Masuit.Tools/Masuit.Tools.AspNetCore/ModelBinder/BodyOrDefaultModelBinderProvider.cs

using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.AspNetCore.Mvc.ModelBinding.Binders;

#if NET5_0_OR_GREATER

using ComplexDataModelBinderProvider = Microsoft.AspNetCore.Mvc.ModelBinding.Binders.ComplexObjectModelBinderProvider;

#else

using ComplexDataModelBinderProvider = Microsoft.AspNetCore.Mvc.ModelBinding.Binders.ComplexTypeModelBinderProvider;

#endif

namespace Masuit.Tools.AspNetCore.ModelBinder;

public class BodyOrDefaultModelBinderProvider : IModelBinderProvider
{
    private readonly BodyModelBinderProvider _bodyModelBinderProvider;
    private readonly ComplexDataModelBinderProvider _complexDataModelBinderProvider;

    public BodyOrDefaultModelBinderProvider(BodyModelBinderProvider bodyModelBinderProvider, ComplexDataModelBinderProvider complexDataModelBinderProvider)
    {
        _bodyModelBinderProvider = bodyModelBinderProvider;
        _complexDataModelBinderProvider = complexDataModelBinderProvider;
    }

    public IModelBinder GetBinder(ModelBinderProviderContext context)
    {
        if (context.BindingInfo.BindingSource != null && context.BindingInfo.BindingSource.CanAcceptDataFrom(BindingSource.Body))
        {
            var bodyBinder = _bodyModelBinderProvider.GetBinder(context);
            var complexBinder = _complexDataModelBinderProvider.GetBinder(context);
            return new BodyOrDefaultModelBinder(bodyBinder, complexBinder);
        }
        return null;
    }
}