Allow the mautrix whatsapp relaybot to be enabled with a variable (#2381)

* Allow the mautrix whatsapp relaybot to be enable with a variable

This allows a user to enable the relaybot by setting a variable in
`vars.yml` in the same way that the mautrix signal relaybot is
configured.

* Correct default values for mautrix whatsapp relaybot variables

* Add documentation for using the relaybot with mautrix whatsapp

* Adjust variable names to better reflect what they do

* Set default variables properly and use to_json in template

roles/custom/matrix-bridge-mautrix-whatsapp/defaults/main.yml

@@ -102,6 +102,12 @@ matrix_mautrix_whatsapp_bridge_permissions: |
     | combine({matrix_admin: 'admin'} if matrix_admin else {})
   }}
 
+# Enable bridge relay functionality
+matrix_mautrix_whatsapp_bridge_relay_enabled: false
+
+# Only allow admins on this home server to set themselves as a relay user
+matrix_mautrix_whatsapp_bridge_relay_admin_only: true
+
 # Default mautrix-whatsapp configuration template which covers the generic use case.
 # You can customize it by controlling the various variables inside it.
 #

roles/custom/matrix-bridge-mautrix-whatsapp/templates/config.yaml.j2

@@ -396,9 +396,9 @@ bridge:
     relay:
         # Whether relay mode should be allowed. If allowed, `!wa set-relay` can be used to turn any
         # authenticated user into a relaybot for that chat.
-        enabled: false
+        enabled: {{ matrix_mautrix_whatsapp_bridge_relay_enabled | to_json }}
         # Should only admins be allowed to set themselves as relay users?
-        admin_only: true
+        admin_only: {{ matrix_mautrix_whatsapp_bridge_relay_admin_only | to_json }}
         # The formats to use when sending messages to WhatsApp via the relaybot.
         message_formats:
             m.text: "<b>{{ '{{ .Sender.Displayname }}' }}</b>: {{ '{{ .Message }}' }}"