using System;
using CeresSharp.Native;

namespace CeresSharp.Native.SafeHandles;

/// <summary>
/// Safe handle for Ceres Interpolator (BiCubic or Cubic).
/// </summary>
internal sealed class InterpolatorHandle : BaseSafeHandle
{
    private readonly bool _isBicubic;

    private InterpolatorHandle() : base()
    {
    }

    private InterpolatorHandle(IntPtr handle, bool ownsHandle, bool isBicubic) : base(handle, ownsHandle)
    {
        _isBicubic = isBicubic;
    }

    public static InterpolatorHandle CreateBicubic(IntPtr handle)
    {
        if (handle == IntPtr.Zero)
        {
            throw new Exceptions.CeresException(Exceptions.CeresErrorCode.NullPointer, "BiCubic interpolator handle is null");
        }
        return new InterpolatorHandle(handle, true, true);
    }

    public static InterpolatorHandle CreateCubic(IntPtr handle)
    {
        if (handle == IntPtr.Zero)
        {
            throw new Exceptions.CeresException(Exceptions.CeresErrorCode.NullPointer, "Cubic interpolator handle is null");
        }
        return new InterpolatorHandle(handle, true, false);
    }

    protected override void ReleaseNativeHandle(IntPtr handle)
    {
        if (_isBicubic)
        {
            CeresNative.ceres_wrapper_free_bicubic_interpolator(handle);
        }
        else
        {
            CeresNative.ceres_wrapper_free_cubic_interpolator(handle);
        }
    }
}