#!/usr/bin/env bash

# AMD64, i386, ARM - this is different from _system_arch as it's not translated.
requirements_debian_arch()
{
  __architecture="$(dpkg --print-architecture)"
}

# Queries the dpkg system for packages that are installed only asking about
# the package name and it's arch.  This package will fall back to :all for
# cases where we cannot get an arch specific package (such is the case
# for a few packages.)

requirements_debian_lib_installed()
{
  dpkg-query -s "${1}:${__architecture}" >/dev/null 2>&1 ||
  dpkg-query -s "${1}:all"               >/dev/null 2>&1 ||
  dpkg-query -s "$1" 2>/dev/null | __rvm_grep "Architecture: ${__architecture}" >/dev/null ||
  dpkg-query -s "$1" 2>/dev/null | __rvm_grep "Architecture: all"               >/dev/null ||
  return $?
}

# Informs us if a package is even available on the distro we are working
# with, this is more of a transitional method kind of like Ubuntu
# has a transitional git-core package right now.  This will allow us
# to continue to support older versions of Ubuntu while enforcing newer
# packages on newer Ubuntu.

requirements_debian_lib_available()
{
  apt-cache show "$1" >/dev/null 2>&1 || return $?
}

requirements_debian_libs_install()
{
  __rvm_try_sudo apt-get --no-install-recommends --yes install "$@" || return $?
}

requirements_debian_libs_remove()
{
  __rvm_try_sudo apt-get --yes remove "$@" || return $?
}

requirements_debian_update_system()
{
  __rvm_try_sudo apt-get --quiet --yes update ||
  {
    \typeset __ret=$?
    case ${__ret} in
      (100)
        rvm_error "There has been an error while updating your system using \`apt-get\`.
It seems that there are some 404 Not Found errors for repositories listed in:

    /etc/apt/sources.list
    /etc/apt/sources.list.d/*.list

Make sure that all repositories are available from your system and verify your setup by running manually:

    sudo apt-get update

Make sure that it works correctly before proceeding with RVM.

If you are working from the GUI instead of the terminal, you might want to verify and fix broken
repositories using \"Software & Updates\" application.
"
        ;;
    esac
    return ${__ret}
  }
}

requirements_debian_define_libgmp()
{
  if [[ "${_system_version}" == 6* ]]
  then
    requirements_check libgmp3-dev
  else
    requirements_check libgmp-dev
  fi
}

requirements_debian_define_libreadline()
{
  if
    __rvm_version_compare ${_system_version} -ge 9
  then
    requirements_check libreadline-dev
  else
    requirements_check libreadline6-dev
  fi
}

requirements_debian_define_libssl()
{
  # Legacy libssl-dev required by older version of ruby has been renamed to libssl1.0-dev
  # starting from Debian 9 (Stretch)

  case "$1" in
    (ruby-2.3*|ruby-2.2*|ruby-2.1*|ruby-2.0*|ruby-1.9*|ruby-1.8*)
      if
        __rvm_version_compare ${_system_version} -ge 9
      then
        undesired_check libssl-dev
        requirements_check libssl1.0-dev
      else
        requirements_check libssl-dev
      fi
      ;;

    (*)
      requirements_check libssl-dev
      ;;
  esac
}

requirements_debian_define_clang_llvm()
{
  requirements_check clang-3.6 llvm-3.6 llvm-3.6-dev
}

requirements_debian_define_base()
{
  requirements_check "$@" \
    autoconf automake bison ca-certificates curl libc6-dev libffi-dev libgdbm-dev libncurses5-dev \
    libsqlite3-dev libtool libyaml-dev make openssl patch pkg-config sqlite3 zlib1g zlib1g-dev

  requirements_${_system_name_lowercase}_define_libgmp
  requirements_${_system_name_lowercase}_define_libreadline
}

requirements_debian_define_java()
{
  update-alternatives --list ${1:-java} >/dev/null 2>&1 ||
    requirements_check_fallback \
      openjdk-8-jre-headless openjdk-8-jdk oracle-j2sdk1.8 \
      openjdk-7-jre-headless openjdk-7-jdk oracle-j2sdk1.7 \
      openjdk-6-jre-headless opendjk-6-jdk oracle-j2sdk1.6
}

requirements_debian_define()
{
  \typeset __architecture
  requirements_debian_arch

  if [[ "$1" == *head ]]
  then
      requirements_check_fallback git git-core
  fi

  case "$1" in
    (rvm)
      requirements_check bash curl patch bzip2 ca-certificates gawk
      ;;

    (jruby*)
      requirements_check g++ make
      if
        is_head_or_disable_binary "$1"
      then
        requirements_debian_define_java javac
        requirements_check_fallback git git-core
        case $( jruby_installation_method  "$1" ) in
          ant) __rvm_which ant >/dev/null || requirements_check ant                   ;;
          mvn) __rvm_which mvn >/dev/null || requirements_check_fallback maven maven2 ;;
        esac
      else
        requirements_debian_define_java java
      fi
      ;;

    (ir*)
      requirements_check curl mono-2.0-devel
      ;;

    (opal)
      requirements_check nodejs npm
      ;;

    (rbx*|rubinius*)
      requirements_debian_define_base flex ruby-dev libreadline-dev libedit-dev
      requirements_${_system_name_lowercase}_define_libssl "$1"
      requirements_${_system_name_lowercase}_define_clang_llvm "$1"
      ;;

    (truffleruby*)
      requirements_debian_define_base
      requirements_${_system_name_lowercase}_define_libssl "$1"
      requirements_check make gcc libxml2
      ;;

    (*)
      requirements_debian_define_base g++ gcc
      requirements_${_system_name_lowercase}_define_libssl "$1"
      ;;
  esac
}