public async Task Get()
{
Response.Headers.Add("Content-Type", "text/event-stream");
Microsoft.AspNetCore.Http.Headers.RequestHeaders headers = Request.GetTypedHeaders();
bool returnEmpty = true;
if (headers.Referer.OriginalString.Contains("TicketBuy", StringComparison.InvariantCultureIgnoreCase))
{
int eventId = 0;
if (Int32.TryParse(headers.Referer.Segments[headers.Referer.Segments.Length - 1], out eventId))
{
if (eventId > 0)
{
bool isTicketBooked = false;
using (var db = new dbInterviewContext())
{
for (int i = 0; i < 4; i++)
{
await Task.Delay(TimeSpan.FromSeconds(2));
bool IsBuy = db.Buyer.Any(p => p.EventId == eventId);
if (IsBuy == true)
{
//ticket booked
returnEmpty = false;
string dataItem = $"data: {"TICKET_BOOKED"}\n\n";
byte[] dataItemBytes = ASCIIEncoding.ASCII.GetBytes(dataItem);
await Response.Body.WriteAsync(dataItemBytes, 0, dataItemBytes.Length);
await Response.Body.FlushAsync();
break;
}
}
}
}
}
}
if (returnEmpty)
{
string dataItem = $"data: {""}\n\n";
byte[] dataItemBytes = ASCIIEncoding.ASCII.GetBytes(dataItem);
await Response.Body.WriteAsync(dataItemBytes, 0, dataItemBytes.Length);
await Response.Body.FlushAsync();
}
}
public static (bool isRangeRequest, Microsoft.Net.Http.Headers.RangeItemHeaderValue range) ParseRange(Microsoft.AspNetCore.Http.HttpContext context, Microsoft.AspNetCore.Http.Headers.RequestHeaders requestHeaders, long length, Microsoft.Extensions.Logging.ILogger logger)
{
throw null;
}
public async Task <IActionResult> OnPostReadAsync()
{
var videoId = Helpers.GetVideoId(VideoUrl);
if (videoId == null || !videoId.IsAbsolutelySafe())
{
throw new Exception("Invalid URL format");
}
var(vtts, title) = await Helpers.GetManifestDataAsync(videoId, HttpContext.RequestAborted);
if (UseLang == null || UseLang == "*")
{
do
{
var videoDataUrl = $"https://www.googleapis.com/youtube/v3/videos?id={videoId}&key={m_config["GoogleApiKey"]}&part=snippet&fields=items/snippet/defaultAudioLanguage";
using (var client = new HttpClient())
using (HttpContext.RequestAborted.Register(client.CancelPendingRequests))
using (var stream = await client.GetStreamAsync(videoDataUrl))
using (var reader = new Newtonsoft.Json.JsonTextReader(new System.IO.StreamReader(stream)))
{
var videoData = JsonSerializer.Deserialize <YoutubeVideoData> (reader);
var defLang1 = videoData?.Infos?.FirstOrDefault()?.Snippet?.DefaultAudioLanguage;
if (defLang1 != null)
{
var defLang2 = defLang1.Split('-')[0];
if (Lang1.Prefer && (Lang1.Code == defLang1 || Lang1.Code == defLang2))
{
UseLang = Lang1.Code;
break;
}
if (Lang2.Prefer && (Lang2.Code == defLang1 || Lang2.Code == defLang2))
{
UseLang = Lang2.Code;
break;
}
if (Lang3.Prefer && (Lang3.Code == defLang1 || Lang3.Code == defLang2))
{
UseLang = Lang3.Code;
break;
}
}
}
if (Lang1.Code != null && vtts.ContainsKey(Lang1.Code))
{
UseLang = Lang1.Code;
break;
}
if (Lang2.Code != null && vtts.ContainsKey(Lang2.Code))
{
UseLang = Lang2.Code;
break;
}
if (Lang3.Code != null && vtts.ContainsKey(Lang3.Code))
{
UseLang = Lang3.Code;
break;
}
// no language could be selected based on preferences, try Accept-Language
if (Request.Headers.TryGetValue("Accept-Language", out var acceptLangs))
{
var list = new List <KeyValuePair <double, string> > ();
var headers = new Microsoft.AspNetCore.Http.Headers.RequestHeaders(Request.Headers);
foreach (var acceptLang in headers.AcceptLanguage)
{
if (acceptLang.Value.HasValue)
{
list.Add(new KeyValuePair <double, string> (acceptLang.Quality ?? 1, acceptLang.Value.Value));
}
}
list.Sort((a, b) => b.Key.CompareTo(a.Key));
foreach (var kv in list)
{
if (vtts.ContainsKey(kv.Value))
{
UseLang = kv.Value;
goto selected;
}
}
}
// no language could be selected based on preferences or Accept-Language, fall back
if (vtts.ContainsKey("en"))
{
UseLang = "en";
}
else
{
UseLang = vtts.First().Key;
}
}while (false);
}
else
if (!vtts.ContainsKey(UseLang))
{
throw new Exception("This video has no subtitles in " + UseLang);
}
selected:
AdjustVttCookies(vtts, videoId, UseLang, title);
return(RedirectToPage("Subtitles", new { VideoId = videoId, Lang = UseLang }));
}
