/// <summary>
/// Use this method to trigger the <see cref="DownloadProgressChanged"/> event.
/// </summary>
/// <param name="e">The arguments.</param>
protected virtual void OnDownloadProgressChanged(AssetDownloadProgressChangedEventArgs e)
{
DownloadProgressChanged?.Invoke(this, e);
}
private void InternalDownloadAssets(Uri remoteRootPath, Fingerprint fingerprint, string dstDir, bool checkHash)
{
//var localRootDir = Path.Combine(dstDir, _masterHash);
var localRootDir = dstDir;
// Create a new directory called as the value of _masterHash.
if (!Directory.Exists(localRootDir))
{
Directory.CreateDirectory(localRootDir);
}
for (int i = 0; i < fingerprint.Count; i++)
{
var file = fingerprint[i];
// Root directory's name of the file's path.
var dirName = Path.GetDirectoryName(file.Path);
// Local directory of the file's path
var localDirPath = Path.Combine(localRootDir, dirName);
// Make sure the directory exists first.
if (!Directory.Exists(localDirPath))
{
Directory.CreateDirectory(localDirPath);
}
var localFilePath = Path.Combine(localRootDir, file.Path);
// Compute the SHA1 hashes of the files and check if the new files needs to downloaded
if (checkHash)
{
// If we're checking the SHA1 and if a file already exists with the same name/path.
if (File.Exists(localFilePath))
{
var existingFileBytes = File.ReadAllBytes(localFilePath);
var existingFileHash = InternalUtils.BytesToString(_sha1.ComputeHash(existingFileBytes));
// If the existing file have the same SHA1 as the one in the fingerprint
// we continue and ignore it.
if (existingFileHash == file.Hash)
{
var e = new AssetDownloadProgressChangedEventArgs()
{
DownloadedCount = i + 1,
FileDownloaded = file,
WasDownloaded = false,
NextDownload = fingerprint[i],
ProgressPercentage = ((i + 1) / (double)fingerprint.Count) * 100,
};
OnDownloadProgressChanged(e);
continue;
}
}
}
var fileBytes = DownloadFile(remoteRootPath, file.Path);
var args = new AssetDownloadProgressChangedEventArgs()
{
DownloadedCount = i + 1,
FileDownloaded = file,
WasDownloaded = true,
NextDownload = fingerprint[i],
ProgressPercentage = ((i + 1) / (double)fingerprint.Count) * 100,
};
OnDownloadProgressChanged(args);
File.WriteAllBytes(localFilePath, fileBytes);
}
OnDownloadCompleted(new AssetDownloadCompletedEventArgs());
}
