generate the QR codes directly instead of using an API

main.py

@@ -4,6 +4,9 @@
 import logging
 import os
 import datetime
+import qrcode
+import io
+import base64
 
 # Configure logging
 logging.basicConfig(
@@ -57,10 +60,17 @@ def qrcodes():
 
     for person in people:
         person_base64_reversed = person.encode("utf-8").hex()[::-1]
+
+        qr = qrcode.make(f"{config['url']}/qrscan/{person_base64_reversed}")
+        buffer = io.BytesIO()
+        qr.save(buffer, format="PNG")
+        qr_img_bytes = base64.b64encode(buffer.getvalue()).decode()
+        buffer.close()
+
         people_dict.append(
             {
                 "name": person.capitalize(),
-                "qr": f"https://api.qrserver.com/v1/create-qr-code/?data={config['url']}/qrscan/{person_base64_reversed}&size=200x200",
+                "qr": qr_img_bytes,
             }
         )
 

requirements.txt

@@ -1,2 +1,3 @@
 flask
-redis
+redis
+qrcode

templates/qrcodes.html

@@ -16,7 +16,12 @@ <h2>QR Codes [{% if active %}Active{% else %}Inactive{% endif %}]</h2>
     {% for person in people_dict %}
     <tr>
       <td>{{ person["name"] }}</td>
-      <td><img src="{{ person['qr'] }}" alt="{{ person['name'] }}" /></td>
+      <td>
+        <img
+          src="data:image/png;base64,{{ person['qr'] }}"
+          alt="{{ person['name'] }}"
+        />
+      </td>
     </tr>
     {% endfor %}
   </tbody>