package main

import (
	"bytes"
	"flag"
	"fmt"
	"io"
	"log"
	"net"
	"time"

	"../packet"

	"github.com/beatgammit/rtsp"
)

func init() {
	flag.Parse()
}

func main() {
	if len(flag.Args()) >= 1 {
    rtspUrl := flag.Args()[0]
    rtpUrl := flag.Args()[1]

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

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

    p, err := rtsp.ParseSdp(&io.LimitedReader{R: res.Body, N: res.ContentLength})
    if err != nil {
    	log.Fatalln(err)
    }
    log.Printf("%+v", p)

    fmt.Println("Setting up!")
    rtpPort, rtcpPort := 17300, 17319
    res, err = sess.Setup(rtpUrl, fmt.Sprintf("RTP/AVP;unicast;client_port=%d-%d", rtpPort, rtcpPort))
    if err != nil {
    	log.Fatalln(err)
    }
    log.Println(res)

    fmt.Println("Playing !")
    res, err = sess.Play(rtspUrl, res.Header.Get("Session"))
    if err != nil {
    	log.Fatalln(err)
    }
    log.Println(res)

    // create udp connection for rtp stuff
    rtpLaddr, err := net.ResolveUDPAddr("udp", "192.168.0.109:17300")
    if err != nil {
    	fmt.Println("Local rtp addr not set!")
    }
    rtpAddr, err := net.ResolveUDPAddr("udp", "192.168.0.50:17300")
    if err != nil {
    	fmt.Println("Resolving rtp address didn't work!")
    }
    rtpConn, err := net.DialUDP("udp", rtpLaddr, rtpAddr)
    if err != nil {
    	fmt.Println("Rtp dial didn't work!")
    }

    // Create udp connection for rtcp stuff
    rtcpLaddr, err := net.ResolveUDPAddr("udp", "192.168.0.109:17319")
    if err != nil {
    	fmt.Println("Local ")
    }
    rtcpAddr, err := net.ResolveUDPAddr("udp", "192.168.0.50:17301")
    if err != nil {
    	fmt.Println("resolving rtcp address didn't work!")
    }
    rtcpConn, err := net.DialUDP("udp", rtcpLaddr, rtcpAddr)
    if err != nil {
    	fmt.Println("Rtcp dial didnt't work!")
    }

    // let's create a session that will store useful stuff from the connections
    rtpSession := rtp.New(rtpConn, rtcpConn)


    // Loop here until we get something in the channels
    for {
    	fmt.Printf("Length of rtpChan: %v\n", len(rtpSession.RtpChan))
    	time.Sleep(1 * time.Second)
    	select {
    	case rtpPacket := <-rtpSession.RtpChan:
    	default:
    	}
    }
  }
}