#!/bin/bash

#
# Script to install the NodeSource N|Solid 3.x repo onto a
# Debian or Ubuntu system.
#
# Run as root or insert `sudo -E` before `bash`:
#
# curl -sL http://nsolid-deb.nodesource.com/nsolid_setup_3.x | bash -
#   or
# wget -qO- http://nsolid-deb.nodesource.com/nsolid_setup_3.x | bash -
#

export DEBIAN_FRONTEND=noninteractive
SCRSUFFIX="3.x"
NODENAME="N|Solid 3.x"
NODEREPO="nsolid_3.x"
NODEPKG="nsolid"

print_status() {
    echo
    echo "## $1"
    echo
}

if test -t 1; then # if terminal
    ncolors=$(which tput > /dev/null && tput colors) # supports color
    if test -n "$ncolors" && test $ncolors -ge 8; then
        termcols=$(tput cols)
        bold="$(tput bold)"
        underline="$(tput smul)"
        standout="$(tput smso)"
        normal="$(tput sgr0)"
        black="$(tput setaf 0)"
        red="$(tput setaf 1)"
        green="$(tput setaf 2)"
        yellow="$(tput setaf 3)"
        blue="$(tput setaf 4)"
        magenta="$(tput setaf 5)"
        cyan="$(tput setaf 6)"
        white="$(tput setaf 7)"
    fi
fi

bail() {
    echo 'Error executing command, exiting'
    exit 1
}

exec_cmd_nobail() {
    echo "+ $1"
    bash -c "$1"
}

exec_cmd() {
    exec_cmd_nobail "$1" || bail
}

setup() {

print_status "Installing the NodeSource ${NODENAME} repo..."


PRE_INSTALL_PKGS=""

# Check that HTTPS transport is available to APT
# (Check snaked from: https://get.docker.io/ubuntu/)

if [ ! -e /usr/lib/apt/methods/https ]; then
    PRE_INSTALL_PKGS="${PRE_INSTALL_PKGS} apt-transport-https"
fi

if [ ! -x /usr/bin/lsb_release ]; then
    PRE_INSTALL_PKGS="${PRE_INSTALL_PKGS} lsb-release"
fi

if [ ! -x /usr/bin/curl ] && [ ! -x /usr/bin/wget ]; then
    PRE_INSTALL_PKGS="${PRE_INSTALL_PKGS} curl"
fi

# Used by apt-key to add new keys
if [ ! -x /usr/bin/gpg ]; then
    PRE_INSTALL_PKGS="${PRE_INSTALL_PKGS} gnupg"
fi

# Populating Cache
print_status "Populating apt-get cache..."
exec_cmd 'apt-get update'

if [ "X${PRE_INSTALL_PKGS}" != "X" ]; then
    print_status "Installing packages required for setup:${PRE_INSTALL_PKGS}..."
    # This next command needs to be redirected to /dev/null or the script will bork
    # in some environments
    exec_cmd "apt-get install -y${PRE_INSTALL_PKGS} > /dev/null 2>&1"
fi

DISTRO=$(lsb_release -c -s)

check_alt() {
    if [ "X${DISTRO}" == "X${2}" ]; then
        echo
        echo "## You seem to be using ${1} version ${DISTRO}."
        echo "## This maps to ${3} \"${4}\"... Adjusting for you..."
        DISTRO="${4}"
    fi
}

check_alt "Kali"          "sana"     "Debian" "jessie"
check_alt "Debian"        "stretch"  "Debian" "jessie"
check_alt "Linux Mint"    "maya"     "Ubuntu" "precise"
check_alt "Linux Mint"    "qiana"    "Ubuntu" "trusty"
check_alt "Linux Mint"    "rafaela"  "Ubuntu" "trusty"
check_alt "Linux Mint"    "rebecca"  "Ubuntu" "trusty"
check_alt "Linux Mint"    "rosa"     "Ubuntu" "trusty"
check_alt "Linux Mint"    "sarah"    "Ubuntu" "xenial" 
check_alt "LMDE"          "betsy"    "Debian" "jessie"
check_alt "elementaryOS"  "luna"     "Ubuntu" "precise"
check_alt "elementaryOS"  "freya"    "Ubuntu" "trusty"
check_alt "Trisquel"      "toutatis" "Ubuntu" "precise"
check_alt "Trisquel"      "belenos"  "Ubuntu" "trusty"
check_alt "BOSS"          "anokha"   "Debian" "wheezy"
check_alt "bunsenlabs"    "bunsen-hydrogen" "Debian" "jessie"
check_alt "Tanglu"        "chromodoris"  "Debian" "jessie"

if [ "X${DISTRO}" == "Xdebian" ]; then
  print_status "Unknown Debian-based distribution, checking /etc/debian_version..."
  NEWDISTRO=$([ -e /etc/debian_version ] && cut -d/ -f1 < /etc/debian_version)
  if [ "X${NEWDISTRO}" == "X" ]; then
    print_status "Could not determine distribution from /etc/debian_version..."
  else
    DISTRO=$NEWDISTRO
    print_status "Found \"${DISTRO}\" in /etc/debian_version..."
  fi
fi

print_status "Confirming \"${DISTRO}\" is supported..."

if [ -x /usr/bin/curl ]; then
    exec_cmd_nobail "curl -sLf -o /dev/null 'http://nsolid-deb.nodesource.com/${NODEREPO}/dists/${DISTRO}/Release'"
    RC=$?
else
    exec_cmd_nobail "wget -qO /dev/null -o /dev/null 'http://nsolid-deb.nodesource.com/${NODEREPO}/dists/${DISTRO}/Release'"
    RC=$?
fi

if [[ $RC != 0 ]]; then
    print_status "Your distribution, identified as \"${DISTRO}\", is not currently supported, please contact NodeSource if you think this is incorrect or would like your distribution to be considered for support"
    exit 1
fi

if [ -f "/etc/apt/sources.list.d/chris-lea-node_js-$DISTRO.list" ]; then
    print_status 'Removing Launchpad PPA Repository for NodeJS...'

    exec_cmd_nobail 'add-apt-repository -y -r ppa:chris-lea/node.js'
    exec_cmd "rm -f /etc/apt/sources.list.d/chris-lea-node_js-${DISTRO}.list"
fi

print_status 'Adding the NodeSource signing key to your keyring...'

if [ -x /usr/bin/curl ]; then
    exec_cmd 'curl -s http://nsolid-deb.nodesource.com/gpgkey/NODESOURCE-NSOLID-GPG-SIGNING-KEY | apt-key add -'
else
    exec_cmd 'wget -qO- http://nsolid-deb.nodesource.com/gpgkey/NODESOURCE-NSOLID-GPG-SIGNING-KEY | apt-key add -'
fi

print_status "Creating apt sources list file for the NodeSource ${NODENAME} repo..."

exec_cmd "echo 'deb http://nsolid-deb.nodesource.com/${NODEREPO} ${DISTRO} main' > /etc/apt/sources.list.d/nodesource-nsolid.list"

print_status 'Running `apt-get update` for you...'

exec_cmd 'apt-get update'

}

## Defer setup until we have the complete script
setup