Switch file to io stream in recognizer interface

internal/contract/contract.go

@@ -1,6 +1,8 @@
 package contract
 
 import (
+	"io"
+
 	"git.vakhrushev.me/av/transcriber/internal/entity"
 )
 
@@ -8,13 +10,8 @@ type AudioFileConverter interface {
 	Convert(src, dest string) error
 }
 
-type YandexS3Uploader interface {
-	UploadFile(filePath, fileName string) error
-	FileUrl(fileName string) string
-}
-
 type AudioRecognizer interface {
-	RecognizeFile(filePath string) (operationID string, err error)
+	Recognize(file io.Reader, fileName string) (operationID string, err error)
 	GetRecognitionText(operationID string) (string, error)
 	CheckRecognitionStatus(operationID string) (*entity.RecognitionResult, error)
 }