Vermietungs-Tool

A local web app for a small room-rental business in Austria: guest register,
room ledger, occupancy plan, invoices, the monthly tourist-tax report and the
quarterly VAT list. Application code only; it ships no data.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/config.py

@@ -0,0 +1,23 @@
+"""Settings that must not live in git — database URLs. Read from the environment first, else from the
+git-ignored `.env` at the repo root (KEY=VALUE lines, # comments)."""
+import os
+from functools import lru_cache
+from pathlib import Path
+
+ENV_FILE = Path(__file__).resolve().parents[1] / ".env"
+
+
+@lru_cache(maxsize=1)
+def _values():
+    values = {}
+    if ENV_FILE.exists():
+        for line in ENV_FILE.read_text(encoding="utf-8").splitlines():
+            line = line.strip()
+            if line and not line.startswith("#") and "=" in line:
+                key, value = line.split("=", 1)
+                values[key.strip()] = value.strip()
+    return values
+
+
+def get(key, default=None):
+    return os.environ.get(key) or _values().get(key, default)