Add next year archive after previous one

src/freedombone-archive-mail

@@ -50,9 +50,16 @@ for d in /home/*/ ; do
             # add the archive to .muttrc if needed
             if [ -f $MUTTRC ]; then
                 MUTT_MAILBOXES=$(grep "mailboxes =" $MUTTRC)
-                BACKUP_DIRECTORY=archive-$(date +"%Y")
+                YR=$(date +"%Y")
+                PREV_YR=$((YR - 1))
+                BACKUP_DIRECTORY=archive-$YR
+                PREV_BACKUP_DIRECTORY=archive-$PREV_YR
                 if [[ $MUTT_MAILBOXES != *$BACKUP_DIRECTORY* ]]; then
-                    sed -i "s|$MUTT_MAILBOXES|$MUTT_MAILBOXES =$BACKUP_DIRECTORY|g" $MUTTRC
+                    if [[ $MUTT_MAILBOXES == *$PREV_BACKUP_DIRECTORY* ]]; then
+                        sed -i "s|$PREV_BACKUP_DIRECTORY|$PREV_BACKUP_DIRECTORY =$BACKUP_DIRECTORY|g" $MUTTRC
+                    else
+                        sed -i "s|$MUTT_MAILBOXES|$MUTT_MAILBOXES =$BACKUP_DIRECTORY|g" $MUTTRC
+                    fi
                     chown $USERNAME:$USERNAME $MUTTRC
                 fi
             fi