pass sharer_message and put it in a box

Author: odeimaiz

packages/notifications-library/src/notifications_library/templates/on_share_project.email.content.html

@@ -5,13 +5,21 @@
 
 <p>Great news! {{ sharer_username }} has shared a {{ resource_alias }} with you on {{ product.display_name }}.</p>
 
-<p>To view the {{ resource_alias }} and accept the sharing, simply click the button below:</p>
+<p>To view the {{ resource_alias }} and accept the sharing, follow below:</p>
 
 <p>
-  <!-- Many email clients strip or ignore certain CSS properties, including them inline -->
+{% if sharer_message %}
+  <div style="border: 1px solid #ccc; padding: 16px; border-radius: 8px; background-color: #f9f9f9;">
+    <p style="margin-top: 0;">{{ sharer_message }}</p>
+    <button class="strong-button" style="border-radius: 4px;">
+      <a href="{{ accept_link }}" style="color: white;">Open</a>
+    </button>
+  </div>
+{% else %}
   <button class="strong-button" style="border-radius: 4px;">
     <a href="{{ accept_link }}" style="color: white;">Open</a>
   </button>
+{% endif %}
 </p>
 
 <p>Please don't hesitate to contact us at {{ product.support_email }} if you need further help.</p>

packages/notifications-library/src/notifications_library/templates/on_share_project.email.content.txt

@@ -2,8 +2,9 @@ Dear {{ user.first_name }},
 
 Great news! {{ sharer_username }} has shared a {{ resource_alias }} with you on {{ product.display_name }}.
 
-To view the {{ resource_alias }} and accept the sharing, simply click the link below:
+To view the {{ resource_alias }} and accept the sharing, follow below:
 
+{{ sharer_message }}
 {{ accept_link }}
 
 Please don't hesitate to contact us at {{ product.support_email }} if you need further help.

packages/notifications-library/tests/email/test_email_events.py

@@ -140,6 +140,7 @@ def event_extra_data(  # noqa: PLR0911
                 "host": host_url,
                 "resource_alias": "Project",
                 "sharer_username": "sharer_username",
+                "sharer_message": faker.paragraph(nb_sentences=2),
                 "accept_link": f"{host_url}?code={code}",
             }
         case "on_unregister":