Package com.elasticinbox.rest.v2

Source Code of com.elasticinbox.rest.v2.SingleMessageResource

/**
* Copyright (c) 2011-2012 Optimax Software Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
*  * Redistributions of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*  * Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
*  * Neither the name of Optimax Software, ElasticInbox, nor the names
*    of its contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

package com.elasticinbox.rest.v2;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;

import javax.mail.internet.MimeUtility;
import javax.ws.rs.DELETE;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.elasticinbox.common.utils.Assert;
import com.elasticinbox.common.utils.JSONUtils;
import com.elasticinbox.core.DAOFactory;
import com.elasticinbox.core.IllegalLabelException;
import com.elasticinbox.core.MessageDAO;
import com.elasticinbox.core.MessageModification;
import com.elasticinbox.core.OverQuotaException;
import com.elasticinbox.core.blob.BlobDataSource;
import com.elasticinbox.core.message.MimeParser;
import com.elasticinbox.core.message.MimeParserException;
import com.elasticinbox.core.message.id.MessageIdBuilder;
import com.elasticinbox.core.model.Mailbox;
import com.elasticinbox.core.model.Marker;
import com.elasticinbox.core.model.Message;
import com.elasticinbox.core.model.MimePart;
import com.elasticinbox.rest.BadRequestException;

/**
* This JAX-RS resource is responsible for manipulating specific message.
*
* @author Rustam Aliyev
* @see MessageResource
*/
@Path("{domain}/{user}/mailbox/message/{messageid}")
public final class SingleMessageResource
{
  private final MessageDAO messageDAO;

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

  @Context UriInfo uriInfo;

  public SingleMessageResource() {
    DAOFactory dao = DAOFactory.getDAOFactory();
    messageDAO = dao.getMessageDAO();
  }

  /**
   * Get parsed message contents (headers and body)
   *
   * @param account
   * @param messageId
   * @param labelId
   * @param markAsSeen Automatically mark as SEEN
   * @param getAdjacentIds Get prev/next message IDs in given label
   * @return
   */
  @GET
  @Produces(MediaType.APPLICATION_JSON)
  public Response getMessage(
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") final UUID messageId,
      @QueryParam("label") final Integer labelId,
      @QueryParam("markseen") @DefaultValue("false") final boolean markAsSeen,
      @QueryParam("adjacent") @DefaultValue("false") final boolean getAdjacentIds)
  {
    Mailbox mailbox = new Mailbox(user, domain);

    byte[] response;
    Map<String, Object> result = new HashMap<String, Object>(3);

    try {
      Message message = messageDAO.getParsed(mailbox, messageId);
      result.put("message", message);

      // automatically mark as seen if requested and not seen yet
      if (markAsSeen && !message.getMarkers().contains(Marker.SEEN))
      {
        messageDAO.modify(mailbox, messageId,
            new MessageModification.Builder().addMarker(Marker.SEEN).build());
      }

      // get adjacent message ids (prev/next)
      if (getAdjacentIds)
      {
        Assert.notNull(labelId, "Adjacent messages require label.");

        // fetch next message ID
        List<UUID> ids = messageDAO.getMessageIds(mailbox, labelId, messageId, 2, true);
        if (ids.size() == 2) {
          result.put("next", ids.get(1));
        }

        // fetch previous message ID
        ids = messageDAO.getMessageIds(mailbox, labelId, messageId, 2, false);
        if (ids.size() == 2) {
          result.put("prev", ids.get(1));
        }
      }

      // get message as JSON
      response = JSONUtils.fromObject(result);

    } catch (IllegalArgumentException iae) {
      throw new BadRequestException(iae.getMessage());
    } catch (Exception e) {
      logger.warn("Internal Server Error: ", e);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    }

    return Response.ok(response, MediaType.APPLICATION_JSON).build();
  }

  /**
   * Get original message contents
   *
   * @param account
   * @param messageId
   * @return
   */
  @GET
  @Path("raw")
  @Produces(MediaType.TEXT_PLAIN)
  public Response getRawMessage(
      @HeaderParam(HttpHeaders.ACCEPT_ENCODING) String acceptEncoding,
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") final UUID messageId)
  {
    Mailbox mailbox = new Mailbox(user, domain);

    Response response;

    try {
      BlobDataSource blobDS = messageDAO.getRaw(mailbox, messageId);

      if (acceptEncoding != null && acceptEncoding.contains("deflate")
          && blobDS.isCompressed())
      {
        response = Response
            .ok(blobDS.getInputStream(), MediaType.TEXT_PLAIN)
            .header(HttpHeaders.CONTENT_ENCODING, "deflate").build();
      } else {
        response = Response.ok(blobDS.getUncompressedInputStream(),
            MediaType.TEXT_PLAIN).build();
      }
    } catch (IllegalArgumentException iae) {
      throw new BadRequestException(iae.getMessage());
    } catch (Exception e) {
      logger.warn("Internal Server Error: ", e);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    }

    return response;
  }

  /**
   * Redirect to original message blob URI
   *
   * @param account
   * @param messageId
   * @return
   */
  @GET
  @Path("url")
  public Response getMessageUrl(
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") final UUID messageId)
  {
    Mailbox mailbox = new Mailbox(user, domain);
    URI uri = null;

    try {
      Message message = messageDAO.getParsed(mailbox, messageId);
      uri = message.getLocation();
      Assert.notNull(uri, "No source message");
    } catch (IllegalArgumentException iae) {
      throw new BadRequestException(iae.getMessage());
    } catch (Exception e) {
      logger.warn("Internal Server Error: ", e);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    }

    return Response.temporaryRedirect(uri).build();
  }

  /**
   * Get message part by MIME Part ID
   *
   * @param account
   * @param messageId
   * @param partId
   * @return
   * @throws IOException
   */
  @GET
  @Path("{partid: [0-9]+(\\.[0-9]+)*}")
  @Produces(MediaType.APPLICATION_OCTET_STREAM)
  public Response getMessagePart(
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") final UUID messageId,
      @PathParam("partid") final String partId)
      throws IOException
  {
    Mailbox mailbox = new Mailbox(user, domain);
    InputStream rawIn = null;
    InputStream partIn = null;
    MimePart part = null;

    try {
      rawIn = messageDAO.getRaw(mailbox, messageId).getUncompressedInputStream();
      MimeParser mimeParser = new MimeParser();
      mimeParser.parse(rawIn);
      part = mimeParser.getMessage().getPart(partId);
      partIn = mimeParser.getInputStreamByPartId(partId);
      rawIn.close();
    } catch (IllegalArgumentException iae) {
      throw new BadRequestException(iae.getMessage());
    } catch (Exception e) {
      logger.warn("Internal Server Error: ", e);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    } finally {
      if (rawIn != null) rawIn.close();
    }

    return Response
        .ok(partIn, part.getMimeType())
        .header("Content-Disposition", filenameToContentDisposition(part.getFileName()))
        .build();
  }

  /**
   * Get message part by Content ID
   *
   * @param account
   * @param messageId
   * @param contentId
   * @return
   * @throws IOException
   */
  @GET
  @Path("<{contentid}>")
  @Produces(MediaType.APPLICATION_OCTET_STREAM)
  public Response getMessagePartByContentId(
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") final UUID messageId,
      @PathParam("contentid") final String contentId)
      throws IOException
  {
    Mailbox mailbox = new Mailbox(user, domain);
    InputStream rawIn = null;
    InputStream partIn = null;
    MimePart part = null;

    try {
      rawIn = messageDAO.getRaw(mailbox, messageId).getUncompressedInputStream();
      MimeParser mimeParser = new MimeParser();
      mimeParser.parse(rawIn);
      part = mimeParser.getMessage().getPartByContentId(contentId);
      partIn = mimeParser.getInputStreamByContentId(contentId);
      rawIn.close();
    } catch (IllegalArgumentException iae) {
      throw new BadRequestException(iae.getMessage());
    } catch (Exception e) {
      logger.info("Internal Server Error: ", e);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    } finally {
      if (rawIn != null) rawIn.close();
    }

    return Response
        .ok(partIn, part.getMimeType())
        .header("Content-Disposition", filenameToContentDisposition(part.getFileName()))
        .build();
    }

  /**
   * Update existing message contents, set labels and markers
   *
   * @param account
   * @param messageId
   * @param file
   * @return
   */
  @POST
  @Produces(MediaType.APPLICATION_JSON)
  public Response updateMessage(
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") final UUID messageId,
      File file)
  {
    Mailbox mailbox = new Mailbox(user, domain);

    // generate new UUID
    UUID newMessageId = new MessageIdBuilder().build();

    try {
      Message oldMessage = messageDAO.getParsed(mailbox, messageId);

      FileInputStream in = new FileInputStream(file);
      MimeParser parser = new MimeParser();

      // parse message
      parser.parse(in);
      Message newMessage = parser.getMessage();
      newMessage.setSize(file.length()); // update message size
      in.close();

      // add labels to message
      for(Integer label : oldMessage.getLabels()) {
        newMessage.addLabel(label);
      }

      // add markers to message
      for(Marker marker : oldMessage.getMarkers()) {
        newMessage.addMarker(marker);
      }

      // store message
      in = new FileInputStream(file);
      messageDAO.put(mailbox, newMessageId, newMessage, in);
      in.close();

      // delete old message
      messageDAO.delete(mailbox, messageId);
    } catch (MimeParserException mpe) {
      logger.error("Unable to parse message: ", mpe);
      throw new BadRequestException("Parsing error. Invalid MIME message.");
    } catch (OverQuotaException oqe) {
      throw new WebApplicationException(Response.Status.NOT_ACCEPTABLE);
    } catch (IOException ioe) {
      logger.error("Unable to read message stream: ", ioe);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    } catch (IllegalArgumentException e) {
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    } finally {
      if (file.exists()) {
        file.delete();
      }
    }

    // build response
    URI messageUri = uriInfo.getAbsolutePathBuilder()
        .path(newMessageId.toString()).build();

    String responseJson = new StringBuilder("{\"id\":\"").append(newMessageId)
        .append("\"}").toString();

    return Response.created(messageUri).entity(responseJson).build();
  }

  /**
   * Modify message labels and markers
   *
   * @param account
   * @param messageId
   * @param addLabels
   * @param removeLabels
   * @param addMarkers
   * @param removeMarkers
   * @return
   */
  @PUT
  @Produces(MediaType.APPLICATION_JSON)
  public Response modifyMessage(
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") UUID messageId,
      @QueryParam("addlabel") Set<Integer> addLabels,
      @QueryParam("removelabel") Set<Integer> removeLabels,
      @QueryParam("addmarker") Set<Marker> addMarkers,
      @QueryParam("removemarker") Set<Marker> removeMarkers)
  {
    Mailbox mailbox = new Mailbox(user, domain);

    try {
      MessageModification modification = new MessageModification.Builder()
          .addLabels(addLabels).removeLabels(removeLabels)
          .addMarkers(addMarkers).removeMarkers(removeMarkers)
          .build();

      messageDAO.modify(mailbox, messageId, modification);
    } catch (IllegalLabelException ile) {
      throw new BadRequestException(ile.getMessage());
    } catch (Exception e) {
      logger.warn("Internal Server Error: ", e);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    }

    return Response.noContent().build();
  }

  /**
   * Delete message
   *
   * @param account
   * @param messageId
   * @return
   */
  @DELETE
  @Produces(MediaType.APPLICATION_JSON)
  public Response deleteMessage(
      @PathParam("user") final String user,
      @PathParam("domain") final String domain,
      @PathParam("messageid") UUID messageId)
  {
    Mailbox mailbox = new Mailbox(user, domain);

    try {
      messageDAO.delete(mailbox, messageId);
    } catch (Exception e) {
      logger.warn("Internal Server Error: ", e);
      throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
    }

    return Response.noContent().build();
    }

  /**
   * Encodes filename and produces string for content disposition value
   *
   * @param fileName
   * @return
   * @throws UnsupportedEncodingException
   */
  private static String filenameToContentDisposition(String fileName) throws UnsupportedEncodingException
  {
    if(fileName != null) {
      // TODO: For IE, URLEncoder.encode(filename, "utf-8") should be used instead
      return new StringBuilder("attachment; filename=\"")
          .append(MimeUtility.encodeWord(fileName, "utf-8", "Q"))
          .append("\"").toString();
    } else {
      // filename is optional, see RFC2138
      return "attachment;";
    }
  }

}
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