# 
# Copyright 2019 Ken Spencer / IotaSpencer
#
# 
# File: ${FILENAME}
# Created: 3/14/19
#
# License is in project root, MIT License is in use.
require 'cloudflare_client'
require 'yaml'
require 'pathname'
require 'public_suffix'

module Certflare
  class Authenticator
    def initialize
      @cfg         = YAML.load_file(Pathname.new('/etc/').join('certflare'))
      @api_key     = @cfg['dns_cloudflare_api_key']
      @email       = @cfg['dns_cloudflare_email']
      @domain     = ENV['CERTBOT_DOMAIN']
      @validation = ENV['CERTBOT_VALIDATION']
      @main_domain = PublicSuffix.domain(@domain)
      zone      = CloudflareClient::Zone.new(auth_key: @api_key, email: @email).zones(name: @main_domain)
      @zone_id = zone[:result][0][:id]

    end
    def create_txt_record
      domain_with_prefix = "_acme-challenge.#{@domain}"
      # puts "record name: #{domain_with_prefix}"
      dns_records = CloudflareClient::Zone::DNS.new(zone_id: @zone_id, auth_key: @api_key, email: @email)
      record      = dns_records.create(name: domain_with_prefix, type: 'TXT', content: @validation, ttl: 120)
      @record_id = record[:result][:id]
      # puts "record id: #{@@record_id}"
    end

    def create_cleanup
      domain_dir = Pathname.new("/etc/").join("tmp", "CERTBOT_#{@domain}")
      # puts "domain dir: #{domain_dir}"
      unless domain_dir.exist?
        Dir.mkdir(domain_dir, 0700)
      end
      zone_id_file   = domain_dir.join('ZONE_ID')
      record_id_file = domain_dir.join('RECORD_ID')
      File.open(zone_id_file, 'w') do |f|
        f.print(@zone_id)
      end
      File.open(record_id_file, 'w') do |f|
        f.print(@record_id)
      end
      # puts <<~HEREDOC
      #  details for #{zone_id_file.to_s}
      #  writable? #{File.writable?(zone_id_file)}
      #  readable? #{File.readable?(zone_id_file)}
      #HEREDOC
      #puts <<~HEREDOC
      #  details for #{record_id_file.to_s}
      #  writable? #{File.writable?(record_id_file)}
      #  readable? #{File.readable?(record_id_file)}
      #HEREDOC
    end
  end


end