# frozen_string_literal: true

module Sidekiq
  class JobLogger
    def initialize(logger = Sidekiq.logger)
      @logger = logger
    end

    def call(item, queue)
      start = ::Process.clock_gettime(::Process::CLOCK_MONOTONIC)
      @logger.info("start")

      yield

      with_elapsed_time_context(start) do
        @logger.info("done")
      end
    rescue Exception
      with_elapsed_time_context(start) do
        @logger.info("fail")
      end

      raise
    end

    def prepare(job_hash, &block)
      level = job_hash["log_level"]
      if level
        @logger.log_at(level) do
          Sidekiq::Context.with(job_hash_context(job_hash), &block)
        end
      else
        Sidekiq::Context.with(job_hash_context(job_hash), &block)
      end
    end

    def job_hash_context(job_hash)
      # If we're using a wrapper class, like ActiveJob, use the "wrapped"
      # attribute to expose the underlying thing.
      h = {
        class: job_hash["wrapped"] || job_hash["class"],
        jid: job_hash["jid"],
      }
      h[:bid] = job_hash["bid"] if job_hash["bid"]
      h[:tags] = job_hash["tags"] if job_hash["tags"]
      h
    end

    def with_elapsed_time_context(start, &block)
      Sidekiq::Context.with(elapsed_time_context(start), &block)
    end

    def elapsed_time_context(start)
      {elapsed: elapsed(start).to_s}
    end

    private

    def elapsed(start)
      (::Process.clock_gettime(::Process::CLOCK_MONOTONIC) - start).round(3)
    end
  end
end
