Add method to check the visibility of a reply.

diff --git a/src/main/java/net/pterodactylus/sone/notify/ListNotificationFilters.java b/src/main/java/net/pterodactylus/sone/notify/ListNotificationFilters.java
index 58afc17..bc27173 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/notify/ListNotificationFilters.java
+++ b/src/main/java/net/pterodactylus/sone/notify/ListNotificationFilters.java
@@ -213,6 +213,50 @@ public class ListNotificationFilters {
                if ((!postSone.equals(sone)) && !sone.hasFriend(postSone.getId()) && !sone.equals(post.getRecipient())) {
                        return false;
                }
+               if (post.getTime() > System.currentTimeMillis()) {
+                       return false;
+               }
+               return true;
+       }
+
+       /**
+        * Checks whether a reply is visible to the given Sone. A reply is not
+        * considered visible if one of the following statements is true:
+        * <ul>
+        * <li>The reply does not have a post.</li>
+        * <li>The reply’s post does not have a Sone.</li>
+        * <li>The Sone of the reply’s post is not the given Sone, the given Sone
+        * does not follow the reply’s post’s Sone, and the given Sone is not the
+        * recipient of the reply’s post.</li>
+        * <li>The trust relationship between the two Sones can not be retrieved.</li>
+        * <li>The given Sone has explicitely assigned negative trust to the post’s
+        * Sone.</li>
+        * <li>The given Sone has not explicitely assigned negative trust to the
+        * reply’s post’s Sone but the implicit trust is negative.</li>
+        * <li>The reply’s post’s {@link Post#getTime() time} is in the future.</li>
+        * <li>The reply’s {@link Reply#getTime() time} is in the future.</li>
+        * </ul>
+        * If none of these statements is true the reply is considered visible.
+        *
+        * @param sone
+        *            The Sone that checks for a post’s visibility
+        * @param reply
+        *            The reply to check for visibility
+        * @return {@code true} if the reply is considered visible, {@code false}
+        *         otherwise
+        */
+       public static boolean isReplyVisible(Sone sone, Reply reply) {
+               Validation.begin().isNotNull("Sone", sone).isNotNull("Reply", reply).check().isNotNull("Sone’s Identity", sone.getIdentity()).check().isInstanceOf("Sone’s Identity", sone.getIdentity(), OwnIdentity.class).check();
+               Post post = reply.getPost();
+               if (post == null) {
+                       return false;
+               }
+               if (!isPostVisible(sone, post)) {
+                       return false;
+               }
+               if (reply.getTime() > System.currentTimeMillis()) {
+                       return false;
+               }
                return true;
        }