#!/bin/bash
#
# by Rudson R. Alves
#
VERSION=${VERSION:='4.10.0'}
SVERSION=${SVERSION:=`cat /etc/slackware-version | awk '{ print $2 }'`}
KDE_DIR=${KDE_DIR:='/home/ftp/linux/kde46'}
SRC_DIR="$KDE_DIR/source"
URL_BASE=${URL:="taper.alienbase.nl/mirrors/alien-kde"}
URL="$URL_BASE/$SVERSION"
 
ACTION="fast"
VERBOSE=false
GETSRC=false
 
UPGRADE="upgradepkg"
INSTALL="installpkg"
REMOVE="removepkg"
 
if [ ! -e $KDE_DIR ]; then
  mkdir -p $KDE_DIR
fi
 
if [ ! -e $SCR_DIR ]; then
  mkdir -p $SRC_DIR
fi
 
# Automatically determine the architecture we're building on:
ARCH=$( uname -m )
case "$ARCH" in
  i?86|x86)
    ARCH=x86
    NOARCH=x86_64
  ;;
  x86_64)
    ARCH=x86_64
    NOARCH=x86
  ;;
  *)
    exit 1
    ;;
esac
 
 
function last_kde_version {
  lynx --dump http://$URL | awk '/^ +[0-9]+.*$/ { print $2 }' | tail -1 | sed 's/^.*\/\([0-9]\.[0-9]\+\.[0-9]\+\)\/$/\1/'
}
 
 
function fast_rsync {
  echo -e "\nGet Packages to $ARCH:"
  if $VERBOSE; then
    echo "rsync -av --delete --progress --exclude $NOARCH rsync://$URL/$VERSION/ $KDE_DIR/$VERSION/"
  fi
 
  cd $VERSION
  rsync -av --delete --progress --exclude $NOARCH rsync://$URL/$VERSION/ $KDE_DIR/$VERSION/
  cd ..
 
  if $GETSRC; then
    get_source
  fi
}
 
 
function all_rsync {
 echo -e "\nGet Packages to $ARCH:"
  if $VERBOSE; then
    echo "rsync -av --delete --progress rsync://$URL/$VERSION/ $KDE_DIR/$VERSION/"
  fi
 
  rsync -av --delete --progress rsync://$URL/$VERSION/ $KDE_DIR/$VERSION/
 
  get_source
}
 
 
function get_source {
  if [ ! -e $SRC_DIR/ ]; then
    mkdir -p $SRC_DIR
  fi
 
  echo -e "\nGet Source files:"
  if $VERBOSE; then
    echo "rsync -av --delete --progress rsync://$URL_BASE/source/$VERSION/ $SRC_DIR/$VERSION/"
  fi
  rsync -av --delete --progress rsync://$URL_BASE/source/$VERSION/ $SRC_DIR/$VERSION/
}
 
function help {
  echo "Use:"
  echo "  `basename $0` [option]"
  echo "   Where option is:"
  echo "   -f|--fast  to fast download in $ARCH packages, without source files"
  echo "   -a|--all   to download all files and arquiterures"
  echo "   -l|--last  get kde build last version"
  echo "   -d|--destiny <DEST>   set a source destiny"
  echo "   -D|--debug enable debug mode"
  echo "   -i|--install install packages"
  echo "   -u|--upgrade  to small upgrades"
  echo "   -s|--source   to down sources in fast download"
  echo "   -h|--help  to show help"
  exit 0
}
 
 
function print_head {
  echo ""
  echo "KDE rsync script"
  echo ""
  echo "KDE VERSION:   $VERSION"
  echo "repo DIR:      $KDE_DIR"
  echo "repo URL:      $URL"
  echo "System Arch:   $ARCH"
  echo "Slack Version: $SVERSION"
  echo ""
}
 
 
function install_kde {
  fast_rsync
  if ! check_mode; then 
    cd $CWD
    exit 1
  fi
 
  cd $VERSION
 
  echo
 
  if $VERBOSE; then
    echo "$UPGRADE --reinstall --install-new $ARCH/deps/*.t?z"
  fi
  $UPGRADE --reinstall --install-new $ARCH/deps/*.t?z 
 
  if $VERBOSE; then
    echo "$UPGRADE --reinstall --install-new $ARCH/kde/*.t?z"
  fi
  $UPGRADE --reinstall --install-new $ARCH/kde/*.t?z
 
  remove_old_pkgs
 
  slackpkg new-config
  cd ..
}
 
 
function upgrade_kde {
  fast_rsync
  if ! check_mode; then 
    cd $CWD
    exit 1
  fi
 
  cd $VERSION
 
  echo
 
  if $VERBOSE; then
    echo "$UPGRADE --install-new $ARCH/deps/*.t?z"
  fi
  $UPGRADE --install-new $ARCH/deps/*.t?z 
 
  if $VERBOSE; then
    echo "$UPGRADE --install-new $ARCH/kde/*.t?z"
  fi
  $UPGRADE --install-new $ARCH/kde/*.t?z
 
  remove_old_pkgs
 
  slackpkg new-config
  cd ..
}
 
 
function remove_old_pkgs {
  if [ $VERSION != "4.9.5" ]; then
    if $VERBOSE; then
      echo "$REMOVE kdegames"
    fi
    $REMOVE kdegames 2>/dev/null
 
    if $VERBOSE; then
      echo "$REMOVE printer-applet"
    fi
    $REMOVE printer-applet 2>/dev/null
  fi
 
  if $VERBOSE; then
    echo "$REMOVE kdemultimedia"
  fi
  $REMOVE kdemultimedia 2>/dev/null
 
  if $VERBOSE; then
    echo "$REMOVE ksecrets"
  fi
  $REMOVE ksecrets 2>/dev/null
 
  if $VERBOSE; then
    echo "$REMOVE printer-applet"
  fi
  $REMOVE printer-applet 2>/dev/null
 
  if $VERBOSE; then
    echo "$UPGRADE $ARCH/kdei/*.t?z"
  fi
  $UPGRADE $ARCH/kdei/*.t?z
 
  if $VERBOSE; then
    echo "slackpkg new-config"
  fi
}
 
 
function set_parameters {
  while [ "$1" ]; do
    case $1 in
      "-l"|"--last")
        echo "Get last kde build version..."
        VERSION=`last_kde_version`
      ;;
      "-f"|"--fast")
        echo "Fast RSync to $ARCH Binaries..."
        ACTION="fast"
      ;;
      "-a"|"--all")
        echo "RSync All..."
        ACTION="all"
      ;;
      "-i"|"--install")
        echo "Install..."
        ACTION="install"
      ;;
      "-u"|"--upgrade")
        echo "Upgrade..."
        ACTION="upgrade"
      ;;
      "-v"|"--verbose")
        echo "Verbose On..."
        VERBOSE=true
      ;;
      "-d"|"--destiny")
        echo "Set destiny..."
        KDE_DIR=$2
        shift
      ;;
      "-D"|"--debug")
        set -x
      ;;
      "-s"|"--source")
        echo "Down source..."
        GETSRC=true
      ;;
      *)
        help
        cd $CWD
        exit 0
      ;;
    esac
 
    shift
  done
}
 
 
function check_mode {
  # Check root user
  echo "Check root user..." 
  if [ "$USER" != "root" ]; then
    echo "\nERROR: Use this application as root user only!\n"
    return 1
  fi
 
  # Check single-user mode
  echo "Check single-user mode..."
  LEVEL=(`runlevel`)
  if [ ${LEVEL[1]} -eq 4 ]; then
    echo -e "\nERROR: Put yout machine in mode 1 or 3:\ntelinit 1/3\n"
    return 1
  fi
  return 0
}
 
 
# Start Program
CWD=$PWD
cd $KDE_DIR/
 
# set input
set_parameters "$@"
 
print_head
 
if [ -z $VERSION ]; then
  echo "Version Error..."
  exit 1
elif [ ! -e $VERSION ]; then
  if $VERBOSE; then
    echo "Create $VERSION directory..."
  fi
  mkdir $VERSION
fi
 
if [ $ACTION == "fast" ]; then
  fast_rsync
elif [ $ACTION == "all" ]; then
  all_rsync
elif [ $ACTION == "install" ]; then
  install_pkg
elif [ $ACTION == "upgrade" ]; then
  upgrade_kde
fi
 
cd $CWD