#!/bin/bash
# temp-watch.sh — Temperaturüberwachung mit Desktop-Notification
# Systemd-Service oder XFCE Autostart
# Warnt bei CPU-Temperatur > THRESHOLD Grad Celsius

THRESHOLD=85
INTERVAL=30

while true; do
    TEMP=$(sensors 2>/dev/null | grep -E "Core 0|Package id" | grep -oP '\+\K[0-9.]+' | sort -n | tail -1)

    if [[ -n "$TEMP" ]] && (( $(echo "$TEMP > $THRESHOLD" | bc -l) )); then
        # Aktuellen Desktop-User ermitteln
        DESK_USER=$(who | grep -m1 '(:0)' | awk '{print $1}')
        if [[ -n "$DESK_USER" ]]; then
            USER_ID=$(id -u "$DESK_USER")
            DISPLAY=:0 DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/${USER_ID}/bus" \
            sudo -u "$DESK_USER" notify-send \
                -u critical \
                -i dialog-warning \
                "🌡 CPU-Temperatur kritisch" \
                "${TEMP}°C — Lüfter prüfen!\nmbpfan: $(systemctl is-active mbpfan)"
        fi
    fi

    sleep "$INTERVAL"
done