using System;

using System.Collections.Generic;

using System.Linq;

using Common.Logging;

using ScriptCs.Contracts;

namespace ScriptCs.Hosting.Package

{

public class PackageInstaller : IPackageInstaller

{

private readonly IInstallationProvider _installer;

private readonly ILog _logger;

public PackageInstaller(IInstallationProvider installer, ILog logger)

{

_installer = installer;

_logger = logger;

}

public void InstallPackages(IEnumerable<IPackageReference> packageIds, bool allowPreRelease = false)

{

if (packageIds == null)

{

throw new ArgumentNullException("packageIds");

}

packageIds = packageIds.ToList();

if (!packageIds.Any())

{

_logger.Info("Nothing to install.");

return;

}

bool successful = true;

foreach (var packageId in packageIds)

{

if (_installer.IsInstalled(packageId, allowPreRelease))

{

continue;

}

if(!_installer.InstallPackage(packageId, allowPreRelease))

{

successful = false;

}

}

if (packageIds.Count() > 1)

{

_logger.Info(successful ? "Installation successful." : "Installation unsuccessful.");

}

}

}

}