```ruby
require_relative 'jira_gateway'

module Lita
  module Handlers
    class JiraIssues < Handler

      def initialize(*args)
        super(args)
        @jira = JiraGateway.new(http, config)
      end

      def self.default_config(config)
        config.enabled = true
      end

      route /[a-zA-Z]+-\d+/, :jira_message, help: {
        "KEY-123" => "Replies with information about the given JIRA key"
      }

      def jira_message(response)
        unless configured?
          raise 'Need to configure url, username, password for jira_issues ' \
            'to work'
        end
        response.matches.each do | key |
          handle_key(response, key)
        end
      end

      def configured?
        config.url && config.username && config.password
      end

      def handle_key(response, key)
        data = @jira.data_for_issue(key)
        return if data.empty?
        response.reply "[#{data[:key]}] #{data[:fields][:summary]}"
      end
    end

    Lita.register_handler(JiraIssues)
  end
end
```

Refactor issue details into variable
user
```ruby
require_relative 'jira_gateway'

module Lita
  module Handlers
    class JiraIssues < Handler

      def initialize(*args)
        super(args)
        @jira = JiraGateway.new(http, config)
      end

      def self.default_config(config)
        config.enabled = true
      end

      route /[a-zA-Z]+-\d+/, :jira_message, help: {
        "KEY-123" => "Replies with information about the given JIRA key"
      }

      def jira_message(response)
        unless configured?
          raise 'Need to configure url, username, password for jira_issues ' \
            'to work'
        end
        response.matches.each do | key |
          handle_key(response, key)
        end
      end

      def configured?
        config.url && config.username && config.password
      end

      def handle_key(response, key)
        data = @jira.data_for_issue(key)
        return if data.empty?
        issue = "[#{data[:key]}] #{data[:fields][:summary]}"
        response.reply issue
      end
    end

    Lita.register_handler(JiraIssues)
  end
end
```
assistant