/*
NAME
  main.go

DESCRIPTION
  main.go provides a program to connect to an RTSP server and request for an
  RTP stream.

AUTHORS
  Saxon A. Nelson-Milton <saxon@ausocean.org>

LICENSE
  This is Copyright (C) 2019 the Australian Ocean Lab (AusOcean).

  It is free software: you can redistribute it and/or modify them
  under the terms of the GNU General Public License as published by the
  Free Software Foundation, either version 3 of the License, or (at your
  option) any later version.

  It is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  for more details.

  You should have received a copy of the GNU General Public License
  in gpl.txt.  If not, see http://www.gnu.org/licenses.

  Copyright (c) 2015, T. Jameson Little <t.jameson.little@gmail.com>
  All rights reserved.

  Redistribution and use in source and binary forms, with or without modification,
  are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

  3. Neither the name of the copyright holder nor the names of its contributors
  may be used to endorse or promote products derived from this software without
  specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package main

import (
	"flag"
	"fmt"
	"log"

	"bitbucket.org/ausocean/av/protocol/rtsp"
)

func main() {
	rtspServerPtr := flag.String("rtsp-server", "", "The RTSP server we would like to get video from.")
	clientPortPtr := flag.Uint("port", 6870, "The port on the client we would like to receive RTP on.")
	trackPtr := flag.String("track", "track1", "The track that we would like to receive media from.")
	flag.Parse()

	sess, err := rtsp.NewSession(*rtspServerPtr)
	if err != nil {
		panic(fmt.Sprintf("creating RTSP session failed with error: %v", err))
	}

	res, err := sess.Options()
	if err != nil {
		log.Fatalln(err)
	}
	fmt.Println("Options:")
	fmt.Println(res)

	res, err = sess.Describe()
	if err != nil {
		log.Fatalln(err)
	}
	fmt.Println("Describe:")
	fmt.Println(res)

	res, err = sess.Setup(*trackPtr, fmt.Sprintf("RTP/AVP;unicast;client_port=%d-%d", *clientPortPtr, *clientPortPtr+1))
	if err != nil {
		log.Fatalln(err)
	}
	log.Println(res)

	res, err = sess.Play()
	if err != nil {
		log.Fatalln(err)
	}
	log.Println(res)

	// TODO(saxon): use RTCP client here to maintain stream.
	for {
	}
}