v2.5.0: redesign local admin and repair stats

gotelegram-bot/i18n.py

@@ -24,12 +24,37 @@ logger = logging.getLogger(__name__)
 _MODULE_DIR = Path(__file__).resolve().parent
 LANG_DIR = _MODULE_DIR / "lang"
 USER_LANG_FILE = Path("/opt/gotelegram-bot/user_langs.json")
+GOTELEGRAM_CONFIG = Path("/opt/gotelegram/config.json")
+GOTELEGRAM_LANG_MARKER = Path("/opt/gotelegram/.language")
 
 # Supported codes; keep in sync with lang/*.json
 SUPPORTED_LANGS = ("en", "ru")
-DEFAULT_LANG = os.getenv("BOT_LANG", "en").strip().lower() or "en"
-if DEFAULT_LANG not in SUPPORTED_LANGS:
-    DEFAULT_LANG = "en"
+
+
+def _detect_default_lang() -> str:
+    candidates = []
+    try:
+        if GOTELEGRAM_CONFIG.exists():
+            with open(GOTELEGRAM_CONFIG, "r", encoding="utf-8") as f:
+                data = json.load(f)
+            if isinstance(data, dict):
+                candidates.extend([data.get("language"), data.get("lang")])
+    except Exception as e:
+        logger.warning("failed to read GoTelegram language config: %s", e)
+    try:
+        if GOTELEGRAM_LANG_MARKER.exists():
+            candidates.append(GOTELEGRAM_LANG_MARKER.read_text(encoding="utf-8").strip()[:2])
+    except Exception as e:
+        logger.warning("failed to read GoTelegram language marker: %s", e)
+    candidates.append(os.getenv("BOT_LANG", ""))
+    for raw in candidates:
+        code = str(raw or "").strip().lower()
+        if code in SUPPORTED_LANGS:
+            return code
+    return "en"
+
+
+DEFAULT_LANG = _detect_default_lang()
 
 LANG_NAMES = {
     "en": "English",