setup.sh

#!/bin/bash
trap exit INT 

banner()
{
	echo '#######################################################'
	echo '#    ________                        .___             #'
	echo '#   /  _____/_  _  __ ____  ____   __| _/_______  __  #'
	echo '#  /   \  __\ \/ \/ // __ \/  _ \ / __ |/ __ \  \/ /  #'
	echo '#  \    \_\  \     /\  ___(  <_> ) /_/ \  ___/\   /   #'
	echo '#   \______  /\/\_/  \___  >____/\____ |\___  >\_/    #'
	echo '#          \/            \/           \/    \/        #'
	echo '#                                                     #'
	echo '#######################################################'
}

help_menu()
{
	echo '#### MAIN OPTIONS:                                    #'
	echo '  -[-]i[nstall]=<path>    The installation path       #'
	echo '#######################################################'
}

show_config()
{
	echo "#### CONFIGURATION:                                    "
	echo "  - SRC     = $GD_SRC                                  "
	echo "  - INSTALL = $GD_INSTALL                              "
	echo "  - TMP     = $GD_TMP                                  "
	echo "  - CACHE   = $GD_CACHE                                "
	echo "#######################################################"

}

convert_absolute_path()
{
	test -z "`echo "$1" | grep -E "^/.*$"`" && printf "$2/"
	printf "$1"
}

error()
{
	printf "Error: $@\n" 1>&2
	exit 42
}

warn()
{
	printf "Warn: $@\n" 1>&2
}

read_arg()
{
	echo "$1" | sed -re "s@^$2@@"
}

create_symlinks()
{
	for link in `cat $GD_SRC/.links`
	do
		src=`echo $link    | cut -f1 -d":"`
		target=`echo $link | cut -f2 -d":" | sed -e "s,HOME,${HOME},g"`

		test -e "${target}" -a ! -L "$target" && warn "Don't want to erase the regular file $target !" && continue
		test -f "$src"        && ln -sf $GD_SRC/$src $target || warn "Trouble to create $target link !"
	done

}

build_packages()
{
	if test -d $GD_SRC/spack/ -a ! -e $GD_SRC/spack/share/spack/setup-env.sh; then
		warn "Spack not present. Cloning it first"
		(git submodule update --remote) || error "Can't download Spack !"
	fi
	. $GD_SRC/spack/share/spack/setup-env.sh || error "Can't source Spack environment !"
	
	type module > /dev/null 2>&1
	if test "$?" != "0"; then
		warn "Environment-modules not present. Installing first"
		spack bootstrap || error "Unable to deploy Spack Bootstrap"
	fi

	test -f "$GD_SRC/spack_recipes" && git submodule update --remote
	spack repo add $GD_SRC/spack_recipes

	grep -v '^ *#' < $GD_SRC/.defprogs |
	while read package
	do
		test -z "$package" && continue
		spack install $package || error "Unable to install $package"
	done
}

deploy_vim()
{
	echo "Deploying VIM environment"
	mkdir -p ~/.vim/bundle
	if test -d ~/.vim/bundle/vundle.vim; then
		cd ~/.vim/bundle/vundle.vim && git pull
	else
		git clone https://github.com/gmarik/Vundle.vim.git ~/.vim/bundle/vundle.vim || error "Can't clone vundle.vim from Github !"
	fi
}

list_installs()
{
	test -f ~/.gd_install || echo "No previous installation"
	while read conf
	do
		install="`echo "$conf" | cut -f1 -d":"`"
		cache="`echo "$conf" | cut -f2 -d":"`"

		echo "* Install: $install (cache: $cache)"
	done < ~/.gd_install
}

check_install()
{
	test -f ~/.gd_install || return

	while read conf
	do
		install="`echo "$conf" | cut -f1 -d":"`"
		cache="`echo "$conf" | cut -f2 -d":"`"

		if test "$install" != "$GD_INSTALL"; then
			error "You re-install while you already have an install in $install"
		elif test "$cache" != "$GD_CACHE"; then
			error "I do not handle Cache path moving yet !"
		fi
	done < ~/.gd_install
}

register_new_install()
{
	echo "$GD_INSTALL:$GD_CACHE" >> ~/.gd_install
}

GD_PWD="$PWD"
GD_SRC="`dirname $0`"
GD_INSTALL=
GD_TMP=
GD_CACHE=
GD_GCC=6.2.0

banner
for arg in $@
do
	case $arg in
		--list)
			list_installs
			exit 0
			;;
		--install=*|-i=*)
			GD_INSTALL="`read_arg "$arg" "--*i(nstall)*="`"
			;;
		--tmp=*|-t=*)
			GD_TMP="`read_arg "$arg" "--*t(mp)*="`"
			;;
		--cache=*|-c=*)
			GD_CACHE="`read_arg "$arg" "--*c(ache)*="`"
			;;
		--help|-help|-h|-H)
			help_menu
			exit 0
			;;
		--cc_ver=*)
			GD_GCC="`read_arg "$arg" "--cc_ver="`"
			;;
		*)
			help_menu
			error "Unknown argument '$arg'"
			;;
	esac
done


GD_SRC="`convert_absolute_path "$GD_SRC" "$GD_PWD"`"

test -z "$GD_INSTALL" && GD_INSTALL=$GD_SRC/spack/opt/spack
test -z "$GD_TMP" && GD_TMP=$GD_SRC/spack/var/spack/stage
test -z "$GD_CACHE" && GD_CACHE=$GD_SRC/spack/var/spack/cache

GD_INSTALL="`convert_absolute_path "$GD_INSTALL" "$GD_PWD"`"
GD_TMP="`convert_absolute_path "$GD_TMP" "$GD_PWD"`"
GD_CACHE="`convert_absolute_path "$GD_CACHE" "$GD_PWD"`"


show_config

check_install

create_symlinks
mkdir -p $HOME/.spack
cat<<EOF > $HOME/.spack/config.yaml
config:
    install_tree: $GD_INSTALL
    build_stage: $GD_TMP/spack
    source_cache: $GD_CACHE
EOF

build_packages
deploy_vim

register_new_install

rm -rf $GD_TMP/spack

echo "#######################################################"
echo "# Installation complete ! Just few more steps:"
echo "# 1. $GD_SRC/resources/update_bashrc.sh"
echo "  2. . ~/.bashrc"
echo "  3. spack load vim"
echo "# 4. $GD_SRC/resources/install_vimplugins.sh"
echo "###### THANKS FOR USING IT ! ##########################"
exit 0