#!/usr/bin/env bash

# ─< Check if the given command exists silently >─────────────────────────────────────────
command_exists() {
  command -v "$@" >/dev/null 2>&1
}

wg-setup() {
  shopt -s nullglob
  local peers=()
  local ip
  ip="$(ip ad)"

  for p in /etc/wireguard/*; do
    # NOTE:
    # get names without .conf
    # /etc/wireguard/wg0.conf would convert to `wg0` only
    peers+=("$(basename ${p%.conf})")
  done

  case "${1:-up}" in
  up)
    cmd="wg-quick up"
    ;;
  down)
    cmd="wg-quick down"
    ;;
  esac

  for peer in "${peers[@]}"; do
    $cmd $peer
  done
}

wg-setup "$@"