/// <summary>
/// Returns a list of downloded datasets.
/// </summary>
/// <returns></returns>
public DownloadHistory GetFileDownloaHistory(string url)
{
var downloadHistoryFilePath = ApplicationService.GetDownloadHistoryFilePath(_configFile.Name);
try
{
using (var r = new StreamReader(downloadHistoryFilePath))
{
var json = r.ReadToEnd();
var downloadHistories = JsonConvert.DeserializeObject <List <DownloadHistory> >(json);
Log.Debug("Read from download history file, " + _configFile.Name + "- downloadHistory.json");
r.Close();
if (downloadHistories != null)
{
DownloadHistory downloadHistory = downloadHistories.FirstOrDefault(d => d.Id == url);
return(downloadHistory);
}
return(null);
}
}
catch (FileNotFoundException e)
{
Log.Error("Could not find " + _configFile.Name + "- downloadHistory.json");
return(null);
}
}
/// <summary>
/// Writes the information about the selected files to the local download list.
/// </summary>
/// <param name="datasetFilesViewModel"></param>
public void WriteToDownloadHistoryFile(List <Download> downloads)
{
var downloadHistory = new List <DownloadHistory>();
foreach (var dataset in downloads)
{
foreach (var datasetFile in dataset.Files)
{
downloadHistory.Add(new DownloadHistory(datasetFile.Url, datasetFile.FilePath, datasetFile.DownloadedDate, datasetFile.LastUpdated));
}
}
var serializer = new JsonSerializer();
serializer.Converters.Add(new JavaScriptDateTimeConverter());
serializer.NullValueHandling = NullValueHandling.Ignore;
try
{
using (var outputFile = new StreamWriter(ApplicationService.GetDownloadHistoryFilePath(_configFile.Name), false))
using (JsonWriter writer = new JsonTextWriter(outputFile))
{
serializer.Serialize(writer, downloadHistory);
Log.Debug("Write to download history file " + _configFile.Name + "-downloadHistory.json");
writer.Close();
}
}
catch (Exception e)
{
Log.Error(e, "Write to download history file " + _configFile.Name + "-downloadHistory.json");
}
}
/// <summary>
/// Writes the information about the selected files to the local download list.
/// </summary>
/// <param name="datasetFilesViewModel"></param>
public void WriteToDownloadHistoryFile(List <DatasetFile> datasetFilesToDownload)
{
var downloadHistory = new List <DownloadHistory>();
foreach (var datasetFile in datasetFilesToDownload)
{
downloadHistory.Add(new DownloadHistory(datasetFile.Url, datasetFile.FilePath));
}
var serializer = new JsonSerializer();
serializer.Converters.Add(new JavaScriptDateTimeConverter());
serializer.NullValueHandling = NullValueHandling.Ignore;
using (var outputFile = new StreamWriter(applicationService.GetDownloadHistoryFilePath(), false))
using (JsonWriter writer = new JsonTextWriter(outputFile))
{
serializer.Serialize(writer, downloadHistory);
writer.Close();
}
}