comunicmobile/lib/ui/tiles/accepted_friend_tile.dart

import 'package:comunic/models/friend.dart';
import 'package:comunic/models/user.dart';
import 'package:comunic/ui/widgets/account_image_widget.dart';
import 'package:comunic/utils/date_utils.dart';
import 'package:comunic/utils/intl_utils.dart';
import 'package:flutter/material.dart';

/// Accepted friend tile
///
/// @author Pierre HUBERT

enum _FriendMenuChoices { REMOVE, TOGGLE_FOLLOWING, PRIVATE_CONVERSATION }

typedef OnRequestDeleteFriend = void Function(Friend);
typedef OnSetFollowing = void Function(Friend, bool);
typedef OnOpenPrivateConversation = void Function(Friend);

class AcceptedFriendTile extends StatelessWidget {
  final Friend friend;
  final User user;
  final OnRequestDeleteFriend onRequestDelete;
  final OnSetFollowing onSetFollowing;
  final OnOpenPrivateConversation onOpenPrivateConversation;

  const AcceptedFriendTile({
    Key key,
    @required this.friend,
    @required this.user,
    @required this.onRequestDelete,
    @required this.onSetFollowing,
    @required this.onOpenPrivateConversation,
  })  : assert(friend != null),
        assert(user != null),
        assert(onRequestDelete != null),
        assert(onSetFollowing != null),
        assert(onOpenPrivateConversation != null),
        super(key: key);

  @override
  Widget build(BuildContext context) {
    return ListTile(
      leading: AccountImageWidget(user: user),
      title: Text(user.displayName),
      subtitle: friend.isConnected
          ? Text(
              tr(
                "Online",
              ),
              style: TextStyle(color: Colors.green),
            )
          : Text(
              diffTimeFromNowToStr(friend.lastActive),
            ),
      trailing: PopupMenuButton<_FriendMenuChoices>(
        itemBuilder: (c) => [
              //Open a private conversation
              PopupMenuItem(
                child: Text(tr("Private conversation")),
                value: _FriendMenuChoices.PRIVATE_CONVERSATION,
              ),

              // Update following status
              PopupMenuItem(
                child: Row(
                  children: <Widget>[
                    Icon(friend.following
                        ? Icons.check_box
                        : Icons.check_box_outline_blank),
                    Container(width: 10.0),
                    Text(friend.following ? tr("Following") : tr("Follow")),
                  ],
                ),
                value: _FriendMenuChoices.TOGGLE_FOLLOWING,
              ),

              // Remove the friend from the list
              PopupMenuItem(
                child: Text(tr("Remove")),
                value: _FriendMenuChoices.REMOVE,
              ),
            ],
        onSelected: _selectedMenuOption,
      ),
    );
  }

  void _selectedMenuOption(_FriendMenuChoices value) {
    if (value == null) return;

    switch (value) {
      // Open private conversation
      case _FriendMenuChoices.PRIVATE_CONVERSATION:
        onOpenPrivateConversation(friend);
        break;

      //Toggle following status
      case _FriendMenuChoices.TOGGLE_FOLLOWING:
        onSetFollowing(friend, !friend.following);
        break;

      //Delete friend
      case _FriendMenuChoices.REMOVE:
        onRequestDelete(friend);
        break;
    }
  }
}