#!/bin/bash
date='date +%Y-%m-%d\ %T'
logfile=~/.wkgen.log
prepath="${XDG_PICTURES_DIR:=$HOME/Pictures}"
mkdir -p "$prepath/wallpaper"
filelocation="$prepath/wallpaper/wk-progress.1.png"
set -e
oldhash="$(sha256sum $filelocation || echo none)"
echo "[$(eval $date)]: starting webrequests..." | tee -a $logfile
curl -s -o $filelocation -A "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36" -o "wallpaper.png" "http://wkw.natural20design.com/?k=7b98a684-5c91-44ab-86b1-f7023609fe4e&d=1"
newhash="$(sha256sum $filelocation)"
echo -e "\tnew:\t$newhash\n\told:\t$oldhash"
if [[ "$oldhash" = "$newhash" ]]; then
    echo "same files, nothing to do"
    exit
else
    echo "[$(eval $date)]: setting wallpaper..." | tee -a $logfile
    dbus-send --session --dest=org.kde.plasmashell --type=method_call \
    /PlasmaShell org.kde.PlasmaShell.evaluateScript 'string:
    var Desktops = desktops();
    for (i=0;i<Desktops.length;i++) {
            d = Desktops[i];
            d.wallpaperPlugin = "org.kde.image";
            d.currentConfigGroup = Array("Wallpaper", "org.kde.image", "General");
            d.writeConfig("Image", "file://'$filelocation'");
    }'
    echo "[$(eval $date)]: done" | tee -a $logfile
fi