package rtsp

import (
	"bytes"
	"testing"

	"github.com/stretchr/testify/require"
)

var casesRequest = []struct {
	name string
	byts []byte
	req  *Request
}{
	{
		"options",
		[]byte("OPTIONS rtsp://example.com/media.mp4 RTSP/1.0\r\n" +
			"CSeq: 1\r\n" +
			"Proxy-Require: gzipped-messages\r\n" +
			"Require: implicit-play\r\n" +
			"\r\n"),
		&Request{
			Method: "OPTIONS",
			Url:    "rtsp://example.com/media.mp4",
			Headers: map[string]string{
				"CSeq":          "1",
				"Require":       "implicit-play",
				"Proxy-Require": "gzipped-messages",
			},
		},
	},
	{
		"describe",
		[]byte("DESCRIBE rtsp://example.com/media.mp4 RTSP/1.0\r\n" +
			"CSeq: 2\r\n" +
			"\r\n"),
		&Request{
			Method: "DESCRIBE",
			Url:    "rtsp://example.com/media.mp4",
			Headers: map[string]string{
				"CSeq": "2",
			},
		},
	},
	{
		"announce",
		[]byte("ANNOUNCE rtsp://example.com/media.mp4 RTSP/1.0\r\n" +
			"CSeq: 7\r\n" +
			"Content-Length: 306\r\n" +
			"Content-Type: application/sdp\r\n" +
			"Date: 23 Jan 1997 15:35:06 GMT\r\n" +
			"Session: 12345678\r\n" +
			"\r\n" +
			"v=0\n" +
			"o=mhandley 2890844526 2890845468 IN IP4 126.16.64.4\n" +
			"s=SDP Seminar\n" +
			"i=A Seminar on the session description protocol\n" +
			"u=http://www.cs.ucl.ac.uk/staff/M.Handley/sdp.03.ps\n" +
			"e=mjh@isi.edu (Mark Handley)\n" +
			"c=IN IP4 224.2.17.12/127\n" +
			"t=2873397496 2873404696\n" +
			"a=recvonly\n" +
			"m=audio 3456 RTP/AVP 0\n" +
			"m=video 2232 RTP/AVP 31\n"),
		&Request{
			Method: "ANNOUNCE",
			Url:    "rtsp://example.com/media.mp4",
			Headers: map[string]string{
				"CSeq":           "7",
				"Date":           "23 Jan 1997 15:35:06 GMT",
				"Session":        "12345678",
				"Content-Type":   "application/sdp",
				"Content-Length": "306",
			},
			Content: []byte("v=0\n" +
				"o=mhandley 2890844526 2890845468 IN IP4 126.16.64.4\n" +
				"s=SDP Seminar\n" +
				"i=A Seminar on the session description protocol\n" +
				"u=http://www.cs.ucl.ac.uk/staff/M.Handley/sdp.03.ps\n" +
				"e=mjh@isi.edu (Mark Handley)\n" +
				"c=IN IP4 224.2.17.12/127\n" +
				"t=2873397496 2873404696\n" +
				"a=recvonly\n" +
				"m=audio 3456 RTP/AVP 0\n" +
				"m=video 2232 RTP/AVP 31\n",
			),
		},
	},
	{
		"get_parameter",
		[]byte("GET_PARAMETER rtsp://example.com/media.mp4 RTSP/1.0\r\n" +
			"CSeq: 9\r\n" +
			"Content-Length: 24\r\n" +
			"Content-Type: text/parameters\r\n" +
			"Session: 12345678\r\n" +
			"\r\n" +
			"packets_received\n" +
			"jitter\n"),
		&Request{
			Method: "GET_PARAMETER",
			Url:    "rtsp://example.com/media.mp4",
			Headers: map[string]string{
				"CSeq":           "9",
				"Content-Type":   "text/parameters",
				"Session":        "12345678",
				"Content-Length": "24",
			},
			Content: []byte("packets_received\n" +
				"jitter\n",
			),
		},
	},
}

func TestRequestDecode(t *testing.T) {
	for _, c := range casesRequest {
		t.Run(c.name, func(t *testing.T) {
			req, err := requestDecode(bytes.NewBuffer(c.byts))
			require.NoError(t, err)
			require.Equal(t, c.req, req)
		})
	}
}

func TestRequestEncode(t *testing.T) {
	for _, c := range casesRequest {
		t.Run(c.name, func(t *testing.T) {
			var buf bytes.Buffer
			err := requestEncode(&buf, c.req)
			require.NoError(t, err)
			require.Equal(t, c.byts, buf.Bytes())
		})
	}
}