#!/bin/bash

################################################################################
#      This file is part of OpenELEC - http://www.openelec.tv
#      Copyright (C) 2009-2014 Stephan Raue (stephan@openelec.tv)
#
#  OpenELEC is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 2 of the License, or
#  (at your option) any later version.
#
#  OpenELEC is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with OpenELEC.  If not, see <http://www.gnu.org/licenses/>.
################################################################################

. config/options $1

deps=
deps_pkg=
files=
files_pkg=

case $1 in
  get)
    deps="wget"
    deps_pkg="wget"
    ;;
  build)
    deps="bash bc gcc g++ sed patch touch tar bzip2 gzip perl cp gawk makeinfo gperf cvs zip unzip mkfontscale mkfontdir bdftopcf diff xsltproc java"
    deps_pkg="bash bc gcc g++ sed patch fileutils tar bzip2 gzip perl coreutils gawk texinfo gperf cvs zip unzip xutils xfonts-utils diff xsltproc default-jre"
    files="/usr/include/stdio.h /usr/include/ncurses.h"
    files_pkg="libc6-dev libncurses5-dev"
    if [ -f /etc/redhat-release ]; then
      deps_pkg="bash bc gcc gcc-c++ sed patch fileutils tar bzip2 gzip perl coreutils gawk texinfo gperf cvs zip unzip xorg-x11-font-utils xorg-x11-font-utils diffutils libxslt java-1.7.0-openjdk"
      files_pkg="glibc-headers ncurses-devel"
    fi
    ;;
  qemu)
    if [ ! `which qemu` ]; then
      echo "Your system doesn't seem to have QEMU installed"
      exit 1
    fi
    ;;
esac

getarg() {
  eval echo \${$(($1+2))}
}

i=0
while dep=`getarg $i $deps` && [ -n "$dep" ]; do
  [ -z "`which $dep 2>/dev/null`" ] && need="$need $dep" && need_pkg="$need_pkg `getarg $i $deps_pkg`"
  i=$(($i+1))
done

i=0
while file=`getarg $i $files` && [ -n "$file" ]; do
  [ ! -f $file ] && need="$need $file" && need_pkg="$need_pkg `getarg $i $files_pkg`"
  i=$(($i+1))
done

if [ -n "$need" ]; then
  echo "**** Your system lacks the following tools needed to $1 $DISTRONAME ****"
  echo $need

  if  [ -f /etc/lsb-release ]; then
    DISTRO=$(grep DISTRIB_ID /etc/lsb-release | cut -d "=" -f 2)
  fi

  if [ "$DISTRO" = "Ubuntu" ]; then
    echo "**** You seem to use a $DISTRO system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    if ( ! [ -z "`which aptitude 2>/dev/null`" ] && [ "$ans" = "y" ]); then
      sudo aptitude install $need_pkg
    elif [ "$ans" = "y" ]; then
      echo "**** The recommended Package-Manager Aptitude is not installed"
      read -p "(y) install Aptitude :: (n) use APT " ans
      if [ "$ans" = "y" ]; then
        sudo apt-get -y install aptitude
        sudo aptitude install $need_pkg
      elif [ "$ans" = "n" ]; then
        sudo apt-get install $need_pkg
      else
        echo "********"
        exit 1
      fi
    else
      echo "********"
      exit 1
    fi
  elif ( ! [ -z "`which aptitude 2>/dev/null`" ]); then
   DISTRO="a Debian" 
   echo "**** You seem to use $DISTRO system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    if ([ "$ans" = "y" ] && ! [ $(sudo -n uptime 2>&1|grep "load"|wc -l) ]); then
      sudo aptitude install $need_pkg
    elif [ "$ans" = "y" ]; then
      su -c "aptitude install $need_pkg"
    else
      echo "********"
      exit 1
    fi
  elif [ -f /etc/mandrake-release -a -n "`which urpmi 2>/dev/null`" ]; then
    echo "**** You seem to use a mandrake system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    [ "$ans" = "y" ] && sudo urpmi $need_pkg
  elif [ -f /etc/gentoo-release -a -n "`which emerge 2>/dev/null`" ]; then
    echo "**** You seem to use a gentoo system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    [ "$ans" = "y" ] && sudo emerge -D $need_pkg
  elif [ -f /etc/fedora-release -a -n "`which yum 2>/dev/null`" ]; then
    echo "**** You seem to use a fedora system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    [ "$ans" = "y" ] && sudo yum install $need_pkg
  elif [ -f /etc/redhat-release -a "`which yum 2>/dev/null`" ]; then
    echo "**** You seem to use a RedHat or clone (CentOS) system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    [ "$ans" = "y" ] && sudo yum install $need_pkg
  else
    echo "********"
    exit 1
  fi
fi


need=""
need_pkg=""

i=0
while dep=`getarg $i $deps` && [ -n "$dep" ]; do
  [ -z "`which $dep 2>/dev/null`" ] && need="$need $dep" && need_pkg="$need_pkg `getarg $i $deps_pkg`"
  i=$(($i+1))
done

i=0
while file=`getarg $i $files` && [ -n "$file" ]; do
  [ ! -f $file ] && need="$need $file" && need_pkg="$need_pkg `getarg $i $files_pkg`"
  i=$(($i+1))
done

if [ -n "$need" ]; then
  echo "**** The following packages were not installed correctly ****"
  echo $need_pkg
  echo "********"
  exit 1
fi