#!/bin/sh
###############################################################################
# dwm-screen-lock
#
# This script is called when the user wants to lock the screen (it is a wrapper
# for slock).
#
# -----------------------------------------------------------------------------
# DWM Scripts - wrapper for dwm/dmenu/slock
#   (C) 2007-2009 Gerardo García Peña
#   Programmed by Gerardo García Peña
#
#   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 of the License, 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 this program; if not, write to the Free Software Foundation, Inc., 51
#   Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#
###############################################################################

. dwm-config-read

# TODO: Lock check
if [ -z "$DSW_LOCK" ]; then
  log "Choosing the best screen locker..."
  if which gnome-screensaver > /dev/null 2>&1; then
    DSW_LOCK="gnome-screensaver"
  else
    if which slock > /dev/null 2>&1; then
      DSW_LOCK="slock"
    else
      if which dpms > /dev/null 2>&1; then
        DSW_LOCK="dpms"
      else
        error 'No screen locker available.'
        DSW_LOCK="none"
      fi
    fi
  fi
  log "Choosed screensaver '$DSW_LOCK' automatically."
else
  DSW_LOCK=`basename "$DSW_LOCK"`
fi

log "Configuring '$DSW_LOCK'..."
case "$DSW_LOCK" in
gnome*)
  DSW_LC="`which gnome-screensaver-command` --lock"
  DSW_LI="`which gnome-screensaver`"
  ;;
slock)
  DSW_LC="`which slock`"
  DSW_LI=""
  ;;
dpms)
  DSW_LC=""
  DSW_LI="`which xset` dpms 300 300 300"
  ;;
none)
  exit 0
  ;;
*)
  error "Unknown screen locker '$DSW_LOCK'."
  exit 1
esac

if [ "$1" ]; then
  case "$1" in
  --init)
    log "Initializing '$DSW_LOCK'..."
    $DSW_LI \
      || ( error "Cannot initialize screen locker."; exit 1 )
    ;;
  *)
    error "Bad option '$1'."
    exit 1
  esac
else
  msg '==================== GOING TO LOCK THIS SCREEN ===================='
  sleep 1
  $DSW_LC \
    || msg '!!! CANNOT LOCK SCREEN - '$DSW_LOCK' FAILED !!!'
fi

exit 0