move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/fileid/from_test.go

@@ -0,0 +1,86 @@
+package fileid
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+)
+
+func TestFromDocument(t *testing.T) {
+	doc := func(attrs ...tg.DocumentAttributeClass) *tg.Document {
+		return &tg.Document{
+			ID:            1,
+			AccessHash:    2,
+			FileReference: []byte{3},
+			DCID:          4,
+			Attributes:    attrs,
+		}
+	}
+	fileID := func(typ Type) FileID {
+		return FileID{
+			Type:          typ,
+			ID:            1,
+			AccessHash:    2,
+			FileReference: []byte{3},
+			DC:            4,
+		}
+	}
+
+	tests := []struct {
+		name string
+		doc  *tg.Document
+		want FileID
+	}{
+		{"File", doc(), fileID(DocumentAsFile)},
+		{"Animation", doc(&tg.DocumentAttributeAnimated{}), fileID(Animation)},
+		{"Sticker", doc(&tg.DocumentAttributeSticker{}), fileID(Sticker)},
+		{"Video", doc(&tg.DocumentAttributeVideo{}), fileID(Video)},
+		{"VideoNote", doc(&tg.DocumentAttributeVideo{RoundMessage: true}), fileID(VideoNote)},
+		{"Audio", doc(&tg.DocumentAttributeAudio{}), fileID(Audio)},
+		{"Voice", doc(&tg.DocumentAttributeAudio{Voice: true}), fileID(Voice)},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.want, FromDocument(tt.doc))
+		})
+	}
+}
+
+func TestFromPhoto(t *testing.T) {
+	tests := []struct {
+		name  string
+		photo *tg.Photo
+		size  rune
+		want  FileID
+	}{
+		{
+			"Photo",
+			&tg.Photo{
+				ID:            1,
+				AccessHash:    2,
+				FileReference: []byte{3},
+				DCID:          4,
+			},
+			'x',
+			FileID{
+				Type:          Photo,
+				ID:            1,
+				AccessHash:    2,
+				FileReference: []byte{3},
+				DC:            4,
+				PhotoSizeSource: PhotoSizeSource{
+					Type:          PhotoSizeSourceThumbnail,
+					FileType:      Photo,
+					ThumbnailType: 'x',
+				},
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.want, FromPhoto(tt.photo, tt.size))
+		})
+	}
+}