/*
    * This file is part of ***  M y C o R e  ***
    * See http://www.mycore.de/ for details.
    *
    * MyCoRe is free software: you can redistribute it and/or modify
    * it under the terms of the GNU General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
    *
   * MyCoRe is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with MyCoRe.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package org.mycore.media.frontend.jersey;
  
  import java.io.IOException;
  import java.net.URISyntaxException;
  import java.nio.file.NoSuchFileException;
  import java.util.Arrays;
  import java.util.List;
  import java.util.Optional;
  
  import org.apache.logging.log4j.LogManager;
  import org.glassfish.jersey.server.JSONP;
  import org.mycore.datamodel.metadata.MCRObjectID;
  import org.mycore.frontend.jersey.MCRJerseyUtil;
  import org.mycore.media.video.MCRMediaSource;
  import org.mycore.media.video.MCRMediaSourceProvider;
  
  import com.google.gson.Gson;
  
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.ws.rs.GET;
  import jakarta.ws.rs.Path;
  import jakarta.ws.rs.PathParam;
  import jakarta.ws.rs.Produces;
  import jakarta.ws.rs.WebApplicationException;
  import jakarta.ws.rs.core.Context;
  import jakarta.ws.rs.core.Response.Status;
  
  /**
   * @author Thomas Scheffler (yagee)
   */
  @Path("jwplayer")
  public class MCRJWPlayerResource {
      @Context
      private HttpServletRequest request;
  
      @GET
      @Path("{derivateId}/{path: .+}/sources.js")
      @Produces({ "application/javascript" })
      @JSONP(callback = "callback", queryParam = "callback")
      public String getSourcesAsJSONP(@PathParam("derivateId") String derivateId, @PathParam("path") String path)
          throws URISyntaxException, IOException {
          // TODO: FIX THIS: https://jersey.java.net/documentation/latest/user-guide.html#d0e8837
          return getSources(derivateId, path);
      }
  
      @GET
      @Path("{derivateId}/{path: .+}/sources.json")
      @Produces({ "application/javascript" })
      public String getSources(@PathParam("derivateId") String derivateId, @PathParam("path") String path)
          throws URISyntaxException, IOException {
          MCRObjectID derivate = MCRJerseyUtil.getID(derivateId);
          MCRJerseyUtil.checkDerivateReadPermission(derivate);
          try {
              MCRMediaSourceProvider formatter = new MCRMediaSourceProvider(derivateId, path,
                  Optional.ofNullable(request.getHeader("User-Agent")),
                  () -> Arrays.stream(Optional.ofNullable(request.getQueryString()).orElse("").split("&"))
                      .filter(p -> !p.startsWith("callback="))
                      .toArray(String[]::new));
              return toJson(formatter.getSources());
          } catch (NoSuchFileException e) {
              LogManager.getLogger().warn("Could not find video file.", e);
              throw new WebApplicationException(Status.NOT_FOUND);
          }
      }
  
      private String toJson(List<MCRMediaSource> sources) {
          return new Gson().toJson(sources.stream().map(s -> new Source(s.getUri(), s.getType().getSimpleType())).toArray(
              Source[]::new));
      }
  
      /* simple pojo for json output */
      private static class Source {
          @SuppressWarnings("unused")
          private String file;
  
          @SuppressWarnings("unused")
          private String type;
  
          Source(String file, String type) {
              LogManager.getLogger().info("file : {}", file);
              this.file = file;
             this.type = type;
         }
     }
 
 }