// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
 
namespace Microsoft.AspNetCore.ResponseCompression;
 
/// <summary>
/// A Collection of ICompressionProvider's that also allows them to be instantiated from an <see cref="IServiceProvider" />.
/// </summary>
public class CompressionProviderCollection : Collection<ICompressionProvider>
{
    /// <summary>
    /// Adds a type representing an <see cref="ICompressionProvider"/>.
    /// </summary>
    /// <remarks>
    /// Provider instances will be created using an <see cref="IServiceProvider" />.
    /// </remarks>
    public void Add<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] TCompressionProvider>()
        where TCompressionProvider : ICompressionProvider
    {
        Add(typeof(TCompressionProvider));
    }
 
    /// <summary>
    /// Adds a type representing an <see cref="ICompressionProvider"/>.
    /// </summary>
    /// <param name="providerType">Type representing an <see cref="ICompressionProvider"/>.</param>
    /// <remarks>
    /// Provider instances will be created using an <see cref="IServiceProvider" />.
    /// </remarks>
    public void Add([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] Type providerType)
    {
        ArgumentNullException.ThrowIfNull(providerType);
 
        if (!typeof(ICompressionProvider).IsAssignableFrom(providerType))
        {
            throw new ArgumentException($"The provider must implement {nameof(ICompressionProvider)}.", nameof(providerType));
        }
 
        var factory = new CompressionProviderFactory(providerType);
        Add(factory);
    }
}