public async void StartDownloadSequence()
{
_is_downloading = true;
LockView();
List <ImageTag> tags = ImageTag.ParseTags(Tags.Text) as List <ImageTag>;
ImageTag rating_tag = Post.RatingTag(CurrentRating());
if (!(await CurrentBoard.GetBestTags(tags, rating_tag) is List <ImageTag> best_tags))
{
DownloadFailed("Failed to get optimal tags");
return;
}
if (CancelQueued)
{
ResetView("Download canceled");
return;
}
List <Post> posts;
try {
posts = await CurrentBoard.GetPages(best_tags, tags,
CurrentRating(), -1, this) as List <Post>;
if (posts == null)
{
ResetView("Download canceled");
return;
}
} catch (WebException e) {
DownloadFailed(e.Message);
return;
}
if (posts.Count == 0)
{
DownloadFailed($"No posts were found for {best_tags.AsTagString(' ')}");
ResetView();
return;
}
if (CancelQueued)
{
ResetView("Download canceled");
return;
}
string output_base;
try {
output_base = GetOutputPath(tags);
} catch (InvalidPathException e) {
DownloadFailed(e.Message);
return;
}
await DownloadPosts(posts, output_base);
ResetView($"Downloading {(CancelQueued ? "canceled" : "finished")}");
}