#!/usr/bin/sh

set -e
set -u

BOOT=$(/usr/bin/grep '/boot' '/etc/fstab' | /usr/bin/mawk '$1 !~ /^#/ && $2 ~ /^[/]/ {print $2}')
/usr/bin/test -n "${BOOT}"

case "${1}" in
  install)
    /usr/bin/sed --in-place 's/dtparam=i2c_arm=off/dtparam=i2c_arm=on/' "${BOOT}/config.txt"
    /usr/bin/sed --in-place 's/ console=ttyS1,115200//' "${BOOT}/cmdline.txt"
    /usr/bin/echo ''
    /usr/bin/echo '##########################################################'
    /usr/bin/echo '#                                                        #'
    /usr/bin/echo '# ! Restart the device to load the necessary functions ! #'
    /usr/bin/echo '#                                                        #'
    /usr/bin/echo '##########################################################'
    /usr/bin/echo ''
  ;;
esac