Restructure omni services and add Chatwoot research snapshot

research/chatwoot/lib/integrations/dialogflow/processor_service.rb

@@ -0,0 +1,101 @@
+require 'google/cloud/dialogflow/v2'
+
+class Integrations::Dialogflow::ProcessorService < Integrations::BotProcessorService
+  pattr_initialize [:event_name!, :hook!, :event_data!]
+
+  private
+
+  def message_content(message)
+    # TODO: might needs to change this to a way that we fetch the updated value from event data instead
+    # cause the message.updated event could be that that the message was deleted
+
+    return message.content_attributes['submitted_values']&.first&.dig('value') if event_name == 'message.updated'
+
+    message.content
+  end
+
+  def get_response(session_id, message_content)
+    if hook.settings['credentials'].blank?
+      Rails.logger.warn "Account: #{hook.try(:account_id)} Hook: #{hook.id} credentials are not present." && return
+    end
+
+    configure_dialogflow_client_defaults
+    detect_intent(session_id, message_content)
+  rescue Google::Cloud::PermissionDeniedError => e
+    Rails.logger.warn "DialogFlow Error: (account-#{hook.try(:account_id)}, hook-#{hook.id}) #{e.message}"
+    hook.prompt_reauthorization!
+    hook.disable
+  end
+
+  def process_response(message, response)
+    fulfillment_messages = response.query_result['fulfillment_messages']
+    fulfillment_messages.each do |fulfillment_message|
+      content_params = generate_content_params(fulfillment_message)
+      if content_params['action'].present?
+        process_action(message, content_params['action'])
+      else
+        create_conversation(message, content_params)
+      end
+    end
+  end
+
+  def generate_content_params(fulfillment_message)
+    text_response = fulfillment_message['text'].to_h
+    content_params = { content: text_response[:text].first } if text_response[:text].present?
+    content_params ||= fulfillment_message['payload'].to_h
+    content_params
+  end
+
+  def create_conversation(message, content_params)
+    return if content_params.blank?
+
+    conversation = message.conversation
+    conversation.messages.create!(
+      content_params.merge(
+        {
+          message_type: :outgoing,
+          account_id: conversation.account_id,
+          inbox_id: conversation.inbox_id
+        }
+      )
+    )
+  end
+
+  def configure_dialogflow_client_defaults
+    ::Google::Cloud::Dialogflow::V2::Sessions::Client.configure do |config|
+      config.timeout = 10.0
+      config.credentials = hook.settings['credentials']
+      config.endpoint = dialogflow_endpoint
+    end
+  end
+
+  def normalized_region
+    region = hook.settings['region'].to_s.strip
+    (region.presence || 'global')
+  end
+
+  def dialogflow_endpoint
+    region = normalized_region
+    return 'dialogflow.googleapis.com' if region == 'global'
+
+    "#{region}-dialogflow.googleapis.com"
+  end
+
+  def detect_intent(session_id, message)
+    client = ::Google::Cloud::Dialogflow::V2::Sessions::Client.new
+    session = build_session_path(session_id)
+    query_input = { text: { text: message, language_code: 'en-US' } }
+    client.detect_intent session: session, query_input: query_input
+  end
+
+  def build_session_path(session_id)
+    project_id = hook.settings['project_id']
+    region = normalized_region
+
+    if region == 'global'
+      "projects/#{project_id}/agent/sessions/#{session_id}"
+    else
+      "projects/#{project_id}/locations/#{region}/agent/sessions/#{session_id}"
+    end
+  end
+end