From 07b511e3098b8add29d68c59efba1e965d2d37fa Mon Sep 17 00:00:00 2001
From: Eddy de Vink <github@eddydev.ink>
Date: Thu, 24 Sep 2026 23:14:28 +0200
Subject: [PATCH] feat: extensie-afgeleide mimetype (png/jpg/jpeg vooraf
 ondersteund in sendImageMessage)

---
 src/whatsappApi.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/whatsappApi.js b/src/whatsappApi.js
index 9155d37..1d8e71a 100644
--- a/src/whatsappApi.js
+++ b/src/whatsappApi.js
@@ -7,6 +7,14 @@ const SESSION = process.env.WHATSAPP_SESSION
 const MAX_RETRIES = 3
 const RETRY_DELAY_MS = 1000
 
+// Laat de bridge de juiste mimetype gebruiken bij elke beeld-extensie (png/jpg/jpeg
+// vooraf ondersteund; onbekende extensies vallen terug op image/png).
+function mimeFromFilename(filename) {
+  const ext = (filename || '').split('.').pop().toLowerCase()
+  if (ext === 'jpg' || ext === 'jpeg') return 'image/jpeg'
+  return 'image/png'
+}
+
 async function sleep(ms) {
   return new Promise(resolve => setTimeout(resolve, ms))
 }
@@ -56,7 +64,7 @@ async function sendImageMessage(chatId, filePath, filename) {
       chatId,
       contentType: 'MessageMedia',
       content: {
-        mimetype: 'image/png',
+        mimetype: mimeFromFilename(filename),
         data: base64Data,
         filename: filename
       }