mastodon/app/lib/admin/system_check/elasticsearch_check.rb

# frozen_string_literal: true

class Admin::SystemCheck::ElasticsearchCheck < Admin::SystemCheck::BaseCheck
  def skip?
    !current_user.can?(:view_devops)
  end

  def pass?
    return true unless Chewy.enabled?

    running_version.present? && compatible_version?
  end

  def message
    if running_version.present?
      Admin::SystemCheck::Message.new(
        :elasticsearch_version_check,
        I18n.t(
          'admin.system_checks.elasticsearch_version_check.version_comparison',
          running_version: running_version,
          required_version: required_version
        )
      )
    else
      Admin::SystemCheck::Message.new(:elasticsearch_running_check)
    end
  end

  private

  def running_version
    @running_version ||= begin
      Chewy.client.info['version']['number']
    rescue Faraday::ConnectionFailed, Elasticsearch::Transport::Transport::Error
      nil
    end
  end

  def compatible_wire_version
    Chewy.client.info['version']['minimum_wire_compatibility_version']
  end

  def required_version
    '7.x'
  end

  def compatible_version?
    return false if running_version.nil?

    Gem::Version.new(running_version) >= Gem::Version.new(required_version) ||
      Gem::Version.new(compatible_wire_version) >= Gem::Version.new(required_version)
  end
end