basic-computer-games/16_Bug/csharp/Parts/PartCollection.cs

using System.Text;
using BugGame.Resources;

namespace BugGame.Parts;

internal class PartCollection
{
    private readonly int _maxCount;
    private readonly Message _addedMessage;
    private readonly Message _fullMessage;
    private int _count;

    public PartCollection(int maxCount, Message addedMessage, Message fullMessage)
    {
        _maxCount = maxCount;
        _addedMessage = addedMessage;
        _fullMessage = fullMessage;
    }

    public bool IsComplete => _count == _maxCount;

    public bool TryAddOne(out Message message)
    {
        if (_count < _maxCount)
        {
            _count++;
            message = _addedMessage.ForValue(_count);
            return true;
        }

        message = _fullMessage;
        return false;
    }

    protected void AppendTo(StringBuilder builder, int offset, int length, char character)
    {
        if (_count == 0) { return; }

        for (var i = 0; i < length; i++)
        {
            builder.Append(' ', offset);

            for (var j = 0; j < _count; j++)
            {
                builder.Append(character).Append(' ');
            }
            builder.AppendLine();
        }
    }
}