/// <summary>
/// Load previously stored information on (except series information) from cache
/// </summary>
/// <returns>true if cache could be loaded successfully, false otherwise</returns>
public bool InitCache()
{
if (_cacheProvider != null)
{
if (!_cacheProvider.Initialised)
{
TvdbData data = _cacheProvider.InitCache();
if (data != null)
{//cache provider was initialised successfully
_loadedData = data;
return true;
}
//couldn't init the cache provider
return false;
}
return _loadedData != null;
}
return false;
}
/// <summary>
/// Saves cache settings
/// </summary>
/// <param name="content">settings</param>
public void SaveToCache(TvdbData content)
{
SaveToCache(content.LanguageList);
SaveToCache(content.LastUpdated);
}
/// <summary>
/// Initialises the cache, should do the following things
/// - initialise connections used for this cache provider (db connections, network shares,...)
/// - create folder structure / db tables / ... if they are not created already
/// - if this is the first time the cache has been initialised (built), mark last_updated with the
/// current date
/// </summary>
/// <returns>Tvdb Data object</returns>
public TvdbData InitCache()
{
try
{
if (!Directory.Exists(_rootFolder))
Directory.CreateDirectory(_rootFolder);
TvdbData data = LoadUserDataFromCache();
if (data == null)
{
//the cache has never been initialised before -> do it now
data = new TvdbData { LanguageList = new List<TvdbLanguage>(), LastUpdated = DateTime.Now };
SaveToCache(data);
}
Initialised = true;
return data;
}
catch (Exception ex)
{
Log.Error("Couldn't initialise cache: " + ex);
return null;
}
}
/// <summary>
/// Load the cached data
/// </summary>
/// <returns>TvdbData object</returns>
public TvdbData LoadUserDataFromCache()
{
List<TvdbLanguage> languages = LoadLanguageListFromCache();
DateTime lastUpdated = LoadLastUpdatedFromCache();
TvdbData data = new TvdbData(languages) { LastUpdated = lastUpdated };
return data;
}
/// <summary>
/// Loads the settings data from cache
/// </summary>
/// <returns>The loaded TvdbData object</returns>
public TvdbData LoadUserDataFromCache()
{
String fName = _rootFolder + Path.DirectorySeparatorChar + "data.xml";
if (File.Exists(fName))
{
String xmlData = File.ReadAllText(fName);
XDocument xml = XDocument.Parse(xmlData);
var info = from dataNode in xml.Descendants("Data")
select new
{
lu = dataNode.Element("LastUpdated").Value
};
if (info.Count() == 1)
{
TvdbData data = new TvdbData();
DateTime lastUpdated = new DateTime();
try
{
lastUpdated = Util.UnixToDotNet(info.First().lu);
}
catch (FormatException ex)
{
Log.Warn("Couldn't parse date of last update", ex);
}
data.LastUpdated = lastUpdated;
data.LanguageList = LoadLanguageListFromCache();
//if (data.SeriesList == null) data.SeriesList = new List<TvdbSeries>();
return data;
}
}
return null;
}
/// <summary>
/// Saves cache settings
/// </summary>
/// <param name="content">settings</param>
public void SaveToCache(TvdbData content)
{
if (content == null)
return;
SaveToCache(content.LanguageList);
//store additional information
//- time of last update
//- more to come (eventually)
XElement xml = new XElement("Data");
xml.Add(new XElement("LastUpdated", Util.DotNetToUnix(content.LastUpdated)));
String data = xml.ToString();
File.WriteAllText(_rootFolder + Path.DirectorySeparatorChar + "data.xml", data);
}
