install-utility

#!/bin/bash

set -e

############################## DEFAULT PARAMETERS ##############################

# Indicates whether we want to install or remove one or multiple packages
# TODO: Also autoremove can be used, to force additional cleanup
install_remove="install"

# The list of packages to install in a single apt command
list_apt_packages=""

# If set to 1 local alternatives to packages are ignored
no_alternative='0'

# Check arguments only
dry_run='0'

# TODO: something to set a shell as default

################################# PACKET LISTS #################################

# Predefined lists of packets (substitute _ with - when using the script)
exfat="exfat-fuse exfat-utils"
sysperf="htop hwloc cpufrequtils stress"
p7zip="p7zip-full p7zip-rar"
gnome_extras="gnome-tweak-tool gnome-sushi gparted"
utils="tree mlocate gnuplot grub-customizer"
shells="zsh"

# This is too long, broken in two assignments
dev="git build-essential module-assistant cmake apt-file linux-headers-generic"
dev="$dev manpages-posix manpages-posix-dev colordiff valgrind"

############################# PACKET ALTERNATIVES ##############################

# Default alternatives to actual packages (can be ignored with --no-alternative)
vim="vim-gtk3"

########################### OTHER SUPPORTED PACKAGES ###########################

# Other known supported packets
# handbrake handbrake-cli, spotify-client, vlc, grub-customizer, google-chrome,
# audacity, skype/skypeforlinux, telegram/telegram-desktop, nodejs, blender
# TODO: FOR NOW BLENDER IS PROVIDED FROM UNIVERSE, NOT FROM ppa:thomas-schiex/blender
# TODO: obs-studio, synergy, clion, mailspring, android-studio, android-sys-dev
# TODO: kodi?, albert?, docker? (unsupported on eoan by default)

################# FULL LIST OF AVAILABLE INSTALLABLE PACKAGES ##################
### CAN BE USED TO INSTALL EVERYTHING IN THE SYSTEM, USE WITH CAUTION THOUGH ###

full="$exfat $sysperf $p7zip $gnome_extras $utils $shells $dev vim"
full_others="telegram google-chrome code skype" # TODO: nativefier-whatsapp nativefier-overleaf

################################## VARIABLES ###################################

# List of packages to install
packages=""

# List of other kinds of packages to install manually
# (not to be included in a single apt call)
other_packages=""

################################## FUNCTIONS ###################################

function toshortopt() {
    case $1 in
        --autoremove)       echo '-a'   ;;
        --remove)           echo '-r'   ;;
        --no-alternative)   echo '-N'   ;;
        --dry-run)          echo '-D'   ;;
        --help)             echo '-h'   ;;
        *)                  echo "$1"   ;;
    esac
}

function tolongopt() {
    case $1 in
        -a) echo '--autoremove'     ;;
        -r) echo '--remove'         ;;
        -N) echo '--no-alternative' ;;
        -D) echo '--dry-run'        ;;
        -h) echo '--help'           ;;
        *)  echo "$1" ;;
    esac
}


function parse_parameters() {
    # With this we convert all parameters to short options,
    # to use getopts to parse them
    for arg in "$@" ; do
        shift
        set -- "$@" "`toshortopt "$arg"`"
    done
    
    OPTMAX="$#"
    OPTIND=1
    while [ $OPTIND -le $OPTMAX ] ;
    do
        # Use getopts to parse parameters
        while getopts "ahrDN" opt ;
        do
            case "${opt}" in
            a)
                install_remove='autoremove'
                ;;
            r)
                install_remove='remove'
                ;;
            N)
                no_alternative='1'
                ;;
            D)
                dry_run='1'
                ;;
            h)
                # Print help and terminate script
                print_help
                exit 0
                ;;
            esac
        done
        
        # Parse other long parameters
        while [ $OPTIND -le $OPTMAX ] && ! [ "`echo "${!OPTIND}" | cut -c1-1`" = '-' ] ;
        do
            current="${!OPTIND}"
            case "$current" in
                exfat)
                    packages="$packages $exfat"
                    ;;
                sysperf)
                    packages="$packages $sysperf"
                    ;;
                p7zip)
                    packages="$packages $p7zip"
                    ;;
                gnome-extras)
                    packages="$packages $gnome_extras"
                    ;;
                utils)
                    packages="$packages $utils"
                    ;;
                shells)
                    packages="$packages $shells"
                    ;;
                dev)
                    packages="$packages $dev"
                    ;;
                full)
                    packages="$packages $full"
                    ;;
                # Following ones are alternatives, they can be disabled
                vim)
                    if [ "$no_alternative" -eq "0" ] ; then
                        packages="$packages $vim"
                    else
                        packages="$packages vim"
                    fi
                    ;;
                # Packages that cannot be installed with apt directly
                telegram|telegram-desktop)
                    other_packages="$other_packages telegram"
                    ;;
                google-chrome)
                    packages="$packages chrome-gnome-shell"
                    other_packages="$other_packages google-chrome"
                    ;;
                code)
                    other_packages="$other_packages code"
                    ;;
                skype|skypeforlinux)
                    other_packages="$other_packages skype"
                    ;;
                nativefier-whatsapp)
                    packages="$packages nodejs git"
                    other_packages="$other_packages nativefier webinstall nativefier-whatsapp"
                    ;;
                nativefier-overleaf)
                    packages="$packages nodejs git"
                    other_packages="$other_packages nativefier webinstall nativefier-overleaf"
                    ;;
                nativefier|webinstall)
                    packages="$packages nodejs git"
                    other_packages="$other_packages nativefier webinstall"
                    ;;
                # Unrecognized strings that do not start with -            
                *)
                    # Any unrecognized parameter will be forwarded to APT, use with caution!
                    # If this is a known package name then it's fine.
                    packages="$packages $current"
                    ;;
            esac
            
            OPTIND=$((OPTIND + 1))
        done
        
        # Start again if not done
    done
}

function print_help() {
    # TODO:
    echo "This is a very helpful help output!"
}

function ask_sudo_passwd() {
    echo "You will be prompted to insert your sudo password, this is needed to "
    echo "avoid prompting you when there is actually something to do"
    echo "YOU CAN CHECK THE SOURCE OF THIS SCRIPT FOR THE FUNCTION ask_sudo_passwd AND NOTICE THAT THERE IS NOTHING MALICIOUS WITH THIS"
    echo ""
    echo "Also please, avoid locking your pc during the installation, otherwise some commands may get stuck on sudo prompts..."
    echo ""
    echo "Enter your sudo password now:"
    sudo echo ""
    echo ""
    echo "Thank you!"
    echo ""
}

function repositories() {
    # Enable standard repositories
    sudo apt-add-repository main --no-update -y
    sudo apt-add-repository universe --no-update -y
    sudo apt-add-repository restricted --no-update -y
    sudo apt-add-repository multiverse --no-update -y
}

function install_pre_execute() {
    for package_name in $packages $other_packages ; do
        echo "PRE-EXECUTING $package_name"
        case "$package_name" in
            gimp)
                if [ "$no_alternative" -eq "0" ] ; then
                    sudo add-apt-repository ppa:otto-kesselgulasch/gimp -y --no-update
                fi
                ;;
            spotify-client)
                install_repo_spotify
                ;;
            nodejs)
                install_repo_nodejs
                ;;
        esac
    done
}

function install_post_execute() {
    echo ""
}

function install_packages() {
    # First print what will be done:
    echo "INSTALLING THE FOLLOWING PACKAGES"
    echo "["
    echo "$packages"
    echo "]"

    # Install command
    sudo apt update
    sudo apt install -y $packages
}

function install_others() {
    echo "INSTALLING THE FOLLOWING PACKAGES"
    echo "["
    echo "$other_packages"
    echo "]"

    for package_name in $other_packages ; do
        case "$package_name" in
            telegram)
                install_telegram
                ;;
            google-chrome)
                download_install "google-chrome" "https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb"
                ;;
            code)
                download_install "code" "https://go.microsoft.com/fwlink/?LinkID=760868"
                ;;
            skype)
                # TODO: add an alias because skypeforlinux is a terrible command
                download_install "skype" "https://go.skype.com/skypeforlinux-64.deb"
                ;;
            webinstall)
                cd /tmp
                git clone https://gist.github.com/684882880c8c057858732b5e40032aa8.git webinstall
                sudo cp webinstall/webinstall /usr/local/bin/webinstall
                sudo chmod a+x /usr/local/bin/webinstall
                rm -r -f webinstall
                cd - > /dev/null
                ;;
            nativefier-whatsapp)
                echo "If your language is different than English or Italian, WhatsApp won't work!"
                echo "" > /tmp/whatsapp-fix.js
                echo "if (document.body.innerText.replace(/\n/g, ' ').search(/WHATSAPP WEB.*whatsapp works with.*to use whatsapp.*update/i) === 0)" >> /tmp/whatsapp-fix.js
                echo "navigator.serviceWorker.getRegistration().then(function (r) { r.unregister(); document.location.reload() });" >> /tmp/whatsapp-fix.js
                echo "if (document.body.innerText.replace(/\n/g, ' ').search(/WHATSAPP WEB.*whatsapp.*funziona.*per usare whatsapp.*aggiorna/i) === 0)" >> /tmp/whatsapp-fix.js
                echo "navigator.serviceWorker.getRegistration().then(function (r) { r.unregister(); document.location.reload() });" >> /tmp/whatsapp-fix.js

                webinstall -n Whatsapp --tray --single-instance --inject /tmp/whatsapp-fix.js web.whatsapp.com
                rm /tmp/whatsapp-fix.js
                ;;
            nativefier-overleaf)
                webinstall -n Overleaf www.overleaf.com
                ;;
            nativefier)
                sudo npm install nativefier -g
                ;;

            *)
                echo "Error: unrecognized package $package_name"
                ;;
        esac
    done
}

function download_install() {
    # Argument 1 is the readable name for the user
    # Argument 2 is the link for download
    # They are both required
    
    echo "Installing $1..."

	wget $2 -O /tmp/temp_installer.deb
    sudo dpkg -i /tmp/temp_installer.deb || sudo apt-get install -f -y
	rm /tmp/temp_installer.deb
}

function install_repo_spotify() {
    curl -sS https://download.spotify.com/debian/pubkey.gpg | sudo apt-key add -
    echo "deb http://repository.spotify.com stable non-free" | sudo tee /etc/apt/sources.list.d/spotify.list
}
function install_repo_nodejs() {
    curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
}

function install_telegram() {    
    cd /tmp
    wget https://telegram.org/dl/desktop/linux -O tsetup.tar.xz
    tar xf tsetup.tar.xz
    sudo mv -f Telegram /opt/
    sudo ln -fs /opt/Telegram/Telegram /usr/local/bin/telegram
    sudo ln -fs /opt/Telegram/Telegram /usr/local/bin/telegram-desktop
        
    # Not really secure, how else can I enable the updater while being still secure? ACL?
    sudo chmod -R a+w /opt/Telegram/*
    rm tsetup.tar.xz
    cd -
    
    echo "Installed Telegram. Start it with telegram or telegram-desktop."
}


############################### MAIN SCRIPT FLOW ###############################

parse_parameters "$@"

# Sort and filter-out duplicates
packages=$(echo $packages | xargs -n1 | sort -u | xargs)

# Actual installation commands for (most) packages
if [ "$dry_run" = "1" ] ; then
    echo "PRINTING CONFIGURATION:"
    echo "LIST OF ALL PACKAGES TO INSTALL:"
    echo "$packages"
    exit 0
fi

ask_sudo_passwd
repositories
install_pre_execute
install_packages
install_post_execute
install_others