public async Task UpdateAsync(UpdateCheckArgs args)
{
// Check for available update
var update = await CheckForUpdateAsync(args);
if (update != null)
{
// Download the update side by side
var file = await DownloadAsync(update, progress, cancellationToken);
// Launch the downloaded update
await LaunchAsync(new LaunchArgs(file.Filename));
}
}
public async Task <UpdateInfo> CheckForUpdateAsync(UpdateCheckArgs args = null)
{
var assetName = args?.AssetName ?? Path.GetFileName(fileVersionInfo.FileName);
var allowPreRelease = args != null && args.AllowPreRelease;
var ignoreTags = args?.IgnoreTags ?? new string[] { };
var uri = args?.Uri ?? defaultUri;
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/vnd.github.v3+json"));
client.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue(assetName, fileVersionInfo.FileVersion));
// Get the latest releases from GitHub
using (var response = await client.GetAsync(uri, HttpCompletionOption.ResponseHeadersRead))
{
var content = await response.Content.ReadAsStringAsync();
response.EnsureSuccessStatusCode();
var serializer = new JavaScriptSerializer();
var results = serializer.Deserialize <List <GitHubRelease> >(content);
var latest = results.FirstOrDefault(x => (allowPreRelease || !x.prerelease) &&
!ignoreTags.Any(tag => tag.Equals(x.tag_name, StringComparison.OrdinalIgnoreCase)));
if (latest == null)
{
Trace.TraceWarning("Couldn't find a release from the list returned by GitHub");
return(null);
}
var asset = latest.assets.FirstOrDefault(x => x.name.Equals(assetName, StringComparison.OrdinalIgnoreCase));
if (asset == null)
{
Trace.TraceWarning($"Couldn't find '${assetName}' in the release assets for " + latest.name);
return(null);
}
var info = new UpdateInfo
{
Version = new SemanticVersion(latest.tag_name),
Uri = asset.browser_download_url.ToString(),
IsPreRelease = latest.prerelease,
Name = asset.name,
CurrentVersion = new SemanticVersion(fileVersionInfo.ProductVersion)
};
return(info);
}
}
