fix: Use list append instead of indexing

README.md

@@ -6,6 +6,7 @@ Lightweight HTTP server to handle webhooks from [listmonk](https://listmonk.app)
 ### Supported messengers
 
 * Pinpoint
+* AWS SES
 
 ### Development
 
@@ -18,7 +19,7 @@ make build
 
 Run the binary which starts a server on :8082
 ```
-./listmonk-messenger.bin --config config.toml --msgr pinpoint
+./listmonk-messenger.bin --config config.toml --msgr pinpoint --msgr ses
 ```
 
 * Setting up webhooks

handlers.go

@@ -108,17 +108,18 @@ func handlePostback(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if len(data.Attachments) > 0 {
-		a := make([]messenger.Attachment, 0, len(data.Attachments))
-		for i := 0; i < len(data.Attachments); i++ {
-			a[i] = messenger.Attachment{
-				Name:    data.Attachments[i].Name,
-				Header:  data.Attachments[i].Header,
-				Content: make([]byte, len(data.Attachments[i].Content)),
+		files := make([]messenger.Attachment, 0, len(data.Attachments))
+		for _, f := range data.Attachments {
+			a := messenger.Attachment{
+				Name:    f.Name,
+				Header:  f.Header,
+				Content: make([]byte, len(f.Content)),
 			}
-			copy(a[i].Content, data.Attachments[i].Content)
+			copy(a.Content, f.Content)
+			files = append(files, a)
 		}
 
-		message.Attachments = a
+		message.Attachments = files
 	}
 
 	app.logger.DebugWith("sending message").String("provider", provider).String("message", fmt.Sprintf("%#+v", message)).Write()

messenger/ses.go

@@ -41,13 +41,14 @@ func (s sesMessenger) Push(msg Message) error {
 	var files []smtppool.Attachment
 	if msg.Attachments != nil {
 		files = make([]smtppool.Attachment, 0, len(msg.Attachments))
-		for i := 0; i < len(msg.Attachments); i++ {
-			files[i] = smtppool.Attachment{
-				Filename: msg.Attachments[i].Name,
-				Header:   msg.Attachments[i].Header,
-				Content:  make([]byte, len(msg.Attachments[i].Content)),
+		for _, f := range msg.Attachments {
+			a := smtppool.Attachment{
+				Filename: f.Name,
+				Header:   f.Header,
+				Content:  make([]byte, len(f.Content)),
 			}
-			copy(files[i].Content, msg.Attachments[i].Content)
+			copy(a.Content, f.Content)
+			files = append(files, a)
 		}
 	}