/// <summary>
/// Download a new data.
/// </summary>
/// <param name="url"></param>
/// <param name="dataViewModel"></param>
/// <returns></returns>
private bool DownloadDataProcess(WebClient webClient, string url, ProgressDialogViewModel dataViewModel = null)
{
bool isDownloadOk = true;
// Add necessary headers to access our release location (github).
// Note: Headers are applied only for upcoming request, not for all requests.
webClient.Headers.Add("User-Agent", "Nothing");
// Download string that represents json.
var content = webClient.DownloadString(url);
// Deserialize json.
var jobj = (JArray)JsonConvert.DeserializeObject(content);
for (int i = 0; i < jobj.Count; i++)
{
// Get necessary json items.
var isDir = jobj[i]["type"].ToString() == "dir" ? true : false;
var name = jobj[i]["name"].ToString();
var path = jobj[i]["path"].ToString();
var downloadUrl = jobj[i]["download_url"].ToString();
// If the item is DIR, go into recurse.
if (isDir)
{
if (!DownloadDataProcess(webClient, Path.Combine(url, name), dataViewModel))
{
isDownloadOk = false;
break;
}
}
// Otherwise, download the file.
else
{
// Get local path where to place a new file.
var localPath = Path.Combine(
SettingsConfiguration.ApplicationDataDirPath,
path.Length > SettingsConfiguration.RemoteDataDirRelPath.Length ? path.Substring(SettingsConfiguration.RemoteDataDirRelPath.Length) : path // just to make sure the path has enough length to be able to substring it
);
// Create local directory if does not exist (it is subdir of the documents data configpath - no need to check it)
if (!Directory.Exists(Path.GetDirectoryName(localPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(localPath));
}
// Update data.
if (dataViewModel != null)
{
dataViewModel.WorkOn = "Downloading... " + name;
}
// Download file.
webClient.DownloadFile(downloadUrl, localPath);
}
}
return(isDownloadOk);
}
public bool DownloadData(string url, ProgressDialogViewModel dataViewModel = null)
{
bool isDownloadOk = true;
// Create web client interface.
WebClient wc = new WebClient();
try
{
// Start download.
if (!DownloadDataProcess(wc, url, dataViewModel))
{
isDownloadOk = false;
}
}
catch (Exception ex)
{
// Github API access limit reached:
// System.Net.WebException: The remote server returned an error: (403) Forbidden.
// No internet connection:
// System.Net.WebException: The remote name could not be resolved: 'api.github.com'.
isDownloadOk = false;
IoC.Logger.Log($"Unexpected error occurred during downloading/updating files: ({ex.GetType()}) {ex.Message}", LogLevel.Error);
}
finally
{
// Dispose web client interface.
if (wc != null)
{
((IDisposable)wc).Dispose();
}
}
return(isDownloadOk);
}
