Download shows from OE1 Radio

## orfradiodl.sh
#!/bin/sh

# Downloads shows from OE1
#
# Usage:
# ./orfradiodl.sh http://oe1.orf.at/programm/20180228/504777
#
# URL: https://gist.github.com/decke/672e63bee5001fe520aaf73502f095ae

DATE=`echo $1 | cut -d'/' -f5`
ID=`echo $1 | cut -d'/' -f6`
CHANNEL=`echo $1 | cut -d'/' -f3 | cut -d'.' -f1`

JSONURL="https://audioapi.orf.at/${CHANNEL}/api/json/current/broadcast/${ID}/${DATE}"
USERAGENT="Mozilla/5.0 (X11; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0"

function jsonValue() {
  KEY=$1
  num=$2
  awk -F"[,:}]" '{for(i=1;i<=NF;i++){if($i~/'$KEY'\042/){print $(i+1)}}}' | tr -d '"' | sed -n ${num}p
}

LOOPSTREAMID=`curl -s -X GET ${JSONURL} | jsonValue loopStreamId 1`
TITLE=`curl -s -X GET ${JSONURL} | jsonValue title 1 | sed 's/[^a-zA-Z 0-9-]//g'`
PROGRAMTITLE=`curl -s -X GET ${JSONURL} | jsonValue programTitle 1 | sed 's/[^a-zA-Z 0-9-]//g'`

DOWNLOADURL="http://loopstream01.apa.at/?channel=${CHANNEL}&id=${LOOPSTREAMID}"

printf "CHANNEL:\t%s\nTITLE:\t%s\nPROGRAM:\t%s\nURL:\t%s\nJSON:\t%s\n" \
  "${CHANNEL}" "${TITLE}" "${PROGRAMTITLE}" "${DOWNLOADURL}" "${JSONURL}"

curl -A "${USERAGENT}" -o "${CHANNEL} ${PROGRAMTITLE} ${TITLE}.mp3" "${DOWNLOADURL}"