public async Task <List <RevisionAction <JiraAttachment> > > DownloadAttachments(JiraRevision rev)
{
var attChanges = rev.AttachmentActions;
if (attChanges != null && attChanges.Any(a => a.ChangeType == RevisionChangeType.Added))
{
var downloadedAtts = new List <JiraAttachment>();
using (var web = new WebClientWrapper(this))
{
foreach (var remoteAtt in attChanges)
{
var jiraAtt = await DownloadAttachmentAsync(remoteAtt.Value, web);
if (jiraAtt != null && !string.IsNullOrWhiteSpace(jiraAtt.LocalPath))
{
downloadedAtts.Add(jiraAtt);
}
}
}
// of added attachments, leave only attachments that have been successfully downloaded
attChanges.RemoveAll(ac => ac.ChangeType == RevisionChangeType.Added);
attChanges.AddRange(downloadedAtts.Select(da => new RevisionAction <JiraAttachment>()
{
ChangeType = RevisionChangeType.Added, Value = da
}));
}
return(attChanges);
}
private async Task <JiraAttachment> DownloadAttachmentAsync(JiraAttachment att, WebClientWrapper web)
{
if (att != null)
{
if (string.IsNullOrWhiteSpace(att.Url))
{
att = await GetAttachmentInfo(att.Id);
}
if (att != null)
{
if (!string.IsNullOrWhiteSpace(att.Url))
{
try
{
string path = Path.Combine(Settings.AttachmentsDir, att.Id, att.Filename);
EnsurePath(path);
await web.DownloadWithAuthenticationAsync(att.Url, path);
att.LocalPath = path;
Logger.Log(LogLevel.Debug, $"Downloaded attachment '{att.ToString()}'");
}
catch (Exception)
{
Logger.Log(LogLevel.Warning, $"Attachment download failed for '{att.Id}'. ");
}
}
if (!string.IsNullOrWhiteSpace(att.ThumbUrl))
{
try
{
string thumbname = Path.GetFileNameWithoutExtension(att.Filename) + ".thumb" + Path.GetExtension(att.Filename);
var thumbPath = Path.Combine(Settings.AttachmentsDir, att.Id, thumbname);
EnsurePath(thumbPath);
await web.DownloadWithAuthenticationAsync(att.ThumbUrl, Path.Combine(Settings.AttachmentsDir, att.Id, thumbname));
att.LocalThumbPath = thumbPath;
Logger.Log(LogLevel.Debug, $"Downloaded attachment thumbnail '{att.ToString()}'.");
}
catch (Exception)
{
Logger.Log(LogLevel.Warning, $"Attachment thumbnail '{att.ToString()}' download failed.");
}
}
}
}
return(att);
}