#!/bin/bash

. /usr/global/lib/music.bash





# System Constants
#-----------------------------------------------------------------------------------------------------------------------------------

ANF_VERSION="$Name: album_name_fix-1_0_0-1 $"





# Print Version
#-----------------------------------------------------------------------------------------------------------------------------------

function version_print()
{
    echo ${ANF_VERSION} | sed -e 's/.*: //' -e 's/-/ /' -e 's/_/\./g' -e 's/\$$//'
}





# Prin Help
#-----------------------------------------------------------------------------------------------------------------------------------

function help_print()
{
    echo "album_name_fix [-h | --help] | [-V | --version] | [-T | --test] [-v | --verbose] [-a <album_dir>] [-p|--music_pattern <music_pattern>] [-s|--sed_substitute_pattern <sed_substitue_pattern>]"
}





# Arg Parse
#-----------------------------------------------------------------------------------------------------------------------------------

function args_parse()
{
             mode="default"
	  verbose="false"
        album_dir="."
    music_pattern="."

    tmp_args=$(getopt -o a:p:s:ThVv --long album_dir:,music_pattern:,sed_substitute_pattern:,test,help,version,verbose -n 'album_name_fix' -- "$@")

    if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi

    # Note the quotes around `$TEMP': they are essential!
    eval set -- "${tmp_args}"

    while true ; do
	case "$1" in
	    # Path options
            -a|--album_dir)                   shift;       album_dir="$1";                    shift;;

	    # Options
            -p|--music_pattern)               shift;  music_pattern="$1";                     shift;;
            -s|--sed_substitute_pattern)      shift;             ssp="$1";                    shift;;

	    # Mode switches
            -T|--test)                                         mode="test";                   shift;;
	    -h|--help)                                         mode="exit";    help_print;    shift;;
	    -V|--version)                                      mode="exit";    version_print; shift;;

	    # Global options
            -v|--verbose)                                   verbose="true";                   shift;;

	    #   
	    --)                                                                              shift;  break;;
	    *) echo "args_parse internal error [$1] !"; exit 1;;
	esac
    done
}





# Main
#-----------------------------------------------------------------------------------------------------------------------------------

shopt -s extglob

args_parse "$@"



if [[ ${mode} == "exit" ]]
then
    exit 0
else
    if [[ ${mode} == "test" ]]
    then
	dry_run=true
    else
	dry_run=false
    fi
fi



echo "mode: [${mode}]   verbose: [${verbose}]   album_dir: [${album_dir}]   music_pattern: [${music_pattern}]   sed_substitue_pattern: [${ssp}]" 1>&2

cd "${album_dir}"

IFS="\n"
find . -maxdepth 1 -name '*.flac' -o -name '*.FLAC' -o -name '*.ogg' -o -name '*.OGG' -o -name '*.mp3' -o -name '*.MP3' -o -name '*.m4a' -o -name '*.M4A' -o -name '*.ape' -o -name '*.APE' -o -name '*.wav' -o -name '*.WAV' -o -name '*.mp4' -o -name '*.MP4' -o -name '*.mkv' -o -name '*.MKV' | sed -e 's/^.\///' | grep -e "${music_pattern}" | sort |
    while read track_file
    do
        IFS=" "
        new_track_file="$(fix_file_name "${track_file}" "${ssp}")"

	if [[ "${new_track_file}" != "${track_file}" ]]
	then
	    echo "Moving '${track_file}' into '${new_track_file}'..."
	    if [[ "${dry_run}" != "true" ]]
	    then
		mv -- "${track_file}" "${new_track_file}"
	    else
		if [[ "${verbose}" == "true" ]]
		then
		    echo mv -- "${track_file}" "${new_track_file}"
		fi
	    fi
	else
	    echo "Skiping '${track_file}'..."
	fi

	IFS="\n"
    done