#!/bin/bash
if [ -z "$1" ] || [ -z "$2" ]
then
echo "Enter an input directory followed by an output directory!"
exit 1
else
echo "Copying Directories..."
fi

find "$1" -mindepth 1 -type d -print0| while read -d '' -r dir; 
do
d1=${dir#"$1"}
mkdir -v "$2$d1"
done

#Remove potential charset conflicts
find "$1" -mindepth 2 -name '*_.flac' -o -name '*_.m4a' -o -name '*_.wav' -o -name '*_.mp4' -o -name '*_.mp3' | while read -r track;
do
  ext="${track##*.}"
  new="${track%%_*}.${ext}"
  mv "${track}" "${new}"
done

#Link to all pictures, lyric files, etcetera.
echo "Creating Links for non-audio files..."
find "$1" -iname '*.png' -o -iname '*.jpg' -o -iname '*html' -o -iname '*.lrc' -o -iname '*.txt' -o -iname '*.cue' -o -iname '*.exe' -o -iname '*.mpg'  -o -iname '*.bmp' -o -iname '*.ico' | while read -r file;
do
ln -P "$file" "$2${file#"$1"}"
done

echo "Copying pre-existing mp3s and unlinkable files..."
find "$1" -iname '*.mp3' -o -iname '*.log' -o -iname '*.m3u' -o -iname '*.m3u8' -o -iname '*.accurip' -o -iname '*pdf' -o -iname '*.rtf'| while read -r file;
do
cp "$file" "$2${file#"$1"}"
done

find "$1" -iname 'desktop.ini' -o -iname 'Thumbs.db' -o -iname '*nfo'| while read -r file;
do
rm "$file"
done

echo "Converting audio... Please be Patient!"
find "$1" -type f -name '*.flac' -printf '%h\n' | sort -u | while read -r dir
 do	
	if [ $(( $(find "$dir"/*.flac | wc -l) )) -gt $(( $(find "$2${dir#"$1"}"/*.mp3 | wc -l) )) ]
	then
	track2track -t mp3 -q extreme -j 20 -d "$2${dir#"$1"}" "$dir"/*.flac
	#ffmpeg -i "$track" -vn -n -loglevel panic -threads 20 -map 0:a "${path%.*}".mp3
	else
	echo "$2${dir#"$1"} Contains an equal number of mp3s..."
	fi
 done
 
 find "$1" -type f -name '*.m4a' -printf '%h\n' | sort -u | while read -r dir
 do	
	if [ $(( $(find "$dir"/*.m4a | wc -l) )) -gt $(( $(find "$2${dir#"$1"}"/*.mp3 | wc -l) )) ]
	then
	track2track -t mp3 -q extreme -j 20 -d "$2${dir#"$1"}" "$dir"/*.m4a
	else
	echo "$2${dir#"$1"} Contains an equal number of mp3s..."
	fi
 done
 
  find "$1" -type f -name '*.mp4' -printf '%h\n' | sort -u | while read -r dir
 do	
	if [ $(( $(find "$dir"/*.mp4 | wc -l) )) -gt $(( $(find "$2${dir#"$1"}"/*.mp3 | wc -l) )) ]
	then
	track2track -t mp3 -q extreme -j 20 -d "$2${dir#"$1"}" "$dir"/*.mp4
	else
	echo "$2${dir#"$1"} Contains an equal number of mp3s..."
	fi
 done
 
 find "$1" -type f -name '*.wav' -printf '%h\n' | sort -u | while read -r dir
 do	
	if [ $(( $(find "$dir"/*.wav | wc -l) )) -gt $(( $(find "$2${dir#"$1"}"/*.mp3 | wc -l) )) ]
	then
	track2track -t mp3 -q extreme -j 20 -d "$2${dir#"$1"}" "$dir"/*.wav
	else
	echo "$2${dir#"$1"} Contains an equal number of mp3s..."
	fi
 done