#!/bin/bash

# Paste a file here that contains the HTML code to be placed _before_ the MP3 tag list.
DIRLISTHEAD="/etc/mp3dir2html/head.php"

# Regular expression that is to be excluded in the final listing
DIRLISTEX='^Susperia|^B.*hse.*nkelz'


# CORE SCRIPT FROM HERE. DON'T FIDDLE IF YOU DON'T KNOW WHAT YOU'RE DOING.

function m3l_help {
	echo "Usage: $(basename $0) [options]";echo
	echo "Options:"
	echo -e "\t-h\t\tPrint this help text and exit"
	echo -e "\t-d DIRECTORY\tSpecify a directory to be scanned"
}
while getopts "ht:r:p:v" params; do
	case $params in
		"h")
			m3l_help
			exit 0
		;;
		"d")
			SDIR="$OPTARG"
		;;
	esac
done

if [ "$SDIR" == "" ]; then
	SDIR="*"
fi

function m3l_rm_verb {
	#As -q nukes away too much, we have to omit that and remove status stuff here:
	grep -v 'directories scanned' | grep -v 'files read'
}

function m3l_prep_table {
	#Let's create a tab separated table with empty values where we have none but need at least an empty one.
	#	(Besides, this kind of rhymes.)
	# Additionally: ampersand handling
	sed 's/========.*/====/g' | sed 's/\t$/\t" "/g' | tr '\n' '\t' |\
	sed 's/====/\n====/g;s/====\t/====/g' |\
	sed 's/Artist\t//;s/Title\t//;s/Album\t//;s/\(.*\)Year\t/\1/;s/\(.*\)Track\t/\1/' |\
	uniq | sed 's/====//g;s/\ &\ /\ \&amp\;\ /g' | tr -s '\n' |\
	sed 's/\t0\t/\t"0"\t/g'
}

function m3l_fin_table {
	#Sort stuff, grep away lame artists and finally: put everything in order and remove the quotation marks
	#	from the entries again (leaving a whitespace char on an empty entry actually).
	sort -t \t -k 1,2 -k 2,3 -k 4,5 -k 3,4 |\
	grep -vE "$DIRLISTEX" |\
	awk -F '\t' '{print $1"\t"$2"\t"$3}' |\
	sed 's/" "/ /g;s/"0"/0/g'
}

exiftool -ext .mp3 -ext .MP3 -ext .wma -ext .WMA -ext .ogg -ext .OGG -lang en -Artist -Title -Album -Year -Track -t -r $SDIR |\
	m3l_rm_verb |\
	m3l_prep_table |\
	m3l_fin_table > content.csv

cat "$DIRLISTHEAD" > content.php
sed 's/^/<tr><td>/g;s/\t/<\/td><td>/g;s/$/<\/td><\/tr>/g' content.csv >> content.php
rm content.csv
echo -e '\n\n</table>\n</div>\n</div>\n</body>\n</html>' >> content.php

echo