// 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;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
 
namespace Microsoft.AspNetCore.Session;
 
internal sealed class NoOpSessionStore : IDistributedSessionStore
{
    public void SetValue(EncodedKey key, byte[] value)
    {
    }
 
    public int Count => 0;
 
    public bool IsReadOnly { get; }
 
    public ICollection<EncodedKey> Keys { get; } = Array.Empty<EncodedKey>();
 
    public ICollection<byte[]> Values { get; } = Array.Empty<byte[]>();
 
    public void Clear() { }
 
    public IEnumerator<KeyValuePair<EncodedKey, byte[]>> GetEnumerator() => Enumerable.Empty<KeyValuePair<EncodedKey, byte[]>>().GetEnumerator();
 
    public bool Remove(EncodedKey key) => false;
 
    public bool TryGetValue(EncodedKey key, [MaybeNullWhen(false)] out byte[] value)
    {
        value = null;
        return false;
    }
 
    IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
}