Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/controllers/concerns/request_exception_handler.rb

@@ -0,0 +1,62 @@
+module RequestExceptionHandler
+  extend ActiveSupport::Concern
+
+  included do
+    rescue_from ActiveRecord::RecordInvalid, with: :render_record_invalid
+  end
+
+  private
+
+  def handle_with_exception
+    yield
+  rescue ActiveRecord::RecordNotFound => e
+    log_handled_error(e)
+    render_not_found_error('Resource could not be found')
+  rescue Pundit::NotAuthorizedError => e
+    log_handled_error(e)
+    render_unauthorized('You are not authorized to do this action')
+  rescue ActionController::ParameterMissing => e
+    log_handled_error(e)
+    render_could_not_create_error(e.message)
+  ensure
+    # to address the thread variable leak issues in Puma/Thin webserver
+    Current.reset
+  end
+
+  def render_unauthorized(message)
+    render json: { error: message }, status: :unauthorized
+  end
+
+  def render_not_found_error(message)
+    render json: { error: message }, status: :not_found
+  end
+
+  def render_could_not_create_error(message)
+    render json: { error: message }, status: :unprocessable_entity
+  end
+
+  def render_payment_required(message)
+    render json: { error: message }, status: :payment_required
+  end
+
+  def render_internal_server_error(message)
+    render json: { error: message }, status: :internal_server_error
+  end
+
+  def render_record_invalid(exception)
+    log_handled_error(exception)
+    render json: {
+      message: exception.record.errors.full_messages.join(', '),
+      attributes: exception.record.errors.attribute_names
+    }, status: :unprocessable_entity
+  end
+
+  def render_error_response(exception)
+    log_handled_error(exception)
+    render json: exception.to_hash, status: exception.http_status
+  end
+
+  def log_handled_error(exception)
+    logger.info("Handled error: #{exception.inspect}")
+  end
+end