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/***********************************************************************************************************************
 *
 * blueBill Mobile - Android - open source birding
 * Copyright (C) 2009-2011 by Tidalwave s.a.s. (http://www.tidalwave.it)
 *
 ***********************************************************************************************************************
 *
 * Licensed under the Apache 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://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://bluebill.tidalwave.it/mobile
 * SCM: https://java.net/hg/bluebill-mobile~android-src
 *
 **********************************************************************************************************************/
package it.tidalwave.bluebill.mobile.android.document;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;
import javax.inject.Provider;
import java.util.Collection;
import java.io.File;
import java.io.IOException;
import it.tidalwave.netbeans.util.Locator;
import it.tidalwave.mobile.io.FileSystem;
import it.tidalwave.mobile.io.MasterFileSystem;
import it.tidalwave.semantic.document.AttachmentZipGenerator;
import it.tidalwave.semantic.document.Sendable;
import it.tidalwave.semantic.document.Document;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import it.tidalwave.bluebill.mobile.android.observation.AndroidObservationsViewController;
import it.tidalwave.util.NotFoundException;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import static org.openide.util.NbBundle.*;
import static it.tidalwave.semantic.document.Document.*;

/***********************************************************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 **********************************************************************************************************************/
@Immutable @RequiredArgsConstructor @Slf4j
/* package */ class AndroidDocumentSender implements Sendable
  {
    private static final Class _ = AndroidObservationsViewController.class;
    
    private static final String ATTACHMENTS_FILE_NAME = "spool/attachments.zip";

    private final Document document;
    
    @Nonnull
    private Provider masterFileSystem = Locator.createProviderFor(MasterFileSystem.class);

    /*******************************************************************************************************************
     *
     * {@inheritDoc}
     *
     ******************************************************************************************************************/
    public void sendTo (final @Nonnull Object context, final @Nonnull Collection recipients)
      throws IOException 
      {
        log.info("sendTo({}) - {}", recipients, document);

        // It seems that using the internal file system it doesn't work
        final FileSystem fileSystem = masterFileSystem.get().getExternalFileSystem();
        
        final String[] recipientsAsArray = recipients.toArray(new String[0]);
        final Intent sendIntent = new Intent(Intent.ACTION_SEND);
        sendIntent.putExtra(Intent.EXTRA_EMAIL, recipientsAsArray);
        sendIntent.putExtra(Intent.EXTRA_PHONE_NUMBER, recipientsAsArray);
        
        try
          {
            sendIntent.putExtra(Intent.EXTRA_SUBJECT, document.get(SUBJECT));
            sendIntent.putExtra(Intent.EXTRA_TEXT, document.get(BODY));
            sendIntent.setType(document.get(MIME_TYPE));
          }
        catch (NotFoundException e)
          {
            throw new RuntimeException(e);  
          }

        if (!document.getMultiple(ATTACHMENT).isEmpty())
          {
            final File attachmentFile = fileSystem.getFile(ATTACHMENTS_FILE_NAME);
            log.debug(">>>> there are attachments, generating a zipfile at {}...", attachmentFile);
            document.accept(new AttachmentZipGenerator(attachmentFile));
            sendIntent.setType("application/zip");
            sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(attachmentFile));
            sendIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            // FIXME: how to delete after sent? We could listen for Activity completion notification,
            // but the user might decide to store the document as draft.
          }

        ((Activity)context).startActivity(Intent.createChooser(sendIntent, getMessage(_, "pickAService")));
      }    
  }