From 7795fa171d9fcab0fac02c71b2c3c66bbc3e19b1 Mon Sep 17 00:00:00 2001
From: Jan-Lukas Else <mail@jlelse.de>
Date: Sat, 9 Nov 2019 17:35:54 +0100
Subject: [PATCH] Purge BunnyCDN 10 seconds after published

---
 bunnycdn.go | 18 ++++++++++++++++++
 config.go   |  9 +++++++++
 main.go     |  5 +++++
 3 files changed, 32 insertions(+)
 create mode 100644 bunnycdn.go

diff --git a/bunnycdn.go b/bunnycdn.go
new file mode 100644
index 0000000..7bead56
--- /dev/null
+++ b/bunnycdn.go
@@ -0,0 +1,18 @@
+package main
+
+import (
+	"net/http"
+)
+
+func Purge(url string) {
+	accessKey, err := GetBunnyCDNKey()
+	if err != nil || len(accessKey) == 0 {
+		return
+	}
+	client := &http.Client{}
+	req, _ := http.NewRequest("POST", "https://bunnycdn.com/api/purge?url="+url, nil)
+	req.Header.Add("Content-Type", "application/json")
+	req.Header.Add("Accept", "application/json")
+	req.Header.Add("AccessKey", accessKey)
+	_, _ = client.Do(req)
+}
diff --git a/config.go b/config.go
index 500e29a..938b20f 100644
--- a/config.go
+++ b/config.go
@@ -28,3 +28,12 @@ func GetBlogURL() (string, error) {
 	}
 	return blogURL, nil
 }
+
+
+func GetBunnyCDNKey() (string, error) {
+	bunnyCDNKey := os.Getenv("BUNNY_CDN_KEY")
+	if len(bunnyCDNKey) == 0 || bunnyCDNKey == "" {
+		return "", errors.New("BUNNY_CDN_KEY not specified")
+	}
+	return bunnyCDNKey, nil
+}
diff --git a/main.go b/main.go
index a3cbed1..cd8d438 100644
--- a/main.go
+++ b/main.go
@@ -54,6 +54,11 @@ func handleMicroPub(w http.ResponseWriter, r *http.Request) {
 		} else {
 			w.Header().Add("Location", location)
 			w.WriteHeader(http.StatusAccepted)
+			// Purge BunnyCDN in 10 seconds
+			go func() {
+				time.Sleep(10 * time.Second)
+				Purge(location)
+			}()
 			return
 		}
 	} else {