public static AvailableUpdates CheckForUpdate(Game game)
{
AvailableUpdates result = new AvailableUpdates();
GameUpdate availableUpdates;
if (!string.IsNullOrEmpty(game.UpdateService))
{
try
{
using (var responseStream = HttpRequestManager.Current.GetResponseStream(game.UpdateService))
{
using (var reader = new StreamReader(responseStream))
{
availableUpdates = JsonConvert.DeserializeObject<GameUpdate>(reader.ReadToEnd());
}
}
var currentVersion = FileSystem.Current.GetFile(Resources.GamesManagerExecutable).AssemblyVersion;
//if the available version is specified and is newer than what we have already, then the framework needs an update
if (availableUpdates.Framework!=null && new Version(availableUpdates.Framework.Version) > currentVersion)
{
result.Framework = availableUpdates.Framework;
}
//if the available version isn't newer than what we have already, then don't bother updating.
if (availableUpdates.Latest!=null && new Version(availableUpdates.Latest.Version) > game.Version)
{
if (availableUpdates.UpdateOlderVersions != null)
{
//try to find a partial update for this version if possible
foreach (var olderVersion in availableUpdates.UpdateOlderVersions)
{
if (new Version(olderVersion.FromVersion) == game.Version)
{
result.Game = new UpdateDownload
{
Url = olderVersion.Url,
Version = availableUpdates.Latest.Version,
MD5 = olderVersion.MD5
};
}
}
}
//otherwise resort to a full update
if (result.Game==null) result.Game = availableUpdates.Latest;
}
}
catch (Exception ex)
{
Logger.Current.Write(LogInfoLevel.Error, "Unable to read " + game.UpdateService + " - " + ex);
}
}
return result;
}