fyntech/fyntech

require 'meetup_client'

module MeetupFetcher
 class Generator < Jekyll::Generator
    def convertDate(date, offset)
        dateWithOffset = date + offset
        convertedDate = "#{DateTime.strptime(dateWithOffset.to_s,'%Q').strftime('%Y-%m-%d %H:%M:%S')} #{@@timezone}"
        return convertedDate
    end

    def getMeetUpGroupEvents(group)
        maxRetryTimeout = 50
        initialRetries = 5
        begin
            retries ||= initialRetries
            return @meetup_api.events({ group_urlname: group })
        rescue Exception => e
            if retries > 0
                sleepTimeout = maxRetryTimeout - (maxRetryTimeout / initialRetries * retries)
                Jekyll.logger.warn("Warning:", "The MeetupApi failed for \"#{group}\" retrying #{retries} times before giving up… Sleeping for #{sleepTimeout} seconds")
                sleep(sleepTimeout)
                retries -= 1
                retry
            else
                Jekyll.logger.error("Error:", "No more retries left, we're going down 💥")
                raise
            end
        end
    end

    def generateEventDocument(event)
        doc = Jekyll::Document.new('', :site => @site, :collection => @collection)
        doc.data['title'] = event['name']
        doc.data['dateStart'] = convertDate(event['time'],event['utc_offset'])
        if event['duration']
            doc.data['dateEnd'] = convertDate(event['time']+event['duration'],event['utc_offset'])
        end
        if event['venue']
            doc.data['location'] = "#{event['venue']['name']}<br>#{event['venue']['address_1']}"
        end
        doc.data['link'] = event['event_url']
        doc.data['organizer'] = event['group']['name']
        doc.data['category'] = event['group']['name'].downcase.gsub(/\s+|[():]/, "")
        doc.data['excerpt'] = event['description']
        return doc
    end

    def generate(site)
        @site = site
        @collection = @site.collections["events"]

        MeetupClient.configure do |config|
          keyPath = "#{@site.source}/meetup_api_key"
          config.api_key = ENV['MEETUP_API_KEY'] || File.file?(keyPath) && File.read(keyPath) || return
        end

        @meetup_api = MeetupApi.new

        @@meetup_groups.each do |organizer|
            events = getMeetUpGroupEvents(organizer)
            next if !events.has_key?('results')
                
            events['results'].each do |event|
                doc = generateEventDocument(event)
                @collection.docs << doc
            end
        end
    end
    @@timezone = Jekyll.configuration({})['timezone']
    @@meetup_groups = Jekyll.configuration({})['meetup_groups']
  end
end