[fs2zammad] allow arbitrary source directory as CLI arg

fs2zammad

@@ -113,6 +113,25 @@ def maybe_create_zammad_user(userdata, zammad_session, attr="login", default=Non
 
     return USERMAP[lowercase_email].get(attr, default)
 
+def remove_existing_zammad_tickets_for(rt_id, zammad, retries=3):
+    try:
+        matching_zammad_tickets= zammad.ticket.search(f"title: \"[RT-{rt_id}]*\"")
+        if len(matching_zammad_tickets) >= 1:
+            print(f"Found existing ticket:")
+            for zt in matching_zammad_tickets:
+                print(f"{zt["id"]} {zt["title"]}")
+                print(f"Deleting Zammad ticket {zt["id"]}")
+                zammad.ticket.destroy(zt["id"])
+    except:
+        print(f"Failed to cleanup duplicates for RT-{rt_id} .. ({retries} retries left)")
+        if retries > 0:
+            print("Sleeping 5 seconds to give Zammad some air...")
+            time.sleep(5)
+            remove_existing_zammad_tickets_for(rt_id, zammad, retries - 1)
+        else:
+             traceback.print_exc()
+             raise RuntimeError
+
 # def ensure_user_is_zammad_agent(user, zammad_session):
 #     print(f"Promoting user {user} to Agent")
 #     id = maybe_create_zammad_user(user, zammad_session, "id")
@@ -284,19 +303,27 @@ with open("rt2zammad.json") as handle:
 h2t = html2text.HTML2Text()
 zammad = get_zammad_session()
 
+source_directory = "tickets/"
+if len(sys.argv) >= 2:
+    source_directory = sys.argv[1]
+if not os.path.isdir(source_directory):
+    print(f"Could not find source directory {source_directory}. Exiting.")
+    sys.exit(1)
+
 os.makedirs("users", exist_ok=True)
 os.makedirs("tickets", exist_ok=True)
 os.makedirs("attachments", exist_ok=True)
 os.makedirs("failed", exist_ok=True)
 os.makedirs("processed", exist_ok=True)
 
-ticket_ids = os.listdir("tickets/")
-print(f"Found {len(ticket_ids)} tickets on filesystem.")
+ticket_ids = os.listdir(source_directory)
+print(f"Found {len(ticket_ids)} tickets on filesystem (source directory: {source_directory})")
 ticket_ids = list(map(int, ticket_ids))
 ticket_ids.sort()
 
 for id in ticket_ids:
     try:
+        remove_existing_zammad_tickets_for(id, zammad, 5)
         zammad_ticket_id = create_zammad_ticket(id, zammad, h2t, 5)
         dumpfile = f"processed/{id}"
         with open(dumpfile, "w") as handle: