#!/bin/sh
# Copyright 1999, 2002, 2012  Patrick Volkerding, Moorhead, Minnesota USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# In the genuine installer we are possibly called by setup.xwmconfig so:
# chroot $T_PX /bin/bash /usr/bin/xwmconfig. But this prevent access to the
# installer from here. To avoid that now setup.xwmconfig calls us so:
# /usr/lib64/config/xwmconfig $T_PX
# But then, we need to to prefix most paths here with $T_PX. - Didier Spaier
T_PX=$1

export TEXTDOMAIN=slint
. gettext.sh

# First, let's bail if our being here doesn't make sense:
if [ ! -d $T_PX/etc/X11/xinit ]; then
  exit
fi
if [ "`cd $T_PX/etc/X11/xinit ; echo *.*`" = '*.*' ]; then
  exit
fi

if [ "$USER" = "root" ]; then
  TMP=$T_PX/var/log/setup/tmp
else
  TMP=$T_PX/$HOME/.xwmconfig
fi

if [ ! -d $TMP ]; then
 mkdir -p $TMP
 chmod 700 $TMP
fi

# Do we already have an existing default?
# If yes pre select it
# else pre select fvwm2
unset PRESELECT
if [ -L $T_PX/etc/X11/xinit/xinitrc ]; then
  CURRENT="`/bin/ls -l $T_PX/etc/X11/xinit/xinitrc | cut -f 2 -d '>' | cut -b2-`"
  PRESELECT=" --default-item $CURRENT "
elif [ -r $T_PX/etc/X11/xinit/xinitrc.fvwm2 ]; then
  PRESELECT=" --default-item xinitrc.fvwm2"
fi

# Figure out who we are and set up some background information:
if [ "$USER" = "root" ]; then
  BACKTITLE="--backtitle \"`gettext \"Setting system-wide default window manager in /etc/X11/xinit/\"`\""
else
  BACKTITLE="--backtitle \"`eval_gettext \"Setting default window manager in \\\$HOME/.xinitrc and \\\$HOME/.xsession\"`\""
fi

# This stops --backtitle from cluttering the initial install:
if [ ! -r /proc/kcore ]; then
  BACKTITLE=""
fi

# Remove any previous script:
rm -f $TMP/tmpscript.sh

# Add the top of the script:
if [ -r $T_PX/etc/X11/xinit/xinitrc.gnome -a -r $T_PX/etc/X11/xinit/xinitrc.kde ]; then
echo "#!/bin/sh
dialog --visit-items $BACKTITLE --title \"" >> $TMP/tmpscript.sh
gettext "SELECT DEFAULT WINDOW MANAGER FOR X" >> $TMP/tmpscript.sh
echo -n "\" $PRESELECT --menu \"" >> $TMP/tmpscript.sh
gettext "Please select the default window manager to use with the X Window \
System.  This will define the style of graphical user interface \
the computer uses.  KDE and GNOME provide the most features. People \
with Windows or MacOS experience will find either one easy to use.  \
Other window managers are easier on system \
resources, or provide other unique features." >> $TMP/tmpscript.sh
echo -n '" 12 80 0 ' >> $TMP/tmpscript.sh
elif [ -r $T_PX/etc/X11/xinit/xinitrc.kde ]; then 
echo -n "#!/bin/sh
dialog --visit-items $BACKTITLE --title \"" >> $TMP/tmpscript.sh
gettext "SELECT DEFAULT WINDOW MANAGER FOR X" >> $TMP/tmpscript.sh
echo -n "\" $PRESELECT --menu \"" >> $TMP/tmpscript.sh
gettext "Please select the default window manager to use with the X Window \
System.  This will define the style of graphical user interface \
the computer uses.  KDE provides the most features, and people \
with Windows or MacOS experience will find it easy to use.  \
Other window managers are easier on system \
resources, or provide other unique features." >> $TMP/tmpscript.sh
echo -n '" 12 80 0 ' >> $TMP/tmpscript.sh
elif [ -r $T_PX/etc/X11/xinit/xinitrc.xfce ]; then
echo -n "#!/bin/sh
dialog --visit-items $BACKTITLE --title \"" >> $TMP/tmpscript.sh
gettext "SELECT DEFAULT WINDOW MANAGER FOR X" >> $TMP/tmpscript.sh
echo -n "\" $PRESELECT --menu \"" >> $TMP/tmpscript.sh
gettext "Please select the default window manager to use with the X Window \
System.  This will define the style of graphical user interface \
the computer uses.  XFce provides the most features, and people \
with Windows or MacOS experience will find it easy to use.  \
Other window managers are easier on system \
resources, or provide other unique features." >> $TMP/tmpscript.sh
echo -n '" 12 80 0 ' >> $TMP/tmpscript.sh
else
echo -n "#!/bin/sh
dialog --visit-items $BACKTITLE --title \"" >> $TMP/tmpscript.sh
gettext "SELECT DEFAULT WINDOW MANAGER FOR X" >> $TMP/tmpscript.sh
echo -n "\" $PRESELECT --menu \"" >> $TMP/tmpscript.sh
gettext "Please select the default window manager to use with the X Window \
System.  This will define the style of graphical user interface \
the computer uses." >> $TMP/tmpscript.sh
echo -n '" 12 80 0 ' >> $TMP/tmpscript.sh
fi

# Add KDE as the first and default entry:
if [ -r $T_PX/etc/X11/xinit/xinitrc.kde ]; then
  echo "\"xinitrc.kde\" \"`gettext "KDE: K Desktop Environment"`\" \\" >> $TMP/tmpscript.sh
fi

# Then, we add GNOME:
if [ -r $T_PX/etc/X11/xinit/xinitrc.gnome ]; then
  echo "\"xinitrc.gnome\" \"`gettext "GNU Network Object Model Environment"`\" \\" >> $TMP/tmpscript.sh
fi

# Add XFce:
if [ -r $T_PX/etc/X11/xinit/xinitrc.xfce ]; then
  echo "\"xinitrc.xfce\" \"`gettext "The Cholesterol Free Desktop Environment"`\" \\" >> $TMP/tmpscript.sh
fi	

# Add Enlightenment16:
if [ -r $T_PX/etc/X11/xinit/xinitrc.e16 ]; then
  echo "\"xinitrc.e16\" \"`gettext "The Enlightenment 16 window manager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add Enlightenment17:
if [ -r $T_PX/etc/X11/xinit/xinitrc.e16 ]; then
  echo "\"xinitrc.enlightenment17\" \"`gettext "The Enlightenment 17 window manager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add Fluxbox:
if [ -r $T_PX/etc/X11/xinit/xinitrc.fluxbox ]; then
  echo "\"xinitrc.fluxbox\" \"`gettext "The fluxbox window manager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add Blackbox:
if [ -r $T_PX/etc/X11/xinit/xinitrc.blackbox ]; then
  echo "\"xinitrc.blackbox\" \"`gettext "The blackbox window manager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add WindowMaker:
if [ -r $T_PX/etc/X11/xinit/xinitrc.wmaker ]; then
  echo "\"xinitrc.wmaker\" \"`gettext "WindowMaker"`\" \\" >> $TMP/tmpscript.sh
fi


# Add FVWM2:
if [ -r $T_PX/etc/X11/xinit/xinitrc.fvwm2 ]; then
  echo "\"xinitrc.fvwm2\" \"`gettext "F(?) Virtual Window Manager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add icewm:
if [ -r $T_PX/etc/X11/xinit/xinitrc.icewm ]; then
  echo "\"xinitrc.icewm\" \"`gettext "ICE Window Manager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add mate:
if [ -r $T_PX/etc/X11/xinit/xinitrc.mate ]; then
  echo "\"xinitrc.mate\" \"`gettext "The Mate desktop"`\" \\" >> $TMP/tmpscript.sh
fi

# Add twm:
if [ -r $T_PX/etc/X11/xinit/xinitrc.twm ]; then
  echo "\"xinitrc.twm\" \"`gettext "The Tab  Window Manager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add AfterStep:
if [ -r $T_PX/etc/X11/xinit/xinitrc.afterstep ]; then
  echo "\"xinitrc.afterstep\" \"`gettext "The AfterStep Window Menager"`\" \\" >> $TMP/tmpscript.sh
fi

# Add Awesome:
if [ -r $T_PX/etc/X11/xinit/xinitrc.awesome ]; then
  echo "\"xinitrc.awesome\" \"`gettext "The Mate desktop"`\" \\" >> $TMP/tmpscript.sh
fi


# Now, add support for the other window managers:
( cd $T_PX/etc/X11/xinit
  for file in xinitrc.* ; do
    if [ ! "$file" = "xinitrc.kde" -a ! "$file" = "xinitrc.gnome" \
      -a ! "$file" = "xinitrc.e16" -a ! "$file" = "xinitrc.wmaker" \
      -a ! "$file" = "xinitrc.fvwm2" -a ! "$file" = "xinitrc.enlightenment"\
      -a ! "$file" = "xinitrc.icewm" -a ! "$file" = "xinitrc.twm" \
      -a ! "$file" = "xinitrc.xfce" -a ! "$file" = "xinitrc.awesome" \
      -a ! "$file" = "xinitrc.blackbox" -a ! "$file" = "xinitrc.fluxbox" \
      -a ! "$file" = "xinitrc.mate" -a ! "$file" = "xinitrc.afterstep" ]; then
      echo "\"$file\" \"$file\" \\" >> $TMP/tmpscript.sh
    fi
  done
)

# Then, the tail end:
cat << EOF >> $TMP/tmpscript.sh
2> $TMP/output
if [ ! \$? = 0 ]; then
  rm -f $TMP/output
  gettext "Canceled."
  echo
  exit
fi
EOF

sh $TMP/tmpscript.sh

if [ ! -r $TMP/output ]; then
  rm -f $TMP/tmpscript.sh
  exit
fi

OUTPUT=`cat $TMP/output`

# If xwmconfig is run by root, it changes the system-wide default for users
# that do not have a $HOME/.xinitrc:
if [ "$USER" = "root" ]; then
  if [ -r $T_PX/etc/X11/xinit/$OUTPUT ]; then
    ( cd $T_PX/etc/X11/xinit ; rm -f xinitrc ; ln -sf $OUTPUT xinitrc )
	TMPFILE=$(mktemp)
	LXDM=/etc/lxdm/lxdm.conf
	case $OUTPUT in
		xinitrc.kde)
			sed /^session/s:.*:session=/usr/bin/startkde: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.gnome)	
			sed /^session/s:.*:session=/usr/bin/gnome-session: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.xfce)
			sed /^session/s:.*:session=/usr/bin/startxfce4: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.fvwm2)
			sed /^session/s:.*:session=/usr/bin/startfvwm2: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.icewm)
			sed /^session/s:.*:session=/usr/bin/icewm-session: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;	
		xinitrc.mate)
			sed /^session/s:.*:session=/usr/bin/mate-session: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.wmaker)
			sed /^session/s:.*:session=/usr/bin/wmaker: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.e16)
			sed /^session/s:.*:session=/usr/share/e16/misc/starte16: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.enlightenment)
			sed /^session/s:.*:session=/usr/bin/enlightenment_start: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.blackbox)
			sed /^session/s:.*:session=/usr/bin/startblackbox: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.fluxbox)
			sed /^session/s:.*:session=/usr/bin/startfluxbox: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.twm)
			sed /^session/s:.*:session=/usr/bin/starttwm: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		xinitrc.awesome)
			sed /^session/s:.*:session=/usr/bin/awesome: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
# TODO: provide a .desktop for AfterStep 
#		xinitrc.afterstep)
#			sed /^session/s:.*:session=/usr/bin/afterstep: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
		*)
			sed /^session/s:.*:session=/usr/bin/startfluxbox: $LXDM > $TMPFILE; mv $TMPFILE $LXDM;;
	esac
  fi
fi

# Also set up a new $HOME/.xinitrc and $HOME/.xinitrc:
if [ -r /etc/X11/xinit/$OUTPUT -a ! "$HOME" = "/" ]; then
  if [ -r $HOME/.xinitrc ]; then
    rm -f $HOME/.xinitrc-backup
    mv $HOME/.xinitrc $HOME/.xinitrc-backup
  fi
  cat /etc/X11/xinit/$OUTPUT > $HOME/.xinitrc
  if [ -r $HOME/.xsession ]; then
    rm -f $HOME/.xsession-backup
    mv $HOME/.xsession $HOME/.xsession-backup
  fi
  cat /etc/X11/xinit/$OUTPUT > $HOME/.xsession
  chmod 755 $HOME/.xsession
fi

rm -f $TMP/tmpscript.sh $TMP/output