feat: open bot install guides in mini app

backend/bot/utils/mini_app_url.py

@@ -3,9 +3,10 @@
 from __future__ import annotations
 
 from typing import Optional
-from urllib.parse import parse_qsl, urlencode, urlsplit, urlunsplit
+from urllib.parse import parse_qsl, quote, urlencode, urlsplit, urlunsplit
 
 from config.settings import Settings
+from db.dal.subscription_dal import normalize_install_share_token
 
 
 def append_query_params(base_url: str, params: dict[str, str]) -> str:
@@ -31,3 +32,31 @@ def subscription_mini_app_topup_url(settings: Settings, kind: str) -> Optional[s
         return None
     normalized = "premium" if str(kind or "").strip().lower() == "premium" else "regular"
     return append_query_params(base, {"topup": normalized})
+
+
+def subscription_mini_app_path_url(settings: Settings, path: str) -> Optional[str]:
+    """Return a Mini App URL with ``path`` appended to the configured app base."""
+    base = str(getattr(settings, "SUBSCRIPTION_MINI_APP_URL", None) or "").strip()
+    if not base:
+        return None
+    normalized_path = f"/{str(path or '').lstrip('/')}"
+    return f"{base.rstrip('/')}{normalized_path}"
+
+
+def subscription_mini_app_install_url(settings: Settings) -> Optional[str]:
+    """Return the personal embedded install guide URL."""
+    return subscription_mini_app_path_url(settings, "/install")
+
+
+def subscription_public_install_url(settings: Settings, share_token: str) -> Optional[str]:
+    """Return the public install guide URL for a normalized share token."""
+    token = normalize_install_share_token(share_token)
+    base = str(getattr(settings, "SUBSCRIPTION_MINI_APP_URL", None) or "").strip()
+    if not token or not base:
+        return None
+    parts = urlsplit(base)
+    if parts.scheme and parts.netloc:
+        public_base = urlunsplit((parts.scheme, parts.netloc, "", "", ""))
+    else:
+        public_base = base.rstrip("/")
+    return f"{public_base.rstrip('/')}/s/{quote(token)}"