#!/bin/tcsh 

###########################################################
# audmunge - shell script to convert a directory of compressed audio
# v1.1 plutek 2008-02-25
###########################################################

# N.B. needs tcsh for "foreach" command

# set destination directory root

set dest_dir = /mnt/usb/plutek/lau-cb-work/temp/munged

# check that we really want to operate from pwd
echo "####################################################"
echo "destination root for processed files is: $dest_dir"
echo ""
echo "here is what will be operated on:"
echo ""
pwd
echo ""
ls
echo ""
echo -n "is it ok to operate from that directory? (only y continues) "
set ans = $<
if ( $ans == "y" ) then
    # copy everything to the working directory, so we don't mess up the mirror
    echo "####################################################"
    echo "copying from"
    pwd
    echo "to $dest_dir"
    echo "####################################################"
    cp * $dest_dir
    cd $dest_dir
    echo "contents of $dest_dir :" 
    ls
    # change any ":" to "_"
    echo "####################################################"
    echo "changing all ':' to '_'"
    echo "####################################################"
    rename : _ *
    echo "contents of $dest_dir :"
    ls
    # de-compress it all
    echo "####################################################"
    echo "decompressing"
    echo "####################################################"
    # de-ogg
    foreach file ( * )
	if ( $file =~ *ogg ) then
	    oggdec $file
    # de-wv (over-writes oggs which are also wvs, if filenames were consistent)
    # -y parameter means say "yes" to all over-write prompts
	    else if ( $file =~ *wv ) then
		wvunpack -y $file
	endif
    end	
    # make a mono version of all wav files
    echo "#######################################################"
    echo "sorting files by mono/stereo/other and processing..."
    echo "#######################################################"
    foreach file ( *wav )
	set audiotype = "`file $file`"
	echo "$audiotype"
	if ( "$audiotype" =~ *mono* ) then
		mv $file $dest_dir/mono/$file.mono.wav
		else if ( "$audiotype" =~ *stereo* ) then
		sox -c 2 $file -c 1 $dest_dir/stereo/$file.mono.wav && mv $file $dest_dir/stereo/
                else
		mv $file $dest_dir/unknown/
	endif    
    end
    echo "####################################################"
    echo "cleaning up"
    # remove all unused files
    rm $dest_dir/*
    # print a help message
    echo ""
    echo "################################################################################"
    echo "#      please check $dest_dir/stereo"
    echo "#      and $dest_dir/unknown ----"
    echo "#"
    echo "#      which stereo ones need the mono version?"
    echo "#      what do we do with the unknown ones?"                   
    echo "################################################################################"
    echo ""
    ls -Rl && ls -Rl > $dest_dir/filelist.txt
    exit 0
else
    echo "#####################################################################"
    echo "please cd to the proper directory of source files, and restart..."
    echo "#####################################################################"
endif
    exit 127
fi