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#!/bin/bash
# This script downloads National Geographic Photo of the Day
# Permission to copy, modify, and distribute is granted under GPLv3
# Last revised 23 Dec, 2018

# change directory to where the script resides.
BASEDIR=$(dirname $0)
cd $BASEDIR
#######################

echo "start connection..."

# get data
data=$(curl -s https://www.nationalgeographic.com/photography/photo-of-the-day/)
if [ -n "$data" ]
then
  # get img url
  imgurl=$(grep 'property="og:image"' <<< "$data")
  imgurl="$(cut -d"\"" -f4 <<< $imgurl)"

  # get image name from canonical link and date
  name=$(grep 'rel="canonical"' <<< "$data")
  name="$(cut -d"\"" -f4 <<< $name)"
  name="$(cut -d"/" -f8 <<< $name)"

  date=$(grep 'meta property="gsa_publish_date"' <<< "$data")
  date="$(cut -d"\"" -f4 <<< $date)"

  file="$date-$name.jpg"

  if [ -f "$file" ]
  then
    echo "file already exists"
  else
    echo "start downloading the image..."
    curl "$imgurl" > $file
    echo "image downloaded successfully and saved as $file"
  fi

else
  echo "connection failed"
fi

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#!/bin/bash

# change directory to where the script resides.
BASEDIR=$(dirname $0)
cd $BASEDIR

bing="http://www.bing.com"

# the idx parameter determines where to start from. 0 is the current day,
xmlURL="http://www.bing.com/HPImageArchive.aspx?format=xml&idx=0&n=1&mkt=en-WW"

# Valid options: "_1024x768" "_1280x720" "_1366x768" "_1920x1200" "_1920x1080"
picRes="_1920x1080"

# The file extension for the Bing pic
picExt=".jpg"

# the XML data retrieved from xmlURL, form the fully qualified
# URL for the pic of the day, and store it in $picURL
data=$(curl -s $xmlURL)

if [ -n "$data" ]
then
  picURL=$(cut -d '>' -f13 <<< "$data")
  picURL=$(cut -d '<' -f 1 <<< "$picURL")
  picURL=$bing$picURL$picRes$picExt

  date=$(cut -d '>' -f5 <<< "$data")
  date=$(cut -d '<' -f1 <<< "$date")

  name=$(cut -d '>' -f15 <<< "$data")
  name=$(cut -d '<' -f 1 <<< "$name")
  name=$(cut -d ',' -f 1 <<< "$name")

  file="$date - $name$picExt"

  if [ -f "$file" ]
  then
    echo "file already downloaded"
  else
    curl "$picURL" > "$file"
    echo "image saved as $file"
  fi

else
  echo "connection failed"
fi

exit