#!/bin/sh -e
test -f "$1" || cd "$XDG_DATA_HOME/openvpn"
case "$1" in
    ("") tmux new-session -s "vpn" "tmux ls; $SHELL";;
    (forti)
        if ip route | grep -q ppp0
        then printf "Device ppp0 already in use - press Enter to kill"
             read -r _
             sudo killall openfortivpn
        fi
        sudo tmux new-session -s "$1" '
            set -x
            route="$(ip route | grep default | sort | head -1)"
            # Start openfortivpn in the background
            openfortivpn &
            VPN_PID=$!
            # Wait a little for the VPN to establish the connection
            sleep 5
            # TODO Loop
            # Delete the default route set by openfortivpn (ppp0)
            ip route del default dev ppp0
            # Add the default route via the local network
            eval "ip route add $route"
            ip route add 134.245.0.0/16 dev ppp0;
            ip route
            wait $VPN_PID
            echo "VPN has disconnected."
            ip dev del ppp0;
        '
        ;;
    (*) test -f "$1" || file=$(find $1* -name '*.ovpn')
        cd "$(dirname "$file")" && file="$(basename "$file")"
        tmux new-session -s "$@" "sudo openvpn ${file:-$@} || read"
esac