#!/bin/sh
set -e
cd "$(dirname "$0")"

I_PREFIX=/
U_BASE=true
U_BASH=false
U_ZSH=false

while [ $# -gt 0 ]; do
	case "$1" in
		--help|-h)
			echo "Usage: $0 [OPTION].."
			echo
			echo "Options:"
			echo "  -h, --help"
			echo "    Print this help text."
			echo "  -b, --bash"
			echo "    Install bash configuration"
			echo "  -z, --zsh"
			echo "    Install zsh configuration"
			echo "  --no-base"
			echo "    Do not install base only bash or zsh is installed"
			echo "  --prefix PATH"
			echo "    Install prefix (in default set to /)"
			exit 0
			;;
		--bash|-b)
			U_BASH=true
			;;
		--zsh|-z)
			U_ZSH=true
			;;
		--no-base)
			U_BASE=false
			;;
		--prefix)
			shift
			I_PREFIX="$1"
			;;
		*)
			echo "Unknown option: $1" >&2
			exit 1
			;;
	esac
	shift
done

# Install shellrc
if $U_BASE; then
	mkdir -p "$I_PREFIX/usr/share/shellrc"
	cp -r shellrc.d/. "$I_PREFIX/usr/share/shellrc/"
fi

if $U_BASH; then
	mkdir -p "$I_PREFIX/etc/bash"
	cp -r bashrc.d/. "$I_PREFIX/etc/bash/bashrc.d"
	cat >"$I_PREFIX/etc/bash/bashrc.d/shellrc" <<-"EOF"
		for sh in /usr/share/shellrc/*; do
			[ -r "$sh" ] && . "$sh"
		done
	EOF
	mkdir -p "$I_PREFIX/usr/share/bash-completion/completions"
	cp -r bash-completion/. "$I_PREFIX/usr/share/bash-completion/completions/"
fi

if $U_ZSH; then
	mkdir -p "$I_PREFIX/etc/zsh"
	cat >"$I_PREFIX/etc/zsh/zshrc" <<-"EOF"
		[[ -o interactive ]] || return # skip on initialization if not interactive
		for sh in /etc/zsh/zshrc.d/*; do
			[ -r "$sh" ] && . "$sh"
		done
	EOF
	cp -r zshrc.d/. "$I_PREFIX/etc/zsh/zshrc.d"
	cat >"$I_PREFIX/etc/zsh/zshrc.d/shellrc" <<-"EOF"
		for sh in /usr/share/shellrc/*; do
			[ -r "$sh" ] && . "$sh"
		done
	EOF
	mkdir -p "$I_PREFIX/usr/share/zsh/site-functions"
	cp -r zsh-completion/. "$I_PREFIX/usr/share/zsh/site-functions"
fi