package hls

import (
	"context"
	"net"
	"net/http"
	"testing"

	"github.com/bluenviron/mediacommon/pkg/codecs/mpeg4audio"
	"github.com/bluenviron/mediacommon/pkg/formats/mpegts"
	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/require"

	"github.com/bluenviron/mediamtx/internal/conf"
	"github.com/bluenviron/mediamtx/internal/defs"
	"github.com/bluenviron/mediamtx/internal/test"
)

func TestSource(t *testing.T) {
	track1 := &mpegts.Track{
		Codec: &mpegts.CodecH264{},
	}

	track2 := &mpegts.Track{
		Codec: &mpegts.CodecMPEG4Audio{
			Config: mpeg4audio.Config{
				Type:         2,
				SampleRate:   44100,
				ChannelCount: 2,
			},
		},
	}

	tracks := []*mpegts.Track{
		track1,
		track2,
	}

	gin.SetMode(gin.ReleaseMode)
	router := gin.New()

	router.GET("/stream.m3u8", func(ctx *gin.Context) {
		ctx.Header("Content-Type", `application/vnd.apple.mpegurl`)
		ctx.Writer.Write([]byte("#EXTM3U\n" +
			"#EXT-X-VERSION:3\n" +
			"#EXT-X-ALLOW-CACHE:NO\n" +
			"#EXT-X-TARGETDURATION:2\n" +
			"#EXT-X-MEDIA-SEQUENCE:0\n" +
			"#EXTINF:2,\n" +
			"segment1.ts\n" +
			"#EXTINF:2,\n" +
			"segment2.ts\n" +
			"#EXTINF:2,\n" +
			"segment2.ts\n" +
			"#EXT-X-ENDLIST\n"))
	})

	router.GET("/segment1.ts", func(ctx *gin.Context) {
		ctx.Header("Content-Type", `video/MP2T`)

		w := mpegts.NewWriter(ctx.Writer, tracks)

		err := w.WriteMPEG4Audio(track2, 1*90000, [][]byte{{1, 2, 3, 4}})
		require.NoError(t, err)

		err = w.WriteH264(track1, 2*90000, 2*90000, true, [][]byte{
			{7, 1, 2, 3}, // SPS
			{8},          // PPS
		})
		require.NoError(t, err)
	})

	router.GET("/segment2.ts", func(ctx *gin.Context) {
		ctx.Header("Content-Type", `video/MP2T`)

		w := mpegts.NewWriter(ctx.Writer, tracks)

		err := w.WriteMPEG4Audio(track2, 3*90000, [][]byte{{1, 2, 3, 4}})
		require.NoError(t, err)
	})

	s := &http.Server{Handler: router}

	ln, err := net.Listen("tcp", "localhost:5780")
	require.NoError(t, err)

	go s.Serve(ln)
	defer s.Shutdown(context.Background())

	te := test.NewSourceTester(
		func(p defs.StaticSourceParent) defs.StaticSource {
			return &Source{
				Parent: p,
			}
		},
		"http://localhost:5780/stream.m3u8",
		&conf.Path{},
	)
	defer te.Close()

	<-te.Unit
}