public static async Task DownloadAsync(this HttpClient client, string requestUri, Stream destination,
IDownloadable downloadable = null, CancellationToken cancellationToken = default)
{
// Get the http headers first to examine the content length
using (HttpResponseMessage response = await client.GetAsync(requestUri, HttpCompletionOption.ResponseHeadersRead))
{
long?contentLength = response.Content.Headers.ContentLength;
using (Stream download = await response.Content.ReadAsStreamAsync())
{
// Ignore progress reporting when no progress reporter was
// passed or when the content length is unknown
if (downloadable == null || !contentLength.HasValue)
{
await download.CopyToAsync(destination);
return;
}
// Convert absolute progress (bytes downloaded) into relative progress (0% - 100%)
Progress <long> relativeProgress = new Progress <long>(
totalBytes => downloadable.ReportProgress(totalBytes, contentLength.Value, totalBytes / (float)contentLength.Value * 100f)
);
// Use extension method to report progress while downloading
await download.CopyToAsync(destination, 81920, relativeProgress, cancellationToken);
downloadable.ReportProgress(contentLength.Value, contentLength.Value, 100f);
}
}
}
private async Task DeleteAppData(IDownloadable downloadable)
{
// Get all the files recursively as our total
string directory = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData), "Artemis");
if (!Directory.Exists(directory))
{
downloadable.ReportProgress(0, 0, 100);
return;
}
string source = Assembly.GetEntryAssembly().Location;
string[] files = Directory.GetFiles(directory, "*", SearchOption.AllDirectories);
// Delete all files
await Task.Run(() =>
{
int index = 0;
foreach (string file in files)
{
if (file != source)
{
File.Delete(file);
}
index++;
downloadable.ReportProgress(index, files.Length, index / (float)files.Length * 100);
}
});
downloadable.ReportProgress(0, 0, 100);
}
public async Task UninstallBinaries(IDownloadable downloadable, bool onlyDelete)
{
string source = Assembly.GetEntryAssembly().Location;
if (Directory.Exists(InstallationDirectory))
{
// Get all the files recursively as our total
string[] files = Directory.GetFiles(InstallationDirectory, "*", SearchOption.AllDirectories);
// Delete all files except the installer
await Task.Run(() =>
{
int index = 0;
foreach (string file in files)
{
if (file != source)
{
File.Delete(file);
}
index++;
downloadable.ReportProgress(index, files.Length, index / (float)files.Length * 100);
}
});
}
downloadable.ReportProgress(0, 0, 100);
if (onlyDelete)
{
return;
}
// Delete the installer itself after it closes
CleanUpOnShutdown = true;
// If needed, repeat for app data
if (RemoveAppData)
{
await DeleteAppData(downloadable);
}
// Clean up the start menu
if (Directory.Exists(_artemisStartMenuDirectory))
{
Directory.Delete(_artemisStartMenuDirectory, true);
}
}
public async Task InstallBinaries(string file, IDownloadable downloadable)
{
CleanUpOnShutdown = false;
GeneralUtilities.CreateAccessibleDirectory(DataDirectory);
GeneralUtilities.CreateAccessibleDirectory(InstallationDirectory);
using (FileStream fileStream = new FileStream(file, FileMode.Open))
{
ZipArchive archive = new ZipArchive(fileStream);
float count = 0;
foreach (ZipArchiveEntry entry in archive.Entries)
{
using (Stream unzippedEntryStream = entry.Open())
{
downloadable.ReportProgress(0, 0, count / archive.Entries.Count * 100f);
if (entry.Length > 0)
{
string path = Path.Combine(InstallationDirectory, entry.FullName);
CreateDirectoryForFile(path);
using (Stream extractStream = new FileStream(path, FileMode.OpenOrCreate))
{
await unzippedEntryStream.CopyToAsync(extractStream);
}
}
}
count++;
}
}
downloadable.ReportProgress(0, 0, 100);
// Copy installer
string source = Assembly.GetEntryAssembly().Location;
string target = Path.Combine(DataDirectory, "installer", "Artemis.Installer.exe");
if (source != target)
{
CreateDirectoryForFile(target);
File.Copy(source, target, true);
}
// Populate the start menu
if (!Directory.Exists(_artemisStartMenuDirectory))
{
Directory.CreateDirectory(_artemisStartMenuDirectory);
}
ShortcutUtilities.Create(
Path.Combine(_artemisStartMenuDirectory, "Artemis.lnk"),
Path.Combine(InstallationDirectory, "Artemis.UI.exe"),
"",
InstallationDirectory,
"Artemis",
"",
""
);
ShortcutUtilities.Create(
Path.Combine(_artemisStartMenuDirectory, "Uninstall Artemis.lnk"),
Path.Combine(DataDirectory, "installer", "Artemis.Installer.exe"),
"-uninstall",
InstallationDirectory,
"Uninstall Artemis",
"",
""
);
}
