#!/usr/bin/env bash

requirements_find_osx_port()
{
  if # find macports in PATH
    __rvm_which port >/dev/null 2>&1
  then
    return 0
  else # find macports out of PATH and link to rvm/bin
    \typeset __binary
    for __binary in ~/opt/local/bin/port ~/.opt/local/bin/port /usr/local/bin/port /opt/local/bin/port
    do
      if
        [[ -f "${__binary}" && -s "${__binary}" && -x "${__binary}" ]]
      then
        PATH="$PATH:${__binary%/*}"
        return 0
      fi
    done
    return 1
  fi
}

requirements_osx_port_version_list()
{
  if __rvm_which $1 >/dev/null
  then $1 --version 2>/dev/null | __rvm_sed -n -e '1{s/^.* //; p;}'
  fi
  port -q installed $1* 2>/dev/null | __rvm_sed -e 's/.* @//' -e 's/_.*//' -e 's/ .*//'
}

requirements_osx_port_lib_available()
{
  port info $1 >/dev/null 2>&1 || return $?
}

requirements_osx_port_lib_installed()
{
  port -q installed $1 | __rvm_grep active >/dev/null || return $? ;
}

requirements_osx_port_libs_install()
{
  __rvm_try_sudo port install "$@" ||
  {
    \typeset ret=$?
    # TODO: offer more help!
    rvm_warn "There were package installation errors, make sure to read the log."
    return $ret
  }
}

requirements_osx_port_before()
{
  requirements_osx_port_ensure_port_available || return $?
}

requirements_osx_port_libs_default()
{
  port_libs=(
    autoconf automake gdbm libffi libiconv libksba libtool libyaml pkgconfig readline sqlite3 zlib
  )
  
  case "$1" in
    (*-head) __rvm_which git >/dev/null || port_libs+=( git )
      ;;
  esac
  
  __rvm_selected_compiler >/dev/null ||
  case "$1" in
    (ruby-1*|ree*)
      if
        __rvm_compiler_is_llvm # install gcc only if not yet available
      then
        if __rvm_version_compare "${_system_version}" -ge 10.8
        then port_libs+=( gcc49 )
        else port_libs+=( apple-gcc42 )
        fi
      fi
      ;;
  esac
  
  # LibreSSL is a fork of OpenSSL and is interchangable
  # If it is installed, then don't worry about OpenSSL
  if
    ! requirements_osx_port_lib_installed libressl
  then
    port_libs+=( openssl )
  fi
  
  if
    requirements_osx_port_lib_installed ncursesw
  then
    rvm_error "\
Error! ncursesw was replaced by ncurses a long time ago, please uninstall 'ncursesw',
         for more details check http://comments.gmane.org/gmane.os.apple.macports.user/28039"
    return 1
  else
    port_libs+=( ncurses  )
  fi
  
  requirements_check_fallback curl-ca-bundle certsync || return $?
  requirements_check "${port_libs[@]}" || return $?
}

requirements_osx_port_update_system()
{
  __rvm_try_sudo port -dv selfupdate || return $?
}

requirements_osx_port_define()
{
  case "$1" in
    (rvm)
      true
      ;;

    (jruby*)
      requirements_check make

      if
        is_head_or_disable_binary "$1"
      then
        __rvm_which git >/dev/null || requirements_check git
        case $( jruby_installation_method  "$1" ) in
          mvn) requirements_check_custom_after mvn=maven ;;
        esac
      fi

      requiremnts_osx_java_fail || return $?
      ;;

    (ir*)
      __rvm_which mono >/dev/null 2>&1 || return $?
      ;;

    (opal)
      requirements_osx_port_libs_ensure node
      ;;

    (truffleruby*)
      requirements_check openssl
      ;;

    (ruby*head)
      __rvm_which git >/dev/null || requirements_check git
      requirements_osx_port_libs_default "$1"
      requirements_version_minimal autoconf 2.67
      ;;

    (*-head)
      __rvm_which git >/dev/null || requirements_check git
      requirements_osx_port_libs_default "$1" || return $?
      ;;

    (*)
      requirements_osx_port_libs_default "$1" || return $?
      ;;
  esac
}

requirements_osx_port_after()
{
  \typeset port_root
  port_root="$( __rvm_which port 2>/dev/null )" && # get    binary and
  [[ -n "${port_root}" && -x "${port_root}"  ]] && # verify binary and
  __rvm_readlink_deep port_root                    # resolve any links to point to the final target
  [[ -n "${port_root}" && -x "${port_root}"  ]] && # verify binary and
  port_root="${port_root%%/bin/port}"              # get    root
  [[ -n "${port_root}" && -d "${port_root}" ]]  || # verify root   or
  port_root="/opt/local"                           # fallback to default

  __rvm_update_configure_opt_dir "$1" "${port_root}" || return $?

  __rvm_selected_compiler >/dev/null ||
  case "${port_libs[*]}" in
    (*apple-gcc42*)
      export CC=gcc-apple-4.2
      ;;
    (*gcc48*)
      export CC=gcc-mp-4.8
      ;;
    (*gcc49*)
      export CC=gcc-mp-4.9
      ;;
  esac

  unset port_libs

  __rvm_add_to_path prepend "${port_root}/bin"
  rvm_debug "PATH=$PATH"

  case "$1" in
    (jruby*) true ;;
    (*) requirements_osx_port_after_update_certs_openssl ;;
  esac
}

requirements_osx_port_after_update_certs_openssl()
{
  requirements_osx_update_openssl_cert "${port_root}/bin/openssl" || return $?
}

requirements_osx_port_install_port()
{
  \typeset macports_version
  macports_version="$(
    __rvm_curl https://distfiles.macports.org/MacPorts/ |
    __rvm_grep -Eo "<a href=\"MacPorts-[[:digit:]\.]+.tar.bz2\">" |
    __rvm_awk -F'"' '{print $2}' |
    __rvm_version_sort |
    __rvm_tail -n 1
  )" #'
  macports_version="${macports_version%.tar.bz2}"
  : macports_version:${macports_version:=MacPorts-2.1.3}
  mkdir "${rvm_src_path}/${macports_version}"
  cd    "${rvm_src_path}/${macports_version}"
  __rvm_curl "https://distfiles.macports.org/MacPorts/${macports_version}.tar.bz2" | tar -xj --strip 1
  __rvm_check_pipestatus ${PIPESTATUS[@]} ${pipestatus[@]} || return $?
  ./configure &&
  __rvm_make &&
  # plain make is required for sudo
  __rvm_try_sudo make install || return $?
  true # for OSX
}

requirements_osx_port_ensure_port_available()
{
  __rvm_which port >/dev/null ||
  {
    __rvm_which make > /dev/null &&
    {
      __rvm_which clang > /dev/null ||
      __rvm_which gcc-4.2 > /dev/null
    } ||
    {
      rvm_error "Can not find compiler and 'make' tool - make sure Xcode and/or Command Line Tools are installed."
      return 11
    }
    rvm_requiremnts_fail_or_run_action 2 \
      "Requested installation with macports libs, but macports is not available." \
      __rvm_log_command port_install "Installing macports" requirements_osx_port_install_port ||
      return $?

    # make sure the new installation is in PATH
    __rvm_which port >/dev/null || PATH="$PATH:/opt/local/bin"
  }
  true # for OSX
}