public UIElement LoadBanner(BannerDefinition banner)
{
var baseName = PathSafe.Combine(_fileCache.CacheDirectory, $"{banner.BundleId}-v{banner.Version}");
var filename = baseName + ".zip";
var directory = baseName + "-extracted";
if (!DirectoryContainsBanner(directory, banner))
{
ExtractZipFile(filename, directory);
}
FrameworkElement bannerControl;
switch (banner.BundleType)
{
case BundleType.Xaml:
bannerControl = LoadXamlBanner(banner, directory);
break;
case BundleType.Image:
bannerControl = LoadImageBanner(banner, directory);
break;
default: throw new Exception("Unknown banner type!");
}
WpfHelper.RegisterOpen(bannerControl, url => HandleClick(banner, url));
var loadOnce = new LoadOnceHandler();
bannerControl.Loaded += (sender, args) => HandleLoaded(banner, loadOnce);
return(bannerControl);
}
private async Task <bool> FetchBanner(BannerDefinition banner)
{
var cacheFilename = $"{banner.BundleId}-v{banner.Version}.zip";
if (_fileCache.FileAvailable(cacheFilename, true) && IsMd5Valid(banner, cacheFilename))
{
return(true);
}
try
{
using (var stream = await _downloader.OpenReadTaskAsync(banner.DownloadLink))
{
await _fileCache.SaveFileAsync(cacheFilename, stream);
return(true);
}
}
catch (Exception ex)
{
_fileCache.DeleteFile(cacheFilename);
_logger.Debug(ex, "Could not fetch banners");
return(false);
}
}
public BannerMetric BuildMetric(BannerDefinition banner, BannerMetricType type)
{
var productName = _applicationNameProvider.ApplicationNameWithEdition.ToLowerInvariant().Replace(" ", "_");
var metric = new BannerMetric(productName, MachineId, _versionHelper.FormatWithThreeDigits(), banner.BundleId, banner.Version, type, banner.Campaign);
return(metric);
}
private FrameworkElement LoadXamlBanner(BannerDefinition banner, string directory)
{
var xamlFile = _directory.EnumerateFiles(directory, "*.xaml", SearchOption.AllDirectories).First();
using (var s = new FileStream(xamlFile, FileMode.Open))
{
return((FrameworkElement)XamlReader.Load(s));
}
}
public BannerMetric BuildMetric(BannerDefinition banner, BannerMetricType type)
{
var metric = _usageMetricFactory.CreateMetric <BannerMetric>();
metric.Activity = type;
metric.BundleId = banner.BundleId;
metric.Campaign = banner.Campaign;
metric.BundleVersion = banner.Version;
return(metric);
}
private FrameworkElement LoadImageBanner(BannerDefinition banner, string directory)
{
var image = _directory
.EnumerateFiles(directory, "*", SearchOption.AllDirectories)
.First(f => f.EndsWith(".jpg", true, CultureInfo.InvariantCulture) || f.EndsWith(".png", true, CultureInfo.InvariantCulture));
var bannerControl = new ImageBanner();
bannerControl.SetData(image, banner.Link);
return(bannerControl);
}
private FrameworkElement LoadXamlBanner(BannerDefinition banner, string directory)
{
var xamlFile = _directory.EnumerateFiles(directory, "*.xaml", SearchOption.AllDirectories).First();
using (var s = new FileStream(xamlFile, FileMode.Open))
{
var context = new ParserContext();
context.BaseUri = new Uri("file://" + Path.GetDirectoryName(xamlFile) + "/", UriKind.Absolute);
return((FrameworkElement)XamlReader.Load(s, context));
}
}
private void HandleLoaded(BannerDefinition banner, LoadOnceHandler loadOnce)
{
if (loadOnce.IsLoaded)
{
return;
}
try
{
loadOnce.IsLoaded = true;
var metric = _bannerMetricFactory.BuildMetric(banner, BannerMetricType.Impression);
_usageStatisticsSender.SendAsync(metric);
}
catch { }
}
private void HandleClick(BannerDefinition banner, string url)
{
url = UrlHelper.AddUrlParameters(url, banner.LinkParameters);
if (!string.IsNullOrWhiteSpace(banner.Campaign))
{
url = UrlHelper.AddUrlParameters(url, "cmp", banner.Campaign);
}
try
{
_processStarter.Start(url);
var metric = _bannerMetricFactory.BuildMetric(banner, BannerMetricType.Click);
_usageStatisticsSender.SendAsync(metric);
}
catch { }
}
private bool DirectoryContainsBanner(string directory, BannerDefinition banner)
{
if (!_directory.Exists(directory))
{
return(false);
}
var containsXaml = _directory.EnumerateFiles(directory, "*.xaml", SearchOption.AllDirectories).Any();
var containsImages = _directory
.EnumerateFiles(directory, "*", SearchOption.AllDirectories)
.Any(f => f.EndsWith(".jpg", true, CultureInfo.InvariantCulture) || f.EndsWith(".png", true, CultureInfo.InvariantCulture));
switch (banner.BundleType)
{
case BundleType.Xaml: return(containsXaml);
case BundleType.Image: return(containsImages);
default: throw new Exception("Unknown banner type!");
}
}
private bool IsMd5Valid(BannerDefinition banner, string filename)
{
var fullPath = _fileCache.GetCacheFilePath(filename);
return(_hashUtil.VerifyFileMd5(fullPath, banner.DownloadMd5));
}