/// <summary>
/// Finds all of the dependencies of a given package, including dependencies not available in the target repository.
/// </summary>
/// <param name="packageSearchMetadata">The package for which to obtain the dependencies for.</param>
/// <param name="includeUnlisted">Include unlisted packages.</param>
/// <param name="dependenciesAccumulator">A set which will contain all packages that are dependencies of the current package.</param>
/// <param name="packagesNotFoundAccumulator">A set which will contain all dependencies of the package that were not found in the NuGet feed.</param>
/// <param name="includePrerelease">Include pre-release packages.</param>
/// <param name="token">A cancellation token to allow cancellation of the task.</param>
private async Task FindDependenciesRecursiveAsync(IPackageSearchMetadata packageSearchMetadata, bool includePrerelease, bool includeUnlisted, HashSet <IPackageSearchMetadata> dependenciesAccumulator, HashSet <string> packagesNotFoundAccumulator, CancellationToken token = default)
{
// Check if package metadata resolved or has dependencies.
if (packageSearchMetadata?.DependencySets == null)
{
return;
}
// Go over all agnostic dependency sets.
foreach (var dependencySet in packageSearchMetadata.DependencySets)
{
foreach (var package in dependencySet.Packages)
{
var metadata = (await GetPackageDetails(package.Id, includePrerelease, includeUnlisted, token)).ToArray();
if (metadata.Any())
{
var lastVersion = Nuget.GetNewestVersion(metadata);
if (dependenciesAccumulator.Contains(lastVersion))
{
continue;
}
dependenciesAccumulator.Add(lastVersion);
await FindDependenciesRecursiveAsync(lastVersion, includePrerelease, includeUnlisted, dependenciesAccumulator, packagesNotFoundAccumulator, token);
}
else
{
packagesNotFoundAccumulator.Add(package.Id);
}
}
}
}
/// <summary>
/// Finds all of the dependencies of a given package, including dependencies not available in the target repository.
/// </summary>
/// <param name="packageId">The package Id for which to obtain the dependencies for.</param>
/// <param name="includeUnlisted">Include unlisted packages.</param>
/// <param name="includePrerelease">Include pre-release packages.</param>
/// <param name="token">A cancellation token to allow cancellation of the task.</param>
public async Task <FindDependenciesResult> FindDependencies(string packageId, bool includePrerelease, bool includeUnlisted, CancellationToken token = default)
{
try
{
var packages = await GetPackageDetails(packageId, includePrerelease, includeUnlisted, token);
return(await FindDependencies(Nuget.GetNewestVersion(packages), includePrerelease, includeUnlisted, token));
}
catch (Exception)
{
return(new FindDependenciesResult(new HashSet <IPackageSearchMetadata>(1), new HashSet <string>(1)));
}
}