Add apimodel.FilterActionNone

internal/api/model/filterv2.go

@@ -63,6 +63,8 @@ type FilterV2 struct {
 type FilterAction string
 
 const (
+	// FilterActionNone filters should not exist, except internally, for partially constructed or invalid filters.
+	FilterActionNone FilterAction = ""
 	// FilterActionWarn filters will include this status in API results with a warning.
 	FilterActionWarn FilterAction = "warn"
 	// FilterActionHide filters will remove this status from API results.

internal/typeutils/internaltofrontend.go

@@ -1922,7 +1922,7 @@ func filterActionToAPIFilterAction(m gtsmodel.FilterAction) apimodel.FilterActio
 	case gtsmodel.FilterActionHide:
 		return apimodel.FilterActionHide
 	}
-	return ""
+	return apimodel.FilterActionNone
 }
 
 // convertEmojisToAPIEmojis will convert a slice of GTS model emojis to frontend API model emojis, falling back to IDs if no GTS models supplied.