Option for default presentations

app/controllers/bigbluebutton_api_controller.rb

@@ -212,6 +212,9 @@ def create
       # Read the body if POST
       body = request.post? ? request.body.read : ''
 
+      # Override body with default presentations if empty
+      body = generate_default_presentations unless body != ''
+
       # Send a GET/POST request to the server
       response = get_post_req(uri, body, **bbb_req_timeout(server))
     rescue BBBError

app/controllers/concerns/api_helper.rb

@@ -217,3 +217,19 @@ def add_additional_params(action, bbb_params)
     final_params
   end
 end
+
+def generate_default_presentations
+  return '' if Rails.configuration.x.default_presentations.empty?
+  doc = Nokogiri::XML('<modules></modules>')
+  module_pres = Nokogiri::XML::Node.new("module", doc)
+  module_pres['name'] = "presentation"
+
+  Rails.configuration.x.default_presentations.each { |x|
+    document = Nokogiri::XML::Node.new("document", doc)
+    document['url'] = x[0]
+    document['filename'] = x[1]
+    module_pres << document
+  }
+  doc.root << module_pres
+  doc.to_xml
+end

config/application.rb

@@ -138,6 +138,8 @@ class Application < Rails::Application
 
     config.i18n.default_locale = ENV.fetch('DEFAULT_LOCALE', 'en')
 
+    config.x.default_presentations = ENV.fetch('DEFAULT_PRESENTATIONS', '').split(",").collect { |x| x.split('->') }
+
     # Comma separated list of create params that can be overridden by the client
     config.x.default_create_params = ENV.fetch('DEFAULT_CREATE_PARAMS', '')
                                         .split(',').to_h { |param| param.split('=', 2) }.symbolize_keys

docs/configuration-README.md

@@ -59,6 +59,7 @@ These variables are used by the service startup scripts in the Docker images, bu
 * `OVERRIDE_CREATE_PARAMS`: Sets a list of params on the create call that CANNOT be overridden by the client/requester. Should be in the format 'OVERRIDE_CREATE_PARAMS=param1=param1value,param2=param2value'
 * `DEFAULT_JOIN_PARAMS`: Sets a list of default params on the join call that CAN be overridden by the client/requester. Should be in the format 'DEFAULT_JOIN_PARAMS=param1=param1value,param2=param2value'
 * `OVERRIDE_JOIN_PARAMS`: Sets a list of  params on the create call that CANNOT be overridden by the client/requester. Should be in the format 'OVERRIDE_JOIN_PARAMS=param1=param1value,param2=param2value'
+* `DEFAULT_PRESENTATIONS`: Sets a list of default presentations on the create call. Will only trigger when a GET-request is used, otherwise the supplied body will be used. Should be in the format 'DEFAULT_PRESENTATIONS=http://presurl->presname.pdf,http://presurl2->presname2.pdf'
 * `GET_RECORDINGS_API_FILTERED`: Prevent get_recordings api from returning all recordings when recordID is not specified in the request, by setting value to 'true'. Defaults to false.
 * `PREPARED_STATEMENT`: Enable/Disable Active Record prepared statements feature, can be disabled by setting the value as `false`. Defaults to `true`.
 * `DB_CONNECTION_RETRY_COUNT`: The number of times db connection retries will be attempted, in case of a db connection failure. Defaults to `3`.