public async Task DownloadAsync(IProgress <ProgressReport> progress, CancellationToken cancellationToken)
{
using (WebClient client = new WebClient())
{
client.Encoding = Encoding.UTF8;
client.Headers.Add("Accept", "application/vnd.twitchtv.v5+json; charset=UTF-8");
client.Headers.Add("Client-Id", "kimne78kx3ncx6brgo4mv6wki5h1ko");
DownloadType downloadType = downloadOptions.Id.All(x => Char.IsDigit(x)) ? DownloadType.Video : DownloadType.Clip;
string videoId = "";
List <Comment> comments = new List <Comment>();
ChatRoot chatRoot = new ChatRoot()
{
streamer = new Streamer(), video = new VideoTime(), comments = comments
};
double videoStart = 0.0;
double videoEnd = 0.0;
double videoDuration = 0.0;
int errorCount = 0;
if (downloadType == DownloadType.Video)
{
videoId = downloadOptions.Id;
GqlVideoResponse taskInfo = await TwitchHelper.GetVideoInfo(Int32.Parse(videoId));
chatRoot.streamer.name = taskInfo.data.video.owner.displayName;
chatRoot.streamer.id = int.Parse(taskInfo.data.video.owner.id);
videoStart = downloadOptions.CropBeginning ? downloadOptions.CropBeginningTime : 0.0;
videoEnd = downloadOptions.CropEnding ? downloadOptions.CropEndingTime : taskInfo.data.video.lengthSeconds;
}
else
{
GqlClipResponse taskInfo = await TwitchHelper.GetClipInfo(downloadOptions.Id);
if (taskInfo.data.clip.video == null || taskInfo.data.clip.videoOffsetSeconds == null)
{
throw new Exception("Invalid VOD for clip, deleted/expired VOD possibly?");
}
videoId = taskInfo.data.clip.video.id;
downloadOptions.CropBeginning = true;
downloadOptions.CropBeginningTime = (int)taskInfo.data.clip.videoOffsetSeconds;
downloadOptions.CropEnding = true;
downloadOptions.CropEndingTime = downloadOptions.CropBeginningTime + taskInfo.data.clip.durationSeconds;
chatRoot.streamer.name = taskInfo.data.clip.broadcaster.displayName;
chatRoot.streamer.id = int.Parse(taskInfo.data.clip.broadcaster.id);
videoStart = (int)taskInfo.data.clip.videoOffsetSeconds;
videoEnd = (int)taskInfo.data.clip.videoOffsetSeconds + taskInfo.data.clip.durationSeconds;
}
chatRoot.video.start = videoStart;
chatRoot.video.end = videoEnd;
videoDuration = videoEnd - videoStart;
double latestMessage = videoStart - 1;
bool isFirst = true;
string cursor = "";
while (latestMessage < videoEnd)
{
string response;
try
{
if (isFirst)
{
response = await client.DownloadStringTaskAsync(String.Format("https://api.twitch.tv/v5/videos/{0}/comments?content_offset_seconds={1}", videoId, videoStart));
}
else
{
response = await client.DownloadStringTaskAsync(String.Format("https://api.twitch.tv/v5/videos/{0}/comments?cursor={1}", videoId, cursor));
}
errorCount = 0;
}
catch (WebException ex)
{
await Task.Delay(1000 *errorCount);
errorCount++;
if (errorCount >= 10)
{
throw ex;
}
continue;
}
CommentResponse commentResponse = JsonConvert.DeserializeObject <CommentResponse>(response);
foreach (var comment in commentResponse.comments)
{
if (latestMessage < videoEnd && comment.content_offset_seconds > videoStart)
{
comments.Add(comment);
}
latestMessage = comment.content_offset_seconds;
}
if (commentResponse._next == null)
{
break;
}
else
{
cursor = commentResponse._next;
}
int percent = (int)Math.Floor((latestMessage - videoStart) / videoDuration * 100);
progress.Report(new ProgressReport()
{
reportType = ReportType.Percent, data = percent
});
progress.Report(new ProgressReport()
{
reportType = ReportType.MessageInfo, data = $"Downloading {percent}%"
});
cancellationToken.ThrowIfCancellationRequested();
if (isFirst)
{
isFirst = false;
}
}
if (downloadOptions.EmbedEmotes && downloadOptions.IsJson)
{
progress.Report(new ProgressReport()
{
reportType = ReportType.Message, data = "Downloading + Embedding Emotes"
});
chatRoot.emotes = new Emotes();
List <FirstPartyEmoteData> firstParty = new List <FirstPartyEmoteData>();
List <ThirdPartyEmoteData> thirdParty = new List <ThirdPartyEmoteData>();
string cacheFolder = Path.Combine(Path.GetTempPath(), "TwitchDownloader", "cache");
List <TwitchEmote> thirdPartyEmotes = new List <TwitchEmote>();
List <TwitchEmote> firstPartyEmotes = new List <TwitchEmote>();
await Task.Run(() => {
thirdPartyEmotes = TwitchHelper.GetThirdPartyEmotes(chatRoot.streamer.id, cacheFolder);
firstPartyEmotes = TwitchHelper.GetEmotes(comments, cacheFolder).ToList();
});
foreach (TwitchEmote emote in thirdPartyEmotes)
{
ThirdPartyEmoteData newEmote = new ThirdPartyEmoteData();
newEmote.id = emote.id;
newEmote.imageScale = emote.imageScale;
newEmote.data = emote.imageData;
newEmote.name = emote.name;
thirdParty.Add(newEmote);
}
foreach (TwitchEmote emote in firstPartyEmotes)
{
FirstPartyEmoteData newEmote = new FirstPartyEmoteData();
newEmote.id = emote.id;
newEmote.imageScale = 1;
newEmote.data = emote.imageData;
firstParty.Add(newEmote);
}
chatRoot.emotes.thirdParty = thirdParty;
chatRoot.emotes.firstParty = firstParty;
}
if (downloadOptions.IsJson)
{
using (TextWriter writer = File.CreateText(downloadOptions.Filename))
{
var serializer = new JsonSerializer();
serializer.Serialize(writer, chatRoot);
}
}
else
{
using (StreamWriter sw = new StreamWriter(downloadOptions.Filename))
{
foreach (var comment in chatRoot.comments)
{
string username = comment.commenter.display_name;
string message = comment.message.body;
if (downloadOptions.TimeFormat == TimestampFormat.Utc)
{
string timestamp = comment.created_at.ToString("u").Replace("Z", " UTC");
sw.WriteLine(String.Format("[{0}] {1}: {2}", timestamp, username, message));
}
else if (downloadOptions.TimeFormat == TimestampFormat.Relative)
{
TimeSpan time = new TimeSpan(0, 0, (int)comment.content_offset_seconds);
string timestamp = time.ToString(@"h\:mm\:ss");
sw.WriteLine(String.Format("[{0}] {1}: {2}", timestamp, username, message));
}
else if (downloadOptions.TimeFormat == TimestampFormat.None)
{
sw.WriteLine(String.Format("{0}: {1}", username, message));
}
}
sw.Flush();
sw.Close();
}
}
chatRoot = null;
GC.Collect();
}
}
public async Task DownloadAsync(IProgress <ProgressReport> progress, CancellationToken cancellationToken)
{
using (WebClient client = new WebClient())
{
client.Encoding = Encoding.UTF8;
client.Headers.Add("Accept", "application/vnd.twitchtv.v5+json; charset=UTF-8");
client.Headers.Add("Client-Id", "kimne78kx3ncx6brgo4mv6wki5h1ko");
DownloadType downloadType = downloadOptions.Id.All(x => Char.IsDigit(x)) ? DownloadType.Video : DownloadType.Clip;
string videoId = "";
List <Comment> comments = new List <Comment>();
ChatRoot chatRoot = new ChatRoot()
{
streamer = new Streamer(), video = new VideoTime(), comments = comments
};
double videoStart = 0.0;
double videoEnd = 0.0;
double videoDuration = 0.0;
if (downloadType == DownloadType.Video)
{
videoId = downloadOptions.Id;
JObject taskInfo = await TwitchHelper.GetVideoInfo(Int32.Parse(videoId));
chatRoot.streamer.name = taskInfo["channel"]["display_name"].ToString();
chatRoot.streamer.id = taskInfo["channel"]["_id"].ToObject <int>();
videoStart = downloadOptions.CropBeginning ? downloadOptions.CropBeginningTime : 0.0;
videoEnd = downloadOptions.CropEnding ? downloadOptions.CropEndingTime : taskInfo["length"].ToObject <double>();
}
else
{
JObject taskInfo = await TwitchHelper.GetClipInfo(downloadOptions.Id);
videoId = taskInfo["vod"]["id"].ToString();
downloadOptions.CropBeginning = true;
downloadOptions.CropBeginningTime = taskInfo["vod"]["offset"].ToObject <int>();
downloadOptions.CropEnding = true;
downloadOptions.CropEndingTime = downloadOptions.CropBeginningTime + taskInfo["duration"].ToObject <double>();
chatRoot.streamer.name = taskInfo["broadcaster"]["display_name"].ToString();
chatRoot.streamer.id = taskInfo["broadcaster"]["id"].ToObject <int>();
videoStart = taskInfo["vod"]["offset"].ToObject <double>();
videoEnd = taskInfo["vod"]["offset"].ToObject <double>() + taskInfo["duration"].ToObject <double>();
}
chatRoot.video.start = videoStart;
chatRoot.video.end = videoEnd;
videoDuration = videoEnd - videoStart;
double latestMessage = videoStart - 1;
bool isFirst = true;
string cursor = "";
while (latestMessage < videoEnd)
{
string response;
if (isFirst)
{
response = await client.DownloadStringTaskAsync(String.Format("https://api.twitch.tv/v5/videos/{0}/comments?content_offset_seconds={1}", videoId, videoStart));
}
else
{
response = await client.DownloadStringTaskAsync(String.Format("https://api.twitch.tv/v5/videos/{0}/comments?cursor={1}", videoId, cursor));
}
CommentResponse commentResponse = JsonConvert.DeserializeObject <CommentResponse>(response);
foreach (var comment in commentResponse.comments)
{
if (latestMessage < videoEnd && comment.content_offset_seconds > videoStart)
{
comments.Add(comment);
}
latestMessage = comment.content_offset_seconds;
}
if (commentResponse._next == null)
{
break;
}
else
{
cursor = commentResponse._next;
}
int percent = (int)Math.Floor((latestMessage - videoStart) / videoDuration * 100);
progress.Report(new ProgressReport()
{
reportType = ReportType.Percent, data = percent
});
progress.Report(new ProgressReport()
{
reportType = ReportType.MessageInfo, data = $"Downloading {percent}%"
});
cancellationToken.ThrowIfCancellationRequested();
if (isFirst)
{
isFirst = false;
}
}
if (downloadOptions.EmbedEmotes && downloadOptions.IsJson)
{
progress.Report(new ProgressReport()
{
reportType = ReportType.Message, data = "Downloading + Embedding Emotes"
});
chatRoot.emotes = new Emotes();
List <FirstPartyEmoteData> firstParty = new List <FirstPartyEmoteData>();
List <ThirdPartyEmoteData> thirdParty = new List <ThirdPartyEmoteData>();
string cacheFolder = Path.Combine(Path.GetTempPath(), "TwitchDownloader", "cache");
List <ThirdPartyEmote> thirdPartyEmotes = new List <ThirdPartyEmote>();
List <KeyValuePair <string, SKBitmap> > firstPartyEmotes = new List <KeyValuePair <string, SKBitmap> >();
await Task.Run(() => {
thirdPartyEmotes = TwitchHelper.GetThirdPartyEmotes(chatRoot.streamer.id, cacheFolder);
firstPartyEmotes = TwitchHelper.GetEmotes(comments, cacheFolder).ToList();
});
foreach (ThirdPartyEmote emote in thirdPartyEmotes)
{
ThirdPartyEmoteData newEmote = new ThirdPartyEmoteData();
newEmote.id = emote.id;
newEmote.imageScale = emote.imageScale;
newEmote.data = emote.imageData;
newEmote.name = emote.name;
thirdParty.Add(newEmote);
}
foreach (KeyValuePair <string, SKBitmap> emote in firstPartyEmotes)
{
FirstPartyEmoteData newEmote = new FirstPartyEmoteData();
newEmote.id = emote.Key;
newEmote.imageScale = 1;
newEmote.data = SKImage.FromBitmap(emote.Value).Encode(SKEncodedImageFormat.Png, 100).ToArray();
firstParty.Add(newEmote);
}
chatRoot.emotes.thirdParty = thirdParty;
chatRoot.emotes.firstParty = firstParty;
}
if (downloadOptions.IsJson)
{
using (TextWriter writer = File.CreateText(downloadOptions.Filename))
{
var serializer = new JsonSerializer();
serializer.Serialize(writer, chatRoot);
}
}
else
{
using (StreamWriter sw = new StreamWriter(downloadOptions.Filename))
{
foreach (var comment in chatRoot.comments)
{
string username = comment.commenter.display_name;
string message = comment.message.body;
if (downloadOptions.Timestamp)
{
string timestamp = comment.created_at.ToString("u").Replace("Z", " UTC");
sw.WriteLine(String.Format("[{0}] {1}: {2}", timestamp, username, message));
}
else
{
sw.WriteLine(String.Format("{0}: {1}", username, message));
}
}
sw.Flush();
sw.Close();
}
}
chatRoot = null;
GC.Collect();
}
}
