/// <summary>
/// Gets the latest version of the specified NuGet package.
/// </summary>
/// <param name="client">The <see cref="NuGetClient"/> instance.</param>
/// <param name="packageId">The ID of the NuGet package.</param>
/// <param name="includePrerelease">
/// Indicates whether to consider pre-release versions of the package when looking for the latest version.
/// </param>
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of
/// cancellation.
/// </param>
/// <returns>
/// The NuGet package as a <see cref="Stream"/>; or <c>null</c> if the specific package was
/// not found at any of the sources.
/// </returns>
public static async Task <Stream?> GetLatestPackageAsync(this NuGetClient client, string packageId,
bool includePrerelease = false, CancellationToken cancellationToken = default)
{
NuGetVersion?latestVersion = await client.GetPackageLatestVersionAsync(packageId, includePrerelease,
cancellationToken);
if (latestVersion is null)
{
return(null);
}
return(await client.GetPackageAsync(packageId, latestVersion.Value, cancellationToken));
}
/// <summary>
/// Downloads the latest version of a NuGet package to a directory.
/// </summary>
/// <param name="client">The <see cref="NuGetClient"/> instance.</param>
/// <param name="packageId">The ID of the NuGet package.</param>
/// <param name="directory">The directory to save the NuGet package to.</param>
/// <param name="fileName">
/// Optional file name for the downloaded package. If not specified, then the name is
/// <c>[package id].[version].nupkg</c>.
/// </param>
/// <param name="overwrite">
/// Indicates whether to overwrite the package file, if it already exists (default: false).
/// </param>
/// <param name="includePrerelease">
/// Indicates whether to consider pre-release versions of the package when calculating the
/// version of the latest package.
/// </param>
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of
/// cancellation.
/// </param>
/// <returns>
/// A <see cref="FileInfo"/> instance denoting the downloaded file; <c>null</c> if the
/// package could not be downloaded and saved.
/// </returns>
public static async Task <FileInfo?> DownloadLatestPackageAsync(this NuGetClient client, string packageId,
string directory, string?fileName = null, bool overwrite = false, bool includePrerelease = false,
CancellationToken cancellationToken = default)
{
NuGetVersion?latestVersion = await client.GetPackageLatestVersionAsync(packageId, includePrerelease,
cancellationToken);
if (latestVersion is null)
{
return(null);
}
return(await client.DownloadPackageAsync(packageId, latestVersion.Value, directory, fileName, overwrite,
cancellationToken));
}