#!/bin/bash
# $Id: /mirror/bin/trunk/ifliftwall 94 2008-07-28T13:44:06.642967Z thuswa  $
# Version: 0.6.1
# Last modified Mon Jul 28 15:43:39 2008 on violator
# Update count: 303
#
# Copyright (C) 2008 by Albert Thuswaldner, thuswa <at> gmail <dot> com
#                                                                       
# 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 3 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.,                                       
# 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             
#
# Purpose: 
# 
# Ifliftwall is a bash script which will choose and set a picture 
# from www.interfacelift.com as your KDE desktop wallpaper. 
# If you set it to autostart it will give you a new fresh background 
# as you login in, on a daily basis.  
# The wallpaper pictures are saved in the /tmp directory, a history of one
# week back in time is kept. The script does some basic checking 
# if the site is reachable and if the wallpaper already is the current one.
# A config file ~/.ifliftwall is used to store your desktop settings. 
#
# Usage: 
#        1.) put in ~/bin or somewhere in your path
#        2.) make executable
#        3.) Save your desktop settings by running:
#            ifliftwall --setting <aspect> <width> <height> <sort>
#        3.1) See Note #2 below for valid desktop settings  
#        3.2) See also Note #3 below for valid values for <sort>   
#        4.) test it!
#        5.) (at your option) run: ifliftwall --set-auto 
#            to make it autostart at login 
#        6.) Have a great time - all the time! ;)
#
# Tested: 
#
# On OpenSUSE 10.3, should work on most Linux distros, and other UNIX flavours 
# too albeit the arguments for the ping command have to be modified.  
#
#
# Note #1: The picture files that are downloaded will be stored in the 
#          /tmp/kde-<username> directory as default. The location can 
#          however be changed with the "--set-tmp" option. This script 
#          does not delete any of these files, so it is up to you. 
#          However, the way the file name is constructed: 
#          "ifliftwall.00N", where N equals the current weekday (N=1..7),  
#          does so that only a maximum of one week of wallpapers will be 
#          stored on your computer. 
#
# Note #2: List of resolution. If your desktop size is not listed below 
#          try using the closest higher resolution.
#
#          Aspect        Desktop Resolution   
#          --------      ------------------
#          widescreen:   2560x1600 1920x1200 1680x1050 1440x900 1280x800
#          fullscreen:   1600x1200 1400x1050 1280x1024 1280x960 1024x768
#        
# Note #3: Sort can have the following values:
#          date      = latest wallpapers 
#          downloads = most downloaded
#          ratings   = highest rating 
#          comments  = most commented 
#          random    = random sort  
#
# Note #4: The wallpapers that are downloaded may be used in accordance with  
#          http://interfacelift.com/site/license.html 
#          please read this.       

# Get date in correct format
# ------------------------------------------------------------------------
WDN=`date +%u`         #Weekday number
PDN=$(expr 8 - $WDN)   #Picture number

# Set temp file name
# ------------------------------------------------------------------------
TMPTPL=/ifliftwall.00 
CONFILE=$HOME/.ifliftwall

# Default settings
# ------------------------------------------------------------------------
MYSELF=
ASPECT="widescreen"    #screen aspect
RESWTH=1280            #screen width
RESHGT=800             #screen height
SORT="date"            #correspons to latest
TMPDIR=/tmp/kde-$USER  #dir where wallpapers are stored
FORCE=0                #No unconditional update


#"--auser $3 --all-sessions"

# Options section
# ------------------------------------------------------------------------
while [ $# -gt 0 ]; 
do
  case "$1" in
    "--force")
	# Update wallpaper anyway
	FORCE=1
	shift
	;;
    "--set-auto")
        # Set ifliftwall to autostart
	ln -s `which $0` $HOME/.kde/Autostart/ifliftwall
	shift
	;;
    "--user")
	MYSELF="--user $2 --all-sessions"
	shift;
	continue;
	;;
    "--set-tmp")
	# Set tmp dir where pictures are stored
	if [ -f $CONFILE ]
	then
	    . $CONFILE 
	fi

	echo -e "ASPECT=$ASPECT\nRESWTH=$RESWTH\nRESHGT=$RESHGT\nSORT=$SORT\nTMPDIR=$2" > $HOME/.ifliftwall
	shift; shift; shift; shift; shift;
	;;
    "--revert")
        # Revert back to yesterdays picture
	WDN=`expr $WDN - 1`
	if [ $WDN -eq 0 ]
	then
	    WDN=7
	fi
	TMPFILE=$TMPDIR$TMPTPL$WDN
	dcop $MYSELF kdesktop KBackgroundIface setWallpaper $TMPFILE 8  # 8=Scale and crop
	exit
	;;
    "--settings")
# Set resolution
	if [ $# -eq 5 ] 
	then
	    if [ -f $CONFILE ]
	    then
		. $CONFILE 
	    fi

	    echo -e "ASPECT=$2\nRESWTH=$3\nRESHGT=$4\nSORT=$5\nTMPDIR=$TMPDIR" > $HOME/.ifliftwall
	    shift; shift; shift; shift; shift;
	else
	    echo Please enter your screen settings: aspect width height
	    echo Example: ifliftwall --settings widescreen 1280 800 date  
	    exit
	fi
	;;
    *)
	shift
	;;
  esac
done;

# Read config file
# ------------------------------------------------------------------------
if [ -f $CONFILE ]
then
    . $CONFILE 
else
    echo No config file ~/.ifliftwall found
    echo Please enter your screen settings: aspect width height sort
    echo Example: ifliftwall --settings widescreen 1280 800 random 
    exit
fi

# Set link specifics
# ------------------------------------------------------------------------
SITE=interfacelift.com
PAGE=$SITE"/wallpaper_beta/downloads/"$SORT"/"$ASPECT"/"$RESWTH"x"$RESHGT"/"
echo $PAGE

# Get current wallpaper
# ------------------------------------------------------------------------
CURRPIC=`dcop $MYSELF kdesktop KBackgroundIface currentWallpaper 0`
TMPFILE=$TMPDIR$TMPTPL$WDN

echo $CURRPIC 
echo $TMPFILE

if [ "$CURRPIC" != "$TMPFILE" ] || [ $FORCE -eq 1 ];  
then

# Check if interfacelift.com is reachable
# ------------------------------------------------------------------------
    if ping -c 1 -q -W 2 -w 2 $SITE >/dev/null 
    then 
	
        # extract picture of the day url
	POTD=`wget -qO - $PAGE | grep "href=\"/dl/wallpaper" | \
	    gawk -F'<a href=\"/dl/wallpaper/' -v RS='"><img' 'RT{print $NF}' | \
	    awk 'NR=="'"$PDN"'" {print}' | sed 's/^\([0-9]\{3\}_\)/0\1/'`
#	echo $POTD
	
# Extract picture url
# ------------------------------------------------------------------------
	PICURL=$SITE"/wallpaper/downloads/0"$POTD

        if [ -n "$PICURL" ]
	then
	    echo $PICURL

# get picture
	    wget -q -O  $TMPFILE $PICURL

# set picture as desktop background 
# ------------------------------------------------------------------------
	    dcop $MYSELF kdesktop KBackgroundIface setWallpaper $TMPFILE 8  
            # 8=Scale and crop
	    exit 
	fi
    else 
	echo $SITE is unreachable, no new wallpaper set.
    fi
else
    echo wallpaper already set to current, exiting.
fi