#!/usr/bin/env bash

# shellcheck shell=bash

# ``````````````````````````````````````````````````````````````````````````````
# Function name: CreateWebProxyProcess()
#
# Description:
#   It creates web proxy process like a polipo, privoxy or hpts
#
# Usage:
#   CreateWebProxyProcess
#
# Examples:
#   CreateWebProxyProcess
#

function CreateWebProxyProcess() {

  # shellcheck disable=SC2034
  local _FUNCTION_ID="CreateWebProxyProcess"
  local _STATE=0

  local _proxy_http_state=0

  # shellcheck disable=SC2154
  if [[ "$frontend_type" == "haproxy" ]] ; then

    # shellcheck disable=SC2154
    if [[ "$proxy_type" = *"polipo"* ]] || \
       [[ "$proxy_type" = *"privoxy"* ]] || \
       [[ "$proxy_type" = *"hpts"* ]] ; then

      if [[ "$proxy_type" == "polipo" ]] ; then

        # shellcheck disable=SC2154
        _pfd="${_tml_po1}.${_bk_port_new}"

        # shellcheck disable=SC2154
        cp "${_tml_po0}" "${_pfd}"

        printf "proxyPort = %d\\n" "$_bk_port_new" \
        >>"${_pfd}"

        # shellcheck disable=SC2154
        printf "socksParentProxy = \"127.0.0.1:%d\"\\n" "$_bk_port" \
        >>"${_pfd}"

        _proxy_http_state=1

        _logger "info" \
          "${_FUNCTION_ID}()" \
          "added backend port (polipo): '$_bk_port'"

        polipo -c "${_pfd}"

      elif [[ "$proxy_type" == "privoxy" ]] ; then

        # shellcheck disable=SC2154
        _pfd="${_tml_po1}.${_bk_port_new}"

        # shellcheck disable=SC2154
        cp "${_tml_po0}" "${_pfd}"

        # https://github.com/trimstray/multitor/issues/15
        # shellcheck disable=SC2154,SC2129
        # printf "logfile privoxy.%d\\n" "$_bk_port_new" \
        # >>"${_pfd}"

        # shellcheck disable=SC2154,SC2129
        printf "listen-address 127.0.0.1:%d\\n" "$_bk_port_new" \
        >>"${_pfd}"

        # shellcheck disable=SC2154,SC2129
        printf "forward-socks5t / 127.0.0.1:%d .\\n" "$_bk_port" \
        >>"${_pfd}"

        # shellcheck disable=SC2034
        _proxy_http_state=1

        _logger "info" \
          "${_FUNCTION_ID}()" \
          "added backend port (privoxy): '$_bk_port'"

        privoxy "${_pfd}"

      elif [[ "$proxy_type" == "hpts" ]] ; then

        # shellcheck disable=SC2034
        _proxy_http_state=1

        _logger "info" \
          "${_FUNCTION_ID}()" \
          "added backend port (hpts): '$_bk_port'"

        hpts -s 127.0.0.1:"${_bk_port}" -p "${_bk_port_new}" >/dev/null 2>&1 &

      fi

    fi

  else

    # shellcheck disable=SC2154
    if [[ "$proxy_type" = *"polipo"* ]] || \
       [[ "$proxy_type" = *"privoxy"* ]] || \
       [[ "$proxy_type" = *"hpts"* ]] ; then

      if [[ "$proxy_type" == "polipo" ]] ; then

        # shellcheck disable=SC2154
        # _pfd="${_tml_po1}.${_bk_port_new}"
        _pfd="${_tml_po1}"

        # shellcheck disable=SC2154
        cp "${_tml_po0}" "${_pfd}"

        printf "proxyPort = %d\\n" "$_bk_port_new" \
        >>"${_pfd}"

        # shellcheck disable=SC2154
        printf "socksParentProxy = \"127.0.0.1:%d\"\\n" "$_bk_port" \
        >>"${_pfd}"

        _proxy_http_state=1

        _logger "info" \
          "${_FUNCTION_ID}()" \
          "added backend port (polipo): '$_bk_port'"

        polipo -c "${_pfd}"

      elif [[ "$proxy_type" == "privoxy" ]] ; then

        # shellcheck disable=SC2154
        # _pfd="${_tml_po1}.${_bk_port_new}"
        _pfd="${_tml_po1}"

        # shellcheck disable=SC2154
        cp "${_tml_po0}" "${_pfd}"

        # https://github.com/trimstray/multitor/issues/15
        # shellcheck disable=SC2154,SC2129
        # printf "logfile privoxy.%d\\n" "$_bk_port_new" \
        # >>"${_pfd}"

        # shellcheck disable=SC2154,SC2129
        printf "listen-address 127.0.0.1:%d\\n" "$_bk_port_new" \
        >>"${_pfd}"

        # shellcheck disable=SC2154,SC2129
        printf "forward-socks5t / 127.0.0.1:%d .\\n" "$_bk_port" \
        >>"${_pfd}"

        # shellcheck disable=SC2034
        _proxy_http_state=1

        _logger "info" \
          "${_FUNCTION_ID}()" \
          "added backend port (privoxy): '$_bk_port'"

        privoxy "${_pfd}"

      elif [[ "$proxy_type" == "hpts" ]] ; then

        # shellcheck disable=SC2034
        _proxy_http_state=1

        _logger "info" \
          "${_FUNCTION_ID}()" \
          "added backend port (hpts): '$_bk_port'"

        hpts -s 127.0.0.1:"${_bk_port}" -p "${_bk_port_new}" >/dev/null 2>&1 &

      fi

    fi

  fi

  return $_STATE

}