package y4m

import (
	"git.gammaspectra.live/S.O.N.G/Ignite/frame"
	"git.gammaspectra.live/S.O.N.G/Ignite/testdata"
	"io"
	"net/http"
	"os"
	"testing"
)

func testDecode(sample testdata.TestSample, t *testing.T) {
	var reader io.Reader
	var err error

	if _, err = os.Stat(sample.Path); err != nil {
		if sample.SkipNotFound || sample.Url == "" {
			t.Skip("skipping without sample")
		}
		response, err := http.DefaultClient.Get(sample.Url)
		if err != nil {
			t.Fatal(err)
		}
		defer response.Body.Close()
		reader = response.Body
	} else {
		f, err := os.Open(sample.Path)
		if err != nil {
			t.Fatal(err)
		}
		defer f.Close()
		reader = f
	}

	var y4m *Decoder

	switch sample.Type {
	case "y4m":
		y4m, err = NewDecoder(reader, nil)
	case "y4m.xz":
		y4m, err = NewXZCompressedDecoder(reader, nil)
	default:
		t.Fatal("unsupported sample type")
	}

	if err != nil {
		t.Fatal(err)
	} else {
		defer y4m.Close()
		decoded := 0

		var frameProperties frame.Properties
		for decodedFrame := range y4m.DecodeStream().Channel() {
			if decoded == 0 {
				frameProperties = decodedFrame.Properties()
			}
			//ingest
			decoded++
			if decoded%50 == 0 {
				t.Logf("%d/%d", decoded, sample.Frames)
			}
		}

		if decoded != sample.Frames {
			t.Fatalf("expected %d frames, got %d", sample.Frames, decoded)
		}

		if frameProperties.Width != sample.Width {
			t.Fatalf("expected %d width, got %d", sample.Width, frameProperties.Width)
		}

		if frameProperties.Height != sample.Height {
			t.Fatalf("expected %d height, got %d", sample.Height, frameProperties.Height)
		}

		if frameProperties.ColorSpace.String() != sample.ColorSpace.String() {
			t.Fatalf("expected %s color space, got %s", sample.ColorSpace.String(), frameProperties.ColorSpace.String())
		}
	}
}

func TestDecode_YUV420_720p24_8bit(t *testing.T) {
	testDecode(testdata.Y4M_Sintel_Trailer_720p24_YUV420_8bit, t)
}

func TestDecode_YUV444_720p50_8bit(t *testing.T) {
	testDecode(testdata.Y4M_Ducks_Take_Off_720p50_YUV444_8bit, t)
}

func TestDecode_YUV422_720p50_8bit(t *testing.T) {
	testDecode(testdata.Y4M_Ducks_Take_Off_720p50_YUV422_8bit, t)
}

func TestDecode_YUV420_2160p60_10bit(t *testing.T) {
	testDecode(testdata.Y4M_Netflix_FoodMarket_2160p60_YUV420_10bit, t)
}

func TestDecode_YUV420_360p24_8bit_xz(t *testing.T) {
	testDecode(testdata.Y4M_Big_Buck_Bunny_360p24_YUV420_8bit, t)
}