package com.google.sitebricks.transport;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.ValidationException;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.Multimap;
import com.google.inject.Provider;
import com.google.inject.TypeLiteral;
import com.google.sitebricks.headless.Request;
import com.google.sitebricks.validation.SitebricksValidator;
public class MultiPartRequest implements Request<FileItem> {
private final HttpServletRequest httpServletRequest;
private SitebricksValidator validator;
private Multimap<String, FileItem> params;
@Inject
public MultiPartRequest(Provider<HttpServletRequest> requestProvider, SitebricksValidator validator) throws FileUploadException {
this.httpServletRequest = requestProvider.get();
this.validator = validator;
this.params = params(this.httpServletRequest);
}
@Override
public <E> RequestRead<E> read(Class<E> type) {
throw new UnsupportedOperationException();
}
@Override
public <E> RequestRead<E> read(TypeLiteral<E> type) {
throw new UnsupportedOperationException();
}
@Override
public void readTo(OutputStream out) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public Multimap<String, String> headers() {
throw new UnsupportedOperationException();
}
@Override
public Multimap<String, FileItem> params() {
return this.params;
}
@Override
public Multimap<String, String> matrix() {
throw new UnsupportedOperationException();
}
@Override
public String matrixParam(String name) {
throw new UnsupportedOperationException();
}
@Override
public FileItem param(String name) {
throw new UnsupportedOperationException();
}
@Override
public String header(String name) {
throw new UnsupportedOperationException();
}
@Override
public String uri() {
throw new UnsupportedOperationException();
}
@Override
public String path() {
throw new UnsupportedOperationException();
}
@Override
public String context() {
throw new UnsupportedOperationException();
}
@Override
public String method() {
throw new UnsupportedOperationException();
}
@Override
public void validate(Object object) {
Set<? extends ConstraintViolation<?>> cvs = validator.validate(object);
if ((cvs != null) && (! cvs.isEmpty())) {
throw new ValidationException(new ConstraintViolationException((Set<ConstraintViolation<?>>) cvs));
}
}
private Multimap<String, FileItem> params(HttpServletRequest request) throws FileUploadException {
ImmutableMultimap.Builder<String, FileItem> builder = ImmutableMultimap.builder();
FileItemFactory fileItemFactory = new DiskFileItemFactory(1000, null);
ServletFileUpload upload = new ServletFileUpload(fileItemFactory);
upload.setHeaderEncoding(request.getCharacterEncoding());
List<FileItem> items = upload.parseRequest(request);
Iterator<FileItem> iter = items.iterator();
while (iter.hasNext()) {
FileItem fileItem = (FileItem) iter.next();
builder.put(fileItem.getFieldName(), fileItem);
}
return builder.build();
}
}