#!/bin/bash

USER="$(whoami)"
VIEWER="tmuxviewer"
SOCKET="/tmp/$VIEWER/$USER"

if groups $USER | grep -q "sudo"; then
	mkdir -p /tmp/$VIEWER/
	sudo chown $VIEWER:$VIEWER "/tmp/$VIEWER"
	sudo chmod 777 /tmp/$VIEWER/ 2> /dev/null
	sudo chown $USER:$VIEWER $SOCKET
	sudo chmod 770 $SOCKET
else
	echo "sorry, you're not allowed to broadcast.."
	exit 1
fi


tmux -S $SOCKET has-session -t shared 2> /dev/null

if [ $? != 0 ]; then
	if groups $USER | grep -q "sudo"; then
		echo "no shared session running, creating one..."
		tmux -S $SOCKET new-session -A -s shared -d
		sudo chown $USER:$VIEWER $SOCKET
		chmod 770 $SOCKET
	else
		echo "you are not allowed to take over..."
		exit 1
	fi
fi

echo "attaching to $SOCKET"
tmux -S $SOCKET attach -t shared