module ZuoraConnect

def self.configuration
  @configuration ||= Configuration.new
end

def self.configure
  yield(configuration)
  ::Apartment.excluded_models << "Delayed::Job" if configuration.delayed_job
  ::Apartment.excluded_models.concat(configuration.additional_apartment_models) if configuration.additional_apartment_models.class == Array
  return configuration
end

def self.elastic_apm_defaults
  defaults = {}
  case Rails.env.to_s
  when 'production'
    defaults = {
      server_url: "http://apm-server.logging:8200",
      transaction_sample_rate: 0.20,
      capture_body: 'errors'
    }
  when 'staging'
    defaults = {
      server_url: "http://apm-server.logging:8200",
      transaction_sample_rate: 1.0
    }
  when 'development'
    defaults = {
      server_url: "http://logging.0.ecc.auw2.zuora:8200",
      transaction_sample_rate: 1.0
    }
  when 'test'
    defaults = {
      active: false,
      disable_send: true
    }
  end
  defaults.merge!({
    disable_start_message: true,
    pool_size: 1,
    transaction_max_spans: 500,
    ignore_url_patterns: ['^\/admin\/resque.*', '^\/admin\/redis.*', '^\/admin\/peek.*', '^\/peek.*'],
    verify_server_cert: false,
    log_level: Logger::INFO,
    service_name: ENV['DEIS_APP'].present? ? ENV['DEIS_APP'] : Rails.application.class.parent_name,
    logger: ZuoraConnect.custom_logger(name: "ElasticAPM", level: MonoLogger::WARN)
  })
  defaults.merge!({disable_send: true}) if defined?(Rails::Console)
  return defaults
end

def self.reset
  @configuration = Configuration.new
end

def custom_logger(name: "", level: Rails.logger.present? ? Rails.logger.level : MonoLogger::INFO, type: :ougai)
  #puts name + ' - ' + {Logger::WARN => 'Logger::WARN', Logger::ERROR => 'Logger::ERROR', Logger::DEBUG => 'Logger::DEBUG', Logger::INFO => 'Logger::INFO' }[level] + ' - '
  if type == :ougai
    require 'ougai'
    require "ougai/formatters/customizable"
    #logger = Ougai::Logger.new(MonoLogger.new(STDOUT))
    logger = Ougai::Logger.new(STDOUT)
    logger.level = level
    if ZuoraConnect.configuration.json_logging
      logger.formatter = Ougai::Formatters::ConnectFormatter.new(name)
      logger.before_log = lambda do |data|
        data[:trace_id] = ZuoraConnect::RequestIdMiddleware.request_id if ZuoraConnect::RequestIdMiddleware.request_id.present?
        data[:zuora_trace_id] = ZuoraConnect::RequestIdMiddleware.zuora_request_id if ZuoraConnect::RequestIdMiddleware.zuora_request_id.present?
        #data[:traces] = {amazon_id: data[:trace_id], zuora_id: data[:zuora_trace_id]}
      end
    else
      logger.formatter = Ougai::Formatters::Customizable.new(
        format_err: proc do |data|
          next nil unless data.key?(:err)
          err = data.delete(:err)
          "  #{err[:name]} (#{err[:message]})\n #{err[:stack]}"
        end,
        format_data: proc do |data|
          data.delete(:app_instance_id); data.delete(:tenant_ids); data.delete(:organization); data.delete(:environment)
          format('%s %s: %s', 'DATA'.ljust(6), Time.now.strftime('%FT%T.%6NZ'), "#{data.to_json}") if data.present?
        end,
        format_msg: proc do |severity, datetime, _progname, data|
          msg = data.delete(:msg)
          format('%s %s: %s', severity.ljust(6), datetime, msg)
        end
      )
      logger.formatter.datetime_format = '%FT%T.%6NZ'
    end
  else
    logger = MonoLogger.new(STDOUT)
    logger.level = level
    logger.formatter =  proc do |serverity, datetime, progname, msg|
      begin
        msg = JSON.parse(msg)
      rescue JSON::ParserError => ex
      end
      if ZuoraConnect.configuration.json_logging
        require 'json'
        store = {
          name: name,
          level: serverity,
          timestamp: datetime.strftime('%FT%T.%6NZ'),
          pid: Process.pid,
          message: name == "ActionMailer" ? msg.strip : msg
        }
        JSON.dump(store) + "\n"
      else
        format('%s %s: %s', serverity.ljust(6), datetime, msg) + "\n"
      end
    end
  end
  return logger
end

def logger
  case Rails.env.to_s
  when 'development'
    Rails.logger
  else
    @logger ||= custom_logger(name: "Connect", level: Rails.logger.level)
  end
end