#!/bin/sh
#
# Amazon Alexa Remote Control (PLAIN shell)
#  alex(at)loetzimmer.de
#
# 2018-06-13: v0.10a (for updates see http://blog.loetzimmer.de/2017/10/amazon-alexa-hort-auf-die-shell-echo.html)
#
###
#
# (no BASHisms were used, should run with any shell)
# - requires cURL for web communication
# - (GNU) sed and awk for extraction
#
##########################################

EMAIL='amazon_account@email.address'
PASSWORD='Very_Secret_Amazon_Account_Password'

LANGUAGE="de-DE"
#LANGUAGE="en-US"

AMAZON='amazon.de'
#AMAZON='amazon.com'

ALEXA='layla.amazon.de'
#ALEXA='pitangui.amazon.com'

# cURL binary
CURL='/usr/bin/curl'

# cURL options
#  -k : if your cURL cannot verify CA certificates, you'll have to trust any
#  --compressed : if your cURL was compiled with libz you may use compression
#  --http1.1 : cURL defaults to HTTP/2 on HTTPS connections if available
OPTS='--compressed --http1.1'
#OPTS='-k --compressed --http1.1'

# browser identity
BROWSER='Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:99.0) Gecko/20100101 Firefox/99.0'

###########################################
# nothing to configure below here
#
TMP="/tmp"
COOKIE="${TMP}/.alexa.cookie"
DEVLIST="${TMP}/.alexa.devicelist.json"
DEVTXT="${TMP}/.alexa.devicelist.txt"

GUIVERSION=0

LIST=""
LOGOFF=""
COMMAND=""
TTS=""
SEQUENCECMD=""
STATIONID=""
QUEUE=""
SONG=""
ALBUM=""
ARTIST=""
ASIN=""
SEEDID=""
HIST=""
LEMUR=""
CHILD=""
PLIST=""
BLUETOOTH=""
LASTALEXA=""

usage()
{
	echo "$0 [-d <device>|ALL] -e <pause|play|next|prev|fwd|rwd|shuffle|vol:<0-100>> |"
	echo "          -b [list|<\"AA:BB:CC:DD:EE:FF\">] | -q | -r <\"station name\"|stationid> |"
	echo "          -s <trackID|'Artist' 'Album'> | -t <ASIN> | -u <seedID> | -v <queueID> | -w <playlistId> |"
	echo "          -a | -m <multiroom_device> [device_1 .. device_X] | -lastalexa | -l | -h"
	echo
	echo "   -e : run command, additional SEQUENCECMDs:"
	echo "        weather,traffic,flashbriefing,goodmorning,singasong,tellstory,speak:'<text>'"
	echo "   -q : query queue"
	echo "   -b : connect/disconnect/list bluetooth device"
	echo "   -r : play tunein radio"
	echo "   -s : play library track/library album"
	echo "   -t : play Prime playlist"
	echo "   -u : play Prime station"
	echo "   -v : play Prime historical queue"
	echo "   -w : play library playlist"
	echo "   -a : list available devices"
	echo "   -m : delete multiroom and/or create new multiroom containing devices"
	echo "   -lastalexa : print serial number that received the last voice command"
	echo "   -l : logoff"
	echo "   -h : help"
}

while [ "$#" -gt 0 ] ; do
	case "$1" in
		-d)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			DEVICE=$2
			shift
			;;
		-e)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			COMMAND=$2
			shift
			;;
		-b)
			if [ "${2#-}" = "${2}" -a -n "$2" ] ; then
				BLUETOOTH=$2
				shift
			else
				BLUETOOTH="null"
			fi
			;;
		-m)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			LEMUR=$2
			shift
			while [ "${2#-}" = "${2}" -a -n "$2" ] ; do
				CHILD="${CHILD} ${2}"
				shift
			done
			;;
		-r)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			STATIONID=$2
			shift
			;;
		-s)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			SONG=$2
			shift
			if [ "${2#-}" = "${2}" -a -n "$2" ] ; then
				ALBUM=$2
				ARTIST=$SONG
				shift
			fi
			;;
		-t)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			ASIN=$2
			shift
			;;
		-u)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			SEEDID=$2
			shift
			;;
		-v)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			HIST=$2
			shift
			;;
		-w)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			PLIST=$2
			shift
			;;
		-d)
			if [ "${2#-}" != "${2}" -o -z "$2" ] ; then
				echo "ERROR: missing argument for ${1}"
				usage
				exit 1
			fi
			DEVICE=$2
			shift
			;;
		-l)
			LOGOFF="true"
			;;
		-a)
			LIST="true"
			;;
		-q)
			QUEUE="true"
			;;
		-lastalexa)
			LASTALEXA="true"
			;;
		-h|-\?|--help)
			usage
			exit 0
			;;
		*)
			echo "ERROR: unknown option ${1}"
			usage
			exit 1
			;;
	esac
	shift
done

case "$COMMAND" in
	pause)
			COMMAND='{"type":"PauseCommand"}'
			;;
	play)
			COMMAND='{"type":"PlayCommand"}'
			;;
	next)
			COMMAND='{"type":"NextCommand"}'
			;;
	prev)
			COMMAND='{"type":"PreviousCommand"}'
			;;
	fwd)
			COMMAND='{"type":"ForwardCommand"}'
			;;
	rwd)
			COMMAND='{"type":"RewindCommand"}'
			;;
	shuffle)
			COMMAND='{"type":"ShuffleCommand","shuffle":"true"}'
			;;
	vol:*)
			VOL=${COMMAND##*:}
			# volume as integer!
			if [ $VOL -le 100 -a $VOL -ge 0 ] ; then
				COMMAND='{"type":"VolumeLevelCommand","volumeLevel":'${VOL}'}'
			else
				echo "ERROR: volume should be an integer between 0 and 100"
				usage
				exit 1
			fi
			;;
	speak:*)
			SEQUENCECMD='Alexa.Speak'
			TTS=$(echo ${COMMAND##*:} | sed -r 's/[^-a-zA-Z0-9_,?!]//g')
			TTS=",\\\"textToSpeak\\\":\\\"${TTS}\\\""
			;;
	weather)
			SEQUENCECMD='Alexa.Weather.Play'
			;;
	traffic)
			SEQUENCECMD='Alexa.Traffic.Play'
			;;
	flashbriefing)
			SEQUENCECMD='Alexa.FlashBriefing.Play'
			;;
	goodmorning)
			SEQUENCECMD='Alexa.GoodMorning.Play'
			;;
	singasong)
			SEQUENCECMD='Alexa.SingASong.Play'
			;;
	tellstory)
			SEQUENCECMD='Alexa.TellStory.Play'
			;;
	"")
			;;
	*)
			echo "ERROR: unknown command \"${COMMAND}\"!"
			usage
			exit 1
			;;
esac

#
# Amazon Login
#
log_in()
{
################################################################
#
# following headers are required:
#	Accept-Language	(possibly for determining login region)
#	User-Agent	(CURL wouldn't store cookies without)
#
################################################################

rm -f ${DEVLIST}
rm -f ${DEVTXT}
rm -f ${COOKIE}

#
# get first cookie and write redirection target into referer
#
${CURL} ${OPTS} -s -D "${TMP}/.alexa.header" -c ${COOKIE} -b ${COOKIE} -A "${BROWSER}" -H "Accept-Language: ${LANGUAGE}" -H "DNT: 1" -H "Connection: keep-alive" -H "Upgrade-Insecure-Requests: 1" -L\
 https://alexa.${AMAZON} | grep "hidden" | sed 's/hidden/\n/g' | grep "value=\"" | sed -r 's/^.*name="([^"]+)".*value="([^"]+)".*/\1=\2\&/g' > "${TMP}/.alexa.postdata"

#
# login empty to generate session
#
${CURL} ${OPTS} -s -c ${COOKIE} -b ${COOKIE} -A "${BROWSER}" -H "Accept-Language: ${LANGUAGE}" -H "DNT: 1" -H "Connection: keep-alive" -H "Upgrade-Insecure-Requests: 1" -L\
 -H "$(grep 'Location: ' ${TMP}/.alexa.header | sed 's/Location: /Referer: /')" -d "@${TMP}/.alexa.postdata" https://www.${AMAZON}/ap/signin | grep "hidden" | sed 's/hidden/\n/g' | grep "value=\"" | sed -r 's/^.*name="([^"]+)".*value="([^"]+)".*/\1=\2\&/g' > "${TMP}/.alexa.postdata2"

#
# login with filled out form
#  !!! referer now contains session in URL
#
${CURL} ${OPTS} -s -D "${TMP}/.alexa.header2" -c ${COOKIE} -b ${COOKIE} -A "${BROWSER}" -H "Accept-Language: ${LANGUAGE}" -H "DNT: 1" -H "Connection: keep-alive" -H "Upgrade-Insecure-Requests: 1" -L\
 -H "Referer: https://www.${AMAZON}/ap/signin/$(awk "\$0 ~/.${AMAZON}.*session-id[ \\s\\t]+/ {print \$7}" ${COOKIE})" --data-urlencode "email=${EMAIL}" --data-urlencode "password=${PASSWORD}" -d "@${TMP}/.alexa.postdata2" https://www.${AMAZON}/ap/signin > "${TMP}/.alexa.login"

# check whether the login has been successful or exit otherwise
if [ -z "$(grep 'Location: https://alexa.*html' ${TMP}/.alexa.header2)" ] ; then
	echo "ERROR: Amazon Login was unsuccessful. Possibly you get a captcha login screen."
	echo " Try logging in to https://alexa.${AMAZON} with your browser. In your browser"
	echo " make sure to have all Amazon related cookies deleted and Javascript disabled!"
	echo
	echo " (For more information have a look at ${TMP}/.alexa.login)"

	rm -f ${COOKIE}
	rm -f "${TMP}/.alexa.header"
	rm -f "${TMP}/.alexa.header2"
	rm -f "${TMP}/.alexa.postdata"
	rm -f "${TMP}/.alexa.postdata2"
	exit 1
fi
	
#
# get CSRF
#
${CURL} ${OPTS} -s -c ${COOKIE} -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 https://${ALEXA}/api/language > /dev/null

rm -f "${TMP}/.alexa.login"
rm -f "${TMP}/.alexa.header"
rm -f "${TMP}/.alexa.header2"
rm -f "${TMP}/.alexa.postdata"
rm -f "${TMP}/.alexa.postdata2"
}

#
# get JSON device list
#
get_devlist()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})"\
 "https://${ALEXA}/api/devices-v2/device?cached=false" > ${DEVLIST}
 
	if [ ! -f ${DEVTXT} ] ; then
		cat ${DEVLIST}| sed 's/\\\\\//\//g' | sed 's/[{}]//g' | awk -v k="text" '{n=split($0,a,","); for (i=1; i<=n; i++) print a[i]}' | sed 's/\"\:\"/\|/g' | sed 's/[\,]/ /g' | sed 's/\"//g' > ${DEVTXT}
	fi
}

check_status()
{
#
# bootstrap with GUI-Version writes GUI version to cookie
#  returns among other the current authentication state
#
	AUTHSTATUS=$(${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L https://${ALEXA}/api/bootstrap?version=${GUIVERSION} | sed -r 's/^.*"authenticated":([^,]+),.*$/\1/g')

	if [ "$AUTHSTATUS" = "true" ] ; then
		return 1
	fi

	return 0
}

#
# set device specific variables from JSON device list
#
set_var()
{
	ATTR="accountName"
	NAME=`grep ${ATTR}\| ${DEVTXT} | sed "s/^.*${ATTR}|//" | sed 's/ /_/g'`

	ATTR="deviceType"
	TYPE=`grep ${ATTR}\| ${DEVTXT} | sed "s/^.*${ATTR}|//" | sed 's/ /_/g'`

	ATTR="serialNumber"
	SERIAL=`grep ${ATTR}\| ${DEVTXT} | sed "s/^.*${ATTR}|//" | sed 's/ /_/g'`

	ATTR="deviceOwnerCustomerId"
	MEDIAID=`grep ${ATTR}\| ${DEVTXT} | sed "s/^.*${ATTR}|//" | sed 's/ /_/g'`

	ATTR="deviceFamily"
	FAMILY=`grep ${ATTR}\| ${DEVTXT} | sed "s/^.*${ATTR}|//" | sed 's/ /_/g'`


	if [ -z "${DEVICE}" ] ; then
		# if no device was supplied, use the first Echo(dot) in device list
        	IDX=0
		for I in $FAMILY ; do
			if [ "$I" = "ECHO" -o "$I" = "KNIGHT" -o "$I" = "ROOK" ] ; then
			break;
			fi
			IDX=$((IDX+1))
		done

		C=0
		for I in $NAME ; do
			if [ $C -eq $IDX ] ; then
				DEVICE=$I
				break
			fi
			C=$((C+1))
		done
		echo "setting default device to:"
		echo ${DEVICE}
	else
		DEVICE=`echo $DEVICE | sed 's/ /_/g'`
		IDX=0
		for I in $NAME ; do
			if [ "$I" = "$DEVICE" ] ; then
				break;
			fi
			IDX=$((IDX+1))
		done
	fi

	C=0
	for I in $MEDIAID ; do
		if [ $C -eq $IDX ] ; then
			MEDIAOWNERCUSTOMERID=$I
			break
		fi
		C=$((C+1))
	done

	C=0
	for I in $TYPE ; do
		if [ $C -eq $IDX ] ; then
			DEVICETYPE=$I
			break
		fi
		C=$((C+1))
	done

	C=0
	for I in $SERIAL ; do
		if [ $C -eq $IDX ] ; then
			DEVICESERIALNUMBER=$I
			break
		fi
		C=$((C+1))
	done

	if [ -z "${DEVICESERIALNUMBER}" ] ; then
		echo "ERROR: unkown device dev:${DEVICE}"
		exit 1
	fi
}

#
# execute command
# (SequenceCommands by Michael Geramb and Ralf Otto)
#
run_cmd()
{
if [ -n "${SEQUENCECMD}" ]
	then
		echo "Sequence command: ${SEQUENCECMD}"
		COMMAND="{\"behaviorId\":\"PREVIEW\",\"sequenceJson\":\"{\\\"@type\\\":\\\"com.amazon.alexa.behaviors.model.Sequence\\\",\\\"startNode\\\":{\\\"@type\\\":\\\"com.amazon.alexa.behaviors.model.OpaquePayloadOperationNode\\\",\\\"type\\\":\\\"${SEQUENCECMD}\\\",\\\"operationPayload\\\":{\\\"deviceType\\\":\\\"${DEVICETYPE}\\\",\\\"deviceSerialNumber\\\":\\\"${DEVICESERIALNUMBER}\\\",\\\"locale\\\":\\\"${LANGUAGE}\\\",\\\"customerId\\\":\\\"${MEDIAOWNERCUSTOMERID}\\\"${TTS}}}}\",\"status\":\"ENABLED\"}"

		${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
		 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
		 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d ${COMMAND}\
		 "https://${ALEXA}/api/behaviors/preview"
else
	${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
	 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
	 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d ${COMMAND}\
	 "https://${ALEXA}/api/np/command?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}"
fi
}

#
# play TuneIn radio station
#
play_radio()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST\
 "https://${ALEXA}/api/tunein/queue-and-play?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}&guideId=${STATIONID}&contentType=station&callSign=&mediaOwnerCustomerId=${MEDIAOWNERCUSTOMERID}"
}

#
# play library track
#
play_song()
{
	if [ -z "${ALBUM}" ] ; then
		JSON="{\"trackId\":\"${SONG}\",\"playQueuePrime\":true}"
	else
		JSON="{\"albumArtistName\":\"${ARTIST}\",\"albumName\":\"${ALBUM}\"}"
	fi

${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d "${JSON}"\
 "https://${ALEXA}/api/cloudplayer/queue-and-play?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}&mediaOwnerCustomerId=${MEDIAOWNERCUSTOMERID}&shuffle=false"
}

#
# play library playlist
#
play_playlist()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d "{\"playlistId\":\"${PLIST}\",\"playQueuePrime\":true}"\
 "https://${ALEXA}/api/cloudplayer/queue-and-play?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}&mediaOwnerCustomerId=${MEDIAOWNERCUSTOMERID}&shuffle=false"
}

#
# play PRIME playlist
#
play_prime_playlist()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d "{\"asin\":\"${ASIN}\"}"\
 "https://${ALEXA}/api/prime/prime-playlist-queue-and-play?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}&mediaOwnerCustomerId=${MEDIAOWNERCUSTOMERID}"
}

#
# play PRIME station
#
play_prime_station()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d "{\"seed\":\"{\\\"type\\\":\\\"KEY\\\",\\\"seedId\\\":\\\"${SEEDID}\\\"}\",\"stationName\":\"none\",\"seedType\":\"KEY\"}"\
 "https://${ALEXA}/api/gotham/queue-and-play?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}&mediaOwnerCustomerId=${MEDIAOWNERCUSTOMERID}"
}

#
# play PRIME historical queue
#
play_prime_hist_queue()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d "{\"deviceType\":\"${DEVICETYPE}\",\"deviceSerialNumber\":\"${DEVICESERIALNUMBER}\",\"mediaOwnerCustomerId\":\"${MEDIAOWNERCUSTOMERID}\",\"queueId\":\"${HIST}\",\"service\":null,\"trackSource\":\"TRACK\"}"\
 "https://${ALEXA}/api/media/play-historical-queue"
}

#
# current queue
#
show_queue()
{
	echo "/api/np/player"
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X GET \
 "https://${ALEXA}/api/np/player?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}"
	echo
	echo "/api/np/queue"
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X GET \
 "https://${ALEXA}/api/np/queue?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}"
	echo
	echo "/api/media/state"
 ${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X GET \
 "https://${ALEXA}/api/media/state?deviceSerialNumber=${DEVICESERIALNUMBER}&deviceType=${DEVICETYPE}"
	echo
}

#
# deletes a multiroom device
#
delete_multiroom()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X DELETE \
 "https://${ALEXA}/api/lemur/tail/${DEVICESERIALNUMBER}"
}

#
# creates a multiroom device
#
create_multiroom()
{
	JSON="{\"id\":null,\"name\":\"${LEMUR}\",\"members\":["
	for DEVICE in $CHILD ; do
		set_var
		JSON="${JSON}{\"dsn\":\"${DEVICESERIALNUMBER}\",\"deviceType\":\"${DEVICETYPE}\"},"
	done
	JSON="${JSON%,}]}"

${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d "${JSON}" \
 "https://${ALEXA}/api/lemur/tail"
}

#
# list bluetooth devices
#
list_bluetooth()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X GET \
 "https://${ALEXA}/api/bluetooth?cached=false"
}

#
# connect bluetooth device
#
connect_bluetooth()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST -d "{\"bluetoothDeviceAddress\":\"${BLUETOOTH}\"}"\
 "https://${ALEXA}/api/bluetooth/pair-sink/${DEVICETYPE}/${DEVICESERIALNUMBER}"
}

#
# disconnect bluetooth device
#
disconnect_bluetooth()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X POST \
 "https://${ALEXA}/api/bluetooth/disconnect-sink/${DEVICETYPE}/${DEVICESERIALNUMBER}"
}

#
# device that sent the last command
# (by Markus Wennesheimer)
#
last_alexa()
{
${CURL} ${OPTS} -s -b ${COOKIE} -A "Mozilla/5.0" -H "DNT: 1" -H "Connection: keep-alive" -L\
 -H "Content-Type: application/json; charset=UTF-8" -H "Referer: https://alexa.${AMAZON}/spa/index.html" -H "Origin: https://alexa.${AMAZON}"\
 -H "csrf: $(awk "\$0 ~/.${AMAZON}.*csrf[ \\s\\t]+/ {print \$7}" ${COOKIE})" -X GET \
 "https://${ALEXA}/api/activities?startTime=&size=1&offset=1" | sed -r 's/^.*serialNumber":"([^"]+)".*$/\1/'
 }

#
# logout
#
log_off()
{
${CURL} ${OPTS} -s -c ${COOKIE} -b ${COOKIE} -A "${BROWSER}" -H "DNT: 1" -H "Connection: keep-alive" -L\
 https://${ALEXA}/logout > /dev/null

rm -f ${DEVLIST}
rm -f ${DEVTXT}
rm -f ${COOKIE}
}

if [ -z "$LASTALEXA" -a -z "$BLUETOOTH" -a -z "$LEMUR" -a -z "$PLIST" -a -z "$HIST" -a -z "$SEEDID" -a -z "$ASIN" -a -z "$QUEUE" -a -z "$COMMAND" -a -z "$STATIONID" -a -z "$SONG" -a -n "$LOGOFF" ] ; then
	echo "only logout option present, logging off ..."
	log_off
	exit 0
fi

if [ ! -f ${COOKIE} ] ; then
	echo "cookie does not exist. logging in ..."
	log_in
fi

check_status
if [ $? -eq 0 ] ; then
	echo "cookie expired, logging in again ..."
	log_in
	check_status
	if [ $? -eq 0 ] ; then
		echo "log in failed, aborting"
		exit 1
	fi
fi

if [ ! -f ${DEVTXT} ] ; then
	echo "device list does not exist. downloading ..."
	get_devlist
	if [ ! -f ${DEVTXT} ] ; then
		echo "failed to download device list, aborting"
		exit 1
	fi
fi

if [ -n "$COMMAND" ] ; then
	set_var
	if [ -n "$COMMAND" ] ; then
		echo "sending cmd:${COMMAND} to dev:${DEVICE} type:${DEVICETYPE} serial:${DEVICESERIALNUMBER} customerid:${MEDIAOWNERCUSTOMERID}"
		run_cmd
	fi
elif [ -n "$LEMUR" ] ; then
	DEVICE="${LEMUR}"
	set_var
	if [ -n "$DEVICESERIALNUMBER" ] ; then
		delete_multiroom
	fi
	if [ -z "$CHILD" ] ; then
		echo "Deleted multi room dev:${LEMUR} serial:${DEVICESERIALNUMBER}"
	else
		echo "Creating multi room dev:${LEMUR} member_dev(s):${CHILD}"
		create_multiroom
	fi
	rm -f ${DEVLIST}
	rm -f ${DEVTXT}
	get_devlist
elif [ -n "$BLUETOOTH" ] ; then
	set_var
	if [ "$BLUETOOTH" = "null" ] ; then
		echo "disconnecting dev:${DEVICE} type:${DEVICETYPE} serial:${DEVICESERIALNUMBER} from bluetooth"
		disconnect_bluetooth
	elif [ "$BLUETOOTH" = "list" -o "$BLUETOOTH" = "List" -o "$BLUETOOTH" = "LIST" ] ; then
		echo "bluetooth api list:"
		list_bluetooth
	else
		echo "connecting dev:${DEVICE} type:${DEVICETYPE} serial:${DEVICESERIALNUMBER} to bluetooth device:${BLUETOOTH}"
		connect_bluetooth
	fi
elif [ -n "$STATIONID" ] ; then
	set_var
	echo "playing stationID:${STATIONID} on dev:${DEVICE} type:${DEVICETYPE} serial:${DEVICESERIALNUMBER} mediaownerid:${MEDIAOWNERCUSTOMERID}"
	play_radio
elif [ -n "$SONG" ] ; then
	set_var
	echo "playing library track:${SONG} on dev:${DEVICE} type:${DEVICETYPE} serial:${DEVICESERIALNUMBER} mediaownerid:${MEDIAOWNERCUSTOMERID}"
	play_song
elif [ -n "$PLIST" ] ; then
	set_var
	echo "playing library playlist:${PLIST} on dev:${DEVICE} type:${DEVICETYPE} serial:${DEVICESERIALNUMBER} mediaownerid:${MEDIAOWNERCUSTOMERID}"
	play_playlist
elif [ -n "$ASIN" ] ; then
	set_var
	echo "playing PRIME playlist ${ASIN}"
	play_prime_playlist
elif [ -n "$SEEDID" ] ; then
	set_var
	echo "playing PRIME station ${SEEDID}"
	play_prime_station
elif [ -n "$HIST" ] ; then
	set_var
	echo "playing PRIME historical queue ${HIST}"
	play_prime_hist_queue
elif [ -n "$QUEUE" ]; then
	set_var
	echo "queue info for dev:${DEVICE} type:${DEVICETYPE} serial:${DEVICESERIALNUMBER}"
	show_queue
elif [ -n "$LIST" ] ; then
	ATTR="accountName"
	echo "the following devices exist in your account:"
	grep ${ATTR}\| ${DEVTXT} | sed "s/^.*${ATTR}|//" | sed 's/ /_/g'
elif [ -n "$LASTALEXA" ] ; then
	last_alexa
else
	echo "no alexa command received"
fi

if [ -n "$LOGOFF" ] ; then
	echo "logout option present, logging off ..."
	log_off
fi