// 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.Collections.Immutable;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Remote;
 
namespace Microsoft.CodeAnalysis.SymbolSearch
{
    internal sealed class SymbolSearchUpdateEngineProxy : ISymbolSearchUpdateEngine
    {
        private readonly RemoteServiceConnection<IRemoteSymbolSearchUpdateService> _connection;
 
        public SymbolSearchUpdateEngineProxy(RemoteHostClient client)
            => _connection = client.CreateConnection<IRemoteSymbolSearchUpdateService>(callbackTarget: null);
 
        public void Dispose()
            => _connection.Dispose();
 
        public async ValueTask<ImmutableArray<PackageWithTypeResult>> FindPackagesWithTypeAsync(string source, string name, int arity, CancellationToken cancellationToken)
        {
            var result = await _connection.TryInvokeAsync<ImmutableArray<PackageWithTypeResult>>(
                (service, cancellationToken) => service.FindPackagesWithTypeAsync(source, name, arity, cancellationToken),
                cancellationToken).ConfigureAwait(false);
 
            return result.HasValue ? result.Value : ImmutableArray<PackageWithTypeResult>.Empty;
        }
 
        public async ValueTask<ImmutableArray<PackageWithAssemblyResult>> FindPackagesWithAssemblyAsync(
            string source, string assemblyName, CancellationToken cancellationToken)
        {
            var result = await _connection.TryInvokeAsync<ImmutableArray<PackageWithAssemblyResult>>(
                (service, cancellationToken) => service.FindPackagesWithAssemblyAsync(source, assemblyName, cancellationToken),
                cancellationToken).ConfigureAwait(false);
 
            return result.HasValue ? result.Value : ImmutableArray<PackageWithAssemblyResult>.Empty;
        }
 
        public async ValueTask<ImmutableArray<ReferenceAssemblyWithTypeResult>> FindReferenceAssembliesWithTypeAsync(
            string name, int arity, CancellationToken cancellationToken)
        {
            var result = await _connection.TryInvokeAsync<ImmutableArray<ReferenceAssemblyWithTypeResult>>(
                (service, cancellationToken) => service.FindReferenceAssembliesWithTypeAsync(name, arity, cancellationToken),
                cancellationToken).ConfigureAwait(false);
 
            return result.HasValue ? result.Value : ImmutableArray<ReferenceAssemblyWithTypeResult>.Empty;
        }
 
        public async ValueTask UpdateContinuouslyAsync(string sourceName, string localSettingsDirectory, CancellationToken cancellationToken)
        {
            _ = await _connection.TryInvokeAsync(
                (service, cancellationToken) => service.UpdateContinuouslyAsync(sourceName, localSettingsDirectory, cancellationToken),
                cancellationToken).ConfigureAwait(false);
        }
    }
}