grub2-themes/install.sh

#!/bin/bash

# Grub2 Dark Theme 


ROOT_UID=0
THEME_DIR="/boot/grub/themes"
THEME_DIR_2="/boot/grub2/themes"

REO_DIR=$(cd $(dirname $0) && pwd)

MAX_DELAY=20                                        # max delay for user to enter root password 

#COLORS  
CDEF=" \033[0m"                                     # default color 
CCIN=" \033[0;36m"                                  # info color 
CGSC=" \033[0;32m"                                  # success color 
CRER=" \033[0;31m"                                  # error color 
CWAR=" \033[0;33m"                                  # waring color 
b_CDEF=" \033[1;37m"                                # bold default color 
b_CCIN=" \033[1;36m"                                # bold info color 
b_CGSC=" \033[1;32m"                                # bold success color 
b_CRER=" \033[1;31m"                                # bold error color
b_CWAR=" \033[1;33m"                                # bold warning color 

# echo like ...  with  flag type  and display message  colors  
prompt () {                                         
    case ${1} in
        "-s"|"--success")
            echo -e "${b_CGSC}${@/-s/}${CDEF}";;    # print success message 
        "-e"|"--error")  
            echo -e "${b_CRER}${@/-e/}${CDEF}";;    # print error message 
        "-w"|"--warning")  
            echo -e "${b_CWAR}${@/-w/}${CDEF}";;    # print warning message 
        "-i"|"--info")
            echo -e "${b_CCIN}${@/-i/}${CDEF}";;    # print info message 
        *)
            echo -e "$@"
            ;; 
    esac 
}


#  print "GRUB THEME"   whene the script is launched                             
ascii_art_header ()  { 
    [[ -f README.md ]] && {             
        header_title=$(sed -n 2,8p README.md) 
        prompt -i "$header_title" 
    }     
} 
#ascii_art_header                                    # uncomment this line to show Grub theme ascii art 


# Check command avalibility
function has_command() {
  command -v $1 > /dev/null
}


usage() {
  printf "%s\n" "Usage: ${0##*/} [OPTIONS...]"
  printf "\n%s\n" "OPTIONS:"
  printf "  %-25s%s\n" "-l, --slaze" "slaze grub theme"
  printf "  %-25s%s\n" "-s, --stylish" "stylish grub theme"
  printf "  %-25s%s\n" "-t, --tela" "tela grub theme"
  printf "  %-25s%s\n" "-v, --vimix" "vimix grub theme"
  printf "  %-25s%s\n" "-h, --help" "Show this help"
}

install() {

  if [[ ${theme} == 'slaze' ]]; then
    local name="Slaze"
  elif [[ ${theme} == 'stylish' ]]; then
    local name="Stylish"
  elif [[ ${theme} == 'tela' ]]; then
    local name="Tela"
  elif [[ ${theme} == 'vimix' ]]; then
    local name="Vimix"
  else
    echo -e "\n Please run ./install.sh with option, run ./install.sh -h for help!"
    exit 0
  fi 
    
 
  # Checking for root access and proceed if it is present
  if [ "$UID" -eq "$ROOT_UID" ]; then

    # Create themes directory if not exists
    echo -e "\n Checking for the existence of themes directory..."
    [[ -d ${THEME_DIR}/${name} ]] && rm -rf ${THEME_DIR}/${name}
    [[ -d ${THEME_DIR_2}/${name} ]] && rm -rf ${THEME_DIR_2}/${name}
    [[ -d /boot/grub ]] && mkdir -p ${THEME_DIR}/${name}
    [[ -d /boot/grub2 ]] && mkdir -p ${THEME_DIR_2}/${name}

    # Copy theme
    prompt -i "Installing ${name} theme..."

    if [ -d /boot/grub ]; then
      cp -a ${REO_DIR}/common/* ${THEME_DIR}/${name}
      cp -a ${REO_DIR}/backgrounds/background-${theme}.jpg ${THEME_DIR}/${name}/background.jpg

      if [ ${theme} == 'tela' ]; then
        cp -a ${REO_DIR}/assets/assets-tela/icons ${THEME_DIR}/${name}
        cp -a ${REO_DIR}/assets/assets-tela/select/*.png ${THEME_DIR}/${name}
      else
        cp -a ${REO_DIR}/assets/assets-white/icons ${THEME_DIR}/${name}
        cp -a ${REO_DIR}/assets/assets-white/select/*.png ${THEME_DIR}/${name}
      fi
    fi

    if [ -d /boot/grub2 ]; then
      cp -a ${REO_DIR}/common/* ${THEME_DIR_2}/${name}
      cp -a ${REO_DIR}/backgrounds/background-${theme}.jpg ${THEME_DIR_2}/${name}/background.jpg

      if [ ${theme} == 'tela' ]; then
        cp -a ${REO_DIR}/assets/assets-tela/icons ${THEME_DIR_2}/${name}
        cp -a ${REO_DIR}/assets/assets-tela/select/*.png ${THEME_DIR_2}/${name}
      else
        cp -a ${REO_DIR}/assets/assets-white/icons ${THEME_DIR_2}/${name}
        cp -a ${REO_DIR}/assets/assets-white/select/*.png ${THEME_DIR_2}/${name}
      fi
    fi

    # Set theme
    prompt -i "Setting ${name} as default..."
    grep "GRUB_THEME=" /etc/default/grub 2>&1 >/dev/null && sed -i '/GRUB_THEME=/d' /etc/default/grub

    [[ -d /boot/grub ]] && echo "GRUB_THEME=\"${THEME_DIR}/${name}/theme.txt\"" >> /etc/default/grub
    [[ -d /boot/grub2 ]] && echo "GRUB_THEME=\"${THEME_DIR_2}/${name}/theme.txt\"" >> /etc/default/grub

    # Update grub config
    prompt -i "Updating grub config..."
    if has_command update-grub; then
        update-grub 
    elif has_command grub-mkconfig; then
      grub-mkconfig -o /boot/grub/grub.cfg
    elif has_command grub2-mkconfig; then
      grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
    fi

    # Success message
    prompt -s "All done!"

  else
    # Error message
    prompt -e "\n[ E r r o r ] -> Run me as root "
    
    # persisted execution of the script as root 
    read -p "[ trusted ] specify the root password : " -t${MAX_DELAY} -s 
    [[ -n "$REPLY" ]]&& { 
        if  [[  -n  "${theme}" ]]  ; then 
            sudo -S <<< $REPLY $0 --${theme} 
        fi 
    }|| {
       prompt  "\n Operation canceled  Bye" 
       exit 1 
    }
  fi
}

# show terminal user interface for better use 
if [[ $# -lt 1 ]]  ;then 
    if [[ -x /usr/bin/dialog ]] ; then 
        tui=$(dialog --backtitle "Grub 2 Themes" \
      --radiolist "Choose your Grub theme : " 15 40 5 \
     1 "Slaze Theme" off  \
     2 "Stylish Theme" on \
     3 "Tela Theme" off  \
     4 "Vimix Theme" off --output-fd 1 ) 
   case "$tui" in
       1) theme="slaze"     ;; 
       2) theme="stylish"   ;;
       3) theme="tela"      ;; 
       4) theme="vimix"     ;; 
       *) prompt "Canceled" ;; 
    esac 

    fi 
fi  
while [[ $# -ge 1 ]]; do
    case "${1}" in
        -l|--slaze)
            theme='slaze'
            ;;
        -s|--stylish)
            theme='stylish'
            ;;
        -t|--tela)
            theme='tela'
            ;;
        -v|--vimix)
            theme='vimix'
            ;;
        -h|--help)
            usage
            exit 0
            ;;
        *)
            prompt  -e "ERROR: Unrecognized installation option '$1'."
            prompt  -i "Try '$0 --help' for more information."
            exit 1
            ;;
    esac 
    shift  
done

install