public IUpdateState DetermineUpdateState(IInstalledPackageMetadataCollection installedPackages, IPackageMetadataCollection remotePackages)
{
ISet <IPackageMetadata> outdatedPackages = new HashSet <IPackageMetadata>();
foreach (IPackageMetadata packageMetadata in remotePackages.Values)
{
bool shouldUpdate = false;
IInstalledPackageMetadata installedPackageMetadata = null;
if (installedPackages.TryGetValue(packageMetadata.Id, out installedPackageMetadata))
{
// Check if the installed version is outdated
if (installedPackageMetadata.PublishDate < packageMetadata.PublishDate)
{
// This package is outdated - update it!
shouldUpdate = true;
}
}
else
{
// This package has not been installed
shouldUpdate = true;
}
if (shouldUpdate)
{
outdatedPackages.Add(packageMetadata);
}
}
return(new UpdateState(outdatedPackages));
}
private UpdaterCache(ICacheStorageProvider storageProvider, IInstalledPackageMetadataCollection installedMetadataCollection)
{
this.StorageProvider = storageProvider;
this.InstalledPackages = installedMetadataCollection;
}
