/*
* Copyright 2013 Objectos, Fábrica de Software LTDA.
*
* 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.
*/
package br.com.objectos.way.upload;
import static com.google.common.collect.Lists.newArrayList;
import java.io.File;
import java.util.List;
import br.com.objectos.comuns.sitebricks.BaseUrl;
import br.com.objectos.comuns.sitebricks.WebSession;
import br.com.objectos.comuns.web.upload.PotentialFile;
import br.com.objectos.comuns.web.upload.UploadRequest;
import br.com.objectos.comuns.web.upload.UploadRequestException;
import br.com.objectos.comuns.web.upload.UploadRequests;
import br.com.objectos.comuns.web.upload.UploadedFile;
import br.com.objectos.comuns.web.upload.UploadedForm;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import com.google.inject.Inject;
/**
* @author marcio.endo@objectos.com.br (Marcio Endo)
*/
class UploadsGuice implements Uploads {
private final BaseUrl baseUrl;
private final UploadRequests requests;
private final WebSession session;
private final UploadServer uploadServer;
@Inject
public UploadsGuice(BaseUrl baseUrl,
UploadRequests requests,
WebSession session,
UploadServer uploadServer) {
this.baseUrl = baseUrl;
this.requests = requests;
this.session = session;
this.uploadServer = uploadServer;
}
@Override
public FirstFromRequest getFirstFromRequest() {
UploadRequest request = requests.get();
Iterable<PotentialFile> potentials;
potentials = request.getPotentialFiles();
ToUploadedFile closure = new ToUploadedFile();
Iterable<UploadedFile> lazyFiles;
lazyFiles = Iterables.transform(potentials, closure);
List<UploadedFile> files;
files = ImmutableList.copyOf(lazyFiles);
boolean hasErrors = closure.hasErrors();
boolean hasFiles = !files.isEmpty();
UploadedForm form = request.getUploadedForm();
UploadCtx ctx = new UploadCtx(baseUrl, form, session, uploadServer);
if (hasFiles && !hasErrors) {
UploadedFile file = files.get(0);
return new FirstFromRequestValid(ctx, file);
} else {
List<UploadRequestException> exceptions = closure.getExceptions();
return new FirstFromRequestInvalid(ctx, exceptions);
}
}
@Override
public ReprocessFile reprocessFile(File file) {
UploadedForm form = EmptyUploadedForm.INSTANCE;
UploadCtx ctx = new UploadCtx(baseUrl, form, session, uploadServer);
return new ReprocessFileValid(ctx, file);
}
@Override
public boolean isRunning(Object key) {
return uploadServer.isRunning(key);
}
private class ToUploadedFile implements Function<PotentialFile, UploadedFile> {
private final List<UploadRequestException> exceptions = newArrayList();
@Override
public UploadedFile apply(PotentialFile input) {
try {
return input.saveAndGet();
} catch (UploadRequestException e) {
exceptions.add(e);
return null;
}
}
public List<UploadRequestException> getExceptions() {
return exceptions;
}
public boolean hasErrors() {
return !exceptions.isEmpty();
}
}
private static enum EmptyUploadedForm implements UploadedForm {
INSTANCE;
@Override
public String get(String key) {
return null;
}
}
}