#!/bin/bash
#
#
####################################################################################
# script che recupera il podcast dei singoli episodi da raiplaisound "link diretto del singolo ep." 
#
# V:1.5  alpha_debug_mode  23 Gennaio 2022                                                      
#
# dipendenze: curl,jq,cat,wget
#
# uso: raipodcast-dl [link pagina html episodio]
####################################################################################

# set global variable

surce=$1

grbase="https://www.raiplaysound.it"
ag="Mozilla/5.0 (Windows NT 10.0; WOW64; rv:40.0) Gecko/20100101 Firefox/56.0"


# remove old jason data
rm ./data/surce.json
#rm ./data/Lsurce.json


# get  jason data

jsurce=`echo $surce | sed -e 's/html/json/g'`
echo "jsurce: " $jsurce
echo " "
curl -A "$ag"  "$jsurce" -o data/surce.json
echo " "
echo " "
echo "get data api... done!"
echo " "

# function download data.
function DLnow { 
# download podcast
echo " download podcast.. rencode.."
echo " "
wget -d -c -U "$ag" "$Lpodcast" -O $dataT.mp3

}


# extract jason data of the last podcast

datat=`cat ./data/surce.json | jq -r '."downloadable_audio" | ."title"'`
dataT=`echo $datat | sed -e 's/\//\-/g' | sed -e 's/\ /\_/g'`
echo " "
echo "extract data... find.."
echo " "
echo " "
echo podcast_title: $dataT
echo " "



Lpodcast=`cat ./data/surce.json | jq -r '."downloadable_audio" | ."url"'`

echo " "
echo podcast_url: $Lpodcast
echo " "

DLnow

# encode audio data... small file


# ffmpeg -n -i $dataT.mp3 -vn -acodec libopus -ab 48k -ac 1 $dataT.ogg
ffmpeg -n -i $dataT.mp3 -vn -acodec libvorbis -aq 3 -ac 1 $dataT.ogg


rm $dataT.mp3


# ceck if json data is legacy.. workaround  fix for audio_book..legacy

if [ "$Lpodcast" = "null" ]; then

datat=`cat ./data/surce.json | jq -r '."audio" | ."title"'`
dataT=`echo $datat | sed -e 's/\//\-/g' | sed -e 's/\ /\_/g'`
echo " "
echo "extract data... find.."
echo " "
echo " "
echo podcast_title_Legacy: $dataT
echo " "
Lpodcast=`cat ./data/surce.json | jq -r '."audio" | ."url"'`
echo " "
echo podcast_url: $Lpodcast
echo " "
DLnow
fi