backend rework- full test 1

modules/persistence.py

@@ -0,0 +1,23 @@
+import os
+import json
+from datetime import datetime
+
+BASE_PATH = os.path.join(os.path.dirname(__file__), "..", "persistence")
+BASE_PATH = os.path.abspath(BASE_PATH)
+
+
+def save_dict(name, data):
+    path = os.path.join(BASE_PATH, f"{name}.json")
+    os.makedirs(BASE_PATH, exist_ok=True)
+    with open(path, "w") as f:
+        json.dump(data, f, default=str, indent=2)
+
+def load_dict(name):
+    path = os.path.join(BASE_PATH, f"{name}.json")
+    if os.path.exists(path):
+        with open(path, "r") as f:
+            return json.load(f)
+    return {}  # fallback falls Datei fehlt
+
+# no persistence but global variable important for tracking the esp-connection over runtime
+esp_conn_infos = {"ip_global": None, "ip_local": None, "last_seen": None, "connection_valid": False}