Notifications - Discord #3721 - Dont use   for discord (Actually Discord:// notifications should always use plaintext format anyway)

changedetectionio/notification/handler.py

@@ -259,9 +259,12 @@ def apply_service_tweaks(url, n_body, n_title, requested_output_format):
     elif (url.startswith('discord://') or url.startswith('https://discordapp.com/api/webhooks')
           or url.startswith('https://discord.com/api'))\
             and 'html' in requested_output_format:
-        # Discord doesn't support HTML, replace <br> with newlines
+        # Discord doesn't render HTML — convert markup to plain text equivalents.
+        # &nbsp; is injected upstream to preserve double-spaces for HTML email clients;
+        # Discord displays it as the literal string "&nbsp;" so strip it here.
         n_body = n_body.strip().replace('<br>', '\n')
         n_body = n_body.replace('</br>', '\n')
+        n_body = n_body.replace('&nbsp;', ' ')
         n_body = newline_re.sub('\n', n_body)
 
         # Don't replace placeholders or truncate here - let the custom Discord plugin handle it

changedetectionio/static/js/notifications.js

@@ -1,5 +1,20 @@
+function checkDiscordHtmlWarning() {
+    var urls = $('textarea.notification-urls').val() || '';
+    var format = $('select.notification-format').val() || '';
+    var isDiscord = /discord:\/\/|https:\/\/discord(?:app)?\.com\/api/i.test(urls);
+    var isHtml = format === 'html' || format === 'htmlcolor';
+    if (isDiscord && isHtml) {
+        $('#discord-html-format-warning').show();
+    } else {
+        $('#discord-html-format-warning').hide();
+    }
+}
+
 $(document).ready(function () {
 
+    $('textarea.notification-urls, select.notification-format').on('change input', checkDiscordHtmlWarning);
+    checkDiscordHtmlWarning();
+
     $('#add-email-helper').click(function (e) {
         e.preventDefault();
         email = prompt("Destination email");

changedetectionio/templates/_common_fields.html

@@ -195,6 +195,10 @@
                             <div class="">
                                 {{ render_field(form.notification_format , class="notification-format") }}
                                 <span class="pure-form-message-inline">{{ _('Format for all notifications') }}</span>
+                                <div id="discord-html-format-warning" class="inline-warning" style="display: none; margin-top: 6px;">
+                                    <img class="inline-warning-icon" src="{{url_for('static_content', group='images', filename='notice.svg')}}" alt="{{ _('Note') }}" title="{{ _('Note') }}">
+                                    {{ _('Discord does not render HTML — switch to') }} <strong>{{ _('Plain Text') }}</strong> {{ _('format to avoid') }} <code>&amp;nbsp;</code> {{ _('and other HTML entities appearing literally in your notifications.') }}
+                                </div>
                             </div>
                         </div>
 {% endmacro %}