loading: () => const LinearProgressIndicator(),
      error: (_, __) => const SizedBox.shrink(),
      data: (projects) {
        final active =
            projects.where((p) => p.status == 'active').toList();

        return DropdownButtonFormField<int?>(
          value: value,
          decoration: decoration ??
              const InputDecoration(
                labelText: 'Project (optional)',
                border: OutlineInputBorder(),
              ),
          items: [
            const DropdownMenuItem<int?>(
              value: null,
              child: Text('No project'),
            ),
            ...active.map(
              (p) => DropdownMenuItem<int?>(
                value: p.id,
                child: Text(p.title, overflow: TextOverflow.ellipsis),
              ),
            ),
          ],
          onChanged: onChanged,
        );
      },
    );
  }
}