#!/bin/bash
# -------------------------------------------
# Script: Dynamic Light Adjustment
# Author: Michael
# Created: 2025-01-02
# Purpose: Adjust light color temperature and brightness dynamically while ioBroker state is true.
# Usage: ./dynamic_light_adjustment.sh
# -------------------------------------------

# Konfiguration
STATE_ID="zigbee.0.04cd15fffee03198.state"
BRIGHTNESS_ID="zigbee.0.04cd15fffee03198.brightness"
COLORTEMP_ID="zigbee.0.04cd15fffee03198.colortemp"

BRIGHTNESS_MIN=0
BRIGHTNESS_MAX=100
COLORTEMP_MIN=0
COLORTEMP_MAX=1600

STEP_BRIGHTNESS=5
STEP_COLORTEMP=80

# Funktion: State abrufen
get_state() {
    # Hole den JSON-Wert und prüfe, ob "val" true ist
    state_value=$(iobroker state get "$STATE_ID" | grep -oP '"val":\s*\K(true|false)')
    [[ "$state_value" == "true" ]]
}

# Funktion: Brightness setzen
set_brightness() {
    /usr/bin/iobroker state set "$BRIGHTNESS_ID" "$1"
    echo "Set brightness to $1"
}

# Funktion: Colortemp setzen
set_colortemp() {
    /usr/bin/iobroker state set "$COLORTEMP_ID" "$1"
    echo "Set colortemp to $1"
}

# Initialwerte
current_brightness=$BRIGHTNESS_MIN
current_colortemp=$COLORTEMP_MAX
brightness_increasing=true
colortemp_increasing=false

# Licht einmal einschalten, falls der State aktiv ist
set_brightness $BRIGHTNESS_MIN
set_colortemp $COLORTEMP_MAX
/usr/bin/iobroker state set "$STATE_ID" true
echo "Initial light settings applied."

# Hauptschleife
while get_state; do
    # Helligkeit anpassen
    if $brightness_increasing; then
        current_brightness=$((current_brightness + STEP_BRIGHTNESS))
        if [ $current_brightness -ge $BRIGHTNESS_MAX ]; then
            brightness_increasing=false
        fi
    else
        current_brightness=$((current_brightness - STEP_BRIGHTNESS))
        if [ $current_brightness -le $BRIGHTNESS_MIN ]; then
            brightness_increasing=true
        fi
    fi
    set_brightness $current_brightness

    # Farbtemperatur anpassen
    if $colortemp_increasing; then
        current_colortemp=$((current_colortemp - STEP_COLORTEMP))
        if [ $current_colortemp -le $COLORTEMP_MIN ]; then
            colortemp_increasing=false
        fi
    else
        current_colortemp=$((current_colortemp + STEP_COLORTEMP))
        if [ $current_colortemp -ge $COLORTEMP_MAX ]; then
            colortemp_increasing=true
        fi
    fi
    set_colortemp $current_colortemp

    # Wartezeit für sanfte Übergänge
    sleep 1
done

# Beenden
echo "State is false. Exiting script."