void StartDownloadReleaseNotes()
{
VersionState = UpdateVersionState.DownloadingReleaseNotes;
_webClient.DownloadDataAsync( new Uri( GetReleaseNoteUrl( HostInformation.SubAppName, NewVersion ) ) );
}
void OnDownloadDataCompleted( object sender, DownloadDataCompletedEventArgs e )
{
if( e.Cancelled )
{
VersionState = (UpdateVersionState)e.UserState;
}
else
{
Debug.Assert( _versionState == UpdateVersionState.CheckingForNewVersion || _versionState == UpdateVersionState.DownloadingReleaseNotes );
try
{
if( _versionState == UpdateVersionState.CheckingForNewVersion )
{
if( e.Error != null )
{
_log.Error( "Error while checking version", e.Error );
VersionState = UpdateVersionState.ErrorWhileCheckingVersion;
return;
}
string version = Encoding.UTF8.GetString( e.Result ).Replace( "\"", string.Empty );
NewVersion = SemanticVersion20.Parse( version );
if( NewVersion > SemanticVersion20.Parse( HostInformation.AppVersion.ToString() ) )//If the version retrieved from the server is greater than the currently installed one
{
// If the version retrived from the server is greater than the one that has been downloaded last
string retrievedVersionString = Configuration.System.GetOrSet<string>( "LastDownloadedVersion", "0.0.0" );
SemanticVersion20 retrievedVersion;
if( SemanticVersion20.TryParse( retrievedVersionString, out retrievedVersion ) && retrievedVersion < NewVersion )
{
// if a new version is available, try to download release notes before we show the update to the user.
StartDownloadReleaseNotes();
}
}
else
VersionState = UpdateVersionState.NoNewerVersion;
}
else if( _versionState == UpdateVersionState.DownloadingReleaseNotes )
{
VersionState = UpdateVersionState.NewerVersionAvailable;
string rn = null;
if( e.Error == null )
{
rn = Encoding.UTF7.GetString( e.Result );
}
// Ask the user to download it.
Application.Current.Dispatcher.BeginInvoke( (Action)(() =>
{
OnNewerVersionAvailable( rn );
}) );
}
}
catch( Exception ex )
{
_log.Error( "Error while checking version", ex );
VersionState = UpdateVersionState.ErrorWhileCheckingVersion;
}
}
}
public bool Setup( IPluginSetupInfo info )
{
_versionState = UpdateVersionState.Unknown;
_downloadState = DownloadState.None;
_webClient = new WebClient();
// Used to read the available version.
_webClient.DownloadDataCompleted += new DownloadDataCompletedEventHandler( OnDownloadDataCompleted );
// Used to download the new version.
_webClient.DownloadFileCompleted += new AsyncCompletedEventHandler( OnDownloadFileCompleted );
return true;
}
public void CheckForUpdate()
{
CheckNotBusy();
UpdateVersionState savedState = _versionState;
VersionState = UpdateVersionState.CheckingForNewVersion;
string httpRequest = GetCheckUpdateUrl( HostInformation.SubAppName );
_webClient.DownloadDataAsync( new Uri( httpRequest ), savedState );
}
void _webClient_DownloadDataCompleted( object sender, DownloadDataCompletedEventArgs e )
{
if( e.Cancelled )
{
VersionState = (UpdateVersionState)e.UserState;
}
else if( e.Error != null )
{
_log.Error( "Error while checking version", e.Error );
VersionState = UpdateVersionState.ErrorWhileCheckingVersion;
}
else
{
Debug.Assert( _versionState == UpdateVersionState.CheckingForNewVersion );
try
{
string version = Encoding.UTF8.GetString( e.Result );
NewVersion = new Version( version );
if( NewVersion > HostInformation.AppVersion )//If the version retrieved from the server is greater than the currently installed one
{
//If the version retrived from the server is greater than the one that has been downloaded last
string retrievedVersionString = Configuration.System.GetOrSet<string>( "LastDownloadedVersion", "0.0.0" );
Version retrievedVersion;
if( Version.TryParse( retrievedVersionString, out retrievedVersion ) && retrievedVersion < NewVersion )
{
VersionState = UpdateVersionState.NewerVersionAvailable;
// Ask the user to download it.
OnNewerVersionAvailable();
}
}
VersionState = UpdateVersionState.NoNewerVersion;
}
catch( Exception ex )
{
_log.Error( "Error while checking version", ex );
VersionState = UpdateVersionState.ErrorWhileCheckingVersion;
}
}
}
public void CheckForUpdate()
{
CheckNotBusy();
_distributionName = HostInformation.SubAppName;
UpdateVersionState savedState = _versionState;
VersionState = UpdateVersionState.CheckingForNewVersion;
string httpRequest = GetServerUrl() + "version/updated/currentversion/" + HostInformation.AppName + @"-" + _distributionName + "/" + HostInformation.AppVersion.ToString();
Task.Factory.StartNew( () =>
{
// This task exist to bypass the long proxy lookup (10s on my Comp) that freez the OS during bootstrap of the update checker
_webClient.DownloadDataAsync( new Uri( httpRequest ), savedState );//gets the new version from its package repository
} );
}