internal PackageItem(PackageSource source, string id, string version)
{
Id = id;
Version = version;
PackageSource = source;
FastPath = source.MakeFastPath(id, version);
}
public WebSearch(PackageSource source)
{
_source = source;
}
/// <summary>
/// Searches package sources given name and version information
///
/// Package information must be returned using <c>request.YieldPackage(...)</c> function.
/// </summary>
/// <param name="name">a name or partial name of the package(s) requested</param>
/// <param name="requiredVersion">A specific version of the package. Null or empty if the user did not specify</param>
/// <param name="minimumVersion">A minimum version of the package. Null or empty if the user did not specify</param>
/// <param name="maximumVersion">A maximum version of the package. Null or empty if the user did not specify</param>
/// <param name="id">if this is greater than zero (and the number should have been generated using <c>StartFind(...)</c>, the core is calling this multiple times to do a batch search request. The operation can be delayed until <c>CompleteFind(...)</c> is called</param>
/// <param name="request">An object passed in from the CORE that contains functions that can be used to interact with the CORE and HOST</param>
public void FindPackage(string name, string requiredVersion, string minimumVersion, string maximumVersion, int id, IRequest request)
{
request.Debug("Calling '{0}::FindPackage' '{1}','{2}','{3}','{4}'", PackageProviderName, requiredVersion, minimumVersion, maximumVersion, id);
List<PackageSource> sources;
var providerPackageSources = ProviderStorage.GetPackageSources(request);
if (request.Sources != null && request.Sources.Any())
{
sources = new List<PackageSource>();
foreach (var userRequestedSource in request.Sources)
{
if (providerPackageSources.ContainsKey(userRequestedSource))
{
sources.Add(providerPackageSources[userRequestedSource]);
}
}
}
else
{
sources = providerPackageSources.Select(i => i.Value).ToList();
}
if (request.IsCanceled)
{
return;
}
foreach (var source in sources)
{
var downloadLinks = new HashSet<Uri>();
var webSearch = new WebSearch(source);
var downloadWebsites = webSearch.Search(name, 3);
foreach (var downloadWebsite in downloadWebsites)
{
try
{
var downloadLink = DownloadLinkFinder.GetDownloadLink(downloadWebsite).Result;
// TODO: for now we're returning all potential downloads for the user to choose from
// TODO: we could provide our own ranking, e.g. check if downloadLink is the same domain as url
if (downloadLink != null && downloadLinks.Add(downloadLink))
{
var domainName = downloadLink.GetLeftPart(UriPartial.Authority).Replace("/www.", "/").Replace("http://", "").Replace("https://", "");
var packageSource = new PackageSource(domainName, domainName);
var packageItem = new PackageItem(packageSource, downloadLink.ToString(), "");
// YieldPackage returns false when operation was cancelled
if (!request.YieldPackage(packageItem, name))
{
return;
}
}
}
catch (Exception)
{
continue;
}
}
}
}
