#!/bin/bash
MUSICPATH=$1
TEMPATH=$(mktemp)
TEMPATH2=$(mktemp)
URLPLAYED="/etc/bellScheduler/list_url_played"
FILEPLAYED="/etc/bellScheduler/list_file_played"
MULTI=2

if [ -d "$MUSICPATH" ];then
	TYPE="directory"
	if [ ! -f $FILEPLAYED ];then
		touch $FILEPLAYED
	fi
elif [ -f "$MUSICPATH" ];then
	TYPE="list"
	if [ ! -f $URLPLAYED ];then
		touch $URLPLAYED
	fi
fi

	

case $TYPE in

	directory)	
		#statements	
		num_files=0
		find "$MUSICPATH" -type f > $TEMPATH
		while read musicfile ;  do
			mimetype=$(file -i "$musicfile" | awk -F ':' '{ if ( $2 ~ /audio/ || $2 ~ /video/ ) print "audio" ; else if ($2 ~ /octet-stream/ ) print "check" }')
			if [ "$mimetype" = "audio" ]; then
				let num_files=num_files+1
				echo "$musicfile" >> $TEMPATH2
			elif [ "$mimetype" = "check" ]; then
				mimetype=$(mimetype "$musicfile" | awk -F ':' '{if ( $2 ~ /audio/ || $2 ~ /video/) print "audio"}')
				if [ $mimetype = "audio" ]; then
					let num_files=num_files+1
					echo "$musicfile" >> $TEMPATH2
				fi
			fi
			
		done < $TEMPATH
		if [ -f $FILEPLAYED ];then
			lines_fileplayed="$(wc -l $FILEPLAYED)"
			lines_fileplayed=($lines_fileplayed%%: *)
			full_list=0

			if [ $lines_fileplayed -ge $num_files ]; then
				let full_list=full_list+1

			fi
			if [ $full_list -eq 1 ];then
					rm -f $FILEPLAYED
					touch $FILEPLAYED
			fi
		else
			touch $FILEPLAYED
		fi
	
		match=0
		cont=0
		time_out=$(expr $num_files '*' $MULTI)
		while [ $match -eq 0 ];do
			file_select="$(echo "$(cat $TEMPATH2 | shuf -n 1)")"
			if [ $cont -lt $time_out ];then
					tmpFile="$(basename "$file_select")"
					check="$(egrep -i "$tmpFile" $FILEPLAYED)"
					if [ -z "$check" ];then
						let match=match+1	
						echo  "$(basename "$file_select")" >> $FILEPLAYED
					fi
			else
				break
			fi	
			let cont=cont+1		
		done
		#echo $(cat $TEMPATH2 | shuf -n 1)
		echo "$file_select"
		rm $TEMPATH $TEMPATH2
	;;

	list)	
		if [ -f $MUSICPATH ];then
			lines_musicpath=$(wc -l $MUSICPATH)
			lines_musicpath=($lines_musicpath%%: *)
			lines_urlplayed=$(wc -l $URLPLAYED)
			lines_urlplayed=($lines_urlplayed%%: *)

			full_list=0
			if [ $lines_urlplayed -ge $lines_musicpath ]; then
				 let full_list=full_list+1
			fi		 
			if [ $full_list -eq 1 ];then
				rm -f $URLPLAYED
				touch $URLPLAYED
			fi		 
			match=0
			cont=0
			time_out=$(expr $lines_musicpath '*' $MULTI)
			while [ $match -eq 0 ];do
				url_select=$(echo $(grep . $MUSICPATH | shuf -n 1 ) | sed -e 's,%,\%,g')
				if [ $cont -lt $time_out ];then
					check=$(grep -Fxq "$url_select" $URLPLAYED)
					if [ -z $check ];then
						let match=match+1	
						echo $url_select >> $URLPLAYED
					fi
				else
					break
				fi	
				let cont=cont+1		
			done	
			#echo $(grep . $MUSICPATH | shuf -n 1 )	| sed -e 's,%,\%,g'
			echo $url_select
				
		fi
	;;

	*)

	;;	
	
esac