JAMES-3148 Cleanup Mailbox recents DAO
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java
index 3631d52..def8f71 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/CassandraMailboxSessionMapperFactory.java
@@ -206,6 +206,6 @@
     public DeleteMessageListener deleteMessageListener() {
         return new DeleteMessageListener(imapUidDAO, messageIdDAO, messageDAO, attachmentDAOV2, ownerDAO,
             attachmentMessageIdDAO, aclMapper, userMailboxRightsDAO, applicableFlagDAO, firstUnseenDAO, deletedMessageDAO,
-            mailboxCounterDAO);
+            mailboxCounterDAO, mailboxRecentsDAO);
     }
 }
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/DeleteMessageListener.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/DeleteMessageListener.java
index ed70a9a..521a59a 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/DeleteMessageListener.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/DeleteMessageListener.java
@@ -36,6 +36,7 @@
 import org.apache.james.mailbox.cassandra.mail.CassandraDeletedMessageDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraFirstUnseenDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMailboxCounterDAO;
+import org.apache.james.mailbox.cassandra.mail.CassandraMailboxRecentsDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMessageDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMessageIdDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMessageIdToImapUidDAO;
@@ -73,13 +74,14 @@
     private final CassandraFirstUnseenDAO firstUnseenDAO;
     private final CassandraDeletedMessageDAO deletedMessageDAO;
     private final CassandraMailboxCounterDAO counterDAO;
+    private final CassandraMailboxRecentsDAO recentsDAO;
 
     @Inject
     public DeleteMessageListener(CassandraMessageIdToImapUidDAO imapUidDAO, CassandraMessageIdDAO messageIdDAO, CassandraMessageDAO messageDAO,
                                  CassandraAttachmentDAOV2 attachmentDAO, CassandraAttachmentOwnerDAO ownerDAO,
                                  CassandraAttachmentMessageIdDAO attachmentMessageIdDAO, CassandraACLMapper aclMapper,
                                  CassandraUserMailboxRightsDAO rightsDAO, CassandraApplicableFlagDAO applicableFlagDAO,
-                                 CassandraFirstUnseenDAO firstUnseenDAO, CassandraDeletedMessageDAO deletedMessageDAO, CassandraMailboxCounterDAO counterDAO) {
+                                 CassandraFirstUnseenDAO firstUnseenDAO, CassandraDeletedMessageDAO deletedMessageDAO, CassandraMailboxCounterDAO counterDAO, CassandraMailboxRecentsDAO recentsDAO) {
         this.imapUidDAO = imapUidDAO;
         this.messageIdDAO = messageIdDAO;
         this.messageDAO = messageDAO;
@@ -92,6 +94,7 @@
         this.firstUnseenDAO = firstUnseenDAO;
         this.deletedMessageDAO = deletedMessageDAO;
         this.counterDAO = counterDAO;
+        this.recentsDAO = recentsDAO;
     }
 
     @Override
@@ -132,6 +135,7 @@
                 .then(firstUnseenDAO.removeAll(mailboxId))
                 .then(deletedMessageDAO.removeAll(mailboxId))
                 .then(counterDAO.delete(mailboxId))
+                .then(recentsDAO.delete(mailboxId))
                 .block();
         }
     }
diff --git a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentsDAO.java b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentsDAO.java
index 3d91975..ed96abd 100644
--- a/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentsDAO.java
+++ b/mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentsDAO.java
@@ -20,7 +20,6 @@
 package org.apache.james.mailbox.cassandra.mail;
 
 import static com.datastax.driver.core.querybuilder.QueryBuilder.bindMarker;
-import static com.datastax.driver.core.querybuilder.QueryBuilder.delete;
 import static com.datastax.driver.core.querybuilder.QueryBuilder.eq;
 import static com.datastax.driver.core.querybuilder.QueryBuilder.insertInto;
 import static com.datastax.driver.core.querybuilder.QueryBuilder.select;
@@ -36,6 +35,7 @@
 import com.datastax.driver.core.BoundStatement;
 import com.datastax.driver.core.PreparedStatement;
 import com.datastax.driver.core.Session;
+import com.datastax.driver.core.querybuilder.QueryBuilder;
 import com.google.common.annotations.VisibleForTesting;
 
 import reactor.core.publisher.Flux;
@@ -46,6 +46,7 @@
     private final CassandraAsyncExecutor cassandraAsyncExecutor;
     private final PreparedStatement readStatement;
     private final PreparedStatement deleteStatement;
+    private final PreparedStatement deleteAllStatement;
     private final PreparedStatement addStatement;
     private CassandraUtils cassandraUtils;
 
@@ -54,6 +55,7 @@
         cassandraAsyncExecutor = new CassandraAsyncExecutor(session);
         readStatement = createReadStatement(session);
         deleteStatement = createDeleteStatement(session);
+        deleteAllStatement = createDeleteAllStatement(session);
         addStatement = createAddStatement(session);
         this.cassandraUtils = cassandraUtils;
     }
@@ -72,12 +74,19 @@
 
     private PreparedStatement createDeleteStatement(Session session) {
         return session.prepare(
-            delete()
+            QueryBuilder.delete()
                 .from(CassandraMailboxRecentsTable.TABLE_NAME)
                 .where(eq(CassandraMailboxRecentsTable.MAILBOX_ID, bindMarker(CassandraMailboxRecentsTable.MAILBOX_ID)))
                 .and(eq(CassandraMailboxRecentsTable.RECENT_MESSAGE_UID, bindMarker(CassandraMailboxRecentsTable.RECENT_MESSAGE_UID))));
     }
 
+    private PreparedStatement createDeleteAllStatement(Session session) {
+        return session.prepare(
+            QueryBuilder.delete()
+                .from(CassandraMailboxRecentsTable.TABLE_NAME)
+                .where(eq(CassandraMailboxRecentsTable.MAILBOX_ID, bindMarker(CassandraMailboxRecentsTable.MAILBOX_ID))));
+    }
+
     private PreparedStatement createAddStatement(Session session) {
         return session.prepare(
             insertInto(CassandraMailboxRecentsTable.TABLE_NAME)
@@ -103,6 +112,11 @@
             .setLong(CassandraMailboxRecentsTable.RECENT_MESSAGE_UID, messageUid.asLong()));
     }
 
+    public Mono<Void> delete(CassandraId mailboxId) {
+        return cassandraAsyncExecutor.executeVoid(deleteAllStatement.bind()
+            .setUUID(CassandraMailboxRecentsTable.MAILBOX_ID, mailboxId.asUuid()));
+    }
+
     public Mono<Void> addToRecent(CassandraId mailboxId, MessageUid messageUid) {
         return cassandraAsyncExecutor.executeVoid(addStatement.bind()
             .setUUID(CassandraMailboxRecentsTable.MAILBOX_ID, mailboxId.asUuid())
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java
index 36ca5d8..0865d83 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/CassandraMailboxManagerTest.java
@@ -48,6 +48,7 @@
 import org.apache.james.mailbox.cassandra.mail.CassandraDeletedMessageDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraFirstUnseenDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMailboxCounterDAO;
+import org.apache.james.mailbox.cassandra.mail.CassandraMailboxRecentsDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMessageDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMessageIdDAO;
 import org.apache.james.mailbox.cassandra.mail.CassandraMessageIdToImapUidDAO;
@@ -702,6 +703,37 @@
                 .isEmpty();
         }
 
+        @Test
+        void deleteMailboxShouldCleanUpRecent(CassandraCluster cassandraCluster) throws Exception {
+            inboxManager.appendMessage(MessageManager.AppendCommand.builder()
+                .withFlags(new Flags(Flags.Flag.RECENT))
+                .build(ClassLoaderUtils.getSystemResourceAsByteArray("eml/emailWithOnlyAttachment.eml")), session);
+
+            mailboxManager.deleteMailbox(inbox, session);
+
+            assertThat(new CassandraMailboxRecentsDAO(cassandraCluster.getConf()).getRecentMessageUidsInMailbox((CassandraId) inboxId)
+                .collectList().block())
+                .isEmpty();
+        }
+
+        @Test
+        void deleteMailboxShouldCleanUpRecentWhenFailure(CassandraCluster cassandraCluster) throws Exception {
+            inboxManager.appendMessage(MessageManager.AppendCommand.builder()
+                .withFlags(new Flags(Flags.Flag.RECENT))
+                .build(ClassLoaderUtils.getSystemResourceAsByteArray("eml/emailWithOnlyAttachment.eml")), session);
+
+
+            cassandraCluster.getConf().registerScenario(fail()
+                .times(1)
+                .whenQueryStartsWith("DELETE FROM mailboxRecents WHERE mailboxId=:mailboxId;"));
+
+            mailboxManager.deleteMailbox(inbox, session);
+
+            assertThat(new CassandraMailboxRecentsDAO(cassandraCluster.getConf()).getRecentMessageUidsInMailbox((CassandraId) inboxId)
+                .collectList().block())
+                .isEmpty();
+        }
+
         private CassandraMailboxCounterDAO countersDAO(CassandraCluster cassandraCluster) {
             return new CassandraMailboxCounterDAO(cassandraCluster.getConf());
         }
diff --git a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentDAOTest.java b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentDAOTest.java
index 8e05300..e773083 100644
--- a/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentDAOTest.java
+++ b/mailbox/cassandra/src/test/java/org/apache/james/mailbox/cassandra/mail/CassandraMailboxRecentDAOTest.java
@@ -20,6 +20,7 @@
 package org.apache.james.mailbox.cassandra.mail;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatCode;
 
 import java.util.stream.IntStream;
 
@@ -78,6 +79,24 @@
     }
 
     @Test
+    void getRecentMessageUidsInMailboxShouldNotReturnDeletedItems() {
+        testee.addToRecent(CASSANDRA_ID, UID1).block();
+        testee.addToRecent(CASSANDRA_ID, UID2).block();
+
+        testee.delete(CASSANDRA_ID).block();
+
+        assertThat(testee.getRecentMessageUidsInMailbox(CASSANDRA_ID)
+            .collectList()
+            .block())
+            .isEmpty();
+    }
+
+    @Test
+    void deleteShouldNotThrowWhenNothing() {
+        assertThatCode(() -> testee.delete(CASSANDRA_ID).block()).doesNotThrowAnyException();
+    }
+
+    @Test
     void removeFromRecentShouldNotFailIfNotExisting() {
         testee.removeFromRecent(CASSANDRA_ID, UID1).block();