/*
* Copyright 2010-2011 Ning, Inc.
*
* Ning licenses this file to you 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 com.ning.billing.entitlement.api.user;
import com.ning.billing.ErrorCode;
import com.ning.billing.catalog.api.*;
import com.ning.billing.entitlement.api.user.SubscriptionFactory.SubscriptionBuilder;
import com.ning.billing.entitlement.events.EntitlementEvent;
import com.ning.billing.entitlement.events.EntitlementEvent.EventType;
import com.ning.billing.entitlement.events.phase.PhaseEvent;
import com.ning.billing.entitlement.events.user.ApiEvent;
import com.ning.billing.entitlement.events.user.ApiEventType;
import com.ning.billing.entitlement.exceptions.EntitlementError;
import com.ning.billing.util.clock.Clock;
import org.joda.time.DateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.*;
public class SubscriptionData implements Subscription {
private final static Logger log = LoggerFactory.getLogger(SubscriptionData.class);
private final Clock clock;
private final SubscriptionApiService apiService;
//
// Final subscription fields
//
private final UUID id;
private final UUID bundleId;
private final DateTime startDate;
private final DateTime bundleStartDate;
private final ProductCategory category;
//
// Those can be modified through non User APIs, and a new Subscription object would be created
//
private final long activeVersion;
private final DateTime chargedThroughDate;
private final DateTime paidThroughDate;
//
// User APIs (create, change, cancel,...) will recompute those each time,
// so the user holding that subscription object get the correct state when
// the call completes
//
private List<SubscriptionTransitionData> transitions;
// Transient object never returned at the API
public SubscriptionData(SubscriptionBuilder builder) {
this(builder, null, null);
}
public SubscriptionData(SubscriptionBuilder builder, SubscriptionApiService apiService, Clock clock) {
super();
this.apiService = apiService;
this.clock = clock;
this.id = builder.getId();
this.bundleId = builder.getBundleId();
this.startDate = builder.getStartDate();
this.bundleStartDate = builder.getBundleStartDate();
this.category = builder.getCategory();
this.activeVersion = builder.getActiveVersion();
this.chargedThroughDate = builder.getChargedThroughDate();
this.paidThroughDate = builder.getPaidThroughDate();
}
@Override
public UUID getId() {
return id;
}
@Override
public UUID getBundleId() {
return bundleId;
}
@Override
public DateTime getStartDate() {
return startDate;
}
@Override
public SubscriptionState getState() {
return (transitions == null) ? null : getLatestTranstion().getNextState();
}
@Override
public PlanPhase getCurrentPhase() {
return (transitions == null) ? null : getLatestTranstion().getNextPhase();
}
@Override
public Plan getCurrentPlan() {
return (transitions == null) ? null : getLatestTranstion().getNextPlan();
}
@Override
public String getCurrentPriceList() {
return (transitions == null) ? null : getLatestTranstion().getNextPriceList();
}
@Override
public DateTime getEndDate() {
SubscriptionTransition latestTransition = getLatestTranstion();
if (latestTransition.getNextState() == SubscriptionState.CANCELLED) {
return latestTransition.getEffectiveTransitionTime();
}
return null;
}
@Override
public void cancel(DateTime requestedDate, boolean eot) throws EntitlementUserApiException {
apiService.cancel(this, requestedDate, eot);
}
@Override
public void uncancel() throws EntitlementUserApiException {
apiService.uncancel(this);
}
@Override
public void changePlan(String productName, BillingPeriod term,
String priceList, DateTime requestedDate) throws EntitlementUserApiException {
apiService.changePlan(this, productName, term, priceList, requestedDate);
}
@Override
public void pause() throws EntitlementUserApiException {
throw new EntitlementUserApiException(ErrorCode.NOT_IMPLEMENTED);
}
@Override
public void resume() throws EntitlementUserApiException {
throw new EntitlementUserApiException(ErrorCode.NOT_IMPLEMENTED);
}
@Override
public List<SubscriptionTransition> getActiveTransitions() {
if (transitions == null) {
return Collections.emptyList();
}
List<SubscriptionTransition> activeTransitions = new ArrayList<SubscriptionTransition>();
for (SubscriptionTransition cur : transitions) {
if (cur.getEffectiveTransitionTime().isAfter(clock.getUTCNow())) {
activeTransitions.add(cur);
}
}
return activeTransitions;
}
@Override
public SubscriptionTransition getPendingTransition() {
if (transitions == null) {
return null;
}
for (SubscriptionTransition cur : transitions) {
if (cur.getEffectiveTransitionTime().isAfter(clock.getUTCNow())) {
return cur;
}
}
return null;
}
public SubscriptionTransition getLatestTranstion() {
if (transitions == null) {
return null;
}
SubscriptionTransition latestSubscription = null;
for (SubscriptionTransition cur : transitions) {
if (cur.getEffectiveTransitionTime().isAfter(clock.getUTCNow())) {
break;
}
latestSubscription = cur;
}
return latestSubscription;
}
public SubscriptionTransition getTransitionFromEvent(EntitlementEvent event) {
if (transitions == null || event == null) {
return null;
}
for (SubscriptionTransition cur : transitions) {
if (cur.getId().equals(event.getId())) {
return cur;
}
}
return null;
}
public long getActiveVersion() {
return activeVersion;
}
public ProductCategory getCategory() {
return category;
}
public DateTime getBundleStartDate() {
return bundleStartDate;
}
public DateTime getChargedThroughDate() {
return chargedThroughDate;
}
public DateTime getPaidThroughDate() {
return paidThroughDate;
}
public DateTime getCurrentPlanStart() {
return getInitialTransitionForCurrentPlan().getEffectiveTransitionTime();
}
public PlanPhase getInitialPhaseOnCurrentPlan() {
return getInitialTransitionForCurrentPlan().getNextPhase();
}
private SubscriptionTransitionData getInitialTransitionForCurrentPlan() {
if (transitions == null) {
throw new EntitlementError(String.format("No transitions for subscription %s", getId()));
}
Iterator<SubscriptionTransitionData> it = ((LinkedList<SubscriptionTransitionData>) transitions).descendingIterator();
while (it.hasNext()) {
SubscriptionTransitionData cur = it.next();
if (cur.getEffectiveTransitionTime().isAfter(clock.getUTCNow())) {
// Skip future events
continue;
}
if (cur.getEventType() == EventType.API_USER &&
cur.getApiEventType() == ApiEventType.CHANGE) {
return cur;
}
}
// CREATE event
return transitions.get(0);
}
public boolean isSubscriptionFutureCancelled() {
if (transitions == null) {
return false;
}
for (SubscriptionTransitionData cur : transitions) {
if (cur.getEffectiveTransitionTime().isBefore(clock.getUTCNow()) ||
cur.getEventType() == EventType.PHASE ||
cur.getApiEventType() != ApiEventType.CANCEL) {
continue;
}
return true;
}
return false;
}
public DateTime getPlanChangeEffectiveDate(ActionPolicy policy, DateTime now) {
if (policy == ActionPolicy.IMMEDIATE) {
return now;
}
if (policy != ActionPolicy.END_OF_TERM) {
throw new EntitlementError(String.format("Unexpected policy type %s", policy.toString()));
}
//
// If CTD is null or CTD in the past, we default to the start date of the current phase
//
DateTime effectiveDate = chargedThroughDate;
if (chargedThroughDate == null || chargedThroughDate.isBefore(clock.getUTCNow())) {
effectiveDate = getCurrentPhaseStart();
}
return effectiveDate;
}
public DateTime getCurrentPhaseStart() {
if (transitions == null) {
throw new EntitlementError(String.format("No transitions for subscription %s", getId()));
}
Iterator<SubscriptionTransitionData> it = ((LinkedList<SubscriptionTransitionData>) transitions).descendingIterator();
while (it.hasNext()) {
SubscriptionTransitionData cur = it.next();
if (cur.getEffectiveTransitionTime().isAfter(clock.getUTCNow())) {
// Skip future events
continue;
}
if (cur.getEventType() == EventType.PHASE) {
return cur.getEffectiveTransitionTime();
}
}
// CREATE event
return transitions.get(0).getEffectiveTransitionTime();
}
public void rebuildTransitions(final List<EntitlementEvent> events, final Catalog catalog) {
if (events == null) {
return;
}
SubscriptionState nextState = null;
String nextPlanName = null;
String nextPhaseName = null;
String nextPriceList = null;
SubscriptionState previousState = null;
String previousPlanName = null;
String previousPhaseName = null;
String previousPriceList = null;
transitions = new LinkedList<SubscriptionTransitionData>();
for (final EntitlementEvent cur : events) {
if (!cur.isActive() || cur.getActiveVersion() < activeVersion) {
continue;
}
ApiEventType apiEventType = null;
switch (cur.getType()) {
case PHASE:
PhaseEvent phaseEV = (PhaseEvent) cur;
nextPhaseName = phaseEV.getPhase();
break;
case API_USER:
ApiEvent userEV = (ApiEvent) cur;
apiEventType = userEV.getEventType();
switch(apiEventType) {
case MIGRATE_ENTITLEMENT:
case CREATE:
nextState = SubscriptionState.ACTIVE;
nextPlanName = userEV.getEventPlan();
nextPhaseName = userEV.getEventPlanPhase();
nextPriceList = userEV.getPriceList();
break;
case CHANGE:
nextPlanName = userEV.getEventPlan();
nextPhaseName = userEV.getEventPlanPhase();
nextPriceList = userEV.getPriceList();
break;
case PAUSE:
nextState = SubscriptionState.PAUSED;
break;
case RESUME:
nextState = SubscriptionState.ACTIVE;
break;
case CANCEL:
nextState = SubscriptionState.CANCELLED;
nextPlanName = null;
nextPhaseName = null;
break;
case UNCANCEL:
break;
default:
throw new EntitlementError(String.format("Unexpected UserEvent type = %s",
userEV.getEventType().toString()));
}
break;
default:
throw new EntitlementError(String.format("Unexpected Event type = %s",
cur.getType()));
}
Plan previousPlan = null;
PlanPhase previousPhase = null;
Plan nextPlan = null;
PlanPhase nextPhase = null;
try {
previousPlan = (previousPlanName != null) ? catalog.findPlan(previousPlanName) : null;
previousPhase = (previousPhaseName != null) ? catalog.findPhase(previousPhaseName) : null;
nextPlan = (nextPlanName != null) ? catalog.findPlan(nextPlanName) : null;
nextPhase = (nextPhaseName != null) ? catalog.findPhase(nextPhaseName) : null;
} catch (CatalogApiException e) {
log.error(String.format("Failed to build transition for subscription %s", id), e);
}
SubscriptionTransitionData transition =
new SubscriptionTransitionData(cur.getId(),
id,
bundleId,
cur.getType(),
apiEventType,
cur.getRequestedDate(),
cur.getEffectiveDate(),
previousState,
previousPlan,
previousPhase,
previousPriceList,
nextState,
nextPlan,
nextPhase,
nextPriceList);
transitions.add(transition);
previousState = nextState;
previousPlanName = nextPlanName;
previousPhaseName = nextPhaseName;
previousPriceList = nextPriceList;
}
}
}