NuGet.cake

public static class NuGet
{
	public static readonly string NuGetExePath = Environment.GetEnvironmentVariable("NUGET_EXE");
	public static readonly string ServerUri = Environment.GetEnvironmentVariable("NUGET_BASEURL");
	public static readonly string ApiKey = Environment.GetEnvironmentVariable("NUGET_APIKEY");

	public static string GetPackagePath(string name)
	{
		var package = $"{name}.{Build.Version}.nupkg";
		return System.IO.Path.Combine(Build.Folders.Publish, package);
	}

	public static string Execute(string arguments)
	{
		var process = System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
		{
			FileName = NuGetExePath,
			Arguments = arguments,
			UseShellExecute = false,
			RedirectStandardOutput = true,
			CreateNoWindow = true
		});

		return process.StandardOutput.ReadToEnd().Trim();
	}
}

Task("nuget-pack")
	.DoesForEach(() => Build.ToBePackedByNuGet, project =>
	{
		Information($"Creating NuGet package for '{project.Path}' in '{Build.Folders.Publish}'...");
		DotNetCorePack(project.Path, new DotNetCorePackSettings
		{
			Configuration = Build.Configuration,
			MSBuildSettings = new DotNetCoreMSBuildSettings()
				.SetVersion(Build.Version),
			NoBuild = true,
			NoRestore = true,
			OutputDirectory = Build.Folders.Publish,
			Verbosity = DotNetCoreVerbosity.Normal
		});
	});

Task("nuget-push")
	.WithCriteria(!BuildSystem.IsLocalBuild) // Only during CI/CD
	.Does(() =>
	{
		Information($"Checking variables for NuGet push ...");
		if (string.IsNullOrWhiteSpace(NuGet.ServerUri))
			throw new InvalidOperationException("NuGet artifact server uri environment variable was not found.");
		if (string.IsNullOrWhiteSpace(NuGet.ApiKey))
			throw new InvalidOperationException("NuGet API key environment variable was not found.");
	})
	.DoesForEach(() => Build.NuGetPackages, project =>
	{
		Information($"Pushing NuGet package '{project.Path}' to '{NuGet.ServerUri}' ...");
		DotNetCoreNuGetPush(project.Path, new DotNetCoreNuGetPushSettings
		{
			ApiKey = NuGet.ApiKey,
			Source = NuGet.ServerUri
		});
	});