#!/bin/bash

#cueape 0.1
#This script is intended to convert ape or flac + cue files to
#ogg vorbis or mp3 files, setting the tags to the correct value,
#obtained from the cue file.
#REQUIREMENTS:
#   -Oggenc installed (it comes with vorbis-tools) if you want to encode into Ogg Vorbis.
#   -lame installed if you want to encode into mp3
#   -mac to decode ape files (Monkey's Audio)
#   -flac to decode flac files.

#IF YOU FIND A BUG OR HAVE A SUGGESTION COMMENTO OR SIMPLY WANT TO CONTACT ME PLEASE MAIL ME TO
#rafadev_*@gmail.com  REMOVING THE "_*"
#This is done to prevent spamming

#Copyright (C) 2006  Rafael Ponieman - Buenos Aires, Argentina

#This program is free software; you can redistribute it and/or
#modify it under the terms of the GNU General Public License
#as published by the Free Software Foundation; either version 2
#of the License, or (at your option) any later version.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.


#scripted by deX


case "$1" in
*.[aA][pP][eE] | *[fF][lL][aA][cC]  )
    if [ ! -f "$1" ] ; then
        echo "Input file $1 doesn't exist"
        exit 1
    fi
    if [ ! -f "$2" ]; then
        echo "Cue input file $2 doesn't exist"
        exit 1
    fi ;;
*   )
    echo "Error: invalid input parameters"
    exit ;;
esac

#Testing parameters
if [ "$3" != "-m" ] && [ "$3" != "-o" ] ; then
    echo -en "Invalid parameters\n"
    echo -en ""
    echo -en "Usage: cueape [input ape file] [input cue file] [parameters]\nParameters can be: -m for mp3 encoding or -o for ogg encoding.\n"
    exit 1
fi

#Need help with this one, coudn't solve it. I need to know how to check if a
#program actually exists and is accesible
#Checking for mac
#[ -f $(which 'maca' >> /dev/null) ] ||  {
#   echo -en "You must have mac in your PATH.\nPlease install Monkey's Audio Codec\nYou can get it from http://sourceforge.net/projects/mac-port/\n"
#}


#Saving the position so as to return afterwards
olddir="$(pwd)"

#Going to target directory
cd "$(dirname "$1")"

#Checking for the output folder. If it's not there I create it
[ ! -d "Output" ] && mkdir -p "Output"
cp "$2" "Output/"

#Decompress
echo -en "\nCueape 0.1\n\n"
echo -en "Starting conversion\n"

#Checking filetype by extension and decompressing
tmp="$(basename "$1")"
tmp="${tmp##*.}"

case "$tmp" in
[fF][lL][aA][cC]    )
    echo -en "Decompressing FLAC file\n\n"
    echo -en ""
    tm="$(basename "$1")"
    tm="${tm%.[fF][lL][aA][cC]}"
    out="$(flac "-d" "$1" -o "Output/${tm}.wav" )"
    ;;
[aA][pP][eE]        )
    echo -en "Decompressing APE file\n\n"
    echo -en ""
    tm="$(basename "$1")"
    tm="${tm%.[aA][pP][eE]}"
    out="$(mac "$1" "Output/${tm}.wav" "-d")"
    ;;
*           )
    echo "Error: line 99"
esac

cd "Output"
echo -en "\nDecompression finished\n"
echo -en "Starting reencoding\n\n"
echo -en ""
if [ "$3" = "-o" ] ; then
    #Calling oggenc. Saving output for future checking
    out="$(oggenc -q 6 -o "$tm.ogg" "$tm.wav")"
    echo -en "\nReencoding finished\n"
    echo -en "Splitting\n\n"
    echo -en ""
    out="$(mp3splt -c "$(basename "$2")" -o "@n+-+@t" "$tm.ogg")"
else
    #Calling lame. Saving output for future checking
    out="$(lame --preset extreme "$tm.wav" "$tm.mp3")"
    echo -en "\nReencoding finished\n"
    echo -en "Splitting\n\n"
    echo -en ""
    #Using framemode becaus this settings are for VBR
    out="$(mp3splt -f -c "$(basename "$2")" -o "@n+-+@t" "$tm.mp3")"
fi
cd "$oldir"
echo -en "\nProcessing finished successfully\n"
echo -en ""
exit 0