#!/bin/bash

# doc print_future_path {
#
# DESCRIPTION
#   Prints relative output path based on provided metadata TAGS. Expects input from print_meta
#   function.
#
# USAGE
#   print_future_path <output from print_meta>
#
# }

print_future_path() {
    local TAGS="${@}"
    local tagList=(GENRE COMPOSER ALBUM ARTIST CONDUCTOR PERFORMER DATE DISCNUMBER TOTALDISCS TRACKNUMBER TITLE)

    for tag in ${tagList[@]}; do
        CURTAG="$(awk -v field=${tag} 'BEGIN{RS=";";FS="="}{if($1==field){printf $2}}' <<< ${TAGS})"
        eval local ${tag}='${CURTAG}'
    done

    [[ -n "${GENRE}" ]] && echo -n "${GENRE}/"
    if [[ -n "${CONDUCTOR}" ]]; then 
        [[ -n "${ARTIST}" ]] && echo -n "${ARTIST}/"
        [[ -n "${ALBUM}" ]] && echo -n "${ALBUM}/"
        [[ -n "${CONDUCTOR}" ]] && echo -n "${CONDUCTOR}/"
        [[ -n "${DATE}" ]] && echo -n "${DATE}"
        if [[ -n "${DATE}" ]] && [[ -n "${PERFORMER}" ]]; then echo -n " - "; fi
        [[ -n "${PERFORMER+x}" ]] && echo -n "${PERFORMER}/"
    else
        [[ -n "${ARTIST}" ]] && echo -n "${ARTIST}/"
        [[ -n "${DATE}" ]] && echo -n "${DATE}"
        if [[ -n "${DATE}" ]] && [[ -n "${ALBUM}" ]]; then echo -n " - "; fi
        [[ -n "${ALBUM}" ]] && echo -n "${ALBUM}/"
    fi
    
    [[ ${TOTALDISCS} -gt 1 ]] && echo -n "${DISCNUMBER}."
    printf "%02d" ${TRACKNUMBER}
    [[ -n "${TITLE}" ]] && echo -n " - $(sed 's|/|_|g' <<< ${TITLE})" || echo -n " - Track $(printf "%02d" ${TRACKNUMBER})"
    echo -n ".flac"
}