stream-cinema/CinemaWeb/Pages/StreamsPage.cs

using System;
using System.Text;
using System.Web;
using CinemaLib.API;
using CinemaWeb.Layouts;

namespace CinemaWeb.Pages;

public class StreamsPage : BasicLayout
{
  private readonly string _id;
  private readonly string _title;

  public StreamsPage(string id, string title)
  {
    this._id = id;
    this._title = title;
  }

  protected override string Title => _title;

  protected override async Task RenderContentAsync(HttpRequest req, TextWriter w)
  {
    w.WriteLine("<h1>" + HttpUtility.HtmlEncode(_title) + "</h1>");
    w.WriteLine("<div><b>Zvolte kvalitu</b></div>");

    CinemaLib.API.Stream[]? res = await Metadata.StreamsAsync(_id, cancel: req.HttpContext.RequestAborted);

    if (res == null || res.Length == 0)
    {
      w.WriteLine("<em>Nic nenalezeno</em>");
    }
    else
    {
      RenderStreams(w, res, _title);
    }
  }

  internal static void RenderStreams(TextWriter w, IEnumerable<CinemaLib.API.Stream> streams, string title)
  {
    w.WriteLine("<div class=\"media-streams\">");
    foreach (CinemaLib.API.Stream i in streams)
    {
      // Gather external subtitles
      StringBuilder extSubtitles = new StringBuilder();
      if (i.subtitles != null && i.subtitles.Count != 0)
        foreach (StreamSubtitle j in i.subtitles)
          if (j.src != null)
            extSubtitles.Append("&sub=" + HttpUtility.UrlEncode(GetCompactExternalSubtitle(j.language, new Uri(j.src))));
      if (extSubtitles.Length > 0)
        extSubtitles[0] = '?';

      w.WriteLine("<div class=\"media-stream\"><a href=\"/link/" + i.provider + "/" + HttpUtility.UrlEncode(i.ident) + "/" + HttpUtility.UrlEncode(i.name) + "/" + HttpUtility.UrlEncode(title) + extSubtitles.ToString() + "\">");

      w.WriteLine($"<div class=\"stream-basic\">{Math.Round((double)(i.size ?? 0) / (1024 * 1024 * 1024), 2)} GB ({i.date_added})</div>");

      if (i.video != null && i.video.Count != 0)
      {
        StreamVideo a = i.video.First();
        string is3D = a.is3d ? " (3D)" : "";
        string hdr = a.hasHdr ? (" HDR" + (a.hdrQuality != null ? "[" + a.hdrQuality + "]" : "")) : "";
        w.WriteLine($"<div class=\"video-channel\">{a.width}x{a.height} {a.codec}{is3D} {Math.Round((a.duration ?? 0) / 60)} min{HttpUtility.HtmlEncode(hdr)}</div>");
      }

      if (i.audio != null && i.audio.Count != 0)
      {
        w.WriteLine("<div class=\"audio-channels\">");
        foreach (StreamAudio j in i.audio)
        {
          w.WriteLine($"<div class=\"audio-channel\">{j.language} {j.codec} {j.channels}</div>");
        }
        w.WriteLine("</div>");
      }

      if (i.subtitles != null && i.subtitles.Count != 0)
      {
        w.WriteLine("<div class=\"subtitle-channels\">");
        foreach (StreamSubtitle j in i.subtitles)
        {
          w.WriteLine($"<div class=\"subtitle-channel\">{j.language}</div>");
        }
        w.WriteLine("</div>");
      }

      w.WriteLine("</a></div>");
    }
    w.WriteLine("</div>");
  }

  private static string GetCompactExternalSubtitle(string lang, Uri uri) {
    string provider = "http";
    string id = uri.ToString();
    switch (uri.Host) {
      case "webshare.cz":
        const string WebsharePrefix = "#/file/";
        if (uri.AbsolutePath == "/" && uri.Fragment.StartsWith(WebsharePrefix)) {
          provider = "webshare";
          id = uri.Fragment.Substring(WebsharePrefix.Length);
        }
        break;
    }

    // Format: <lang>:<provider>:<id>
    return lang + ":" + provider + ":" + id;
  }
}