install.sh

#!/bin/bash

GRAB_URL="https://raw.githubusercontent.com/shellib/grab/master/grab.sh"

download() {
    if $(type curl &> /dev/null); then
        curl -s -o $2 $1
    elif $(type wget &> /dev/null); then
        wget -O $2 $1
    else
        echo "Failed to install grab. Neither curl nor wget found!"
        exit 1
    fi

}

check_exists() {
    if $(type grab &> /dev/null); then
        exit 0
    fi
}

install() {
    echo "Installing grab..."
    check_exists

    #1. Try at $HOME/bin if exists
    if [ -d $HOME/bin ]; then
        download $GRAB_URL $HOME/bin/grab
        chmod +x $HOME/bin/grab
    fi

    check_exists

    #2. Try at /usr/local/bin
    if [ -d /usr/local/bin ]; then
        download $GRAB_URL /usr/local/bin/grab
        chmod +x /usr/local/bin/grab
    fi
}

#Only run install if script is not sourced (for unit test shake)
if [ "${BASH_SOURCE[0]}" == "${0}" ] || [ "${BASH_SOURCE[0]}" == "" ]; then
    install
fi