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/*
* This program is a part of the IoTa project.
*
* Copyright © 2008-2013 Université de Caen Basse-Normandie, GREYC
*
* This program 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.
*
* This program 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.
* <http://www.gnu.org/licenses/>
*
* See AUTHORS for a list of contributors.
*/
package fr.unicaen.iota.application.operations;

import fr.unicaen.iota.nu.ONSOperation;
import fr.unicaen.iota.tau.model.Identity;
import java.rmi.RemoteException;
import java.util.*;
import java.util.Map.Entry;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.fosstrak.epcis.model.AggregationEventType;
import org.fosstrak.epcis.model.EPC;
import org.fosstrak.epcis.model.EPCISEventType;
import org.fosstrak.epcis.model.TransactionEventType;

/**
*
*/
public class TraceEPC {

private final Identity identity;
private final String pksFilename;
private final String pksPassword;
private final String trustPksFilename;
private final String trustPksPassword;
private final ONSOperation onsOperation;
private static final Log log = LogFactory.getLog(TraceEPC.class);

public TraceEPC(Identity identity, String pksFilename, String pksPassword, String trustPksFilename, String trustPksPassword) {
this.identity = identity;
this.pksFilename = pksFilename;
this.pksPassword = pksPassword;
this.trustPksFilename = trustPksFilename;
this.trustPksPassword = trustPksPassword;
this.onsOperation = new ONSOperation();
}

public List<EPCISEventType> traceEPC(String EPC) throws RemoteException {
log.trace("EPC = " + EPC);
return traceEPCAux(EPC, new HashMap<String, String>());
}

public Map<String, List<EPCISEventType>> traceEPCbyEPCIS(String EPC) throws RemoteException {
log.trace("EPC = " + EPC);
return traceEPCAuxByEPCIS(EPC, new HashMap<String, String>());
}

public List<EPCISEventType> filteredTrace(String EPC, Map<String, String> filters) throws RemoteException {
log.trace("Filters = " + filters);
return traceEPCAux(EPC, filters);
}

public Map<String, List<EPCISEventType>> filteredTracebyEPCIS(String EPC, Map<String, String> filters) throws RemoteException {
log.trace("Filters = " + filters);
return traceEPCAuxByEPCIS(EPC, filters);
}

private List<EPCISEventType> traceEPCAux(String EPC, Map<String, String> filters) throws RemoteException {
log.trace("[TRACE EPC]: " + EPC);
log.trace("Get Referent ds address");
String dsAddress = onsOperation.getReferentIDedDS(EPC);
if (dsAddress == null) {
log.warn("Unable to retreive referent ds address for this epc code");
return new ArrayList<EPCISEventType>();
} else {
log.trace("referent ds address found: " + dsAddress);
}
log.trace("Start discover");
DiscoveryOperation dsOp = new DiscoveryOperation(identity, dsAddress, pksFilename, pksPassword, trustPksFilename, trustPksPassword);
return traceEPC(dsOp, EPC, filters);
}

private Map<String, List<EPCISEventType>> traceEPCAuxByEPCIS(String EPC, Map<String, String> filters) throws RemoteException {
log.trace("[TRACE EPC BY EPCIS]: " + EPC);
log.trace("Get Referent ds address");
String dsAddress = onsOperation.getReferentIDedDS(EPC);
if (dsAddress == null) {
log.warn("Unable to retreive referent ds address for this epc code");
return new HashMap<String, List<EPCISEventType>>();
} else {
log.trace("referent ds address found: " + dsAddress);
}
log.trace("Start discover");
DiscoveryOperation dsOp = new DiscoveryOperation(identity, dsAddress, pksFilename, pksPassword, trustPksFilename, trustPksPassword);
return traceEPCByEPCIS(dsOp, EPC, filters);
}

private List<EPCISEventType> traceEPC(DiscoveryOperation dsOp, String EPC, Map<String, String> filters) throws RemoteException {
List<EPCISEventType> eventList = new ArrayList<EPCISEventType>();
for (String EPCIS_SERVICE_ADDRESS : dsOp.discover(EPC)) {
EpcisOperation epcisOperation = null;
try {
epcisOperation = new EpcisOperation(identity, EPCIS_SERVICE_ADDRESS, pksFilename, pksPassword, trustPksFilename, trustPksPassword);
} catch (Exception ex) {
epcisOperation = null;
String msg = "Unable to create service proxy port";
log.warn(msg, ex);
throw new RemoteException(msg, ex);
}
Collection<EPCISEventType> list = epcisOperation.getObjectEventFromEPC(EPC, filters);
eventList.addAll(list);
list = epcisOperation.getQuantityEventFromEPC(EPC, filters);
eventList.addAll(list);
log.trace("nbr epc events: " + list.size());
Collection<EPCISEventType> children = epcisOperation.getAggregationEventFromEPC(EPC, filters);
eventList.addAll(children);
log.trace("nbr child events: " + children.size());
for (EPCISEventType o : children) {
AggregationEventType event = (AggregationEventType) o;
for (EPC childEpc : event.getChildEPCs().getEpc()) {
log.trace("new traceEPC: " + childEpc.getValue());
eventList.addAll(traceEPCAux(childEpc.getValue(), filters));
}
}
Collection<EPCISEventType> trans = epcisOperation.getTransactionEventFromEPC(EPC, filters);
eventList.addAll(trans);
for (EPCISEventType o : trans) {
TransactionEventType event = (TransactionEventType) o;
for (EPC childEpc : event.getEpcList().getEpc()) {
log.trace("new traceEPC: " + childEpc.getValue());
eventList.addAll(traceEPCAux(childEpc.getValue(), filters));
}
}
}
return eventList;
}

private Map<String, List<EPCISEventType>> traceEPCByEPCIS(DiscoveryOperation dsOp, String EPC, Map<String, String> filters) throws RemoteException {
Map<String, List<EPCISEventType>> eventListByEPCIS = new HashMap<String, List<EPCISEventType>>();
for (String EPCIS_SERVICE_ADDRESS : dsOp.discover(EPC)) {
EpcisOperation epcisOperation = null;
try {
epcisOperation = new EpcisOperation(identity, EPCIS_SERVICE_ADDRESS, pksFilename, pksPassword, trustPksFilename, trustPksPassword);
} catch (Exception ex) {
String msg = "Unable to create service proxy port";
log.warn(msg, ex);
throw new RemoteException(msg, ex);
}
List<EPCISEventType> list = epcisOperation.getObjectEventFromEPC(EPC, filters);
addToMap(eventListByEPCIS, EPCIS_SERVICE_ADDRESS, list);
list = epcisOperation.getQuantityEventFromEPC(EPC, filters);
addToMap(eventListByEPCIS, EPCIS_SERVICE_ADDRESS, list);
log.trace("nbr epc events: " + list.size());
List<EPCISEventType> children = epcisOperation.getAggregationEventFromEPC(EPC, filters);
addToMap(eventListByEPCIS, EPCIS_SERVICE_ADDRESS, children);
log.trace("nbr child events: " + children.size());
for (EPCISEventType o : children) {
AggregationEventType event = (AggregationEventType) o;
for (EPC childEpc : event.getChildEPCs().getEpc()) {
log.trace("new traceEPC: " + childEpc.getValue());
Map<String, List<EPCISEventType>> agEventMap = traceEPCAuxByEPCIS(childEpc.getValue(), filters);
addToMap(eventListByEPCIS, agEventMap);
}
}
List<EPCISEventType> trans = epcisOperation.getTransactionEventFromEPC(EPC, filters);
addToMap(eventListByEPCIS, EPCIS_SERVICE_ADDRESS, trans);
for (EPCISEventType o : trans) {
TransactionEventType event = (TransactionEventType) o;
for (EPC childEpc : event.getEpcList().getEpc()) {
log.trace("new traceEPC: " + childEpc.getValue());
Map<String, List<EPCISEventType>> transEventMap = traceEPCAuxByEPCIS(childEpc.getValue(), filters);
addToMap(eventListByEPCIS, transEventMap);
}
}
}
return eventListByEPCIS;
}

private void addToMap(Map<String, List<EPCISEventType>> map, String epcisAddress, List<EPCISEventType> listToAdd) {
if (map.containsKey(epcisAddress)) {
map.get(epcisAddress).addAll(listToAdd);
}
else {
map.put(epcisAddress, listToAdd);
}
}

private void addToMap(Map<String, List<EPCISEventType>> map, Map<String, List<EPCISEventType>> mapToAdd) {
for (Entry<String, List<EPCISEventType>> mapToAddEntry : mapToAdd.entrySet()) {
String epcisAddress = mapToAddEntry.getKey();
List<EPCISEventType> eventList = mapToAddEntry.getValue();
if (map.containsKey(epcisAddress)) {
map.get(epcisAddress).addAll(eventList);
} else {
map.put(epcisAddress, eventList);
}
}
}

}
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