#!/usr/bin/env bash

#                                     ╭──────────────╮
#                                     │ proxy config │
#                                     ╰──────────────╯
# ─────────────────────────────────────< unset proxy >───────────────────────────────────
noproxy() {
  unset {HTTP_PROXY,HTTPS_PROXY,http_proxy,https_proxy}
}

# ──────────────────< proxy function to set or show the proxy variables >────────────────
proxy() {
  local ip="172.22.11.69"
  local port="8080"

  if [ -z "$1" ]; then
    echo "Usage: proxy [--show|--set]"
    echo "  --show   Show current proxy settings"
    echo "  --set    Set proxy to $ip:$port"
    return 0
  fi

  case "$1" in
  --show)
    echo "These are your proxy configurations:"
    if [ -n "${http_proxy}" ] || [ -n "${HTTP_PROXY}" ] || [ -n "${https_proxy}" ] || [ -n "${HTTPS_PROXY}" ]; then
      echo "http: ${http_proxy}| HTTP: ${HTTP_PROXY}"
      echo "https: ${https_proxy}| HTTPS: ${HTTPS_PROXY}"
    else
      echo "No proxy configured."
    fi
    ;;
  --set)
    # ─< Check if the IP and port are reachable >─────────────────────────────────────────────
    if nc -z -w5 $ip $port; then
      # ─< If reachable, set the proxy environment variables >──────────────────────────────────
      local proxy="http://${ip}:${port}"

      for e in http_proxy HTTP_PROXY https_proxy HTTPS_PROXY; do
        export "${e}=${proxy}"
      done

      echo "Proxy set to: $proxy"
    else
      echo "IP $ip with port $port is not reachable."
    fi
    ;;
  *)
    echo "Invalid option! Use --show or --set."
    ;;
  esac
}

# ────────────< check network availability and set proxy if in correct network >────────────
noproxy
if ping -c 1 -W 2 swu.dom &>/dev/null; then
  proxy --set
else
  noproxy
fi