#!/bin/bash -e

CMD="$0"

[ "$NAME" ]      || NAME=
[ "$EMAIL" ]     || EMAIL=
[ "$IRCSERVER" ] || IRCSERVER=irc.freenode.net
[ "$IRCPORT" ]   || IRCPORT=6667
[ "$IRCNICK" ]   || IRCNICK=coward
[ "$IRCPASS" ]   || IRCPASS=

die() { echo "$1" 1>&2 && show_help && [ "$2" ] && [ "$2" -ge 0 ] && exit "$2" || exit 1; }

# Show help function to be used below
show_help() {
	awk 'NR>1{print} /^(###|$)/{exit}' "$CMD"
	echo "USAGE: $(basename "$CMD") [arguments]"
	echo "ARGS:"
	MSG=$(awk '/^NARGS=-1; while/,/^esac; done/' "$CMD" | sed -e 's/^[[:space:]]*/  /' -e 's/|/, /' -e 's/)//' | grep '^  -')
	EMSG=$(eval "echo \"$MSG\"")
	echo "$EMSG"
}

# Parse command line options (odd formatting to simplify show_help() above)
NARGS=-1; while [ "$#" -ne "$NARGS" ]; do NARGS=$#; case $1 in
	# SWITCHES
	-h|--help)       # This help message
		show_help; exit 1; ;;
	-n|--name)       # Name for git
		shift && NAME="$1" && shift; ;;
	-e|--email)      # Email for git
		shift && EMAIL="$1" && shift; ;;
	-s|--server)     # server for irssi
		shift && IRCSERVER="$1" && shift; ;;
	-P|--port)       # port for irssi
		shift && IRCPORT="$1" && shift; ;;
	-N|--nick)       # nick for irssi
		shift && IRCNICK="$1" && shift; ;;
	-p|--password)   # password for irssi
		shift && IRCPASS="$1" && shift; ;;
esac; done

[ "$NAME" ] || die "You must provide a name!"
[ "$EMAIL" ] || die "You must provide an email!"

fn_distro(){
	if [ -f /etc/lsb-release ]; then
		os=$(lsb_release -s -d)
	elif [ -f /etc/debian_version ]; then
		os="Debian $(cat /etc/debian_version)"
	elif [ -f /etc/redhat-release ]; then
		os=$(cat /etc/redhat-release)
	else
		os="$(uname -s) $(uname -r)"
	fi
}

UNAMESTR=$(uname)
if [[ "$UNAMESTR" == 'Linux' ]]; then
	fn_distro
	if [[ "$os" == Ubuntu* ]]; then
		sudo apt-get install -y build-essential git irssi vim-nox zsh tmux
	fi
elif [[ "$UNAMESTR" == 'Darwin' ]]; then
	# Probably need to set up brew and brew install some stuff here...
	true
fi

git clone git@git.chrissexton.org:cws/dotfiles.git "$HOME"/.dotfiles
DOTFILES="$HOME"/.dotfiles

cat "$DOTFILES"/files/gitignore_global > "$HOME"/.gitignore_global

<"$DOTFILES"/files/gitconfig sed -e "s/%NAME%/$NAME/" | sed -e "s/%EMAIL%/$EMAIL/" > "$HOME"/.gitconfig

cat "$DOTFILES"/files/tmux.conf > "$HOME"/.tmux.conf

cat "$DOTFILES"/files/vimrc > "$HOME"/.vimrc

if [[ ! -d "$HOME"/.oh-my-zsh ]]; then
	curl -L https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh | sh
fi

if [[ ! "$SHELL" =~ .*zsh ]]; then
	chsh -s "$(which zsh)"
fi

cat "$DOTFILES"/files/zshrc > "$HOME"/.zshrc

mkdir -p "$HOME"/bin
cat "$DOTFILES"/files/tmux.sh > "$HOME"/bin/tmux.sh

mkdir -p "$HOME"/.irssi
<"$DOTFILES"/files/irssiconfig sed -e "s/%PASSWORD%/$IRCPASS/" | sed -e "s/%NICK%/$IRCNICK/" | sed -e "s/%SERVER%/$IRCSERVER/" | sed -e "s/%PORT%/$IRCPORT/" > "$HOME"/.irssi/config