Return expiry date along with the EAP fee

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=126407427

java/google/registry/model/domain/fee/EapFee.java

@@ -0,0 +1,51 @@
+// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
+//
+// 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 google.registry.model.domain.fee;
+
+import static google.registry.util.PreconditionsUtils.checkArgumentNotNull;
+
+import com.google.common.collect.Range;
+
+import org.joda.money.Money;
+import org.joda.time.DateTime;
+
+/**
+ * An object representing an EAP fee (as a {@link Money}) along with the interval for which the
+ * fee applies.
+ */
+public class EapFee {
+
+  /** The EAP fee (as applied on top of the domain registration cost). */
+  Money cost;
+
+  /** The time period for which the fee applies. */
+  Range<DateTime> period;
+
+  public Money getCost() {
+    return cost;
+  }
+
+  public Range<DateTime> getPeriod() {
+    return period;
+  }
+
+  public static EapFee create(Money cost, Range<DateTime> period) {
+    EapFee instance = new EapFee();
+    instance.cost = checkArgumentNotNull(cost, "EAP fee cost cannot be null.");
+    instance.period = checkArgumentNotNull(period, "EAP fee period cannot be null.");
+    return instance;
+  }
+}
+

java/google/registry/model/registry/Registry.java

@@ -23,6 +23,7 @@ import static google.registry.model.ofy.ObjectifyService.ofy;
 import static google.registry.model.ofy.Ofy.RECOMMENDED_MEMCACHE_EXPIRATION;
 import static google.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
 import static google.registry.util.DateTimeUtils.END_OF_TIME;
+import static google.registry.util.DateTimeUtils.START_OF_TIME;
 import static google.registry.util.PreconditionsUtils.checkArgumentNotNull;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static org.joda.money.CurrencyUnit.USD;
@@ -37,6 +38,7 @@ import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.ImmutableSortedMap;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Ordering;
+import com.google.common.collect.Range;
 import com.google.common.net.InternetDomainName;
 
 import com.googlecode.objectify.Key;
@@ -57,6 +59,7 @@ import google.registry.model.ImmutableObject;
 import google.registry.model.common.EntityGroupRoot;
 import google.registry.model.common.TimedTransitionProperty;
 import google.registry.model.common.TimedTransitionProperty.TimedTransition;
+import google.registry.model.domain.fee.EapFee;
 import google.registry.model.pricing.PremiumPricingEngine;
 import google.registry.model.pricing.StaticPremiumListPricingEngine;
 import google.registry.model.registry.label.PremiumList;
@@ -521,8 +524,15 @@ public class Registry extends ImmutableObject implements Buildable {
   /**
    * Returns the EAP fee for the registry at the given time.
    */
-  public Money getEapFeeFor(DateTime now) {
-    return eapFeeSchedule.getValueAtTime(now);
+  public EapFee getEapFeeFor(DateTime now) {
+    ImmutableSortedMap<DateTime, Money> valueMap = eapFeeSchedule.toValueMap();
+    DateTime periodStart = valueMap.floorKey(now);
+    DateTime periodEnd = valueMap.ceilingKey(now);
+    return EapFee.create(
+        eapFeeSchedule.getValueAtTime(now),
+        Range.closedOpen(
+            periodStart != null ? periodStart : START_OF_TIME,
+            periodEnd != null ? periodEnd : END_OF_TIME));
   }
 
   public String getLordnUsername() {