#!/bin/sh

################################################################################
#      This file is part of OpenELEC - http://www.openelec.tv
#      Copyright (C) 2009-2011 Stephan Raue (stephan@openelec.tv)
#
#  This Program 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, or (at your option)
#  any later version.
#
#  This Program 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.tv; see the file COPYING.  If not, write to
#  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
#  http://www.gnu.org/copyleft/gpl.html
################################################################################

. config/options $1

deps=
deps_pkg=
files=
files_pkg=

case $1 in
  get)
    deps="wget"
    deps_pkg="wget"
    ;;
  build)
    deps="gcc g++ sed patch touch makedepend nasm tar bzip2 gzip lzma perl flex bison cp gawk makeinfo gettext autopoint gperf autoconf automake m4 cvs zip unzip mkfontscale libtool diff byacc xsltproc msgfmt"
    deps_pkg="gcc g++ sed patch fileutils makedepend nasm tar bzip2 gzip lzma perl flex bison coreutils gawk texinfo gettext gettext-devel gperf autoconf automake m4 cvs zip unzip xutils libtool diff byacc xsltproc gettext"
    files="/usr/include/stdio.h /usr/include/zlib.h /usr/include/ncurses.h"
    files_pkg="libc6-dev zlib1g-dev libncurses5-dev"
    ;;
  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

  [ -f /etc/lsb-release ] && . /etc/lsb-release

  if [ -n "`which aptitude 2>/dev/null`" ]; then
    DISTRO="a Debian" 
    [ "$DISTRIB_ID" = "Ubuntu" ] && DISTRO="an Ubuntu"
    echo "**** You seem to use $DISTRO system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    [ "$ans" = "y" ] && sudo aptitude install $need_pkg
  elif [ -f /etc/mandrake-release -a -n "`which urpmi 2>/dev/null`" ]; then
    echo "**** You seem to use a mandrake system ****"
    read -p "would you like to install the needed tools ? (y/n) " ans
    [ "$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
  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