NightSwitcher

#!/bin/bash
echo "Hello, let's configure night mode!"
echo "Brightness - 0; Red light - 1"
read var1
if [[ $var1 == "0" ]]
then

    #Brightness tweaks
    echo "Brightness tweaks"
    monitor=$(xrandr | grep " connected" | cut -f1 -d " ")
    echo "Enter value of brightness (20-99) or 1 for maximum value"
    read br
    if [[ "$br" == "1" ]]
    then
        xrandr --output $monitor --brightness $br
    else
        xrandr --output $monitor --brightness 0.$br
    fi
else
    #Turn on red light
    echo 1 - low night mode
    echo 2 - middle night mode
    echo 3 - hard night mode
    read var
    gsettings set org.gnome.settings-daemon.plugins.color night-light-enabled true
    if [[ $var == "1" ]]
    then
        gsettings set org.gnome.settings-daemon.plugins.color night-light-temperature 5000
    elif [[ $var == "2" ]]
    then
        gsettings set org.gnome.settings-daemon.plugins.color night-light-temperature 4000
    else
        echo "Hard night-light activated"
        gsettings set org.gnome.settings-daemon.plugins.color night-light-temperature 2000
    fi
fi