srv/poe_manager/app.py

@@ -81,6 +81,38 @@ def logout():
     logout_user()
     return redirect(url_for('login'))
 
+import glob
+from datetime import datetime
+
+def get_last_seen(dev_name: str):
+    """Letztes Mal, dass ein Gerät erreichbar war."""
+    log_files = glob.glob("/var/log/rpi-*.log")
+    if not log_files:
+        return None
+
+    latest_time = None
+
+    # alle Logs durchgehen
+    for logfile in sorted(log_files):
+        with open(logfile, "r") as f:
+            for line in f:
+                line = line.strip()
+                if f"{dev_name} ist erreichbar!" in line:
+                    try:
+                        ts_str = line.split(" ")[0] + " " + line.split(" ")[1]  # "YYYY-MM-DD HH:MM:SS"
+                        ts = datetime.strptime(ts_str, "%Y-%m-%d %H:%M:%S")
+                        if latest_time is None or ts > latest_time:
+                            latest_time = ts
+                    except Exception:
+                        continue
+
+    if latest_time:
+        date_str = latest_time.strftime("Zuletzt Online am %d.%m.%Y")
+        time_str = latest_time.strftime("um %H:%M Uhr")
+        return date_str, time_str
+
+    return None
+
 @app.route("/")
 @login_required
 def index():
@@ -112,8 +144,21 @@ def index():
                     elif f"{dev[1]} ist nicht erreichbar!" in line:
                         status_dict[dev[0]] = "offline"
 
+    last_seen_dict = {}
+
+    for dev in devices:
+        # Status aus Log ermitteln
+        status_dict[dev[0]] = "offline" if f"{dev[1]} ist nicht erreichbar!" in open(max(glob.glob('/var/log/rpi-*.log'), key=os.path.getctime)).read() else "online"
+
+        # Last Seen nur, wenn offline
+        if status_dict[dev[0]] == "offline":
+            last_seen = get_last_seen(dev[1])  # dev[1] = Device Name
+            if last_seen:
+                last_seen_dict[dev[0]] = last_seen
+
+
     # Template rendern mit Devices, Status und Intervall
-    return render_template("index.html", devices=devices, status=status_dict, interval=interval)
+    return render_template("index.html", devices=devices, status=status_dict, last_seen=last_seen_dict, interval=interval)
 
 @app.route("/settings", methods=["GET", "POST"])
 @login_required