Prevent empty commits and webmention spam

storage.go

@@ -127,6 +127,13 @@ func (g *Git) unsafeUpdateFile(filepath string, file string, message string) err
 	if err != nil {
 		return errors.New("failed to write to file")
 	}
+	status, err := w.Status()
+	if err == nil && status.IsClean() {
+		// No file changes, prevent empty commit
+		return nil
+	} else {
+		err = nil
+	}
 	_, err = w.Add(filepath)
 	if err != nil {
 		return errors.New("failed to stage file")

webmention.go

@@ -138,7 +138,7 @@ func HandleWebmention(w http.ResponseWriter, r *http.Request) {
 		e := saveWebmention(&Mention{
 			Source: sourceUrl.String(),
 			Target: targetUrl.String(),
-			Date:   time.Now().Format(time.RFC3339),
+			Date:   time.Now().Format("2006-01-02"),
 		})
 		if e != nil {
 			fmt.Println("Failed to save webmention:", e.Error())