# frozen_string_literal: true

require_relative 'csp_maker/csp'
require_relative 'csp_maker/version'

require 'securerandom'

module CSPMaker
  class << self
    attr_accessor :report_only, :nonce_generator, :nonce_directives

    def build_policy(context = nil, &block)
      raise ArgumentError, "block required" unless block_given?

      policy = define_policy(&block)
      policy.build(context)
    end

    def define_policy(&block)
      raise ArgumentError, "block required" unless block_given?

      policy = ContentSecurityPolicy.new

      if block.parameters.empty?
        policy.instance_eval(&block)
      else
        block.call(policy)
      end

      policy
    end

    def default_generator
      proc { SecureRandom.base64(16) }
    end

    def make_nonce
      nonce_generator.call
    end
  end
end