#!/bin/bash

##############################################
# lf-updr - Linux Firmware Updater Installer #
# Author: q3aql@duck.com                     #
# License: GPLv2.0                           #
##############################################

# Repo Linux Firmware
repo_firmware="https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git"
branch="main"
dir_repo="/lib/firmware"

echo "** lf-updr - Linux Firmware Updater **"
echo ""

# Check if process have root permissions
mkdir -p /etc/root &> /dev/null
administrador=$?
if [ ${administrador} -eq 0 ] ; then
  rm -rf /etc/root
else
  echo "* Root permissions are required"
  exit
fi

# Check dependencies
path_check="/usr/bin /usr/sbin/ /bin /sbin/ /usr/local/bin $HOME/.local/bin $(brew --prefix 2> /dev/null)/bin"
dependencies="git update-initramfs"
dependencies_found=""
dependencies_not_found=""
for checkPath in $path_check ; do
  for checkDependencies in $dependencies ; do
    if [ -f $checkPath/$checkDependencies ] ; then
      dependencies_found="$dependencies_found $checkDependencies"
    fi
  done
done
for notFound in $dependencies ; do
  check_found_one=$(echo $dependencies_found | grep " $notFound")
  check_found_two=$(echo $dependencies_found | grep "$notFound ")
  if_not_found="$check_found_one$check_found_two"
  if [ -z "$if_not_found" ] ; then
    dependencies_not_found="$dependencies_not_found $notFound"
  fi
done
# Show if all tools are installed
if [ -z "$dependencies_not_found" ] ; then
  echo > /dev/null
else
  echo "* Some required tools are not installed:$dependencies_not_found"
  exit 1
fi

# Install linux-firmware
if [ -d ${dir_repo} ] ; then
  echo "* Moving ${dir_repo} to ${dir_repo}.old"
  rm -rf ${dir_repo}.old
  mv ${dir_repo} ${dir_repo}.old
fi
echo "* Cloning linux-firmware to ${dir_repo}"
git clone ${repo_firmware} ${dir_repo}
error_cloning=$?
if [ ${error_cloning} -ne 0 ] ; then
  echo "* Error: Fail cloning linux-firmware"
  echo "* Rolling back ${dir_repo}.old"
  mv ${dir_repo}.old ${dir_repo}
  exit 1
fi

# Install script and cron
if [ -f "$(dirname $0)/lf-updr.sh" ] ; then
  echo "* Installing /usr/bin/lf-updr"
  cp -rf $(dirname $0)/lf-updr.sh /usr/bin/lf-updr
  chmod +x /usr/bin/lf-updr
else
  echo "* Error installing /usr/bin/lf-updr"
  echo "* File $(dirname $0)/lf-updr.sh not found"
  exit 1
fi
if [ -f "$(dirname $0)/lf-updr" ] ; then                                                                                                                                                                             
  echo "* Installing /etc/cron.d/lf-updr"
  cp -rf $(dirname $0)/lf-updr /etc/cron.d/lf-updr                                                                                                                                                    
  chmod 644 /etc/cron.d/lf-updr                                                                                                                                                                        
else
  echo "* Error installing /etc/crond./lf-updr"
  echo "* File $(dirname $0)/lf-updr not found"
  exit 1
fi

# Run update-initramfs
echo "* Running update-initramfs"
if [ -x /usr/sbin/update-initramfs ]; then
  /usr/sbin/update-initramfs -u -k all
fi