A rewrite of u/dewdude's AJW script

ajw_stewie410.sh

#!/usr/bin/env bash
#
# Generate the dialplan that interfaces with the player logic

cleanup() {
	if [[ -s "${stage}" ]]; then
		if [[ "${outfile}" == "-" ]]; then
			cat "${stage}"
		else
			mv --force "${stage}" "${outfile}"
			cat <<- EOF
				Done.
			
				Your jukebox is located at '${outfile}'
				Make sure to include it and the player config in your dial plan somewhere
			
			
				EOF
		fi
	fi
	rm --force "${stage}"
	unset stage outfile parent
}

show_help() {
	cat << EOF
Generate the dialplan that interfaces with the player logic

USAGE:  ${0##*/} [OPTIONS] (-i|--interactive)
        ${0##*/} [OPTIONS] NAME ROOTFOLDER INTROFILE GOODBYE LOOP
		
OPTIONS:
    -h, --help          Show this help message
    -V, --version       Display script version info
    -i, --interactive   Prompt user for required parameters
    -d, --delay INT     Delay (default: none)
    -v, --volume INT    Volume (default: -3)
    -o, --outfile PATH  Write configuration to PATH (default: "./YYYY-mm-ddTHH:MM:SS:zzzz-juke.conf")
                        If PATH is "-", write configuration to stdout
    -p, --parent PATH   Asterisk Sounds Directory parent path (default: "/var/lib/asterisk/sounds/en"
EOF
}

show_version() {
	cat <<- EOF
		|a|j|w| - asterisk jukebox wizard
		version 1.51  -   Jay Moore/NQ4T
		git.pickmy.org/dewdude/Asterisk_Jukebox
	EOF
}

init() {
	(
		cat <<- EOF
			[${1}-main]
			exten = s,1,Answer()
			same = n,Set(VOLUME(TX)=${6}
			same = n,Set(c=${1}-main)
			same = n(return),Set(m=1)
			same = n(loop),Background(${2}/${3})
		EOF
		(($# == 7)) && printf 'same = n,WaitExten(%s)\n' "${7}"
		cat <<- EOF
			same = n,Set(m=\$[\${m} + 1])
			same = n,GoToIf(\$["\${m}" > "${5}"]?loop)
			same = n(goodbye),Background(${2}/${4})
			same = n,Hangup()
			
			exten = i,1,Playback(option-is-invalid)
			same = n,GoTo(s,return)
		EOF
	) >> "${stage}"
}

# $path
loop() {	
	local folder idx
	idx="0"
	
	find "${*}" -mindepth 1 -maxdepth 1 -type d -printf '%f\n' | sort --numeric-sort | while read -r folder; do
		find "${*}/${folder}" -iname "*.ulaw" -printf '%f\n' | \
			awk --assign "folder=${*##*/}/${folder}" --assign "idx=${idx}" '
				function prefix() {
					if (ld == 0)
						return "#"
					return "*"
				}
				
				BEGIN {
					limit = 0
					ld = 0
				}
				
				{
					limit++
				}
				
				/^0/ {
					ld++
				}
				
				END {
					printf "\nexten = _%02dXX,1,Set(aa=%s)\n", idx, folder
					printf "same = n,GoToIf($[\"${EXTEN:-2}\" = \"00\"]?8track-player,%s%02d,1)\n", tc_prefix(), limit + 1
					print "same = n,GoToIf($[\"${EXTEN:-2}\" > \"" limit "\"]?i,1)"
					if (ld == 0)
						print "same = n,GoToIf($[\"${EXTEN:-2}\" < \"10\"]?cart-player,#${EXTEN:-1},1)"
					print "same = n,GoTo(cart-player,*${EXTEN:-2},1)"
				}
			' >> "${stage}"
		((idx++))
	done
}

showRequiredArgs() {
	cat << EOF
Current required parameters:
    - Name:             ${1}
    - Root Folder:      ${2}
    - Intro File:       ${3}
    - Goodbye:          ${4}
    - Loop:             ${5}
    - Volume:           ${6}
    - Delay:            ${7}
    - Outfile:          ${8}
EOF
}

interactive() {
	local -a iargs prompts defaults
	local answer i

	prompts[0]="Jukebox name/identifier"; defaults[0]=""
	prompts[1]="Jukebox albums root folder name"; defaults[1]=""
	prompts[2]="Menu/Intro file-name"; defaults[2]=""
	prompts[3]="Exit file-name"; defaults[3]=""
	prompts[4]="Play loop count"; defaults[4]="1"
	prompts[5]="Channel volume (default: ${volume})"; defaults[5]="${volume}"
	prompts[6]="Delay in seconds (default: ${delay:-0})"; defaults[6]="${delay:-0}"
	
	printf '%s\n' "+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+"
	show_version
	printf '%s\n' "+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+"

	read -ri "${parent}" -p "Jukebox root path (default: '${parent}'): " parent
	
	for ((i = 0; i < ${#prompts[@]}; i++)); do
		read -ri "${defaults[i]:--}" -p "${prompts[i]}: " answer
		if [[ "${answer}" == "-" ]]; then
			printf '%s\n' "'${prompts[i]% (*}' is required" >&2
			return 1
		fi
		iargs+=("${answer}")
	done
	
	showRequiredArgs "${iargs[@]}" "${outfile}"
	read -ri "n" -n 1 -p "Continue? (y/N): " answer
	[[ "${answer,,}" == "y" ]] || return 1
	init "${iargs[@]}"
	loop "${parent}/${iargs[1]}"
}

main() {
	local opts interact delay volume ans
	volume="-3"
	opts="$(getopt \
		--options hVid:v:o: \
		--longoptions help,version,interactive,delay:,volume:,outfile: \
		--name "${0##*/}" \
		-- "${@}" \
	)"
	
	eval set -- "${opts}"
	while true; do
		case "${1}" in
			-h | --help ) 			show_help; return 0;;
			-V | --version ) 		show_version; return 0;;
			-i | --interactive )	interact="1";;
			-d | --delay ) 			delay="${2}"; shift;;
			-v | --volume ) 		volume="${2}"; shift;;
			-o | --outfile ) 		outfile="${2}"; shift;;
			-p | --parent ) 		parent="${2}"; shift;;
			-- ) 					shift; break;;
			* ) 					break;;
		esac
		shift
	done
	
	if [[ -n "${interact}" ]]; then
		interactive || return 1
	elif (($# != 5)); then
		printf '%s\n' "Missing required parameters for non-interactive mode!" >&2
		show_help
		return 1
	else
		showRequiredArgs "${@}" "${volume}" "${delay}" "${outfile}"
		read -ri "n" -n 1 -p "Continue? (y/N): " ans
		[[ "${ans,,}" == "y" ]] || return 1
		init "${@}" "${volume}" "${delay}" > "${stage}"
		loop "${parent}/${2}"
	fi
	
	return 0
}

parent="/var/lib/asterisk/sounds/en"
stage="$(mktemp)"
outfile="$(realpath .)/$(date --iso-8061=sec)-juke.conf"
trap cleanup EXIT

main "${@}"