slapos_crm: WIP support event's attachment

master/bt5/slapos_crm/SkinTemplateItem/portal_skins/slapos_crm_monitoring/Ticket_createProjectEvent.py

 """Generic script to add event
 It creates new Event for any context which become follow_up of created Event.
 """
+from erp5.component.tool.NotificationTool import buildEmailMessage
+
 portal = context.getPortalObject()
 ticket = context
+REQUEST = context.REQUEST
+
+# Max ~3Mb
+if int(REQUEST.getHeader('Content-Length', 0)) > 3145728:
+  raise ValueError('Huge attachment is not supported')
+
+# Create a mail message to allow attachment in the event
+attachment_list = []
+if attachment:
+  # Build dict wrapper for NotificationTool
+  mime_type = attachment.headers.get('Content-Type', '')
+  content = attachment.read()
+  name = getattr(attachment, 'filename', None)
+  attachment = dict(mime_type=mime_type,
+                    content=content,
+                    name=name)
+  attachment_list.append(attachment)
+
+email = buildEmailMessage(from_url=None,
+                          to_url=None,
+                          msg=text_content,
+                          subject=title,
+                          attachment_list=attachment_list)
 
 if direction == 'outgoing':
   source_relative_url = source or ticket.getSource()
@@ -21,6 +46,9 @@ elif direction == 'incoming':
 else:
   raise NotImplementedError('The specified direction is not handled: %r' % (direction,))
 
+if (notification_message is not None) and (attachment is not None):
+  raise ValueError('Can not add attachment to a notification message')
+
 event_kw = {
   'portal_type': portal_type,
   'resource': resource,
@@ -33,7 +61,7 @@ event_kw = {
   'start_date': DateTime(),
   'follow_up_value': ticket,
   'language': language,
-  'text_content': text_content,
+  'data': email.as_string(),
   'content_type': content_type,
   }
 # Create event

master/bt5/slapos_crm/SkinTemplateItem/portal_skins/slapos_crm_monitoring/Ticket_createProjectEvent.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>title, direction, portal_type, resource, text_content, content_type, notification_message=None, substitution_method_parameter_dict=None, keep_draft=False, source=None, destination=None, language=None, comment=None, **kw</string> </value>
+            <value> <string>title, direction, portal_type, resource, text_content, content_type, attachment=None, notification_message=None, substitution_method_parameter_dict=None, keep_draft=False, source=None, destination=None, language=None, comment=None, **kw</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>