EDIT

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.remote.controller;

import java.io.IOException;

import java.util.Arrays;

import java.util.List;

import java.util.Map;

import java.util.Set;

import java.util.UUID;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.http.HttpException;

import org.apache.log4j.Logger;

//import org.mortbay.log.Log;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.ResponseBody;

import eu.etaxonomy.cdm.api.service.IMediaService;

import eu.etaxonomy.cdm.api.service.media.MediaInfoFactory;

import eu.etaxonomy.cdm.common.URI;

import eu.etaxonomy.cdm.common.media.CdmImageInfo;

import eu.etaxonomy.cdm.model.media.Media;

import eu.etaxonomy.cdm.model.media.MediaRepresentation;

import eu.etaxonomy.cdm.remote.exception.NoRecordsMatchException;

import io.swagger.annotations.Api;

/**

 * TODO write controller documentation

 *

 * @author a.kohlbecker

 * @since 24.03.2009

 */

@Controller

@Api("media")

@RequestMapping(value = {"/media/{uuid}"})

public class MediaController extends AbstractIdentifiableController<Media, IMediaService>{

    private static final Logger logger = Logger.getLogger(MediaController.class);

    @Autowired

    private MediaInfoFactory mediaInfoFactory;

    @Autowired

    @Override

    public void setService(IMediaService service) {

        this.service = service;

    }

    private static final List<String> MEDIA_INIT_STRATEGY = Arrays.asList(new String []{

            "*",

            "representations",

            "representations.parts"

    });

    @RequestMapping(value = {"metadata"}, method = RequestMethod.GET)

    @ResponseBody // = is REST service method with json response

    public Map<String, String> doGetMediaMetaData(

            @PathVariable("uuid") UUID uuid,

            @RequestParam(value = "applyFilterPreset", defaultValue = "true") Boolean applyFilterPreset,

            HttpServletRequest request,

            HttpServletResponse response) throws IOException {

        Map<String, String> result;

        try{

            Media media = getCdmBaseInstance(uuid, response, MEDIA_INIT_STRATEGY);

            Set<MediaRepresentation> representations = media.getRepresentations();

            if(media.getRepresentations().isEmpty()) {

                return null;

            }

            MediaRepresentation mediaRepresentation = representations.iterator().next();

            URI uri = null;

            try {

                if(applyFilterPreset) {

                   result = service.readResourceMetadataFiltered(mediaRepresentation);

                } else {

                    uri = mediaRepresentation.getParts().get(0).getUri();

                    CdmImageInfo cdmImageInfo = mediaInfoFactory.cdmImageInfoWithMetaData(uri);

                    result = cdmImageInfo.getMetaData();

                }

            } catch (IOException | HttpException e) {

                logger.info(e.getMessage());

                if(uri != null) {

                    // may happen when applyFilterPreset == false

                    HttpStatusMessage.create("Reading media file from " + uri.toString() + " failed due to (" + e.getMessage() + ")", 400).send(response);

                } else {

                    // may happen when applyFilterPreset == true

                    HttpStatusMessage.create("Reading media file failed due to (" + e.getMessage() + ")", 400).send(response);

                }

                return null;

            }

        } catch (NoRecordsMatchException e){

           /* IGNORE */

           /* java.lang.IllegalStateException: STREAM is thrown by the servlet container

            * if the model and view is returned after the http error has been send

            * so we return null here

            */

            return null;

        }

        return result;

    }

}