#!/bin/bash
#
title=$(echo "$1" | sed -e 's/.*- //')
num=$(echo "$1" | sed -e 's/.*- \(.*\) -.*/\1/')
path="/d/hd0/Hoerbuecher/podcasts/tkkg"

url=$2
#curl=$(curl "$url" | grep '<tbody><tr><td colspan="4" data-behavior="toggle-collapse">C' | sed  's/\([0-9][0-9]:[0-9][0-9]:[0-9][0-9]\)/\1\n/g' | sed -e "s/.*$num/$num/g" | sed -e "s/\($num.*\)<\/td><td>\(.*\)$/\1<del>\2<nl>/g" -e  's/ /<space>/g' | grep "$num")
curl=$(curl "$url" | grep '<tbody><tr><td colspan="4" data-behavior="toggle-collapse">C' | sed  's/\([0-9][0-9]:[0-9][0-9]:[0-9][0-9]\)/\1\n/g' | grep -v table |sed -e 's/.*span><\/td//g' -e 's/.*<\/tr><tr><td>//g' -e 's/<\/td><td>/ /g' -e 's/\(.*\) \([^ ]*\)/\1<del>\2<nl>/g' -e 's/ /<space>/g')
echo $curl

metadata()
{
        chs=0;
        ni=0;
        echo \;FFMETADATA1 > metadata.txt ;
        echo "title=$title" >> metadata.txt ;
        if [ -z "$url" ]; then
                for i in ./*.mp3; 
                        do echo CHAPTER0$ni=$(date -u -d @$(($chs/1000)) +%H:%M:%S).00; 
                        echo CHAPTER0${ni}NAME=$(echo $i | sed -e 's/^\.\/\(.*\).mp3$/\1/'); 
                        chs=$(( $chs + $(date -u -d"$(ffmpeg -i "$i" 2>&1 | grep Duration | sed -e 's/.*ion: \(.*\), s.*/\1/')" +%s%N) / 1000000   ));
                        ni=$(($ni+1)) ;
                done >> metadata.txt
        else
                for i in $(echo $curl | sed -e 's/<nl>/\n/g') ; do 
                        echo CHAPTER0$ni=$(date -u -d @$(($chs/1000)) +%H:%M:%S).00; 
                        echo CHAPTER0${ni}NAME=$(echo $i | sed -e 's/<del>.*//' -e 's/<space>/ /g'); 
                        chs=$(( $chs + $(date -u -d"$(echo $i | sed -e 's/.*<del>//')" +%s%N) / 1000000   ));   
                        ni=$(($ni+1)) ; 
                done >> metadata.txt
        fi
}

chaptersxml()
{
        chs=0;
        echo "<item>" >> chapter.xml
        echo "<title>$num - $title</title>" >>  chapter.xml
        echo "<description>Episode: $num - $title</description>" >> chapter.xml
        echo "<itunes:summary>Episode: $num - $title</itunes:summary>" >> chapter.xml
        echo "<itunes:subtitle>Episode $num</itunes:subtitle>" >> chapter.xml
        echo "<itunesu:category itunesu:code=\"112\"/>" >> chapter.xml
        echo "<enclosure url=\"https://podcast.eris.cc/tkkg/$num.opus\" type=\"audio/ogg\" length=\"1\"/>" >> chapter.xml
        echo "<guid>https://podcast.eris.cc/tkkg/$num.opus</guid>" >> chapter.xml
        echo '<psc:chapters xmlns:psc="http://podlove.org/simple-chapters" version="1.2">' >> chapter.xml

        if [ -z "$url" ]; then
                for i in ./*.mp3; do 
                        echo "<psc:chapter start=\"$(date -u -d @$(($chs/1000)) +%H:%M:%S).000\" title=\"$(echo $i | sed -e 's/^\.\/\(.*\).mp3$/\1/')\"/>"; 
                        chs=$(( $chs + $(date -u -d"$(ffmpeg -i "$i" 2>&1 | grep Duration | sed -e 's/.*ion: \(.*\), s.*/\1/')" +%s%N) / 1000000   ));   
                        ni=$(($ni+1)) ; 
                done >> chapter.xml
        else
                for i in $(echo $curl | sed -e 's/<nl>/\n/g'); do 
                        echo "<psc:chapter start=\"$(date -u -d @$(($chs/1000)) +%H:%M:%S).000\" title=\"$(echo $i | sed -e 's/<del>.*//' -e 's/<space>/ /g')\"/>"; 
                        chs=$(( $chs + $(date -u -d"$(echo $i | sed -e 's/.*<del>//')" +%s%N) / 1000000   ));   
                        ni=$(($ni+1)) ; 
                done >> chapter.xml
        fi
        echo '</psc:chapters>' >> chapter.xml
        echo "<itunes:duration>$(date -u -d @$(($chs/1000)) +%H:%M:%S)</itunes:duration>" >> chapter.xml
        echo "<pubDate>$(date +"%a, %d %B %Y %H:%M:%S %Z")</pubDate>" >> chapter.xml
        echo "</item>" >> chapter.xml
}

cd "$1"
metadata
chaptersxml
for f in ./*.mp3; do 
        echo "file '$(echo "$f" | sed "s/'/'\\\''/g" )'" >> mylist.txt ;
done
ffmpeg -f concat -safe 0 -i mylist.txt -i metadata.txt -map_metadata 1 -codec libopus -vbr on -b:a 128000 "$path/$num.opus"
#rm metadata.txt mylist.txt
cd ..