# typed: false

module Datadog
  module Tracing
    module Contrib
      # Extensions for auto instrumentation added to the base library
      # AutoInstrumentation enables all integration
      module AutoInstrument
        def self.extended(base)
          base.extend(Patch)
        end

        # Patch adds method for invoking auto_instrumentation
        module Patch
          def add_auto_instrument
            super

            if Contrib::Rails::Utils.railtie_supported?
              require 'datadog/tracing/contrib/rails/auto_instrument_railtie'
            else
              AutoInstrument.patch_all
            end
          end
        end

        def self.patch_all
          integrations = []

          Contrib::REGISTRY.each do |integration|
            # some instrumentations are automatically enabled when the `rails` instrumentation is enabled,
            # patching them on their own automatically outside of the rails integration context would
            # cause undesirable service naming, so we exclude them based their auto_instrument? setting.
            # we also don't want to mix rspec/cucumber integration in as rspec is env we run tests in.
            next unless integration.klass.auto_instrument?

            integrations << integration.name
          end

          Datadog.configure do |c|
            c.reduce_log_verbosity
            # This will activate auto-instrumentation for Rails
            integrations.each do |integration_name|
              c.tracing.instrument integration_name
            end
          end
        end
      end
    end
  end
end