// 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;
 
namespace Microsoft.CodeAnalysis.MSBuild;
 
internal sealed class RemoteBuildHost
{
    private readonly RpcClient _client;
 
    // This is always zero, as this will be the first object registered into the server for any given process
    private const int BuildHostTargetObject = 0;
 
    public RemoteBuildHost(RpcClient client)
    {
        _client = client;
    }
 
    public Task<bool> HasUsableMSBuildAsync(string projectOrSolutionFilePath, CancellationToken cancellationToken)
        => _client.InvokeAsync<bool>(BuildHostTargetObject, nameof(IBuildHost.HasUsableMSBuild), parameters: [projectOrSolutionFilePath], cancellationToken);
 
    public Task<ImmutableArray<(string ProjectPath, string ProjectGuid)>> GetProjectsInSolutionAsync(string solutionFilePath, CancellationToken cancellationToken)
        => _client.InvokeAsync<ImmutableArray<(string ProjectPath, string ProjectGuid)>>(BuildHostTargetObject, nameof(IBuildHost.GetProjectsInSolution), parameters: [solutionFilePath], cancellationToken);
 
    public async Task<RemoteProjectFile> LoadProjectFileAsync(string projectFilePath, string languageName, CancellationToken cancellationToken)
    {
        var remoteProjectFileTargetObject = await _client.InvokeAsync<int>(BuildHostTargetObject, nameof(IBuildHost.LoadProjectFileAsync), parameters: [projectFilePath, languageName], cancellationToken).ConfigureAwait(false);
 
        return new RemoteProjectFile(_client, remoteProjectFileTargetObject);
    }
 
    /// <summary>Permits loading a project file which only exists in-memory, for example, for file-based program scenarios.</summary>
    /// <param name="projectFilePath">A path to a project file which may or may not exist on disk. Note that an extension that is known by MSBuild, such as .csproj or .vbproj, should be used here.</param>
    /// <param name="projectContent">The project file XML content.</param>
    public async Task<RemoteProjectFile> LoadProjectAsync(string projectFilePath, string projectContent, string languageName, CancellationToken cancellationToken)
    {
        var remoteProjectFileTargetObject = await _client.InvokeAsync<int>(BuildHostTargetObject, nameof(IBuildHost.LoadProject), parameters: [projectFilePath, projectContent, languageName], cancellationToken).ConfigureAwait(false);
 
        return new RemoteProjectFile(_client, remoteProjectFileTargetObject);
    }
 
    public Task<string?> TryGetProjectOutputPathAsync(string projectFilePath, CancellationToken cancellationToken)
        => _client.InvokeNullableAsync<string>(BuildHostTargetObject, nameof(IBuildHost.TryGetProjectOutputPathAsync), parameters: [projectFilePath], cancellationToken);
 
    public Task ShutdownAsync(CancellationToken cancellationToken)
        => _client.InvokeAsync(BuildHostTargetObject, nameof(IBuildHost.ShutdownAsync), parameters: [], cancellationToken);
 
}