PhysiGo/app/lib/friends/widgets/add_friend.dart

import 'package:flutter/material.dart';
import 'package:physigo/friends/services/friends_service.dart';

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

  @override
  State<AddFriend> createState() => _AddFriendState();
}

class _AddFriendState extends State<AddFriend> {
  String _friendSharedId = "";

  void _onTextUpdate(String newFriendSharedId) {
    setState(() {
      _friendSharedId = newFriendSharedId;
    });
  }

  void _addFriend() async {
    try {
      await FriendsService.addFriend(_friendSharedId);
      setState(() {
        _friendSharedId = "";
      });
      _showSnackBar("Friend request sent!", 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: [
        TextField(
          onSubmitted: (_) => _addFriend(),
          onChanged: _onTextUpdate,
          decoration: const InputDecoration(
            border: OutlineInputBorder(),
            hintText: "Enter a friend's ID to add them",
          ),
        ),
        const SizedBox(height: 32),
        ElevatedButton(
          onPressed: _addFriend,
          style: ElevatedButton.styleFrom(
            padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 32),
          ),
          child: const Text("ADD",
              style: TextStyle(
                fontSize: 20,
                fontWeight: FontWeight.bold,
                letterSpacing: 1.3,
              )),
        )
      ],
    );
  }
}