// 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.
 
#nullable disable
 
using System;
using System.Composition;
using Microsoft.CodeAnalysis.Host.Mef;
 
namespace Microsoft.CodeAnalysis.Host
{
    [ExportWorkspaceServiceFactory(typeof(IMetadataService), ServiceLayer.Default), Shared]
    internal sealed class MetadataServiceFactory : IWorkspaceServiceFactory
    {
        [ImportingConstructor]
        [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
        public MetadataServiceFactory()
        {
        }
 
        public IWorkspaceService CreateService(HostWorkspaceServices workspaceServices)
            => new Service(workspaceServices.GetService<IDocumentationProviderService>());
 
        private sealed class Service : IMetadataService
        {
            private readonly MetadataReferenceCache _metadataCache;
 
            public Service(IDocumentationProviderService documentationService)
            {
                _metadataCache = new MetadataReferenceCache((path, properties) =>
                    MetadataReference.CreateFromFile(path, properties, documentationService.GetDocumentationProvider(path)));
            }
 
            public PortableExecutableReference GetReference(string resolvedPath, MetadataReferenceProperties properties)
                => (PortableExecutableReference)_metadataCache.GetReference(resolvedPath, properties);
        }
    }
}