#!/bin/bash

# Adrien Luxey - Feb. 2019
# Script inspired by https://github.com/mathiasbynens/dotfiles/blob/master/bootstrap.sh

# Get dotfiles dir
DOTDIR=$(cd "$(dirname ${BASH_SOURCE})"; pwd)
INSTALLED_FLAG_FILE="$DOTDIR/.installed"
INSTALL_SUBLIME=0


function printHelp {
	cat <<-EOF
	USAGE: $0 [OPTIONS]

	OPTIONS:
		-s|--sublime 	Install Sublime Text 3
		-h|--help 		Show this help

	The script will install dependencies once (remove ${INSTALLED_FLAG_FILE} to redo) and symlink dotfiles to their destination in your \$HOME.
	EOF
	exit $1;
}

function syncDotfiles {
	echo Removing previous dotfiles...
	rm $HOME/.zshrc > /dev/null 2>&1
	rm $HOME/.vimrc > /dev/null 2>&1
	rm $HOME/.tmux.conf > /dev/null 2>&1
	rm -rf $HOME/.vim > /dev/null 2>&1
	rm -rf $HOME/.tmux > /dev/null 2>&1
	rm -rf $HOME/.config/sublime-text-3/Packages/User > /dev/null 2>&1

	echo Installing our dotfiles...
	ln -s $DOTDIR/zshrc $HOME/.zshrc
	ln -s $DOTDIR/vimrc $HOME/.vimrc
	ln -s $DOTDIR/tmux.conf $HOME/.tmux.conf
	ln -s $DOTDIR/vim $HOME/.vim
	ln -s $DOTDIR/tmux $HOME/.tmux
	if [ -d "$HOME/.config/sublime-text-3" ]; then
		ln -s $DOTDIR/sublime $HOME/.config/sublime-text-3/Packages/User 	
	fi
}

function installDependencies {
	echo Installing dependencies...

	# Dependencies
	sudo apt update  > /dev/null 2>&1
	sudo apt install -y apt-transport-https curl zsh fonts-powerline autojump  > /dev/null 2>&1

	# Install Sublime Text
	if [[ ${INSTALL_SUBLIME} -eq 1 ]]; then
		echo Installing Sublime Text 3...
		wget -qO - https://download.sublimetext.com/sublimehq-pub.gpg | sudo apt-key add - > /dev/null 2>&1
		echo "deb https://download.sublimetext.com/ apt/stable/" | sudo tee /etc/apt/sources.list.d/sublime-text.list > /dev/null 2>&1
		sudo apt update > /dev/null 2>&1
		sudo apt install sublime-text -y > /dev/null 2>&1
	fi

	# Install Oh My Zsh
	if [ ! -d "$HOME/.oh-my-zsh" ]; then
		echo Installing Oh-My-Zsh...
		sh -c "$(wget -q https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh -O -)" 
		# Install powerlevel9k theme in Oh-My-Zsh
		if [ ! -d "$HOME/.oh-my-zsh/custom/themes/powerlevel9k" ]; then
			echo Installing Powerlevel9k theme...
			git clone https://github.com/bhilburn/powerlevel9k.git $HOME/.oh-my-zsh/custom/themes/powerlevel9k > /dev/null 2>&1
		fi
	fi
	
	# Set ZSH as default shell
	if [ ! "$SHELL" = "$(which zsh)" ]; then
		echo Setting ZSH as default shell...
		chsh -s $(which zsh) 
	fi
}

# Parse command-line arguments
while (( "$#" )); do 
	case "$1" in 
		-h|--help)
			printHelp 0
			;;
		-s|--sublime)
			INSTALL_SUBLIME=1
			shift
			;;
		--)
			shift
			break 
			;;
		-*|--*=)
			echo "Error: Unsupported flag $1" >&2
			printHelp 1
			;;
	esac
done

if [ ! -f $INSTALLED_FLAG_FILE ]; then
	installDependencies && touch $INSTALLED_FLAG_FILE
fi
syncDotfiles
echo "All done!"
exit 0