Basic message converter and login

Signed-off-by: Sumner Evans <sumner.evans@automattic.com>

msgconv/msgconv.go

@@ -0,0 +1,25 @@
+package msgconv
+
+import (
+	"context"
+
+	"github.com/gotd/td/telegram"
+	"github.com/rs/zerolog"
+	"maunium.net/go/mautrix/event"
+	"maunium.net/go/mautrix/id"
+)
+
+type PortalMethods interface {
+	DownloadMedia(ctx context.Context, uri id.ContentURIString, file *event.EncryptedFileInfo) ([]byte, error)
+	UploadMedia(ctx context.Context, roomID id.RoomID, data []byte, fileName, mimeType string) (url id.ContentURIString, file *event.EncryptedFileInfo, err error)
+}
+
+type MessageConverter struct {
+	PortalMethods
+
+	Client *telegram.Client
+}
+
+func (*MessageConverter) getLogger(ctx context.Context) zerolog.Logger {
+	return zerolog.Ctx(ctx).With().Str("component", "message_converter").Logger()
+}