Initial commit: VoIdeaAI - voice-first AI idea assistant

app/integrations/telegram/auth.py

@@ -0,0 +1,27 @@
+"""Telegram ↔ VoIdea account linking."""
+
+from __future__ import annotations
+
+import secrets
+from typing import Any
+
+# In-memory store for link tokens (in production: Redis with TTL)
+_link_tokens: dict[str, int] = {}  # token → user_id
+
+
+def create_link_token(user_id: int) -> str:
+    """Generate a one-time token for linking Telegram to VoIdea account."""
+    token = secrets.token_urlsafe(32)
+    _link_tokens[token] = user_id
+    return token
+
+
+def consume_link_token(token: str) -> int | None:
+    """Validate and consume a link token. Returns user_id or None."""
+    user_id = _link_tokens.pop(token, None)
+    return user_id
+
+
+def get_bot_link_url(base_url: str, token: str) -> str:
+    """Return the URL for the user to confirm account linking."""
+    return f"{base_url}/bot/link?token={token}"