// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using Microsoft.CodeAnalysis.Remote;
 
namespace Microsoft.CodeAnalysis.ExternalAccess.UnitTesting.Api;
 
internal sealed class UnitTestingRemoteServiceCallbackDispatcherRegistry : IRemoteServiceCallbackDispatcherProvider
{
    public static readonly UnitTestingRemoteServiceCallbackDispatcherRegistry Empty = new([]);
 
    private readonly ImmutableDictionary<Type, UnitTestingRemoteServiceCallbackDispatcher> _lazyDispatchers;
 
    public UnitTestingRemoteServiceCallbackDispatcherRegistry(IEnumerable<(Type serviceType, UnitTestingRemoteServiceCallbackDispatcher dispatcher)> lazyDispatchers)
    {
        _lazyDispatchers = lazyDispatchers.ToImmutableDictionary(e => e.serviceType, e => e.dispatcher);
    }
 
    IRemoteServiceCallbackDispatcher IRemoteServiceCallbackDispatcherProvider.GetDispatcher(Type serviceType)
        => _lazyDispatchers[serviceType];
}