From 580724e9f9564cea1669eabccf7c485d40941564 Mon Sep 17 00:00:00 2001
From: Jan-Lukas Else <mail@jlelse.de>
Date: Mon, 20 Apr 2020 21:46:59 +0200
Subject: [PATCH] Prevent empty commits and webmention spam

---
 storage.go    | 7 +++++++
 webmention.go | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/storage.go b/storage.go
index cefa621..5a69e0e 100644
--- a/storage.go
+++ b/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")
diff --git a/webmention.go b/webmention.go
index ccce08d..53032cc 100644
--- a/webmention.go
+++ b/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())