using System;
using System.Runtime.InteropServices;
using System.Text;
using ImGuiNET;

namespace Pal.Client.Extensions;

internal static class PalImGui
{
    /// <summary>
    /// None of the default BeginTabItem methods allow using flags without making the tab have a close button for some reason.
    /// </summary>
    internal static unsafe bool BeginTabItemWithFlags(string label, ImGuiTabItemFlags flags)
    {
        int labelLength = Encoding.UTF8.GetByteCount(label);
        byte* labelPtr = stackalloc byte[labelLength + 1];
        byte[] labelBytes = Encoding.UTF8.GetBytes(label);

        Marshal.Copy(labelBytes, 0, (IntPtr)labelPtr, labelLength);
        labelPtr[labelLength] = 0;

        return ImGuiNative.igBeginTabItem(labelPtr, null, flags) != 0;
    }

    public static void RadioButtonWrapped(string label, ref int choice, int value)
    {
        ImGui.BeginGroup();
        ImGui.RadioButton($"##radio{value}", value == choice);
        ImGui.SameLine();
        ImGui.TextWrapped(label);
        ImGui.EndGroup();
        if (ImGui.IsItemClicked())
            choice = value;
    }
}