basic-computer-games/07_Basketball/csharp/Scoreboard.cs

using Basketball.Resources;
using Games.Common.IO;

namespace Basketball;

internal class Scoreboard
{
    private readonly Dictionary<Team, uint> _scores;
    private readonly IReadWrite _io;

    public Scoreboard(Team home, Team visitors, IReadWrite io)
    {
        _scores = new() { [home] = 0, [visitors] = 0 };
        Home = home;
        Visitors = visitors;
        Offense = home;  // temporary value till first center jump
        _io = io;
    }

    public bool ScoresAreEqual => _scores[Home] == _scores[Visitors];
    public Team Offense { get; set; }
    public Team Home { get; }
    public Team Visitors { get; }

    public void AddBasket(string message) => AddScore(2, message);

    public void AddFreeThrows(uint count, string message) => AddScore(count, message);

    private void AddScore(uint score, string message)
    {
        if (Offense is null) { throw new InvalidOperationException("Offense must be set before adding to score."); }

        _io.WriteLine(message);
        _scores[Offense] += score;
        Turnover();
        Display();
    }

    public void Turnover(string? message = null)
    {
        if (message is not null) { _io.WriteLine(message); }

        Offense = Offense == Home ? Visitors : Home;
    }

    public void Display(string? format = null) =>
        _io.WriteLine(format ?? Resource.Formats.Score, Home, _scores[Home], Visitors, _scores[Visitors]);
}