class Airbrake::Config::Validator

def check_notify_ability(config)
  promise = Airbrake::Promise.new
  unless config.error_notifications
    return promise.reject('error notifications are disabled')
  end
  if ignored_environment?(config)
    return promise.reject(
      "current environment '#{config.environment}' is ignored",
    )
  end
  promise.resolve(:ok)
end

def ignored_environment?(config)
  if config.ignore_environments.any? && config.environment.nil?
    config.logger.warn(
      "#{LOG_LABEL} the 'environment' option is not set, " \
      "'ignore_environments' has no effect",
    )
  end
  return false if config.ignore_environments.none? || !config.environment
  env = config.environment.to_s
  config.ignore_environments.any? do |pattern|
    pattern.is_a?(Regexp) ? env.match(pattern) : env == pattern.to_s
  end
end

def valid_environment?(config)
  VALID_ENV_TYPES.any? { |type| config.environment.is_a?(type) }
end

def valid_project_id?(config)
  return true if config.project_id.to_i > 0
  false
end

def valid_project_key?(config)
  return false unless config.project_key.is_a?(String)
  return false if config.project_key.empty?
  true
end

def validate(config)
  promise = Airbrake::Promise.new
  unless valid_project_id?(config)
    return promise.reject(':project_id is required')
  end
  unless valid_project_key?(config)
    return promise.reject(':project_key is required')
  end
  unless valid_environment?(config)
    return promise.reject(
      "the 'environment' option must be configured " \
      "with a Symbol (or String), but '#{config.environment.class}' was " \
      "provided: #{config.environment}",
    )
  end
  promise.resolve(:ok)
end