fix: Add support for named parameter templates in WhatsApp (#11198)

The expected payload on WhatsApp Cloud API is the following. 
```json
{ 
  "template": {
    "name": "TEMPLATE_NAME",
    "language": {
      "code": "LANGUAGE_AND_LOCALE_CODE"
    },
    "components": [
         "<NAMED_PARAMETER_INPUT>",
         "<POSITIONAL_PARAMETER_INPUT>"
     ]
  }
}
```
Named templates expect a `parameter_name`

```json
{
   "type": "body",
    "parameters": [
      {
        "type": "text",
        "parameter_name": "customer_name",
        "text": "John"
      },
      {
        "type": "text",
        "parameter_name": "order_id",
        "text": "9128312831"
      }        
    ]
}
```

In this PR, we would check if the template is a name template, then we
would send the `parameter_name` as well.

Reference: https://github.com/chatwoot/chatwoot/issues/10886

app/services/contacts/contactable_inboxes_service.rb

@@ -42,20 +42,20 @@ class Contacts::ContactableInboxesService
   end
 
   def email_contactable_inbox(inbox)
-    return unless @contact.email
+    return if @contact.email.blank?
 
     { source_id: @contact.email, inbox: inbox }
   end
 
   def whatsapp_contactable_inbox(inbox)
-    return unless @contact.phone_number
+    return if @contact.phone_number.blank?
 
     # Remove the plus since thats the format 360 dialog uses
     { source_id: @contact.phone_number.delete('+'), inbox: inbox }
   end
 
   def sms_contactable_inbox(inbox)
-    return unless @contact.phone_number
+    return if @contact.phone_number.blank?
 
     { source_id: @contact.phone_number, inbox: inbox }
   end

app/services/whatsapp/send_on_whatsapp_service.rb

@@ -28,14 +28,13 @@ class Whatsapp::SendOnWhatsappService < Base::SendOnChannelService
     message.update!(source_id: message_id) if message_id.present?
   end
 
-  # rubocop:disable Metrics/CyclomaticComplexity
   def processable_channel_message_template
     if template_params.present?
       return [
         template_params['name'],
         template_params['namespace'],
         template_params['language'],
-        template_params['processed_params']&.map { |_, value| { type: 'text', text: value } }
+        processed_templates_params(template_params)
       ]
     end
 
@@ -56,7 +55,6 @@ class Whatsapp::SendOnWhatsappService < Base::SendOnChannelService
     end
     [nil, nil, nil, nil]
   end
-  # rubocop:enable Metrics/CyclomaticComplexity
 
   def template_match_object(template)
     body_object = validated_body_object(template)
@@ -82,6 +80,25 @@ class Whatsapp::SendOnWhatsappService < Base::SendOnChannelService
     Regexp.new template_match_string
   end
 
+  def template(template_params)
+    channel.message_templates.find do |t|
+      t['name'] == template_params['name'] && t['language'] == template_params['language']
+    end
+  end
+
+  def processed_templates_params(template_params)
+    template = template(template_params)
+    return if template.blank?
+
+    parameter_format = template['parameter_format']
+
+    if parameter_format == 'NAMED'
+      template_params['processed_params']&.map { |key, value| { type: 'text', parameter_name: key, text: value } }
+    else
+      template_params['processed_params']&.map { |_, value| { type: 'text', text: value } }
+    end
+  end
+
   def validated_body_object(template)
     # we don't care if its not approved template
     return if template['status'] != 'approved'