#!/bin/bash

proxy_ip=$(env | grep http_proxy | grep -Pio '[^@/:]+(?=:\d+/?$)')
proxy_port=$(env | grep http_proxy | grep -Pio '(?<=:)(\d+)(?=/?$)')

if [ -z "${proxy_ip}" ]; then
  echo "Enter Proxy IP or Hostname (no port): "
  read proxy_ip
fi
if [ -z "${proxy_ip}" ]; then
  echo -n "Proxy-Port: "
  read proxy_port
fi

echo "Using ${proxy_ip}:${proxy_port} as Proxy!"

echo -n "Username: "
read username
echo -n "Password: "
read -s password
user=$(logname)
bashrc_file=/home/${user}/.bashrc
proxy_file=/home/${user}/.http_proxy
noproxy_file=/home/${user}/.http_noproxy

encpassword=$(echo -n ${password}  | xxd -p | sed -e 's/\(..\)/%\1/g' )

if ! grep -qF -e "PROXY_A93JK2" "${bashrc_file}" ; then
  echo "[ -f ${proxy_file} ] && . ${proxy_file} #PROXY_A93JK2" >> "${bashrc_file}"
  echo "[ -f ${noproxy_file} ] && . ${noproxy_file} #PROXY_A93JK2" >> "${bashrc_file}"
fi

echo 'export "HTTP_PROXY=http://'"${username}"':"'"${encpassword}@${proxy_ip}:${proxy_port}/"  > "${proxy_file}"
echo 'export "HTTPS_PROXY=http://'"${username}"':"'"${encpassword}@${proxy_ip}:${proxy_port}/"  >> "${proxy_file}"
echo 'export "http_proxy=http://'"${username}"':"'"${encpassword}@${proxy_ip}:${proxy_port}/"  >> "${proxy_file}"
echo 'export "https_proxy=http://'"${username}"':"'"${encpassword}@${proxy_ip}:${proxy_port}/"  >> "${proxy_file}"
[ -f "${noproxy_file}" ] || echo 'export "NO_PROXY=localhost,127.0.0.1"' > "${noproxy_file}"