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#!/bin/sh /etc/rc.common
# Copyright (C) 2013-2014 OpenWrt.org

START=94
USE_PROCD=1

append_arg() {
	local cfg="$1"
	local var="$2"
	local opt="$3"
	local def="$4"
	local val

	config_get val "$cfg" "$var"
	[ -n "$val" -o -n "$def" ] && procd_append_param command $opt "${val:-$def}"
}

append_bool() {
	local cfg="$1"
	local var="$2"
	local opt="$3"
	local def="$4"
	local val

	config_get_bool val "$cfg" "$var" "$def"
	[ "$val" = 1 ] && procd_append_param command "$opt"
}

start_instance() {
	local cfg="$1"
	local ao dev

	procd_open_instance

	procd_set_param command /usr/bin/shairport

	append_arg "$cfg" bname "-a" "AirPort"
	append_arg "$cfg" log "-l"
	append_arg "$cfg" initbuf "-b" "256"
	append_arg "$cfg" port "-p" "5002"
	append_arg "$cfg" password "-k"
	append_arg "$cfg" mdns "-m"

	append_arg "$cfg" cmd_start "-B"
	append_arg "$cfg" cmd_stop "-E"
	append_bool "$cfg" cmd_wait "-w"

	append_arg "$cfg" audio_output "-o"

	config_get ao "$cfg" audio_output ""
	if [ "$ao" = "alsa" ]; then
		config_get dev "$cfg" output_dev ""
		if [ -n "$dev" ]; then
			procd_append_param command "--"
			append_arg "$cfg" output_dev "-d"
			append_arg "$cfg" mixer_dev "-m"
			append_arg "$cfg" mixer_type "-t"
			append_arg "$cfg" mixer_control "-c"
			append_arg "$cfg" mixer_index "-i"
		fi
	fi

	procd_close_instance
}

service_triggers() { 
	procd_add_reload_trigger "shairport" 
} 

start_service() {
	config_load shairport
	config_foreach start_instance shairport
}

stop_service() {
	# FIXME: workaround until procd supports custom signal
	killall -SIGINT shairport
}