deploy

prompt_install() {
	echo -n "Heads up! $1 is not installed. Would you like to install it? (y/n) " >&2
	old_stty_cfg=$(stty -g)
	stty raw -echo
	answer=$( while ! head -c 1 | grep -i '[ny]' ;do true ;done )
	stty $old_stty_cfg && echo
	if echo "$answer" | grep -iq "^y" ;then
		case "$(uname -s)" in
			Darwin)
				brew install $1
				;;
			Linux)
				sudo apt install $1
				;;
			FreeBSD)
				sudo pkg install $1
				;;
			*)
				echo "Operating system not recognized, please install $1 manually"
				;;
			esac
	fi
}

check_for_software() {
	echo "Checking to see if $1 is installed"
	if ! [ -x "$(command -v $1)" ]; then
		prompt_install $1
	else
		echo "$1 is installed."
	fi
}

check_default_shell() {
	if [ -z "${SHELL##*zsh*}" ] ;then
			echo "Default shell is zsh."
	else
		echo "Default shell is not zsh. Attempting chsh"
		chsh -s $(which zsh)
		echo "Full logout may be necessary"
	fi
}

check_for_software zsh
check_for_software vim
check_for_software tmux

check_default_shell

echo -n "Would you like to backup your current dotfiles? (y/n) "
old_stty_cfg=$(stty -g)
stty raw -echo
answer=$( while ! head -c 1 | grep -i '[ny]' ;do true ;done )
stty $old_stty_cfg
if echo "$answer" | grep -iq "^y" ;then
	mv ~/.zshrc ~/.zshrc.old
	mv ~/.tmux.conf ~/.tmux.conf.old
	mv ~/.vimrc ~/.vimrc.old
else
	echo -e "\nNot backing up old dotfiles."
fi

printf "source '$HOME/dotfiles/zsh/zshrc_manager.sh'" > ~/.zshrc
printf "so $HOME/dotfiles/vim/vimrc.vim" > ~/.vimrc
printf "source-file $HOME/dotfiles/tmux/tmux.conf" > ~/.tmux.conf
exec zsh