Merge "Show granted date for labels/all when using /changes/-api."

Documentation/rest-api-changes.txt

@@ -2068,6 +2068,8 @@ In addition `ApprovalInfo` has the following fields:
 The vote that the user has given for the label. If present and zero, the
 user is permitted to vote on the label. If absent, the user is not
 permitted to vote on that label.
+|`date`        |optional|
+The time and date describing when the approval was made.
 |===========================
 
 [[change-info]]

gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeJson.java

@@ -470,16 +470,18 @@ public class ChangeJson {
           continue;
         }
         Integer value;
+        Timestamp date = null;
         PatchSetApproval psa = current.get(accountId, lt.getName());
         if (psa != null) {
           value = Integer.valueOf(psa.getValue());
+          date = psa.getGranted();
         } else {
           // Either the user cannot vote on this label, or there just wasn't a
           // dummy approval for this label. Explicitly check whether the user
           // can vote on this label.
           value = labelNormalizer.canVote(ctl, lt, accountId) ? 0 : null;
         }
-        e.getValue().addApproval(approvalInfo(accountId, value));
+        e.getValue().addApproval(approvalInfo(accountId, value, date));
       }
     }
   }
@@ -523,7 +525,7 @@ public class ChangeJson {
 
       if (detailed) {
         for (String name : labels.keySet()) {
-          ApprovalInfo ai = approvalInfo(accountId, 0);
+          ApprovalInfo ai = approvalInfo(accountId, 0, null);
           byLabel.put(name, ai);
           labels.get(name).addApproval(ai);
         }
@@ -538,6 +540,7 @@ public class ChangeJson {
         ApprovalInfo info = byLabel.get(type.getName());
         if (info != null) {
           info.value = Integer.valueOf(val);
+          info.date = psa.getGranted();
         }
 
         LabelInfo li = labels.get(type.getName());
@@ -562,9 +565,10 @@ public class ChangeJson {
     return labels;
   }
 
-  private ApprovalInfo approvalInfo(Account.Id id, Integer value) {
+  private ApprovalInfo approvalInfo(Account.Id id, Integer value, Timestamp date) {
     ApprovalInfo ai = new ApprovalInfo(id);
     ai.value = value;
+    ai.date = date;
     accountLoader.put(ai);
     return ai;
   }
@@ -918,6 +922,7 @@ public class ChangeJson {
 
   static class ApprovalInfo extends AccountInfo {
     Integer value;
+    Timestamp date;
 
     ApprovalInfo(Account.Id id) {
       super(id);