package com.epam.wilma.webapp.service.command;
/*==========================================================================
Copyright 2013-2017 EPAM Systems
This file is part of Wilma.
Wilma is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Wilma is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Wilma. If not, see <http://www.gnu.org/licenses/>.
===========================================================================*/
import java.util.LinkedHashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.epam.wilma.domain.stubconfig.StubDescriptor;
import com.epam.wilma.router.command.StubDescriptorModificationCommand;
import com.epam.wilma.webapp.helper.UrlAccessLogMessageAssembler;
/**
* This class does the selected moving in the map of stub descriptors.
* @author Tibor_Kovacs
*
*/
public class ChangeOrderCommand implements StubDescriptorModificationCommand {
private final Logger logger = LoggerFactory.getLogger(ChangeOrderCommand.class);
private final int direction;
private final String groupName;
private final HttpServletRequest request;
private final UrlAccessLogMessageAssembler urlAccessLogMessageAssembler;
/**
* Creates a new ChangeOrderCommand, that will do the given changes.
* @param direction is the direction of moving.
* @param groupName is key of searched stub configuration.
* @param request is only needed for {@link UrlAccessLogMessageAssembler}
* @param urlAccessLogMessageAssembler is the logger
*/
public ChangeOrderCommand(final int direction, final String groupName, final HttpServletRequest request, final UrlAccessLogMessageAssembler urlAccessLogMessageAssembler) {
this.direction = direction;
this.groupName = groupName;
this.request = request;
this.urlAccessLogMessageAssembler = urlAccessLogMessageAssembler;
}
@Override
public Map<String, StubDescriptor> modify(Map<String, StubDescriptor> stubDescriptors) {
Map<String, StubDescriptor> updated = new LinkedHashMap<>(stubDescriptors);
updated = doTheMoving(direction, groupName, stubDescriptors, request);
return updated;
}
private Map<String, StubDescriptor> doTheMoving(final int direction, final String groupName,
final Map<String, StubDescriptor> oldStubDescriptors, final HttpServletRequest request) {
Map<String, StubDescriptor> result;
if (direction < 0) {
result = moveStubDescriptorDownByOne(groupName, oldStubDescriptors, request);
} else {
result = moveStubDescriptorUpByOne(groupName, oldStubDescriptors, request);
}
return result;
}
private Map<String, StubDescriptor> moveStubDescriptorUpByOne(final String groupname, final Map<String, StubDescriptor> descriptors,
final HttpServletRequest request) {
Map<String, StubDescriptor> result = new LinkedHashMap<>();
String[] keys = descriptors.keySet().toArray(new String[descriptors.size()]);
if (keys != null && keys[0].equals(groupname)) {
result = descriptors;
} else {
StubDescriptor selectedDescriptor = descriptors.get(groupname);
if (selectedDescriptor == null) {
result = descriptors;
} else {
for (int i = 0; i < keys.length; i++) {
int j = i + 1;
if ((j < keys.length) && (keys[j].equals(groupname))) {
result.put(groupname, selectedDescriptor);
result.put(keys[i], descriptors.get(keys[i]));
} else {
result.put(keys[i], descriptors.get(keys[i]));
}
}
logger.info(urlAccessLogMessageAssembler.assembleMessage(request, groupname + " has moved to UP."));
}
}
return result;
}
private Map<String, StubDescriptor> moveStubDescriptorDownByOne(final String groupname, final Map<String, StubDescriptor> descriptors,
final HttpServletRequest request) {
Map<String, StubDescriptor> result = new LinkedHashMap<>();
String[] keys = descriptors.keySet().toArray(new String[descriptors.size()]);
if (keys != null && keys[descriptors.size() - 1].equals(groupname)) {
result = descriptors;
} else {
StubDescriptor selectedDescriptor = descriptors.get(groupname);
if (selectedDescriptor == null) {
result = descriptors;
} else {
for (int i = 0; i < keys.length; i++) {
int j = i + 1;
if ((j < keys.length) && (keys[i].equals(groupname))) {
result.put(keys[j], descriptors.get(keys[j]));
result.put(groupname, selectedDescriptor);
} else {
result.put(keys[i], descriptors.get(keys[i]));
}
}
logger.info(urlAccessLogMessageAssembler.assembleMessage(request, groupname + " has moved to DOWN."));
}
}
return result;
}
public String getGroupName() {
return groupName;
}
public HttpServletRequest getRequest() {
return request;
}
public int getDirection() {
return direction;
}
}