# frozen_string_literal: true

module ImageProcessing
  class Instrumentation
    def self.instrument(operation:)
      return yield if !SiteSetting.instrument_image_processing

      validate_operation!(operation)
      started_at = Process.clock_gettime(Process::CLOCK_MONOTONIC)
      success = false

      begin
        result = yield
        success = true
        result
      ensure
        duration_seconds = Process.clock_gettime(Process::CLOCK_MONOTONIC) - started_at
        record(operation:, duration_seconds:, success:)
      end
    end

    def self.record(operation:, duration_seconds:, success:)
      DiscourseEvent.trigger(
        :image_processing_finished,
        { operation: operation.to_s, duration_seconds:, success: },
        continue_on_error: true,
      )
    end
    private_class_method :record

    def self.validate_operation!(operation)
      raise ArgumentError, "operation must be a Symbol" if !operation.is_a?(Symbol)
    end
    private_class_method :validate_operation!
  end
end