Screenshot Saturday 'Scrapper'

scrsat.sh

#!/bin/bash

SEARCH_URL='https://twitter.com/search?q=%23screenshotsaturday&src=savs&mode=photos'
CACHE_DIR=$HOME/.scrsat
CACHE_FILE=$CACHE_DIR/cache

mkdir -p $CACHE_DIR
touch $CACHE_FILE

function get_images()
{
	curl -s "$SEARCH_URL" | grep 'data-resolved-url-large="' | cut -d'"' -f2
}

function get_first_image()
{
	echo $1 | head -n 1
}

function download_image()
{
	local filename=$(echo $1 | cut -d"/" -f5 | cut -d":" -f1)
	wget -q -nc -O "$CACHE_DIR/$filename" "$1"
}

IMAGES=$(get_images)

CACHE_IMAGE=`< $CACHE_FILE`
FRESH_IMAGE=$(get_first_image $IMAGES)

if [ "$CACHE_IMAGE" = "$FRESH_IMAGE" ]; then
	exit
fi

for URL in $IMAGES; do
	download_image "$URL"
done

echo $FRESH_IMAGE > $CACHE_FILE