private async Task <string> ImportImage(string fileName, string id, bool overwrite)
{
if (FileMetaDataStore.Contains(fileName))
{
return(fileName);
}
var prefix = this.GetType().Name;
var result = default(string);
if (overwrite || !FileMetaDataStore.Exists(prefix, id, out result))
{
#if NET40
Semaphore.Wait();
#else
await Semaphore.WaitAsync().ConfigureAwait(false);
#endif
try
{
if (overwrite || !FileMetaDataStore.Exists(prefix, id, out result))
{
return(await FileMetaDataStore.WriteAsync(prefix, id, fileName).ConfigureAwait(false));
}
}
finally
{
Semaphore.Release();
}
}
return(result);
}
protected virtual async Task <string> ImportImage(Discogs.ReleaseLookup releaseLookup)
{
var urls = new[]
{
releaseLookup.Release.CoverUrl,
releaseLookup.Release.ThumbUrl
};
foreach (var url in urls)
{
if (!string.IsNullOrEmpty(url))
{
try
{
var fileName = await FileMetaDataStore.IfNotExistsAsync(PREFIX, url, async result =>
{
Logger.Write(this, LogLevel.Debug, "Downloading data from url: {0}", url);
var data = await this.Discogs.GetData(url).ConfigureAwait(false);
if (data == null)
{
Logger.Write(this, LogLevel.Error, "Failed to download data from url \"{0}\": Unknown error.", url);
return(string.Empty);
}
return(await FileMetaDataStore.WriteAsync(PREFIX, url, data).ConfigureAwait(false));
}).ConfigureAwait(false);
if (!string.IsNullOrEmpty(fileName))
{
return(fileName);
}
}
catch (Exception e)
{
Logger.Write(this, LogLevel.Error, "Failed to download data from url \"{0}\": {1}", url, e.Message);
releaseLookup.AddError(e.Message);
}
}
}
return(string.Empty);
}
private static Task <string> ImportImage(IPicture value, string id, bool overwrite)
{
return(FileMetaDataStore.IfNotExistsAsync(PREFIX, id, result => FileMetaDataStore.WriteAsync(PREFIX, id, value.Data.Data), overwrite));
}