install.sh

#!/bin/bash

# set the DBUS_SESSION_BUS_ADDRESS variable. By default cron does not have access to the variable.
mkdir $HOME/.dbus
touch $HOME/.dbus/Xdbus
chmod 600 $HOME/.dbus/Xdbus
env | grep DBUS_SESSION_BUS_ADDRESS > $HOME/.dbus/Xdbus
echo 'export DBUS_SESSION_BUS_ADDRESS' >> $HOME/.dbus/Xdbus

# install sox (an app to play music from terminal)
echo "Enter root password to install dependencies"
sudo pacman -S sox

# location of script
address=$(readlink -f eye_care.sh)

# enable cron service
echo "enabling cron.service ..."
sudo systemctl enable --now cronie.service

# set cron to run app at startup
crontab -l > .cron
echo "*/20 * * * * $address" >> .cron
crontab .cron
rm .cron

# set location of notification sound
sound_pwd=$(readlink -f eye_care_song.mp3)
echo "play $sound_pwd" | sed -i '15r /dev/stdin' ./eye_care.sh

# final reasult
if [ $? -eq 0 ]; then
    echo "Eye care 20 20 20 Installed Succefully"
else
    echo "Installation failed"
fi