osu-lazer/osu.Game/Overlays/Profile/Header/Components/AddFriendButton.cs

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics.Sprites;
using osu.Game.Users;

namespace osu.Game.Overlays.Profile.Header.Components
{
    public class AddFriendButton : ProfileHeaderStatisticsButton
    {
        public readonly Bindable<User> User = new Bindable<User>();

        public override string TooltipText => "followers";

        protected override IconUsage CreateIcon() => FontAwesome.Solid.User;

        [BackgroundDependencyLoader]
        private void load()
        {
            // todo: when friending/unfriending is implemented, the APIAccess.Friends list should be updated accordingly.
            User.BindValueChanged(user => updateFollowers(user.NewValue), true);
        }

        private void updateFollowers(User user) => SetValue(user?.FollowerCount.ToString("#,##0"));
    }
}