#!/bin/bash

# Includes
#-----------------------------------------------------------------------------------------------------------------------------------

. /usr/global/lib/music.bash





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

   AMS_NAME="album_metadata_save"
AMS_VERSION="$Name: album_metadata_save-1_0_0-1 $"





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

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





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

function help_print()
{
    echo "${AMS_NAME} [-h | --help] | [-V | --version] | [-T | --test] [-v | --verbose] [-f | --factoring] [-s | standardising] <source_dir> <metadata_file>"
}





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

function args_parse()
{
             mode="default"
          verbose="false"
        factoring="false"
    standardising="false"
       source_dir=""
    metadata_file=""

    tmp_args=$(getopt -o ThVvfs --long test,help,version,verbose,factoring,standardising -n "${AMS_NAME}" -- "$@")

    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
	    # Options

	    # 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;;
            -f|--factoring)                               factoring="true";                   shift;;
            -s|--standardising)                       standardising="true";                   shift;;

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

    if [[ "${mode}" != "exit" ]]
    then
	if [[ "${#}" != "2" ]]
	then
	    if [[ "${#}" -lt "2" ]]
	    then
		echo "Not enough args!"
	    else
		echo "Too many args!"
	    fi

	    mode="exit"
	    help_print
	else
	    source_dir="$1"
	    metadata_file="$2"
	fi
    fi
}





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

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}]   factoring: [${factoring}]   standardising: [${standardising}]   source_dir: [${source_dir}]   metadata_file: [${metadata_file}]" 1>&2

declare -g nb_track



find "${source_dir}" -maxdepth 1 -name '*.flac' -o -name '*.mp3' | sort | (

    tagtab_alloc

    while read track_file
    do
        nb_track=$((${nb_track} + 1))

	if [[ "${factoring}" == "true" ]]
        then
	    tagtab_read "${nb_track}" "${track_file}" "FACTORING"
	else
	    tagtab_read "${nb_track}" "${track_file}" "NOFACTORING"
	fi
    done

    track_id=0

    while [[ "${track_id}" -le "${nb_track}" ]]
    do
        if [[ "${track_id}" == 0 ]]
	then
	    echo "DEF"
	else
	    echo "SOT"
	fi

	if [[ "${standardising}" == "true" ]]
        then
	    tagtab_dump "${track_id}" "STANDARD"
	else
	    tagtab_dump "${track_id}" "PASSTHROUGH"
	fi

	echo "EOT"

        track_id=$((${track_id} + 1))
    done
    
    echo "EOA"

    echo 1>&2 "NB Track dumped: [${nb_track}]"
#)
#) >"${metadata_file}"
) | (
    if [[ "${dry_run}" == "true" ]]
    then
	cat
    else
	tee "${metadata_file}"
    fi
) | (
    if [[ "${verbose}" == "true" ]]
    then
	cat
    else
	cat >/dev/null
    fi
)