s3 support

internal/rpc/errors.go

@@ -107,6 +107,11 @@ func locationInvalidErr() error      { return tgerr.New(400, "LOCATION_INVALID")
 func fileIDInvalidErr() error        { return tgerr.New(400, "FILE_ID_INVALID") }
 func documentInvalidErr() error      { return tgerr.New(400, "DOCUMENT_INVALID") }
 
+// storageFullErr surfaces the low-disk-space upload guard. Deliberately not
+// a flood-wait: a full disk won't resolve itself in 60 seconds, and telling
+// the client to retry shortly would be misleading.
+func storageFullErr() error { return tgerr.New(400, "STORAGE_FULL") }
+
 func mediaEmptyErr() error { return tgerr.New(400, "MEDIA_EMPTY") }
 
 func frozenMethodInvalidErr() error      { return tgerr.New(420, "FROZEN_METHOD_INVALID") }

internal/rpc/photos.go

@@ -684,6 +684,8 @@ func photoUploadErr(err error) error {
 		return filePartsInvalidErr()
 	case errors.Is(err, domain.ErrPhotoInvalid):
 		return photoInvalidErr()
+	case errors.Is(err, domain.ErrStorageFull):
+		return storageFullErr()
 	default:
 		return internalErr()
 	}

internal/rpc/send_media.go

@@ -1144,6 +1144,8 @@ func mediaUploadErr(err error) error {
 		return photoInvalidErr()
 	case errors.Is(err, domain.ErrDocumentInvalid):
 		return mediaInvalidErr()
+	case errors.Is(err, domain.ErrStorageFull):
+		return storageFullErr()
 	default:
 		return internalErr()
 	}

internal/rpc/upload.go

@@ -327,6 +327,8 @@ func fileSaveErr(err error) error {
 		return filePartTooBigErr()
 	case errors.Is(err, domain.ErrUploadQuotaExceeded):
 		return floodWaitErr(60)
+	case errors.Is(err, domain.ErrStorageFull):
+		return storageFullErr()
 	default:
 		return internalErr()
 	}