#!/bin/bash

if [ "$(whoami)" != 'root' ]; then
    echo "Script needs to be run as root"
    exit 1
fi

echo "Creating Python Script...";
cat << 'EOF' > /var/rgb.py
#!/bin/python
import subprocess
import time

steps = 20

colors = [[255, 0, 0], [0, 255, 0], [0, 0, 255], [0, 255, 255], [255, 0, 255], [255, 255, 0], [255, 255, 255]]

def aTob(a, b):
    incr = [(b[0] - a[0]) / steps, (b[1] - a[1]) / steps, (b[2] - a[2]) / steps]
    tmp = [a[0], a[1], a[2]]
    for i in range(steps):
        tmp[0] += incr[0]
        tmp[1] += incr[1]
        tmp[2] += incr[2]
        subprocess.run(f"echo \"{int(tmp[0])} {int(tmp[1])} {int(tmp[2])}\" > /sys/class/leds/rgb:kbd_backlight/multi_intensity", shell=True)
        time.sleep(0.1)

while True:
    c = colors[0]
    for i in range(1, len(colors)):
        aTob(c, colors[i])
        c = colors[i]
    aTob(c, colors[0])
EOF

chmod +x /var/rgb.py

if [ ! $(crontab -l|grep -q "@reboot cd /var && ./rgb.py") ]; then
    echo "Addind Cron job...";
    crontab -l > cronhistory;
    echo "@reboot cd /var && ./rgb.py" >> cronhistory;
    crontab cronhistory
    rm cronhistory
fi

echo "Finished!"