import 'package:lucide_icons_flutter/lucide_icons.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../providers/project_provider.dart';
import 'project_board_screen.dart';
import 'widgets/add_project_sheet.dart';

class ProjectsScreen extends ConsumerStatefulWidget {
  const ProjectsScreen({super.key});

  @override
  ConsumerState<ProjectsScreen> createState() => _ProjectsScreenState();
}

class _ProjectsScreenState extends ConsumerState<ProjectsScreen> {
  String _searchQuery = "";

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

    return Scaffold(
      backgroundColor: Colors.grey[100],
      appBar: AppBar(
        title: const Text(
          'Projects',
          style: TextStyle(fontWeight: FontWeight.bold),
        ),
        elevation: 0,
        backgroundColor: Colors.white,
        foregroundColor: Colors.black,
        centerTitle: true,
      ),
      body: Column(
        children: [
          Container(
            color: Colors.white,
            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
            child: TextField(
              decoration: InputDecoration(
                hintText: 'Search projects...',
                prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
                contentPadding: const EdgeInsets.symmetric(vertical: 14),
              ),
              onChanged: (val) {
                setState(() => _searchQuery = val);
              },
            ),
          ),
          Expanded(
            child: projectsAsync.when(
              data: (projects) {
                final filteredProjects = projects
                    .where(
                      (p) => p.name.toLowerCase().contains(
                        _searchQuery.toLowerCase(),
                      ),
                    )
                    .toList();
                if (filteredProjects.isEmpty) {
                  return Center(
                    child: Column(
                      mainAxisSize: MainAxisSize.min,
                      children: [
                        Icon(
                          LucideIcons.folderKanban,
                          size: 48,
                          color: Colors.grey.shade400,
                        ),
                        const SizedBox(height: 12),
                        Text(
                          'No projects found.',
                          style: TextStyle(color: Colors.grey.shade500),
                        ),
                      ],
                    ),
                  );
                }
                return ListView.builder(
                  padding: const EdgeInsets.all(16),
                  itemCount: filteredProjects.length,
                  itemBuilder: (context, index) {
                    final p = filteredProjects[index];
                    return Card(
                      margin: const EdgeInsets.only(bottom: 12),
                      elevation: 0,
                      color: Colors.white,
                      shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(12),
                      ),
                      child: ListTile(
                        contentPadding: const EdgeInsets.symmetric(
                          horizontal: 16,
                          vertical: 4,
                        ),
                        title: Text(
                          p.name,
                          style: const TextStyle(fontWeight: FontWeight.bold),
                        ),
                        subtitle: Text(
                          p.description ?? 'No description',
                          style: TextStyle(
                            color: Colors.grey.shade600,
                            fontSize: 13,
                          ),
                        ),
                        trailing: Row(
                          mainAxisSize: MainAxisSize.min,
                          children: [
                            IconButton(
                              icon: Icon(
                                LucideIcons.edit,
                                size: 18,
                                color: Colors.grey.shade600,
                              ),
                              onPressed: () {
                                showModalBottomSheet(
                                  context: context,
                                  isScrollControlled: true,
                                  backgroundColor: Colors.transparent,
                                  builder: (context) =>
                                      AddProjectSheet(project: p),
                                );
                              },
                            ),
                            Icon(
                              Icons.chevron_right,
                              color: Colors.grey.shade400,
                            ),
                          ],
                        ),
                        onTap: () {
                          Navigator.push(
                            context,
                            MaterialPageRoute(
                              builder: (context) =>
                                  ProjectBoardScreen(project: p),
                            ),
                          );
                        },
                      ),
                    );
                  },
                );
              },
              loading: () => const Center(child: CircularProgressIndicator()),
              error: (err, stack) => Center(child: Text('Error: $err')),
            ),
          ),
        ],
      ),
      floatingActionButton: FloatingActionButton.extended(
        onPressed: () {
          showModalBottomSheet(
            context: context,
            isScrollControlled: true,
            backgroundColor: Colors.transparent,
            builder: (context) => const AddProjectSheet(),
          );
        },
        icon: const Icon(Icons.add),
        label: const Text('Add Project'),
      ),
    );
  }
}