#!/usr/bin/env bash

requirements_unknown_binaries()
{
  while
    (( $# ))
  do
    __rvm_which "$1" >/dev/null || missing_libs+=( "$1" )
    shift
  done
}

requirements_unknown_run()
{
  case "$1" in
    (update-system)
      echo "Always update your system first!"
      ;;

    (rvm)
      requirements_unknown_binaries bash curl patch
      ;;

    (jruby*)
      requirements_unknown_binaries make java

      if
        is_head_or_disable_binary "$1"
      then
        requirements_unknown_binaries git
        case $( jruby_installation_method  "$1" ) in
          ant) requirements_unknown_binaries ant ;;
          mvn) requirements_unknown_binaries mvn ;;
        esac
      fi
      ;;

    (ir*)
      requirements_unknown_binaries mono
      ;;

    (opal)
      requirements_unknown_binaries nodejs npm
      ;;

    (*-head)
      requirements_unknown_binaries openssl sqlite3 libtool autoconf automake bison pkg-config git
      missing_libs+=( build-essential libreadline zlib1g libyaml libc6 libgdbm ncurses )
      ;;

    (*)
      requirements_unknown_binaries openssl sqlite3 libtool autoconf automake bison pkg-config git
      missing_libs+=( build-essential libreadline zlib1g libyaml libc6 libgdbm ncurses )
      ;;
  esac
}

requirements_unknown_wait_key()
{
  rvm_is_a_shell_function no_warning ||
  {
    rvm_error "
RVM was not able to detect your system type and does not know how to load extra library paths for your system (if it's needed), read:

    rvm help autolibs

for details how to disable this message.
"
    return 1
  }
  rvm_log "press any key to continue"
  \typeset _read_char_flag anykey
  [[ -n "${ZSH_VERSION:-}" ]] && _read_char_flag=k || _read_char_flag=n
  builtin read -${_read_char_flag} 1 -s -r anykey
}

requirements_unknown_update_system()
{
  echo "Always update your system first!"
}

requirements_unknown_define()
{
  \typeset __reqirement
  \typeset -a missing_libs
  missing_libs=()
  for __reqirement
  do requirements_unknown_run "${__reqirement}"
  done
  echo "Install: ${missing_libs[*]}"
  requirements_unknown_wait_key || return $?
}