#!/bin/bash

exec 3>/tmp/"${0##*/}".1debug$$
export BASH_XTRACEFD=3
set -x
echo "$@" >&3
env >&3

send() {

echo "Sending $1" >&3
echo "$1" >&2

}

while read -r cmd; do
echo "Got \"$cmd\"" >&3
case $cmd in
"Version?")
send "OK:1.0.0"
;;
"HasTuner?")
send "OK:No"
;;
"CloseRecorder")
send "OK:Terminating"
exit 0
;;
"HasPictureAttributes?")
send "OK:No"
;;
"FlowControl?")
send "OK:XON/XOFF"
;;
BlockSize:*)
send "OK"
;;
TuneChannel:*)
channel=${cmd##*:}
case $channel in
3) URL="https://..."
;;
4) URL="https://..."
;;
esac
send "OK"
;;
"LockTimeout?")
send "OK:10000"
;;
"SignalStrengthPercent?")
send "OK:100"
;;
"HasLock?")
send "OK:Yes"
;;
"StartStreaming")
ffmpeg -i "udp://@239.255.42.42:5004" -acodec copy -vcodec copy -f mpegts - 2>&3 &
ffmpeg_pid=$!
send "OK:Started"
;;
"StopStreaming")
if [ -n "$ffmpeg_pid" ] && [ -d /proc/$ffmpeg_pid ]; then
kill  $ffmpeg_pid
fi
send "OK:Stopped"
;;
"IsOpen?")
if [ -n "$ffmpeg_pid" ] && [ -d /proc/$ffmpeg_pid ]; then
send "OK:Open"
else
send "OK:No"
fi
;;
"XON")
echo "Uh oh! need to handle \"$cmd\" at $(date)" >&3
send "OK"
;;
"XOFF")
echo "Uh oh! need to handle \"$cmd\" at $(date)" >&3
send "OK"
;;
*)
echo "Unknown cmd \"$cmd\"" >&3
;;
esac
done