#!/bin/bash

set -e

cd "`dirname $0`"

date="`date +'%Y%m%d'`"
dir="`pwd`"
if [ "$dir" = "$HOME" ]; then
	relpath=""
else
	relpath="${dir##$HOME/}/"
fi

for file in bash_profile bashrc gitconfig gitignore screenrc vimrc zshrc zshfunc terminfo tmux.conf; do
	if [ -L "$HOME/.$file" ]; then
		if [ "$(readlink "$HOME/.$file")" != "$dir/$file" ]; then # old style symlink, remove
			rm -v -f "$HOME/.$file"
		fi
	fi
	if ! [ -L "$HOME/.$file" ]; then
		if [ -e "$HOME/.$file" ]; then
			if [ "$file" = "bashrc" ] &&
			   md5sum $HOME/.$file | grep -q eed8ae914410b3f768d345824117fd0b ; then # default lenny
				rm -v -f "$HOME/.$file"
			else
				mv "$HOME/.$file" "$HOME/.$file-$date"
			fi
		elif [ -L "$HOME/.$file" ]; then # dangling symlink
			rm -f "$HOME/.$file"
		fi
		ln -v -s "$relpath$file" "$HOME/.$file"
	fi
done