feat: KX-Bridge 0.9.0-beta1 – initiales Release-Repo

env_loader.py

@@ -0,0 +1,46 @@
+"""
+env_loader.py – lädt Verbindungsparameter aus .env (Repo-Root oder Arbeitsverzeichnis).
+Umgebungsvariablen haben Vorrang vor .env-Werten.
+"""
+import os
+import pathlib
+
+
+def _find_env_file() -> pathlib.Path | None:
+    # Suche .env im selben Verzeichnis, dann im Parent (Repo-Root)
+    for base in (pathlib.Path(__file__).parent, pathlib.Path(__file__).parent.parent):
+        p = base / ".env"
+        if p.is_file():
+            return p
+    return None
+
+
+def _load_env_file(path: pathlib.Path):
+    with open(path, encoding="utf-8") as f:
+        for line in f:
+            line = line.strip()
+            if not line or line.startswith("#") or "=" not in line:
+                continue
+            key, _, val = line.partition("=")
+            key = key.strip()
+            val = val.strip()
+            if key and key not in os.environ:
+                os.environ[key] = val
+
+
+_env_path = _find_env_file()
+if _env_path:
+    _load_env_file(_env_path)
+
+
+def get(key: str, default: str = "") -> str:
+    return os.environ.get(key, default)
+
+
+# Häufig verwendete Shortcuts
+PRINTER_IP   = get("PRINTER_IP",   "")
+MQTT_PORT    = int(get("MQTT_PORT", "9883"))
+USERNAME     = get("MQTT_USERNAME", "")
+PASSWORD     = get("MQTT_PASSWORD", "")
+MODE_ID      = get("MODE_ID",      "")
+DEVICE_ID    = get("DEVICE_ID",    "")