using HyperBooru.Pages.Component;

namespace HyperBooru.Services;

public interface IDialogService {
    public void Register(Dialog dialog);
    public void Unregister(Dialog dialog);
    public void BumpZIndex(Dialog dialog);
}

public class DialogService : IDialogService {
    private const int MinZLevel = 900;

    private List<Dialog> dialogs = new();

    public void Register(Dialog dialog) {
        if(!dialogs.Contains(dialog))
            dialogs.Add(dialog);

        dialog.ZIndex = dialogs.Count() - 1 + MinZLevel;
    }

    public void Unregister(Dialog dialog) {
        dialogs.Remove(dialog);
        for(int i = 0; i < dialogs.Count(); i++)
            dialogs[i].ZIndex = i + MinZLevel;
    }

    public void BumpZIndex(Dialog dialog) {
        if(!dialogs.Contains(dialog))
            return;

        dialogs.Remove(dialog);
        dialogs.Add(dialog);

        for(int i = 0; i < dialogs.Count(); i++)
            dialogs[i].ZIndex = i + MinZLevel;
    }
}