#!/bin/sh
#

_usage() {
	cat <<EOF
Usage:
	say [-h] -c | -d | -g | -m <message> | -t <dev> [-n] [-o <file>]

		-h	show this help message

		-c	say time
		-d	say date
		-g	godville.net
		-m	custom message
		-t	say device themperature (only cpu dev is supported)
		-n	show notification
		-o	save to file

Example:
	say -m "Hello, World!" -n -o hello.wav

EOF

	exit ${1}
}

_pluralform(){
	n=$(( ${1} % 100 ))
	n1=$(( ${n} % 10 ))

	if [ ${n} -gt 10 -a ${n} -lt 20 ]; then
		echo ${4}
	elif [ ${n1} -gt 1 -a ${n1} -lt 5 ]; then
		echo ${3}
	elif [ ${n1} -eq 1 ]; then
		echo ${2}
	else
		echo ${4}
	fi
}

_date() {
	echo "Сегодня - $( date '+%A' ), $( date2word.lua )."
}

_time() {
	H=$(( $( date '+%H' ) + 0 ))
	M=$(( $( date '+%M' ) + 0 ))

	H="${H} $( _pluralform ${H} час часа часов )"
	M="${M} $( _pluralform ${M} минута минуты минут )"

	echo "${H}. ${M}"
}

_godville() {
	base="https://godville.net/gods/api"
	god=""
	api_key=""
	url="${base}/${god}/${api_key}"
	quote="$( ${CURL} "${url}" | jq ".diary_last" )"

	echo "${quote}"
}

_temperature() {
	D=${1:-none}
	M=

	case ${D} in
		none) M="А куда градусник прикладывать?" ;;
		cpu)
			t=0
			ncpu=$( sysctl -n hw.ncpu )

			for C in $( seq 0 $(( ${ncpu} - 1 )) ); do
				t1=$( sysctl -n dev.cpu.${C}.temperature 2>/dev/null | \
					sed 's/,.*//' )
				t1=${t1:-0}
				if [ ${t1} -gt ${t} ]; then t=${t1}; fi
			done

			if [ ${t} -eq 0 ]; then
				M="Градусник у процессора сломался или не поддерживается."
			else
				M="Температура центрального процессора: ${t}"
				M="${M} $( _pluralform ${t} градус градуса градусов )"
				M="${M} по Цельсию."
			fi
			;;
	esac

	echo "${M}"
}
if [ $# -lt 1 ]; then _usage; fi

SAY_CMD="$( which RHVoice-test )"
if [ -z "${SAY_CMD}" ]; then
	echo "Speech synthesizer not found"
	exit 1
fi
SAY_PARAM="--rate 95 --pitch 120 --volume 30 --profile elena+slt"

CURL="$( which curl )"
if [ -z "${CURL}" ]; then
	echo "curl is required, but not found"
	exit 1
else
	CURL="${CURL} -s"
fi

NOTIFY="$( which notify-send )"

ACTION=
DEV=
MSG=
SEND=0
SUMMARY=

while getopts cdghm:no:t: OPT
do
	case ${OPT} in
		c|d|g|m|t)
			if [ -z "${ACTION}" ]; then
				case ${OPT} in
					c) ACTION="time" ;;
					d) ACTION="date" ;;
					g) 
						ACTION="godville"
						SUMMARY="Годвиль - Вести с полей" ;;
					m) 
						ACTION="message"
						MSG="${OPTARG}" ;;
					t)
						ACTION="temperature"
						DEV="${OPTARG}" ;;
				esac
			else
				echo "Only one of the options -d, -f, -g, -m, -t is allowed."
				exit 2
			fi ;;
		n) SEND=1 ;;
		o) SAY_PARAM="${SAY_PARAM} -o ${OPTARG}" ;;
		h) _usage 0 ;;
		*) _usage 2 ;;
	esac
done

if [ "${ACTION}" != "message" ]; then
	MSG="$( _${ACTION} ${DEV} )"
fi

if [ ${SEND} -eq 1 ] && [ -n "${NOTIFY}" ]; then
	${NOTIFY} -u low -t 10000 -i dialog-information "${SUMMARY:- }" "${MSG}"
fi

echo "${MSG}" | ${SAY_CMD} ${SAY_PARAM}