fix: hide redundant RDP workstation line when it matches server host

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/telegram_templates.py

@@ -82,6 +82,31 @@ def host_label(host: Host | None, *, fallback: str = "unknown") -> str:
     return html_escape(host.hostname)
 
 
+def _host_display_name_base(display_name: str | None) -> str:
+    if not display_name or not display_name.strip():
+        return ""
+    return display_name.strip().split("(", 1)[0].strip()
+
+
+def _rdp_workstation_is_redundant(workstation: str, host: Host | None) -> bool:
+    """Скрыть Workstation Name, если пусто/«-» или совпадает с hostname/display_name сервера."""
+    ws = (workstation or "").strip()
+    if not ws or ws in ("-", "N/A", "?"):
+        return True
+    if host is None:
+        return False
+    ws_key = ws.casefold()
+    if host.hostname and ws_key == host.hostname.strip().casefold():
+        return True
+    dn = (host.display_name or "").strip()
+    if dn and ws_key == dn.casefold():
+        return True
+    base = _host_display_name_base(host.display_name)
+    if base and ws_key == base.casefold():
+        return True
+    return False
+
+
 def format_time(dt: datetime | None) -> str:
     if dt is None:
         return "-"
@@ -175,13 +200,15 @@ def format_rdp_login_html(event: Event) -> str:
 
     user = html_escape(_detail(details, "user", "username"))
     ip = html_escape(_detail(details, "ip_address", "source_ip", "ip"))
-    workstation = html_escape(_detail(details, "workstation_name", "computer_name"))
+    workstation_raw = _detail(details, "workstation_name", "computer_name")
+    workstation = html_escape(workstation_raw)
     process = html_escape(_detail(details, "process_name", "process", default=""))
     logon = logon_type_label(details.get("logon_type"))
 
     msg = f"<b>{header}</b>\n"
     msg += _line("👤", "Пользователь", user)
     msg += _line("🏢", "Сервер", host_label(event.host))
+    if not _rdp_workstation_is_redundant(workstation_raw, event.host):
         msg += _line("🖥️", "Рабочая станция", workstation)
     msg += _line("🌐", "IP адрес", ip)
     if process and process != "-":

backend/tests/test_telegram_templates.py

@@ -49,6 +49,64 @@ def test_rdp_failed_template_includes_user_ip_logon():
     assert "<b>" in text
 
 
+def test_rdp_login_hides_redundant_workstation_when_matches_hostname():
+    host = Host(
+        hostname="ITIS198",
+        display_name="ITIS (192.168.160.198)",
+        os_family="windows",
+    )
+    event = Event(
+        event_id="00000000-0000-4000-8000-000000000508",
+        host_id=1,
+        host=host,
+        occurred_at=datetime(2026, 5, 31, 18, 48, 52, tzinfo=timezone.utc),
+        category="auth",
+        type="rdp.login.success",
+        severity="info",
+        title="RDP login",
+        summary="papatramp",
+        details={
+            "user": "papatramp",
+            "ip_address": "192.168.160.3",
+            "logon_type": 10,
+            "workstation_name": "ITIS198",
+            "event_id_windows": 4624,
+        },
+        payload={},
+    )
+    text = format_rdp_login_html(event)
+    assert "ITIS" in text
+    assert "192.168.160.3" in text
+    assert "Рабочая станция" not in text
+    assert "ITIS198" not in text
+
+
+def test_rdp_login_shows_workstation_when_client_differs():
+    host = Host(hostname="ITIS198", display_name="ITIS", os_family="windows")
+    event = Event(
+        event_id="00000000-0000-4000-8000-000000000509",
+        host_id=1,
+        host=host,
+        occurred_at=datetime(2026, 5, 31, 18, 48, 52, tzinfo=timezone.utc),
+        category="auth",
+        type="rdp.login.success",
+        severity="info",
+        title="RDP login",
+        summary="papatramp",
+        details={
+            "user": "papatramp",
+            "ip_address": "192.168.160.3",
+            "logon_type": 10,
+            "workstation_name": "NEW-ADMIN-PC",
+            "event_id_windows": 4624,
+        },
+        payload={},
+    )
+    text = format_rdp_login_html(event)
+    assert "Рабочая станция" in text
+    assert "NEW-ADMIN-PC" in text
+
+
 def test_rdp_success_template():
     event = Event(
         event_id="00000000-0000-4000-8000-000000000502",