import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';
import 'package:contacts_dataist_ir/models/contact.dart';
import 'package:contacts_dataist_ir/database/database_helper.dart';
import 'package:contacts_dataist_ir/screens/add_edit_contact_screen.dart'; // Ensure this import is here

class ContactListScreen extends StatefulWidget {
  const ContactListScreen({super.key});

  @override
  State<ContactListScreen> createState() => _ContactListScreenState();
}

class _ContactListScreenState extends State<ContactListScreen> {
  final DatabaseHelper _dbHelper = DatabaseHelper();
  List<Contact> _contacts = [];
  bool _isLoading = true;

  @override
  void initState() {
    super.initState();
    _loadContacts();
  }

  Future<void> _loadContacts() async {
    setState(() {
      _isLoading = true;
    });
    try {
      final contacts = await _dbHelper.getContacts();
      setState(() {
        _contacts = contacts;
      });
    } catch (e) {
      if (kDebugMode) {
        print('Error loading contacts: $e');
      }
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  void _navigateToAddEditContact({Contact? contact}) async {
    final result = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => AddEditContactScreen(contact: contact),
      ),
    );

    if (result == true) {
      _loadContacts();
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Contacts Dataist IR'),
        backgroundColor: Theme.of(context).colorScheme.primary,
      ),
      body:
          _isLoading
              ? const Center(child: CircularProgressIndicator())
              : _contacts.isEmpty
              ? const Center(
                child: Text(
                  'No contacts found. Add a new one!',
                  style: TextStyle(fontSize: 18),
                ),
              )
              : ListView.builder(
                itemCount: _contacts.length,
                itemBuilder: (context, index) {
                  final contact = _contacts[index];
                  return Card(
                    margin: const EdgeInsets.symmetric(
                      horizontal: 10,
                      vertical: 5,
                    ),
                    child: ListTile(
                      title: Text(contact.name),
                      subtitle: Text(
                        contact.phone ?? contact.email ?? 'No phone or email',
                      ),
                      onTap: () {
                        _navigateToAddEditContact(contact: contact);
                      },
                      trailing: IconButton(
                        icon: const Icon(Icons.delete, color: Colors.red),
                        onPressed: () async {
                          final confirm = await showDialog<bool>(
                            context: context,
                            builder:
                                (context) => AlertDialog(
                                  title: const Text('Delete Contact'),
                                  content: Text(
                                    'Are you sure you want to delete ${contact.name}?',
                                  ),
                                  actions: [
                                    TextButton(
                                      onPressed:
                                          () => Navigator.pop(context, false),
                                      child: const Text('Cancel'),
                                    ),
                                    TextButton(
                                      onPressed:
                                          () => Navigator.pop(context, true),
                                      child: const Text('Delete'),
                                    ),
                                  ],
                                ),
                          );

                          if (confirm == true) {
                            await _dbHelper.deleteContact(contact.id!);
                            _loadContacts();
                          }
                        },
                      ),
                    ),
                  );
                },
              ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          _navigateToAddEditContact();
        },
        child: const Icon(Icons.add),
      ),
    );
  }
}