#!/bin/bash

echo "#########################"
echo "#                       #"
echo "#  installing dotfiles  #"
echo "#                       #"
echo "#########################"

BACKUP_DIR="backup-$(date '+%Y-%m-%d_%H-%M-%S')"
MY_PATH="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
CONFIG_MY_PATH="${MY_PATH/$HOME/\$\{HOME\}}"

mkdir "$BACKUP_DIR"

function cecho() {
	if [ -z "$2" ] ; then
		echo "$1"
	else
		case $1 in
			red)    echo -e "\e[0;31m$2\e[0m" ;;
			green)  echo -e "\e[0;32m$2\e[0m" ;;
			yellow) echo -e "\e[0;33m$2\e[0m" ;;
			cyan)   echo -e "\e[1;36m$2\e[0m" ;;
			purple) echo -e "\e[0;35m$2\e[0m" ;;
			white)  echo -e "\e[1;37m$2\e[0m" ;;
			ask)    echo -ne "\e[1;37m$2\e[0m" ;;
			*)      echo -e "\e[0;37m$2\e[0m" ;;
		esac
	fi
}
function backup_file() {
	file="${1/\~/$HOME}"
	if [ -e "$file" ] ; then
		if [ -d "$file" ] ; then
			cecho purple "  - Moving old '$file' directory ..."
		else
			cecho purple "  - Moving old '$file' file ..."
		fi
		mv "$file" "${BACKUP_DIR}/$(basename "${file}")"
	else
		cecho yellow "  ! File '$file' not found! "
	fi
}
function symlink() {
	# usage: symlink <name> <destination>
	name="${1/\~/$HOME}"
	cecho green "  + Creating symlink to '$2' ..."
	ln -s $2 $name
}
function ask() {
	cecho ask "  ? Install file '$1'? [N/y] "
	read c
	if [ "$c" == "y" -o "$c" == "Y" ] ; then
		backup_file "$1"
		symlink "$1" "$2"
	fi
}

#######
# vim #
#######

cecho cyan "Installing vim config ..."
backup_file "~/.vim"
backup_file "~/.vimrc"
symlink "~/.vim" "${MY_PATH}/vim"
symlink "~/.vimrc" "${MY_PATH}/vim/vimrc"
if command -v vim >/dev/null 2>&1; then
	cecho green "  + Installing plugins ... "
	vim -nE +"colorscheme default" +PluginInstall +qall
else
	cecho yellow "  ! Vim is not installed!"
	cecho yellow "  ! to install the plugins execute:"
	cecho yellow "  ! vim -nE +\"colorscheme default\" +PluginInstall +qall"
fi

#######
# zsh #
#######

cecho cyan "Installing zsh config"
backup_file "~/.zsh"
backup_file "~/.zshrc"

# check if grml is installed
grep grml\.org /etc/zsh/zshrc > /dev/null
if [ $? -ne 0 ] ; then
	echo "  + Installing grml ..."
	wget -O ~/.zshrc http://git.grml.org/f/grml-etc-core/etc/zsh/zshrc
	cecho yellow "  ! You might wanna install grml-zsh-config using your packet manager"
	cecho yellow "  ! and remove the .zshrc file in your home directory. "
else
	cecho green "  . grml-zsh-config is already installed :-)"
	# prevent configuration dialog
	if [ ! -f "~/.zshrc" ] ; then
		cecho green "  + Creating empty .zshrc"
		echo "# empty" > ~/.zshrc
	fi
fi


symlink "~/.zsh" "${MY_PATH}/zsh"
symlink "~/.zshrc.local" "${MY_PATH}/zsh/zshrc.local"
while [ ! "$MTYPE" == "PC" -a ! "$MTYPE" == "SERVER" ] ; do
	cecho ask "  ? Is this a server of a PC? [s|p] > "
	read mt
	case $mt in
		[Ss]*)
			MTYPE="SERVER";;
		[Pp]*)
			MTYPE="PC";;
		*)
			cecho red "  ! Invalid input";;
	esac
done
cecho green "  + Creating .zshrc.pre ... "
(
	echo "# Path to your oh-my-zsh configuration."
	echo "ZSH=${CONFIG_MY_PATH}/.zsh"
	echo "# current user"
	echo "export DEFAULT_USER=\"\$(whoami)\""
	echo "# machine type"
	echo "export MTYPE=\"$MTYPE\""
) > ~/.zshrc.pre

########
# tmux #
########

cecho cyan "Installing tmux config"
backup_file "~/.tmux.conf"
symlink "~/.tmux.conf" "${MY_PATH}/tmux/tmux.conf"

######
# i3 #
######

cecho cyan "Installing i3 config"
if [ "$MTYPE" == "PC" ] ; then
	backup_file "~/.i3"
	backup_file "~/.i3status.conf"
	symlink "~/.i3" "${MY_PATH}/i3"
	symlink "~/.i3status.conf" "${MY_PATH}/i3/i3status.conf"
	ask "~/.xprofile" "${MY_PATH}/xprofile"
else
	cecho yellow "  > skipping "
fi

###############
# other stuff #
###############
cecho cyan "Symlinking other stuff ..."

if [ "$MTYPE" == "PC" ] ; then
	ask "~/.xinitrc" "${MY_PATH}/xinitrc"
	ask "~/.pentadactylrc" "${MY_PATH}/pentadactylrc"
	ask "~/.gitconfig" "${MY_PATH}/gitconfig"
else
	backup_file "~/.gitconfig"
	symlink "~/.gitconfig" "${MY_PATH}/gitconfig"
fi

backup_file "~/bin"
symlink "~/bin" "${MY_PATH}/bin"