using WaifuCellar.Parts.Base;

namespace WaifuCellar.Parts.Human;

public sealed class HumanHead(Part? parentPart) : Head {
    public override Part? ParentPart { get; set; } = parentPart;
    private List<Part> _attachedParts = [];
    public override List<Part> AttachedParts => _attachedParts;


    public Eye? LeftEye {
        get;
        set {
            _attachedParts.Remove(field!);
            field = value;
            _attachedParts.Add(field!);
        }
    }

    public Eye? RightEye {
        get;
        set {
            _attachedParts.Remove(field!);
            field = value;
            _attachedParts.Add(field!);
        }
    }

    public Mouth? Mouth {
        get;
        set {
            _attachedParts.Remove(field!);
            field = value;
            _attachedParts.Add(field!);
        }
    }

    public void AddPart(Eye eye, EPosition position) {
        if (position == EPosition.Left) {
            LeftEye = eye;
            return;
        }

        if (position == EPosition.Right) {
            RightEye = eye;
            return;
        }
    }
    
    public override void AddPart(Part part) {
        if (part is Eye eye) {
            if (LeftEye == null) {
                LeftEye = eye;
                return;
            }

            if (RightEye == null) {
                RightEye = eye;
                return;
            }
        }
        
        if (part is Mouth mouth) {
            if (Mouth == null) {
                Mouth = mouth;
                return;
            }
        }
        
        throw new PartNotAttachableException(part, typeof(HumanHead));
    }

    public HumanHead(Part? parentPart, Eye? leftEye, Eye? rightEye, Mouth? mouth) : this(parentPart) {
        ParentPart = parentPart;
        LeftEye = leftEye;
        RightEye = rightEye;
        Mouth = mouth;
    }
}