A script to compile a simple google search tool for the terminal

install-search-google.sh

#!/bin/bash

if which tput > /dev/null 2>&1 && [[ $(tput -T$TERM colors) -ge 8 ]] ; then
    FANCY_TERMINAL=true
    LICENSE_SCROLL=0
    RENDERING_LICENSE=false
    HELP_SCROLL=0
    RENDERING_HELP=false
    TERMINAL_WIDTH=$(tput cols)
    TERMINAL_HEIGHT=$(tput lines)
else
    FANCY_TERMINAL=false
fi

WSL_STATUS=false
REQUIRED_PACKAGES=""

if [[ -n "$IS_WSL" || -n "$WSL_DISTRO_NAME" ]] ; then
    WSL_STATUS=true
fi

move_cursor() {
    tput cup $2 $1
}

set_fg_color() {
    tput setaf $1
}

set_bg_color() {
    tput setab $1
}

render_box() {
    printline=""
    for (( i = 0 ; i < "$TERMINAL_WIDTH" ; i++ )) ; do
        printline="$printline-"
    done
    set_fg_color 20
    move_cursor 0 0
    echo "$printline"
    for (( i = 1 ; i < $(("$TERMINAL_HEIGHT" - 2)) ; i++ )) ; do
        move_cursor 0 "$i"
        echo "|"
        move_cursor "$TERMINAL_WIDTH" "$i"
        echo "|"
    done
    move_cursor 0 "$(("$TERMINAL_HEIGHT" - 2))"
    echo $printline
}

render_help_header() {
    set_fg_color 39
    move_cursor "$(("$TERMINAL_WIDTH" / 2 - 23))" 1
    echo "Created by"
    set_fg_color 21
    move_cursor "$(("$TERMINAL_WIDTH" / 2 - 12))" 1
    echo "Jacob Allen Morris"
    set_fg_color 39
    move_cursor "$(("$TERMINAL_WIDTH" / 2 + 7))" 1
    echo "under"
    set_fg_color 160
    move_cursor "$(("$TERMINAL_WIDTH" / 2 + 13))" 1
    echo "MIT license"
    set_fg_color 39
    move_cursor "$(("$TERMINAL_WIDTH" / 2 - 17))" 2
    echo "For help with command do -h <flag>"
}

render_license_header() {
    move_cursor "$(("$TERMINAL_WIDTH" / 2 - 5))" 1
    set_fg_color 160
    echo "MIT License"
    move_cursor "$(("$TERMINAL_WIDTH" / 2 - 18))" 2
    echo "Copyright (c) 2022"
    move_cursor "$(("$TERMINAL_WIDTH" / 2 + 1))" 2
    set_fg_color 21
    echo "Jacob Allen Morris"
}

render_license_scrolled() {
    local license_text=(
        "Permission is hereby granted, free of charge, to any person obtaining a copy"
        "of this software and associated documentation files (the \"Software\"), to deal"
        "in the Software without restriction, including without limitation the rights"
        "to use, copy, modify, merge, publish, distribute, sublicense, and/or sell"
        "copies of the Software, and to permit persons to whom the Software is"    
        "furnished to do so, subject to the following conditions:" 
        "The above copyright notice and this permission notice shall be included in all"
        "copies or substantial portions of the Software."
        "THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR" 
        "IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,"     
        "FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE"  
        "AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER"       
        "LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,"
        "OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE"
        "SOFTWARE."
    )
    set_fg_color 39
    for i in "${!license_text[@]}";
    do
        if [ "$i" -lt $(("$TERMINAL_HEIGHT" - 5 + "$LICENSE_SCROLL")) ] && [ "$i" -gt $(("$LICENSE_SCROLL" - 1)) ] ; then
            move_cursor $(("$TERMINAL_WIDTH" / 2 - ${#license_text[$i]} / 2 - ${#license_text[$i]} % 2)) $((3 + i - "$LICENSE_SCROLL"))
            echo "${license_text[$i]}"
        fi
    done
}

render_help_scrolled() {
    local helptext=(
        "-i : compile/install the script/executable"
        "-h <flag> : help page for script"
        "-l : view license for this script"
        "-f : disable fancy terminal settings"
    )
    set_fg_color 97
    for i in "${!helptext[@]}";
    do
        if [ "$i" -lt $(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL")) ] && [ "$i" -gt $(("$HELP_SCROLL" - 1)) ] ; then
            move_cursor $(("$TERMINAL_WIDTH" / 2 - ${#helptext[$i]} / 2 - ${#helptext[$i]} % 2)) $((3 + i - "$HELP_SCROLL"))
            echo "${helptext[$i]}"
        fi
    done
}

render_help_fancy_scrolled() {
    local helptext=(
        "This flag will simply make the terminal application more basic"
        "(Only use this if you must, I worked hard on this!)"
    )
    set_fg_color 97
    for i in "${!helptext[@]}";
    do
        if [ "$i" -lt $(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL")) ] && [ "$i" -gt $(("$HELP_SCROLL" - 1)) ] ; then
            move_cursor $(("$TERMINAL_WIDTH" / 2 - ${#helptext[$i]} / 2 - ${#helptext[$i]} % 2)) $((3 + i - "$HELP_SCROLL"))
            echo "${helptext[$i]}"
        fi
    done
}

render_help_install_scrolled() {
    local helptext=(
        "This will download using Git, shc, and compile it then proceed to write and compile"
        "script made for easily searching google through your terminal"
    )
    set_fg_color 97
    for i in "${!helptext[@]}";
    do
        if [ "$i" -lt $(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL")) ] && [ "$i" -gt $(("$HELP_SCROLL" - 1)) ] ; then
            move_cursor $(("$TERMINAL_WIDTH" / 2 - ${#helptext[$i]} / 2 - ${#helptext[$i]} % 2)) $((3 + i - "$HELP_SCROLL"))
            echo "${helptext[$i]}"
        fi
    done
}

render_help_license_scrolled() {
    local helptext=(
        "This flag shows the license in it's entierty"
        "(The MIT license to be exact)"
    )
    set_fg_color 97
    for i in "${!helptext[@]}";
    do
        if [ "$i" -lt $(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL")) ] && [ "$i" -gt $(("$HELP_SCROLL" - 1)) ] ; then
            move_cursor $(("$TERMINAL_WIDTH" / 2 - ${#helptext[$i]} / 2 - ${#helptext[$i]} % 2)) $((3 + i - "$HELP_SCROLL"))
            echo "${helptext[$i]}"
        fi
    done
}

is_package_installed() {
    stats=$(dpkg -s "$1" 2> /dev/null | grep "Status")
    if [[ "$stats" == *"installed"* ]] ; then
        echo "Installed"
    else
        echo "Noninstalled"
    fi
}

compile_and_install() {
    INSTALLED_WSLU=false
    if [ "$(whoami)" != "root" ]; then
        echo "To install/compile package, this script must be run as root"
        exit
    fi
    if [ "$WSL_STATUS" == "true" ] && [ "$(which wslview)" == "" ] ; then
        echo "We detected you are using WSL2 and don't have wslu installed, would you like to install it and setup compatability?"
        read -r -n1 -s -p "[Y]es or [N]o" confirmation
        echo ""
        if [ "$confirmation" == "Y" ] || [ "$confirmation" == "y" ] ; then
            if [ ! -f "/etc/wsl.conf" ] ; then
                echo "[interop]" >> /etc/wsl.conf
                echo "enabled=true" >> /etc/wsl.conf
            fi
            apt-add-repository ppa:wslutilities/wslu -y
            apt update
            apt-get install wslu
            wslview -r
            INSTALLED_WSLU=true
        fi
    elif [ "$WSL_STATUS" == "true" ] && [ "$(which wslview)" != "" ] && [ ! -f "/etc/wsl.conf" ] ; then
        echo "We detected you are using WSL2 and don't a certian compatability patch installed, would you like to install it?"
        read -r -n1 -s -p "[Y]es or [N]o" confirmation
        echo ""
        if [ "$confirmation" == "Y" ] || [ "$confirmation" == "y" ] ; then
            if [ ! -f "/etc/wsl.conf" ] ; then
                echo "[interop]" >> /etc/wsl.conf
                echo "enabled=true" >> /etc/wsl.conf
            fi
            wslview -r
            INSTALLED_WSLU=true
        fi
    fi
    cd /tmp || return
    git clone https://github.com/neurobin/shc.git
    cd ./shc || return
    ./configure
    make
    echo "#!/bin/bash" >> /tmp/search-google.sh
    echo "echo \$1 | sed 's/ /%20/g;s/!/%21/g;s/\"/%22/g;s/#/%23/g;s/\$/%24/g;s/\&/%26/g;s/'\''/%27/g;s/(/%28/g;s/)/%29/g;s/:/%3A/g' | xdg-open \"https://www.google.com/search?q=\$1\"" >> /tmp/search-google.sh
    ./src/shc -f /tmp/search-google.sh -o /tmp/search-google
    cd ..
    mv /tmp/search-google /bin/
    rm -rf /tmp/search-google.sh /tmp/shc
    if [ "$INSTALLED_WSLU" == "true" ] ; then
        echo "Due to WSL2 compatability patches, would you allow us to restart WSL2?"
        read -r -n1 -s -p "[Y]es or [N]o" reboot_confirmation
        echo ""
        if [ "$reboot_confirmation" == "Y" ] || [ "$reboot_confirmation" == "y" ] ; then
            echo "Rebooting WSL2 in 5 seconds"
            sleep 5
            /mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe "Start-Process -FilePath \"cmd\" -ArgumentList \"/c wsl.exe -d $WSL_DISTRO_NAME --shutdown\""
        else
            echo "If we cannot reboot, then please reboot yourself when you can using \"wsl --shutdown\""
        fi
    fi
}

help_section() {
    if [ "$FANCY_TERMINAL" == true ] ; then
        clear
        render_box
        render_help_header
        render_help_scrolled
        RENDERING_HELP=true
        while [ "$RENDERING_HELP" == true ]
        do
            read -r -n1
            if [ "$(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL"))" -ge 3 ] ; then
                RENDERING_HELP=false
            else
                HELP_SCROLL=$(("$HELP_SCROLL" + 1))
            fi
            clear
            render_box
            render_help_header
            render_help_scrolled
            if [ "$RENDERING_HELP" == true ] ; then
                sleep 1
            fi
        done
    else
        echo "Created by Jacob Allen Morris under MIT license (Visible with -l flag)"
        echo "For help on a specific flag do \"install-search-google.sh -h (full flag or shorthand here)\""
        echo " "
        echo " "
        echo "Flags included in this script are as follows"
        echo " "
        echo "-i : compile/install the script/executable"
        echo "-h <flag> : help page for script"
        echo "-l : view license for this script"
        echo "-f : disable fancy terminal settings"
    fi
}

help_section_fancy() {
    if [ "$FANCY_TERMINAL" == true ] ; then
        clear
        render_box
        render_help_header
        render_help_fancy_scrolled
        RENDERING_HELP=true
        while [ "$RENDERING_HELP" == true ]
        do
            read -r -n1
            if [ "$(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL"))" -ge 2 ] ; then
                RENDERING_HELP=false
            else
                HELP_SCROLL=$(("$HELP_SCROLL" + 1))
            fi
            clear
            render_box
            render_help_header
            render_help_fancy_scrolled
            if [ "$RENDERING_HELP" == true ] ; then
                sleep 1
            fi
        done
    else
        echo "Created by Jacob Allen Morris under MIT license (Visible with -l flag)"
        echo "For help on a specific flag do \"install-search-google.sh -h (full flag or shorthand here)\""
        echo " "
        echo " "
        echo "This flag will simply make the terminal application more basic"
        echo "(Only use this if you must, I worked hard on this!)"
    fi
}

help_section_install() {
    if [ "$FANCY_TERMINAL" == true ] ; then
        clear
        render_box
        render_help_header
        render_help_install_scrolled
        RENDERING_HELP=true
        while [ "$RENDERING_HELP" == true ]
        do
            read -r -n1
            if [ "$(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL"))" -ge 2 ] ; then
                RENDERING_HELP=false
            else
                HELP_SCROLL=$(("$HELP_SCROLL" + 1))
            fi
            clear
            render_box
            render_help_header
            render_help_install_scrolled
            if [ "$RENDERING_HELP" == true ] ; then
                sleep 1
            fi
        done
    else
        echo "Created by Jacob Allen Morris under MIT license (Visible with -l flag)"
        echo "For help on a specific flag do \"install-search-google.sh -h (full flag or shorthand here)\""
        echo " "
        echo " "
        echo "This will download using Git, shc, and compile it then proceed to write and compile"
        echo "script made for easily searching google through your terminal"
    fi
}

help_section_license() {
    if [ "$FANCY_TERMINAL" == true ] ; then
        clear
        render_box
        render_help_header
        render_help_license_scrolled
        RENDERING_HELP=true
        while [ "$RENDERING_HELP" == true ]
        do
            read -r -n1
            if [ "$(("$TERMINAL_HEIGHT" - 5 + "$HELP_SCROLL"))" -ge 2 ] ; then
                RENDERING_HELP=false
            else
                HELP_SCROLL=$(("$HELP_SCROLL" + 1))
            fi
            clear
            render_box
            render_help_header
            render_help_license_scrolled
            if [ "$RENDERING_HELP" == true ] ; then
                sleep 1
            fi
        done
    else
        echo "Created by Jacob Allen Morris under MIT license (Visible with -l flag)"
        echo "For help on a specific flag do \"install-search-google.sh -h (full flag or shorthand here)\""
        echo " "
        echo " "
        echo "This flag shows the license in it's entierty"
        echo "(The MIT license to be exact)"
    fi
}

license() {
    if [ "$FANCY_TERMINAL" == true ] ; then
        clear
        render_box
        render_license_header
        render_license_scrolled
        RENDERING_LICENSE=true
        while [ "$RENDERING_LICENSE" == true ]
        do
            read -r -n1
            if [ "$(("$TERMINAL_HEIGHT" - 5 + "$LICENSE_SCROLL"))" -ge 15 ] ; then
                RENDERING_LICENSE=false
            else
                LICENSE_SCROLL=$(("$LICENSE_SCROLL" + 1))
            fi
            clear
            render_box
            render_license_header
            render_license_scrolled
            if [ "$RENDERING_LICENSE" == true ] ; then
                sleep 1
            fi
        done
    else
        echo "MIT License"
        echo ""
        echo "Copyright (c) 2022 Jacob Allen Morris"
        echo ""
        echo "Permission is hereby granted, free of charge, to any person obtaining a copy"    #1
        echo "of this software and associated documentation files (the \"Software\"), to deal" #2
        echo "in the Software without restriction, including without limitation the rights"    #3
        echo "to use, copy, modify, merge, publish, distribute, sublicense, and/or sell"       #4
        echo "copies of the Software, and to permit persons to whom the Software is"           #5
        echo "furnished to do so, subject to the following conditions:"                        #6
        echo ""
        echo "The above copyright notice and this permission notice shall be included in all"  #7
        echo "copies or substantial portions of the Software."                                 #8
        echo ""
        echo "THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR"    #9
        echo "IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,"        #10
        echo "FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE"     #11
        echo "AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER"          #12
        echo "LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,"   #13
        echo "OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE"   #14
        echo "SOFTWARE."
    fi
}

SHOW_LICENSE=false
SHOW_HELP_SECTION=false
SHOW_HELP_SECTION_LICENSE=false
SHOW_HELP_SECTION_INSTALL=false
SHOW_HELP_SECTION_FANCY=false

check_and_install_dependencies() {
    if [ "$(is_package_installed binutils)" == "Noninstalled" ] ; then
        REQUIRED_PACKAGES="$REQUIRED_PACKAGES binutils"
    fi
    if [ "$(is_package_installed make)" == "Noninstalled" ] ; then
        REQUIRED_PACKAGES="$REQUIRED_PACKAGES make"
    fi
    if [ "$(is_package_installed gcc)" == "Noninstalled" ] ; then
        REQUIRED_PACKAGES="$REQUIRED_PACKAGES gcc"
    fi
    if [ "$(is_package_installed git)" == "Noninstalled" ] ; then
        REQUIRED_PACKAGES="$REQUIRED_PACKAGES git"
    fi
    if [ "$(is_package_installed software-properties-common)" == "Noninstalled" ] ; then
        REQUIRED_PACKAGES="$REQUIRED_PACKAGES software-properties-common"
    fi
    if [ "$(is_package_installed xdg-utils)" == "Noninstalled" ] ; then
        REQUIRED_PACKAGES="$REQUIRED_PACKAGES xdg-utils"
    fi
    if [ "$REQUIRED_PACKAGES" != "" ] ; then
        if [ "$(whoami)" == "root" ] ; then
            echo "Are you ok with this script installing these packages :$REQUIRED_PACKAGES, ?"
            read -r -n1 -s -p "[Y]es or [N]o" confirmation
            echo ""
            if [ "$confirmation" == "Y" ] || [ "$confirmation" == "y" ] ; then
                echo "Installing dependencies"
                apt-get install $REQUIRED_PACKAGES -y
                echo "Please re-launch this script"
            fi
        else
            echo "This program requires these packages :$REQUIRED_PACKAGES, to run, please either re-run this script as root or copy and paste the command below to install"
            echo ""
            echo "sudo apt-get install$REQUIRED_PACKAGES"
        fi
    fi
}

while getopts :flih:: opt; do
    case $opt in
        f)
            FANCY_TERMINAL=false
            ;;
        l) 
            check_and_install_dependencies
            SHOW_LICENSE=true
            ;;
        h) 
            check_and_install_dependencies
            if [ "$OPTARG" == "l" ] || [ "$OPTARG" == "=l" ]; then
                SHOW_HELP_SECTION_LICENSE=true
            elif [ "$OPTARG" == "i" ] || [ "$OPTARG" == "=i" ]; then
                SHOW_HELP_SECTION_INSTALL=true
            elif [ "$OPTARG" == "f" ] || [ "$OPTARG" == "=f" ]; then
                SHOW_HELP_SECTION_FANCY=true
            else
                SHOW_HELP_SECTION=true
            fi
            ;;
        i)
            check_and_install_dependencies
            compile_and_install
            exit
            ;;
        *)
            check_and_install_dependencies
            SHOW_HELP_SECTION=true
            ;;
    esac
done

if [ "$SHOW_HELP_SECTION" == true ] ; then
    help_section
elif [ "$SHOW_HELP_SECTION_INSTALL" == true ] ; then
    help_section_install
elif [ "$SHOW_HELP_SECTION_LICENSE" == true ] ; then
    help_section_license
elif [ "$SHOW_HELP_SECTION_FANCY" == true ] ; then
    help_section_fancy
elif [ "$SHOW_LICENSE" == true ] ; then
    license
else
    help_section
fi


if [ "$FANCY_TERMINAL" == true ] ; then
    move_cursor 0 "$TERMINAL_HEIGHT"
fi
exit