import 'package:flutter/material.dart';
import 'package:physigo/friends/services/challenge_location_service.dart';
import 'package:physigo/friends/widgets/add_friend.dart';

import '../models/friend.dart';
import '../services/friends_service.dart';

class FriendsList extends StatefulWidget {
  const FriendsList({Key? key}) : super(key: key);

  @override
  State<FriendsList> createState() => _FriendsListState();
}

class _FriendsListState extends State<FriendsList> {

  void _shareLocation(String friendId) async {
    try {
      await ChallengeLocationService.shareChallengeLocation(friendId);
      _showSnackBar("Challenge's location shared!", Colors.green);
    } catch (error) {
      _showSnackBar(error.toString(), Colors.red);
    }
  }

  void _showSnackBar(String message, Color color) {
    ScaffoldMessenger.of(context).showSnackBar(SnackBar(
      content: Text(message),
      backgroundColor: color,
      duration: const Duration(milliseconds: 1500),
    ));
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        const AddFriend(),
        FutureBuilder<List<Friend>>(
          future: FriendsService.getFriends(),
          builder: (context, snapshot) {
            if (!snapshot.hasData) {
              return const CircularProgressIndicator();
            }
            final friends = snapshot.data!;
            return ListView.builder(
              shrinkWrap: true,
              itemBuilder: ((context, index) => _friendTile(friends[index])),
              itemCount: friends.length,
            );
          },
        ),
      ],
    );
  }

  Widget _friendTile(Friend friend) {
    return Card(
      child: ListTile(
        title: Text("${friend.name} ${friend.surname}"),
        trailing: TextButton(
          child: const Text("Share challenge location"),
          onPressed: () => _shareLocation(friend.id),
        ),
      ),
    );
  }
}