install-nodenv.sh

#!/usr/bin/env bash

# Installation
#
#   $ bash <(curl -s https://gist.githubusercontent.com/puckbag/2e8b3c68bd21ed895ee793d8bc97f04d/raw/install-nodenv.sh)
#

# Reference
#
#   https://github.com/nodenv/nodenv
#   https://github.com/nodenv/node-build
#   https://github.com/nodenv/nodenv-update
#

echo_error () {
	echo; echo "$(tput setaf 1)$@$(tput sgr0)"; echo
}

echo_info () {
	echo; echo "$(tput setaf 2)$@$(tput sgr0)"; echo
}

echo_alert () {
	echo; echo "$(tput setaf 3)$@$(tput sgr0)"; echo
}

if [ -d ~/.nodenv ]; then
	echo_error 'Nodenv already installed'
	exit 1
fi

PROFILE_FILE=''
if [ -f "$HOME/.bash_profile" ]; then
	PROFILE_FILE="$HOME/.bash_profile"
elif [ -f "$HOME/.bash_login" ]; then
	PROFILE_FILE="$HOME/.bash_login"
elif [ -f "$HOME/.profile" ]; then
	PROFILE_FILE="$HOME/.profile"
fi

CWD=`pwd`

# Install nodenv/nodenv
echo_info 'Install nodenv/nodenv'
git clone https://github.com/nodenv/nodenv.git ~/.nodenv
cd ~/.nodenv && src/configure && make -C src

cd $CWD

# Inject nodenv into this environment
echo_info 'Inject nodenv into this environment'
export PATH="$HOME/.nodenv/bin:$PATH"
eval "$(nodenv init -)"

# Save nodenv into environment scripts
if [[ -z "$PROFILE_FILE" ]]; then
	echo_alert 'BASH profile file could not be established.'
else
	echo_info "Save nodenv into profile file: $PROFILE_FILE"
	if ! grep -q '.nodenv/bin' "$PROFILE_FILE"; then
		echo 'export PATH="$HOME/.nodenv/bin:$PATH"' >> "$PROFILE_FILE"
	fi
	if ! grep -q 'nodenv init' "$PROFILE_FILE"; then
		echo 'eval "$(nodenv init -)"' >> "$PROFILE_FILE"
	fi
fi

# Install nodenv plugin: node-build
echo_info 'Install nodenv plugin: node-build'
git clone https://github.com/nodenv/node-build.git $(nodenv root)/plugins/node-build

# Install nodenv plugin: node-update
echo_info 'Install nodenv plugin: node-update'
git clone https://github.com/nodenv/nodenv-update.git "$(nodenv root)"/plugins/nodenv-update

# Update nodenv and plugins
echo_info 'Update nodenv and plugins'
nodenv update

# Note about shell environment
echo_alert 'You must restart your shell or run the following:'
echo '  $ export PATH="$HOME/.nodenv/bin:$PATH" && eval "$(nodenv init -)"'
echo