AspNetCoreHttpScopeProvider.cs

using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using SteroidsDI.Core;

namespace SteroidsDI.AspNetCore;

/// <summary>
/// <see cref="IScopeProvider"/> for ASP.NET Core working with <see cref="IHttpContextAccessor"/>.
/// </summary>
public sealed class AspNetCoreHttpScopeProvider : IScopeProvider
{
    /// <summary>Gets scoped <see cref="IServiceProvider" /> for the current HTTP request.</summary>
    /// <param name="rootProvider">The root <see cref="IServiceProvider" /> object to obtain <see cref="IHttpContextAccessor"/>.</param>
    /// <returns>The scoped <see cref="IServiceProvider" /> object or <c>null</c> if there is no current HTTP request.</returns>
    public IServiceProvider? GetScopedServiceProvider(IServiceProvider rootProvider)
    {
        var accessor = rootProvider.GetService<IHttpContextAccessor>();
        if (accessor != null)
        {
            var context = accessor.HttpContext;
            if (context != null)
                return context.RequestServices;
        }

        return null;
    }
}