#!/bin/bash

rc_files="$HOME/.bash_profile $HOME/.bashrc $HOME/.zshrc"
if [[ "root" = "$(whoami)" ]] ; then
  rvm_path=/usr/local/rvm
  rc_files="$rc_files /etc/profile /etc/zshenv"
else
  rvm_path=$HOME/.rvm
fi

#
# Setup
#
item="$(tput setaf 2)* $(tput sgr0)"
question="\n$(tput setaf 2)<?>$(tput sgr0)"
cwd=$(pwd)
source_dir="${source_dir:-"$(dirname $0 | xargs dirname)"}"
if [[ ! -d "$source_dir" ]] ; then unset source_dir ; fi
source_dir="${source_dir:-$cwd}"

# State what is required to use rvm
echo -e "\n$(tput setaf 2)rvm$(tput sgr0)\n\n    shell scripts that allows a user to manage multiple ruby versions in their own account."
echo -e "\n    Installing rvm to $rvm_path ..."
for dir_name in src scripts bin log archives config gems examples ; do
  mkdir -p "$rvm_path/$dir_name"
done
cp -f "$source_dir/README" "$rvm_path/"

#
# Scripts
#
rm -rf $rvm_path/scripts # Clear the old scripts directory so that the old style rvm- scripts are cleared out.
for dir_name in config scripts examples lib ; do
  mkdir -p "$rvm_path/$dir_name"
  cp -Rf "$source_dir/$dir_name" "$rvm_path"
done ; unset dir_name

#
# Bin Scripts
#
cp -Rf "$source_dir/binscripts" $rvm_path/bin
chmod +x $rvm_path/bin/*
ln -nfs $rvm_path/scripts/rvm $rvm_path/bin/rvm

#
# RC Files
#
if [[ -z "$rvm_loaded_flag" ]] ; then
  for rcfile in $(echo $rc_files) ; do
    if [[ ! -f $rcfile ]] ; then touch $rcfile ; fi
    if [[ -z "$(awk '/\.rvm\/scripts\/rvm/' $rcfile)" ]] ; then
      echo "    Adding 'if [[ -s $rvm_path/scripts/rvm ]] ; then source $rvm_path/scripts/rvm ; fi' to $rcfile."
      echo -e "\n# rvm-install added line:\nif [[ -s $rvm_path/scripts/rvm ]] ; then source $rvm_path/scripts/rvm ; fi\n" >> $rcfile
    fi
  done
fi

if [[ "root" = "$(whoami)" ]] ; then
  ln -nfs $rvm_path/scripts/rvm /usr/local/bin/rvm
  chmod +x /usr/local/bin/rvm
fi

#
# System Checks
#
system="$(uname)"
echo -e "\n    $(tput setaf 3)NOTES: $(tput sgr0)\n"
if [[ "Linux" = "$system" ]] ; then
  rvm_apt_get_binary="$(which aptitude 2> /dev/null)"
  rvm_emerge_binary="$(which emerge 2> /dev/null)"
  rvm_pacman_binary="$(which pacman 2> /dev/null)"
  rvm_yum_binary="$(which yum 2> /dev/null)"

  if [[ ! -z "$rvm_apt_get_binary" ]] ; then
    echo -e "      $item For jRuby (if you wish to use it) you will need:"
    echo -e "        $ sudo aptitude install sun-java6-bin sun-java6-jre sun-java6-jdk"
    echo -e "      $item For ree (if you wish to use it) you will need:"
    echo -e "        $ sudo aptitude install libreadline5-dev libssl-dev bison"
    echo -e "      $item For 1.9.X (if you wish to use it) we additionally recommend:"
    echo -e "        $ sudo aptitude install libxml2-dev"

  elif [[ ! -z "$rvm_emerge_binary" ]] ; then
    echo -e "      $item For jRuby (if you wish to use it) you will need:"
    echo -e "        $ sudo emerge dev-java/sun-jdk dev-java/sun-jre-bin"

  elif [[ ! -z "$rvm_pacman_binary" ]] ; then
    echo -e "      $item For jRuby (if you wish to use it) you will need:"
    echo -e "        $ sudo pacman -Sy jdk jre"

  elif [[ ! -z "$rvm_yum_binary" ]] ; then
    echo -e "      $item For ree (if you wish to use it) you will need:"
    echo -e "        $ yum install -y rpm-build gcc gcc-c++ redhat-rpm-config ; then download and rpmbuild and install the sdk, Have fun..."

  else
    echo -e "      $item For jRuby (if you wish to use it) you will need:"
    echo -e "        The SUN java runtime environment and development kit."
  fi
elif [[ "Darwin" = "$system"  ]] ; then
  echo -e "      $item Be sure that you have XCode Tools installed in order to use rvm."
  echo -e "      $item If you intend on installing MacRuby you must install LLVM first."
fi

echo -e "      $item In order to use rvm the following line must occur in your shell's loading files, after all path/variable settings.:"
echo -e "      $item if [[ -s $rvm_path/scripts/rvm ]] ; then source $rvm_path/scripts/rvm ; fi"
echo -e "      $item CLOSE THIS SHELL AND OPEN A NEW ONE in order to use rvm."

echo -e "\n    \033[0;33mRTFM: $(tput sgr0) http://rvm.beginrescueend.com/ \n"
echo -e "$(tput setaf 2)w⦿‿⦿t!$(tput sgr0)"
echo -e "\n    ~ Wayne\n"

source $rvm_path/scripts/rvm
rvm -v
echo

exit 0