using System;
using CeresSharp.Native;

namespace CeresSharp.Native.SafeHandles;

/// <summary>
/// Safe handle for Ceres Covariance.
/// </summary>
internal sealed class CovarianceHandle : BaseSafeHandle
{
    private CovarianceHandle() : base()
    {
    }

    private CovarianceHandle(IntPtr handle, bool ownsHandle) : base(handle, ownsHandle)
    {
    }

    public static CovarianceHandle Create()
    {
        var handle = CeresNative.ceres_wrapper_create_covariance();
        if (handle == IntPtr.Zero)
        {
            throw new Exceptions.CeresException(Exceptions.CeresErrorCode.OutOfMemory, "Failed to create covariance");
        }
        return new CovarianceHandle(handle, true);
    }

    public static CovarianceHandle CreateWithOptions(IntPtr options)
    {
        var handle = CeresNative.ceres_wrapper_create_covariance_with_options(options);
        if (handle == IntPtr.Zero)
        {
            throw new Exceptions.CeresException(Exceptions.CeresErrorCode.OutOfMemory, "Failed to create covariance with options");
        }
        return new CovarianceHandle(handle, true);
    }

    protected override void ReleaseNativeHandle(IntPtr handle)
    {
        CeresNative.ceres_wrapper_free_covariance(handle);
    }
}