/*
    * Licensed to The Apereo Foundation under one or more contributor license
    * agreements. See the NOTICE file distributed with this work for additional
    * information regarding copyright ownership.
    *
    *
    * The Apereo Foundation licenses this file to you under the Educational
    * Community License, Version 2.0 (the "License"); you may not use this file
    * except in compliance with the License. You may obtain a copy of the License
   * at:
   *
   *   http://opensource.org/licenses/ecl2.txt
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations under
   * the License.
   *
   */
  
  package org.opencastproject.workingfilerepository.impl;
  
  import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
  import static javax.servlet.http.HttpServletResponse.SC_NOT_MODIFIED;
  import static javax.servlet.http.HttpServletResponse.SC_NO_CONTENT;
  import static javax.servlet.http.HttpServletResponse.SC_OK;
  import static org.opencastproject.util.MimeTypes.getMimeType;
  import static org.opencastproject.util.RestUtil.R.ok;
  import static org.opencastproject.util.RestUtil.fileResponse;
  import static org.opencastproject.util.RestUtil.partialFileResponse;
  import static org.opencastproject.util.doc.rest.RestParameter.Type.FILE;
  import static org.opencastproject.util.doc.rest.RestParameter.Type.STRING;
  
  import org.opencastproject.security.api.SecurityService;
  import org.opencastproject.serviceregistry.api.ServiceRegistry;
  import org.opencastproject.util.MimeTypes;
  import org.opencastproject.util.NotFoundException;
  import org.opencastproject.util.UnknownFileTypeException;
  import org.opencastproject.util.doc.rest.RestParameter;
  import org.opencastproject.util.doc.rest.RestQuery;
  import org.opencastproject.util.doc.rest.RestResponse;
  import org.opencastproject.util.doc.rest.RestService;
  import org.opencastproject.workingfilerepository.api.PathMappable;
  import org.opencastproject.workingfilerepository.api.WorkingFileRepository;
  
  import org.apache.commons.fileupload.FileItemIterator;
  import org.apache.commons.fileupload.FileItemStream;
  import org.apache.commons.fileupload.servlet.ServletFileUpload;
  import org.apache.commons.io.IOUtils;
  import org.apache.commons.lang3.StringUtils;
  import org.apache.http.HttpStatus;
  import org.json.simple.JSONArray;
  import org.json.simple.JSONObject;
  import org.osgi.service.component.ComponentContext;
  import org.osgi.service.component.annotations.Activate;
  import org.osgi.service.component.annotations.Component;
  import org.osgi.service.component.annotations.Deactivate;
  import org.osgi.service.component.annotations.Reference;
  import org.osgi.service.jaxrs.whiteboard.propertytypes.JaxrsResource;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.File;
  import java.io.IOException;
  import java.net.URI;
  import java.util.Optional;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.ws.rs.DELETE;
  import javax.ws.rs.FormParam;
  import javax.ws.rs.GET;
  import javax.ws.rs.HeaderParam;
  import javax.ws.rs.POST;
  import javax.ws.rs.Path;
  import javax.ws.rs.PathParam;
  import javax.ws.rs.Produces;
  import javax.ws.rs.core.Context;
  import javax.ws.rs.core.MediaType;
  import javax.ws.rs.core.Response;
  
  @Path("/files")
  @RestService(name = "filerepo", title = "Working File Repository", abstractText = "Stores and retrieves files for use during media processing.", notes = {
          "All paths above are relative to the REST endpoint base (something like http://your.server/files)",
          "If the service is down or not working it will return a status 503, this means the the underlying service is "
                  + "not working and is either restarting or has failed",
          "A status code 500 means a general failure has occurred which is not recoverable and was not anticipated. In "
                  + "other words, there is a bug! You should file an error report with your server logs from the time when the "
                  + "error occurred: <a href=\"https://github.com/opencast/opencast/issues\">Opencast Issue Tracker</a>" })
  @Component(
    name = "org.opencastproject.workingfilerepository.impl.WorkingFileRepository",
    property = {
      "service.description=Working File Repository REST Endpoint",
      "opencast.service.type=org.opencastproject.files",
      "opencast.service.path=/files"
    },
    immediate = true,
    service = { WorkingFileRepositoryRestEndpoint.class, WorkingFileRepository.class, PathMappable.class }
  )
 @JaxrsResource
 public class WorkingFileRepositoryRestEndpoint extends WorkingFileRepositoryImpl {
 
   private static final Logger logger = LoggerFactory.getLogger(WorkingFileRepositoryRestEndpoint.class);
 
   /**
    * Callback from OSGi that is called when this service is activated.
    *
    * @param cc
    *          OSGi component context
    */
   @Override
   @Activate
   public void activate(ComponentContext cc) throws IOException {
     super.activate(cc);
   }
 
   /**
    * Callback from OSGi that is called when this service is deactivated.
    */
   @Override
   @Deactivate
   public void deactivate() {
     super.deactivate();
   }
 
   /**
    * Sets the remote service manager.
    *
    * @param remoteServiceManager
    */
   @Override
   @Reference
   public void setRemoteServiceManager(ServiceRegistry remoteServiceManager) {
     super.setRemoteServiceManager(remoteServiceManager);
   }
 
   @Override
   @Reference
   public void setSecurityService(SecurityService securityService) {
     super.setSecurityService(securityService);
   }
 
   @POST
   @Produces(MediaType.TEXT_HTML)
   @Path(WorkingFileRepository.MEDIAPACKAGE_PATH_PREFIX + "{mediaPackageID}/{mediaPackageElementID}")
   @RestQuery(name = "put", description = "Store a file in working repository under ./mediaPackageID/mediaPackageElementID", returnDescription = "The URL to access the stored file", pathParameters = {
           @RestParameter(name = "mediaPackageID", description = "the mediapackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "mediaPackageElementID", description = "the mediapackage element identifier", isRequired = true, type = STRING) }, responses = { @RestResponse(responseCode = SC_OK, description = "OK, file stored") }, restParameters = { @RestParameter(name = "file", description = "the filename", isRequired = true, type = FILE) })
   public Response restPut(@PathParam("mediaPackageID") String mediaPackageID,
           @PathParam("mediaPackageElementID") String mediaPackageElementID, @Context HttpServletRequest request)
           throws Exception {
     if (ServletFileUpload.isMultipartContent(request)) {
       for (FileItemIterator iter = new ServletFileUpload().getItemIterator(request); iter.hasNext();) {
         FileItemStream item = iter.next();
         if (item.isFormField()) {
           continue;
 
         }
         URI url = this.put(mediaPackageID, mediaPackageElementID, item.getName(), item.openStream());
         return Response.ok(url.toString()).build();
       }
     }
     return Response.serverError().status(400).build();
   }
 
   @POST
   @Produces(MediaType.TEXT_HTML)
   @Path(WorkingFileRepository.MEDIAPACKAGE_PATH_PREFIX + "{mediaPackageID}/{mediaPackageElementID}/{filename}")
   @RestQuery(name = "putWithFilename", description = "Store a file in working repository under ./mediaPackageID/mediaPackageElementID/filename", returnDescription = "The URL to access the stored file", pathParameters = {
           @RestParameter(name = "mediaPackageID", description = "the mediapackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "mediaPackageElementID", description = "the mediapackage element identifier", isRequired = true, type = STRING),
           @RestParameter(name = "filename", description = "the filename", isRequired = true, type = FILE) }, responses = { @RestResponse(responseCode = SC_OK, description = "OK, file stored") })
   public Response restPutURLEncoded(@Context HttpServletRequest request,
           @PathParam("mediaPackageID") String mediaPackageID,
           @PathParam("mediaPackageElementID") String mediaPackageElementID, @PathParam("filename") String filename,
           @FormParam("content") String content) throws Exception {
     String encoding = request.getCharacterEncoding();
     if (encoding == null)
       encoding = "utf-8";
 
     URI url = this.put(mediaPackageID, mediaPackageElementID, filename, IOUtils.toInputStream(content, encoding));
     return Response.ok(url.toString()).build();
   }
 
   @POST
   @Produces(MediaType.TEXT_HTML)
   @Path(WorkingFileRepository.COLLECTION_PATH_PREFIX + "{collectionId}")
   @RestQuery(name = "putInCollection", description = "Store a file in working repository under ./collectionId/filename", returnDescription = "The URL to access the stored file", pathParameters = { @RestParameter(name = "collectionId", description = "the colection identifier", isRequired = true, type = STRING) }, restParameters = { @RestParameter(name = "file", description = "the filename", isRequired = true, type = FILE) }, responses = { @RestResponse(responseCode = SC_OK, description = "OK, file stored") })
   public Response restPutInCollection(@PathParam("collectionId") String collectionId,
           @Context HttpServletRequest request) throws Exception {
     if (ServletFileUpload.isMultipartContent(request)) {
       for (FileItemIterator iter = new ServletFileUpload().getItemIterator(request); iter.hasNext();) {
         FileItemStream item = iter.next();
         if (item.isFormField()) {
           continue;
 
         }
         URI url = this.putInCollection(collectionId, item.getName(), item.openStream());
         return Response.ok(url.toString()).build();
       }
     }
     return Response.serverError().status(400).build();
   }
 
   @DELETE
   @Path(WorkingFileRepository.MEDIAPACKAGE_PATH_PREFIX + "{mediaPackageID}/{mediaPackageElementID}")
   @RestQuery(name = "delete", description = "Remove the file from the working repository under /mediaPackageID/mediaPackageElementID", returnDescription = "No content", pathParameters = {
           @RestParameter(name = "mediaPackageID", description = "the mediapackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "mediaPackageElementID", description = "the mediapackage element identifier", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_OK, description = "File deleted"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "File did not exist") })
   public Response restDelete(@PathParam("mediaPackageID") String mediaPackageID,
           @PathParam("mediaPackageElementID") String mediaPackageElementID) {
     try {
       if (delete(mediaPackageID, mediaPackageElementID))
         return Response.ok().build();
       else
         return Response.status(HttpStatus.SC_NOT_FOUND).build();
     } catch (Exception e) {
       logger.error("Unable to delete element '{}' from mediapackage '{}'", mediaPackageElementID,
               mediaPackageID, e);
       return Response.serverError().entity(e.getMessage()).build();
     }
   }
 
   @DELETE
   @Path(WorkingFileRepository.COLLECTION_PATH_PREFIX + "{collectionId}/{fileName}")
   @RestQuery(name = "deleteFromCollection", description = "Remove the file from the working repository under /collectionId/filename", returnDescription = "No content", pathParameters = {
           @RestParameter(name = "collectionId", description = "the collection identifier", isRequired = true, type = STRING),
           @RestParameter(name = "fileName", description = "the file name", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_NO_CONTENT, description = "File deleted"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "Collection or file not found") })
   public Response restDeleteFromCollection(@PathParam("collectionId") String collectionId,
           @PathParam("fileName") String fileName) {
     try {
       if (this.deleteFromCollection(collectionId, fileName))
         return Response.noContent().build();
       else
         return Response.status(SC_NOT_FOUND).build();
     } catch (Exception e) {
       logger.error("Unable to delete element '{}' from collection '{}'", fileName, collectionId, e);
       return Response.serverError().entity(e.getMessage()).build();
     }
   }
 
   @DELETE
   @Path(WorkingFileRepository.COLLECTION_PATH_PREFIX + "cleanup/{collectionId}/{numberOfDays}")
   @RestQuery(name = "cleanupOldFilesFromCollection", description = "Remove the files from the working repository under /collectionId that are older than N days", returnDescription = "No content", pathParameters = {
           @RestParameter(name = "collectionId", description = "the collection identifier", isRequired = true, type = STRING),
           @RestParameter(name = "numberOfDays", description = "files older than this number of days will be deleted", isRequired = true, type = STRING) }, responses = {
                   @RestResponse(responseCode = SC_NO_CONTENT, description = "Files deleted"),
                   @RestResponse(responseCode = SC_NOT_FOUND, description = "Collection not found") })
   public Response restCleanupOldFilesFromCollection(@PathParam("collectionId") String collectionId,
           @PathParam("numberOfDays") long days) {
     try {
       if (this.cleanupOldFilesFromCollection(collectionId, days))
         return Response.noContent().build();
       else
         return Response.status(SC_NOT_FOUND).build();
     } catch (Exception e) {
       logger.error("Unable to delete files older than '{}' days from collection '{}'",
               days, collectionId, e);
       return Response.serverError().entity(e.getMessage()).build();
     }
   }
 
   @DELETE
   @Path(WorkingFileRepository.COLLECTION_PATH_PREFIX + "cleanup/mediapackage/{numberOfDays}")
   @RestQuery(name = "cleanupOldFilesFromMediaPackage", description = "Remove files and directories from the working file repository under /mediapackage that are older than N days", returnDescription = "No content", pathParameters = {
           @RestParameter(name = "numberOfDays", description = "files older than this number of days will be deleted", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_NO_CONTENT, description = "Files deleted")})
   public Response restCleanupOldFilesFromMediaPackage(@PathParam("numberOfDays") long days) {
     try {
       this.cleanupOldFilesFromMediaPackage(days);
       return Response.noContent().build();
     } catch (Exception e) {
       return Response.serverError().entity(e.getMessage()).build();
     }
   }
 
   @GET
   @Path(WorkingFileRepository.MEDIAPACKAGE_PATH_PREFIX + "{mediaPackageID}/{mediaPackageElementID}")
   @RestQuery(name = "get", description = "Gets the file from the working repository under /mediaPackageID/mediaPackageElementID", returnDescription = "The file", pathParameters = {
           @RestParameter(name = "mediaPackageID", description = "the mediapackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "mediaPackageElementID", description = "the mediapackage element identifier", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_OK, description = "File returned"),
           @RestResponse(responseCode = SC_NOT_MODIFIED, description = "If file not modified"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "Not found") })
   public Response restGet(@PathParam("mediaPackageID") final String mediaPackageID,
           @PathParam("mediaPackageElementID") final String mediaPackageElementID,
           @HeaderParam("If-None-Match") String ifNoneMatch) throws NotFoundException {
     // Check the If-None-Match header first
     String md5 = null;
     try {
       md5 = getMediaPackageElementDigest(mediaPackageID, mediaPackageElementID);
       if (StringUtils.isNotBlank(ifNoneMatch) && md5.equals(ifNoneMatch)) {
         return Response.notModified(md5).build();
       }
     } catch (IOException e) {
       logger.warn("Error reading digest of {}/{}", mediaPackageElementID, mediaPackageElementID);
     }
     try {
       String contentType;
       File file = getFile(mediaPackageID, mediaPackageElementID);
       try {
         contentType = MimeTypes.fromString(file.getPath()).toString();
       } catch (UnknownFileTypeException e) {
         contentType = "application/octet-stream";
       }
       try {
         return ok(get(mediaPackageID, mediaPackageElementID), contentType, Optional.of(file.length()), Optional.empty());
       } catch (IOException e) {
         throw new NotFoundException();
       }
     } catch (IllegalStateException e) {
       logger.error("Unable to provide element '{}' from mediapackage '{}'", mediaPackageElementID,
               mediaPackageID, e);
       return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
     }
   }
 
   @GET
   @Path(WorkingFileRepository.MEDIAPACKAGE_PATH_PREFIX + "{mediaPackageID}/{mediaPackageElementID}/{fileName}")
   @RestQuery(name = "getWithFilename", description = "Gets the file from the working repository under /mediaPackageID/mediaPackageElementID/filename", returnDescription = "The file", pathParameters = {
           @RestParameter(name = "mediaPackageID", description = "the mediapackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "mediaPackageElementID", description = "the mediapackage element identifier", isRequired = true, type = STRING),
           @RestParameter(name = "fileName", description = "the file name", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_OK, description = "File returned"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "Not found") })
   public Response restGet(@PathParam("mediaPackageID") String mediaPackageID,
           @PathParam("mediaPackageElementID") String mediaPackageElementID, @PathParam("fileName") String fileName,
           @HeaderParam("If-None-Match") String ifNoneMatch, @HeaderParam("Range") String range)
           throws NotFoundException {
     String md5 = null;
     // Check the If-None-Match header first
     try {
       md5 = getMediaPackageElementDigest(mediaPackageID, mediaPackageElementID);
       if (StringUtils.isNotBlank(ifNoneMatch) && md5.equals(ifNoneMatch)) {
         return Response.notModified(md5).build();
       }
     } catch (IOException e) {
       logger.warn("Error reading digest of {}/{}/{}", mediaPackageElementID, mediaPackageElementID,
               fileName);
     }
 
     try {
       if (StringUtils.isNotBlank(range)) {
         logger.debug("trying to retrieve range: {}", range);
         return partialFileResponse(getFile(mediaPackageID, mediaPackageElementID), getMimeType(fileName),
                 Optional.of(fileName), range).tag(md5).build();
 
       } else {
         // No If-Non-Match header provided, or the file changed in the meantime
         return fileResponse(getFile(mediaPackageID, mediaPackageElementID), getMimeType(fileName),
                 Optional.of(fileName)).tag(md5).build();
       }
     } catch (Exception e) {
       logger.error("Unable to provide element '{}' from mediapackage '{}'", mediaPackageElementID,
               mediaPackageID, e);
       return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
     }
   }
 
   @GET
   @Path(WorkingFileRepository.COLLECTION_PATH_PREFIX + "{collectionId}/{fileName}")
   @RestQuery(name = "getFromCollection", description = "Gets the file from the working repository under /collectionId/filename", returnDescription = "The file", pathParameters = {
           @RestParameter(name = "collectionId", description = "the collection identifier", isRequired = true, type = STRING),
           @RestParameter(name = "fileName", description = "the file name", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_OK, description = "File returned"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "Not found") })
   public Response restGetFromCollection(@PathParam("collectionId") String collectionId,
           @PathParam("fileName") String fileName) throws NotFoundException {
     return fileResponse(getFileFromCollection(collectionId, fileName), getMimeType(fileName), Optional.of(fileName))
             .build();
   }
 
   @GET
   @Path("/collectionuri/{collectionID}/{fileName}")
   @RestQuery(name = "getUriFromCollection", description = "Gets the URL for a file to be stored in the working repository under /collectionId/filename", returnDescription = "The url to this file", pathParameters = {
           @RestParameter(name = "collectionID", description = "the collection identifier", isRequired = true, type = STRING),
           @RestParameter(name = "fileName", description = "the file name", isRequired = true, type = STRING) }, responses = { @RestResponse(responseCode = SC_OK, description = "URL returned") })
   public Response restGetCollectionUri(@PathParam("collectionID") String collectionId,
           @PathParam("fileName") String fileName) {
     URI uri = this.getCollectionURI(collectionId, fileName);
     return Response.ok(uri.toString()).build();
   }
 
   @GET
   @Path("/uri/{mediaPackageID}/{mediaPackageElementID}")
   @RestQuery(name = "getUri", description = "Gets the URL for a file to be stored in the working repository under /mediaPackageID", returnDescription = "The url to this file", pathParameters = {
           @RestParameter(name = "mediaPackageID", description = "the mediaPackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "mediaPackageElementID", description = "the mediaPackage element identifier", isRequired = true, type = STRING) }, responses = { @RestResponse(responseCode = SC_OK, description = "URL returned") })
   public Response restGetUri(@PathParam("mediaPackageID") String mediaPackageID,
           @PathParam("mediaPackageElementID") String mediaPackageElementID) {
     URI uri = this.getURI(mediaPackageID, mediaPackageElementID);
     return Response.ok(uri.toString()).build();
   }
 
   @GET
   @Path("/uri/{mediaPackageID}/{mediaPackageElementID}/{fileName}")
   @RestQuery(name = "getUriWithFilename", description = "Gets the URL for a file to be stored in the working repository under /mediaPackageID", returnDescription = "The url to this file", pathParameters = {
           @RestParameter(name = "mediaPackageID", description = "the mediaPackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "mediaPackageElementID", description = "the mediaPackage element identifier", isRequired = true, type = STRING),
           @RestParameter(name = "fileName", description = "the filename", isRequired = true, type = STRING) }, responses = { @RestResponse(responseCode = SC_OK, description = "URL returned") })
   public Response restGetUri(@PathParam("mediaPackageID") String mediaPackageID,
           @PathParam("mediaPackageElementID") String mediaPackageElementID, @PathParam("fileName") String fileName) {
     URI uri = this.getURI(mediaPackageID, mediaPackageElementID, fileName);
     return Response.ok(uri.toString()).build();
   }
 
   @SuppressWarnings("unchecked")
   @GET
   @Produces(MediaType.APPLICATION_JSON)
   @Path("/list/{collectionId}.json")
   @RestQuery(name = "filesInCollection", description = "Lists files in a collection", returnDescription = "Links to the URLs in a collection", pathParameters = { @RestParameter(name = "collectionId", description = "the collection identifier", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_OK, description = "URLs returned"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "Collection not found") })
   public Response restGetCollectionContents(@PathParam("collectionId") String collectionId) throws NotFoundException {
     URI[] uris = super.getCollectionContents(collectionId);
     JSONArray jsonArray = new JSONArray();
     for (URI uri : uris) {
       jsonArray.add(uri.toString());
     }
     return Response.ok(jsonArray.toJSONString()).build();
   }
 
   @POST
   @Path("/copy/{fromCollection}/{fromFileName}/{toMediaPackage}/{toMediaPackageElement}/{toFileName}")
   @RestQuery(name = "copy", description = "Copies a file from a collection to a mediapackage", returnDescription = "A URL to the copied file", pathParameters = {
           @RestParameter(name = "fromCollection", description = "the collection identifier hosting the source", isRequired = true, type = STRING),
           @RestParameter(name = "fromFileName", description = "the source file name", isRequired = true, type = STRING),
           @RestParameter(name = "toMediaPackage", description = "the destination mediapackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "toMediaPackageElement", description = "the destination mediapackage element identifier", isRequired = true, type = STRING),
           @RestParameter(name = "toFileName", description = "the destination file name", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_OK, description = "URL returned"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "File to copy not found") })
   public Response restCopyTo(@PathParam("fromCollection") String fromCollection,
           @PathParam("fromFileName") String fromFileName, @PathParam("toMediaPackage") String toMediaPackage,
           @PathParam("toMediaPackageElement") String toMediaPackageElement, @PathParam("toFileName") String toFileName)
           throws NotFoundException {
     try {
       URI uri = super.copyTo(fromCollection, fromFileName, toMediaPackage, toMediaPackageElement, toFileName);
       return Response.ok().entity(uri.toString()).build();
     } catch (IOException e) {
       logger.error("Unable to copy file '{}' from collection '{}' to mediapackage {}/{}",
               fromFileName, fromCollection, toMediaPackage, toMediaPackageElement, e);
       return Response.serverError().entity(e.getMessage()).build();
     }
   }
 
   @POST
   @Path("/move/{fromCollection}/{fromFileName}/{toMediaPackage}/{toMediaPackageElement}/{toFileName}")
   @RestQuery(name = "move", description = "Moves a file from a collection to a mediapackage", returnDescription = "A URL to the moved file", pathParameters = {
           @RestParameter(name = "fromCollection", description = "the collection identifier hosting the source", isRequired = true, type = STRING),
           @RestParameter(name = "fromFileName", description = "the source file name", isRequired = true, type = STRING),
           @RestParameter(name = "toMediaPackage", description = "the destination mediapackage identifier", isRequired = true, type = STRING),
           @RestParameter(name = "toMediaPackageElement", description = "the destination mediapackage element identifier", isRequired = true, type = STRING),
           @RestParameter(name = "toFileName", description = "the destination file name", isRequired = true, type = STRING) }, responses = {
           @RestResponse(responseCode = SC_OK, description = "URL returned"),
           @RestResponse(responseCode = SC_NOT_FOUND, description = "File to move not found") })
   public Response restMoveTo(@PathParam("fromCollection") String fromCollection,
           @PathParam("fromFileName") String fromFileName, @PathParam("toMediaPackage") String toMediaPackage,
           @PathParam("toMediaPackageElement") String toMediaPackageElement, @PathParam("toFileName") String toFileName)
           throws NotFoundException {
     try {
       URI uri = super.moveTo(fromCollection, fromFileName, toMediaPackage, toMediaPackageElement, toFileName);
       return Response.ok().entity(uri.toString()).build();
     } catch (IOException e) {
       logger.error("Unable to move file '{}' from collection '{}' to mediapackage {}/{}",
               fromFileName, fromCollection, toMediaPackage, toMediaPackageElement, e);
       return Response.serverError().entity(e.getMessage()).build();
     }
   }
 
   @SuppressWarnings("unchecked")
   @GET
   @Produces(MediaType.APPLICATION_JSON)
   @Path("storage")
   @RestQuery(name = "storage", description = "Returns a report on the disk usage and availability", returnDescription = "Plain text containing the report", responses = { @RestResponse(responseCode = SC_OK, description = "Report returned") })
   public Response restGetTotalStorage() {
     long total = this.getTotalSpace().get();
     long usable = this.getUsableSpace().get();
     long used = this.getUsedSpace().get();
     String summary = this.getDiskSpace();
     JSONObject json = new JSONObject();
     json.put("size", total);
     json.put("usable", usable);
     json.put("used", used);
     json.put("summary", summary);
     return Response.ok(json.toJSONString()).build();
   }
 
   @GET
   @Produces(MediaType.TEXT_PLAIN)
   @Path("/baseUri")
   @RestQuery(name = "baseuri", description = "Returns a base URI for this repository", returnDescription = "Plain text containing the base URI", responses = { @RestResponse(responseCode = SC_OK, description = "Base URI returned") })
   public Response restGetBaseUri() {
     return Response.ok(super.getBaseUri().toString()).build();
   }
 }