#!/bin/bash
TMP="/tmp/danish-lessons"
mkdir -p "${TMP}"
cd "${TMP}"
URL_BASE="http://theprint.vox.com/library/post"
AUDIO_BASE="http://theprint.vox.com/library/audio"
LIMIT=2
POST=1
while [ $POST -le $(($LIMIT+1)) ]
	do
		F="danish-lesson-${POST}.html"
		wget "${URL_BASE}/${F}" 1> /dev/null 2> /dev/null      
		for line in $(cat ${F})
			do
				if [[ $line =~ "[a-z0-9]{34}\.html" ]]
					then
						AUDIO=${BASH_REMATCH}
						wget "${AUDIO_BASE}/${AUDIO}" 1> /dev/null 2> /dev/null
						for line in $(cat ${AUDIO} | egrep "<param name=\"flashvars\"")
							do
								if [[ $line =~ "http:\/\/a[0-9]\.vox\.com\/[a-z0-9]{34}-mp3" ]]
									then
										FILE=${BASH_REMATCH}
										LOCAL_FILE="$(basename "${FILE}")"
										if [ ! -f "${LOCAL_FILE}" ]
											then
												wget "${FILE}" 1> /dev/null 2> /dev/null
												mv "${LOCAL_FILE}" "danish-lesson-${POST}.mp3"
										fi
								fi
							done
				fi
			done
		POST=$(($POST+1))
	done
rm *.html*