#!/bin/bash

# Todo
# - see how reacts with permission denied
# - options for how to parse filenames
# - It'S, Ii, Iii

runDirs=false;	#d	rename directories
runFiles=false;	#f	rename files
verbose=false;	#v	spit out a bunch of info

convertm4a=false; #c	convert m4a to mp3
removem4a=false; # r	remove m4a file after conversion


pathArgs=0;
animCount=0;
dirCount=0;
convCount=0;
fileCount=0;
itemCount=0;

clear

function animate() {
	let animCount+=1;
	let itemCount+=1;
	echo -ne "\r";
	t=$(( $animCount/5 ));
	case $t in
		0 ) echo -ne "[#    ]"; ;;
		1 ) echo -ne "[ #   ]"; ;;
		2 ) echo -ne "[  #  ]"; ;;
		3 ) echo -ne "[   # ]"; ;;
		4 ) echo -ne "[    #]"; let animCount=0 ;;
	esac
	echo -ne "\t$itemCount Items Scanned ";

}

function convertm4a() {
	echo -e "\n\nConverting $1";
	tagList="`faad -i \"$1\" 2>&1|grep -e '^title:' -e '^artist:' -e '^album:' -e '^genre:' -e '^track:' -e '^totaltracks:'`";
	for tag in title artist album genre track totaltracks; do
		export $tag="`echo "$tagList" | grep -e "^$tag:" | cut '-d:' -f2 | cut '-b2-'`"
	done 

	if [ `lame --genre-list|grep "$genre"|cut '-b1'` ]; then
		tg="--tg \"$genre\"";
	else
		tg="";
	fi 

	newMp3Name="${1%.m4a}.mp3";
	faad -o - "$1" | lame --tt "$title" --ta "$artist" --tn "$track/$totaltracks" --tl "$album" $tg - "$newMp3Name"

	if test -s "$newMp3Name"; then
		echo "Appears to be a success!";
		if [ $removem4a == "true" ]; then
			echo "Deleting Old File";
			rm -f "$1"
		fi
		chmod 777 "$newMp3Name"
		let convCount+=1;
	fi
	echo;
}

function runDir()
{
	if !(test -d "$1"); then return; fi

	cd "$1"
	
	for i in *
	do
		if [ $verbose == "false" ]; then animate; fi
		newName="`echo "$i" | sed 's/_/\ /g' | sed 's/  /\ /g' | perl -p -e 's/(\\w+)/\\u\\L$1/g;' | sed 's/Mp3/mp3/g'`";
		if test -d "$i"; then
			if [ $verbose == "true" ]; then echo -e "\nDirectory: $i"; fi
			if [ $runDirs == "true" ]; then 
				if [ "$i" != "$newName" ]; then
					if [ $verbose == "true" ]; then echo "Renaming To: $newName"; fi
					mv "$i" "$newName";
					let dirCount+=1;
				fi
				runDir "$newName";
			else
				runDir "$i";
			fi
			cd ..
		elif test -f "$i"; then
	
			if [ $verbose == "true" ]; then 
				if [ $runFiles == "true" -o $runDirs == "false" ]; then 
					echo "   File: $i";
				fi
			fi
			if [ $runFiles == "true" ] ; then
				if [ "$i" != "$newName" ]; then 
					if [ $verbose == "true" ]; then echo "   Renaming To: $newName"; fi
					mv "$i" "$newName";
					let fileCount+=1;
					i=$newName;
				fi
			fi
			if [ $convertm4a == "true" ]; then
				if [[ `echo "$i" | grep '.m4a'` ]]; then
					convertm4a "$i"
				fi
			fi
		fi
	done
}


for i in $*; do
	if [ `echo "$i" | grep '-'` ]; then 
		if [ `echo "$i" | grep -G "[(--help)(h)]"` ]; then 
			echo -e "SKwizard 1.0 - 2008\n---------------------\nClean up your music file collection and more!\nhttp://www.scottklarr.com\n---------------------\n";
			echo -e "Usage: skwizard [-dfcr] [/target/path/]";

			echo -e "\nRename Files & Directories";
			echo -e "\t-d\t\tProcess Directories";
			echo -e "\t-f\t\tProcess Files";
#			echo -e "\t-v\t\tVerbose - when used alone will do a non-destructive scan";

			echo -e "\nM4A to MP3 Conversions";
			echo -e "\t-c\t\tConvert all M4A files to MP3";
			echo -e "\t-r\t\tRemove M4A files after successful conversion";

			echo;
			exit 0;
		fi
		if [ `echo "$i" | grep 'v'` ]; then verbose=true; fi
		if [ `echo "$i" | grep 'f'` ]; then runFiles=true; fi
		if [ `echo "$i" | grep 'd'` ]; then runDirs=true; fi
		if [ `echo "$i" | grep 'c'` ]; then convertm4a=true; fi
		if [ `echo "$i" | grep 'r'` ]; then removem4a=true; fi
	else
		if test -d "$i"; then
			echo "Im about to crawl: $i"
			let pathArgs+=1;
			runDir $i;
		else
			echo "$i is not a valid starting point!";
			exit 1;
		fi
	fi
done;

if [ $runDirs == "false" -a $runFiles == "false" -a $verbose == "false" -a $convertm4a == "false" ]; then
	echo -e "What do you want me to do?!\nTry running: skwizard --help";
	exit 1;
fi

if [ $pathArgs == 0 ]; then
	echo "Im about to crawl: `pwd`";
	runDir ".";
fi

echo -e " \n$dirCount Directories Renamed\n$fileCount Files Renamed\n$convCount Files Converted\n\n------------------------\nThanks for using SKwizard!\nYou can contact me at scott@scottklarr.com\n------------------------\n";
exit 0;