package rtcp

import (
	"bytes"
	"fmt"
	"math"
	"testing"
)

func TestFormPayload(t *testing.T) {
	expect := []byte{
		0x81, 0xc9, 0x00, 0x07,
		0xd6, 0xe0, 0x98, 0xda,
		0x6f, 0xad, 0x40, 0xc6,
		0x00, 0xff, 0xff, 0xff,
		0x00, 0x01, 0x83, 0x08,
		0x00, 0x00, 0x00, 0x20,
		0xb9, 0xe1, 0x25, 0x2a,
		0x00, 0x00, 0x2b, 0xf9,
		0x81, 0xca, 0x00, 0x04,
		0xd6, 0xe0, 0x98, 0xda,
		0x01, 0x08, 0x73, 0x61,
		0x78, 0x6f, 0x6e, 0x2d,
		0x70, 0x63, 0x00, 0x00,
	}

	report := ReceiverReport{
		Header: Header{
			Version:     2,
			Padding:     false,
			ReportCount: 1,
			Type:        typeReceiverReport,
		},
		SenderSSRC: 3605043418,
		Blocks: []ReportBlock{
			ReportBlock{
				SSRC:            1873625286,
				FractionLost:    0,
				PacketsLost:     math.MaxUint32,
				HighestSequence: 99080,
				Jitter:          32,
				LSR:             3118540074,
				DLSR:            11257,
			},
		},
		Extensions: nil,
	}

	description := SourceDescription{
		Header: Header{
			Version:     2,
			Padding:     false,
			ReportCount: 1,
			Type:        typeSourceDescription,
		},
		Chunks: []Chunk{
			Chunk{
				SSRC: 3605043418,
				Items: []SDESItem{
					SDESItem{
						Type: typeCName,
						Text: []byte("saxon-pc"),
					},
				},
			},
		},
	}

	c := &client{}
	p := c.formPayload(&report, &description)

	if !bytes.Equal(p, expect) {
		t.Fatalf("unexpected result.\nGot: %v\n Want: %v\n", p, expect)
	}

	bufAddr := fmt.Sprintf("%p", c.buf[:])
	pAddr := fmt.Sprintf("%p", p)
	if bufAddr != pAddr {
		t.Errorf("unexpected result.\nGot: %v\n want: %v\n", pAddr, bufAddr)
	}
}

/*
func TestReceiveAndSend(t *testing.T) {
	quit := make(chan struct{})
	go testServer(quit)
}

func testServer(quit chan struct{}, t *testing.T) {
	const testServerAddr = "localhost:8000"
	sAddr, err := net.ResolveUDPAddr("udp", testServerAddr)
	if err != nil {
		t.Fatalf("could not resolve test server address, failed with error: %v", err)
	}

	conn, err := net.DialUDP("udp", nil, sAddr)
	if err != nil {
		t.Fatalf("could not dial, failed with error: %v", err)
	}

	select {
	case <-quit:
		return
	default:
	}
}

*/