stream-cinema/CinemaWeb/Pages/SearchPage.cs

using System;
using System.Globalization;
using System.Web;

using CinemaWeb.Layouts;
using CinemaLib.API;
using System.Runtime.InteropServices;

namespace CinemaWeb.Pages;

public class SearchPage : BasicLayout
{
  private const int PageSize = 30;
  private const string ParamExpression = "expr";
  private const string ParamPageIdx = "page";

  protected override string Title => "Hledat filmy a seriály";

  protected override async Task RenderContentAsync(HttpRequest req, TextWriter w)
  {
    string? expr;
    if ((expr = req.Query["expr"]) == null || expr.Trim().Length == 0)
    {
      // Show search
      w.WriteLine("<h1>Hledat filmy a seriály</h1>");
      w.WriteLine("<form method=\"GET\" action=\"/\">");
      w.WriteLine("<input type=\"text\" name=\"" + ParamExpression + "\" style=\"width:100%;margin:1em\">");
      w.WriteLine("<input type=\"submit\" value=\"Hledat\">");
      w.WriteLine("</form>");

    }
    else
    {
      // Execute search
      string? pageS = req.Query[ParamPageIdx];
      int page = pageS != null && int.TryParse(pageS, out int value) ? value : 0;
      FilterResponse? res = await Metadata.SearchAsync(expr, offset: page * PageSize, limit: PageSize, cancel: req.HttpContext.RequestAborted);

      w.WriteLine("<h1>Hledání: " + HttpUtility.HtmlEncode(expr) + "</h1>");
      if (res == null || res.hits == null || res.hits.hits == null || res.hits.hits.Count == 0)
      {
        w.WriteLine("<em>Nic nenalezeno</em>");
      }
      else
      {
        w.WriteLine("<div class=\"search-results\">");
        foreach (MediaInfo i in res.hits.hits)
        {
          if (i._source == null)
            continue;
          InfoLabelI18n? label = i._source.i18n_info_labels?.Where(x => x.lang == "cs").FirstOrDefault();
          if (label == null)
            label = i._source.i18n_info_labels?.FirstOrDefault();
          if (label == null)
            continue;

          string? artUriS = label?.art?.poster ?? label?.art?.fanart;
          Uri? artUri;
          if (artUriS == null)
            artUri = null;
          else if (Metadata.TryGetThumbnail(artUri = new Uri(artUriS), 300, 300, out Uri? artThumbUri))
            artUri = artThumbUri;

          string detailUri = (i._source.children_count == 0 ? "media" : "episodes") + "/" + i._id + "/" + HttpUtility.UrlEncode(label?.title ?? "neznamy");

          w.WriteLine("<div class=\"media-info\">");
          w.WriteLine("<div class=\"media-art\"><a href=\"" + detailUri + "\"><img src=\"" + artUri?.ToString() + "\"></a></div>");
          w.WriteLine("<div class=\"media-title\"><a href=\"" + detailUri + "\">" + HttpUtility.HtmlEncode(label?.title) + "</a></div>");
          w.WriteLine("<div class=\"media-plot\">" + HttpUtility.HtmlEncode(label?.plot) + "</div>");
          w.WriteLine("</div>"); // media-info
        }
        w.WriteLine("</div>");
        w.WriteLine("<div class=\"btn\"><a href=\"?" + ParamExpression + "=" + HttpUtility.UrlEncode(expr) + "&" + ParamPageIdx + "=" + (page + 1).ToString() + "\">Další</a></div>");
      }
    }
  }
}