#!/bin/bash

PIPE="/var/run/vpnd.sock"
send_cmd() {
    [ -p $PIPE ] && echo "$@" > $PIPE && \
        cat < $PIPE
}

send_router_cmd() {
    touch "${HOME}/.local/state/.vpn_loading"
    pkill -36 dwmblocks
    ssh router vpn "$1" laptop 2>/dev/null
    rm "${HOME}/.local/state/.vpn_loading"
}

DEFAULT_LINK="$(resolvectl status | grep 'Default Route: yes' -B10 | grep 'Link' | tail -1 | grep -Eo '\(.*\)' | tr -d '()')"

if resolvectl domain "$DEFAULT_LINK" | grep -q 'wzray.com'; then
    IS_LOCAL=1
fi

IFNAME="rix"

while [ "$#" -gt 0 ]; do
    case "$1" in
        'm'|'msk') IFNAME='msk';;
        '-v'|'--verbose') VERBOSE=1;;
        *) echo "Wrong argument!"; exit 1;;
    esac
    shift
done

if [ -z "${VERBOSE}" ]; then
    exec &>/dev/null
else
    set -x
fi

UP_NAME="$(send_cmd status)"

if [ -n "$IS_LOCAL" ]; then
    if [ -n "$UP_NAME" ]; then
        send_cmd down
    else
        send_router_cmd toggle
    fi
else
    if [ -n "${UP_NAME}" ]; then
        if [ "${UP_NAME}" != "${IFNAME}" ]; then
            send_cmd down
            send_cmd up "$IFNAME"
        else
            send_cmd down
        fi
    else
        send_cmd up "$IFNAME"
    fi
fi


pkill -36 dwmblocks

# vim: ft=bash