gdeglin/backend.rb Secret

## backend.rb
# This script runs every 5 minutes to send out Web Push
#  notifications to subscribers about trending stories on Hacker News

# Technologies used:
# HTML5 Push API (http://w3c.github.io/push-api/)
# OneSignal (Web Push Notification delivery and SDK)
# Algolia (Provider of an excellent hacker news Search API)
# Ruby, Redis, Sidekiq, Sidetiq

require 'redis'
require 'json'
require 'rest-client'

class DemoNotifications
  sidekiq_options :retry => false

  # We use a Sidekiq (A background worker service) with Sidetiq (A sidekiq plugin for scheduling jobs) to run this every 5 minutes
  include Sidekiq::Worker
  include Sidetiq::Schedulable
  recurrence { hourly.minute_of_hour(0,5,10,15,20,25,30,35,40,45,50,55) }

  def perform(last_occurrence, current_occurrence)
    return unless Rails.env == 'production'

    # We use redis to store and check if we've already delivered this story to subscribers
    redis = Redis.new

    # Fetch stories created within the last 24 hours with at least 250 points
    url = "https://hn.algolia.com/api/v1/search_by_date?numericFilters=points>=250,created_at_i>=#{Time.now.to_i - 60*60*24}"
    puts "Fetching new story @ `#{url}`."
    response = JSON.parse(RestClient.get(url))

    # Sort stories by how many points they have
    hits = response['hits'].sort_by { |h| h['points'] }

    count = 0
    hits.each do |hit|
      unless redis.exists('hnstory:'+hit['objectID']) # Don't send the story to subscribers if we've already sent it

        redis.setex('hnstory:'+hit['objectID'], 60*60*24*3, true) # Expire the data after a few days so we don't store it unnecessarily
        puts "New top story: `#{hit['title']}`."
        url = hit['url']
        url = "https://news.ycombinator.com/item?id=#{hit['objectID']}" if url.blank? # url is blank if it's a self post
        create_notification(
            hit['title'],
            "#{unixTimestampToRelativeTime(hit['created_at_i'])}, #{hit['points']} points, #{hit['num_comments']} comments",
            'https://onesignal.com/assets/demos/notification_ycombinator_logo.png',
            url
        )
        count +=1
      end
    end

    if (count == 0)
      puts 'No new top stories.'
    end
  end

  def create_notification(title, body, icon, url)
    params = {
        'app_id' => 'e3b80c8e-3b06-11e5-a05d-df3641e92340', # Our OneSignal App ID that visitors have subscribed to
        'contents' => {'en'=> body},
        'headings' => {'en'=> title},
        'isChromeWeb' => true,
        'included_segments' => ['All'],
        'chrome_web_icon' => icon,
        'url' => url
    }

    headers = {
        'Content-Type' => 'application/json',
        'Authorization' => 'Basic [secret]',  # OneSiganel Rest API secret key
    }

    begin
      # Use the OneSignal API to send the story to all subscribers!
      response = RestClient::Request.execute(
          method: :post,
          url: 'https://onesignal.com/api/v1/notifications',
          payload: params,
          headers: headers
      )

      puts "Send successful! \n\t #{response}"
    rescue => e
      puts e.inspect
    end
  end

  def unixTimestampToRelativeTime(timestamp)
    a = (Time.now-timestamp).to_i

    case a
      when 0 then
        'just now'
      when 1 then
        'a second ago'
      when 2..59 then
        a.to_s+' seconds ago'
      when 60..119 then
        'a minute ago' #120 = 2 minutes
      when 120..3540 then
        (a/60).to_i.to_s+' minutes ago'
      when 3541..7100 then
        'an hour ago' # 3600 = 1 hour
      when 7101..82800 then
        ((a+99)/3600).to_i.to_s+' hours ago'
      when 82801..172000 then
        'a day ago' # 86400 = 1 day
      when 172001..518400 then
        ((a+800)/(60*60*24)).to_i.to_s+' days ago'
      when 518400..1036800 then
        'a week ago'
      else
        ((a+180000)/(60*60*24*7)).to_i.to_s+' weeks ago'
    end
  end
end

## frontend.html
<head>
  <script src="https://onesignal.com/sdks/OneSignalSDK.js" async></script>
  <link rel="manifest" href="manifest.json">
  <script>
    var OneSignal = OneSignal || [];
    OneSignal.push(["init", {path: '/', appId: "[OneSignal App]", autoRegister: true}]);
  </script>
</head>
	# This script runs every 5 minutes to send out Web Push
	# notifications to subscribers about trending stories on Hacker News

	# Technologies used:
	# HTML5 Push API (http://w3c.github.io/push-api/)
	# OneSignal (Web Push Notification delivery and SDK)
	# Algolia (Provider of an excellent hacker news Search API)
	# Ruby, Redis, Sidekiq, Sidetiq

	require 'redis'
	require 'json'
	require 'rest-client'

	class DemoNotifications
	sidekiq_options :retry => false

	# We use a Sidekiq (A background worker service) with Sidetiq (A sidekiq plugin for scheduling jobs) to run this every 5 minutes
	include Sidekiq::Worker
	include Sidetiq::Schedulable
	recurrence { hourly.minute_of_hour(0,5,10,15,20,25,30,35,40,45,50,55) }

	def perform(last_occurrence, current_occurrence)
	return unless Rails.env == 'production'

	# We use redis to store and check if we've already delivered this story to subscribers
	redis = Redis.new

	# Fetch stories created within the last 24 hours with at least 250 points
	url = "https://hn.algolia.com/api/v1/search_by_date?numericFilters=points>=250,created_at_i>=#{Time.now.to_i - 606024}"
	puts "Fetching new story @ `#{url}`."
	response = JSON.parse(RestClient.get(url))

	# Sort stories by how many points they have
	hits = response['hits'].sort_by { \|h\| h['points'] }

	count = 0
	hits.each do \|hit\|
	unless redis.exists('hnstory:'+hit['objectID']) # Don't send the story to subscribers if we've already sent it

	redis.setex('hnstory:'+hit['objectID'], 606024*3, true) # Expire the data after a few days so we don't store it unnecessarily
	puts "New top story: `#{hit['title']}`."
	url = hit['url']
	url = "https://news.ycombinator.com/item?id=#{hit['objectID']}" if url.blank? # url is blank if it's a self post
	create_notification(
	hit['title'],
	"#{unixTimestampToRelativeTime(hit['created_at_i'])}, #{hit['points']} points, #{hit['num_comments']} comments",
	'https://onesignal.com/assets/demos/notification_ycombinator_logo.png',
	url
	)
	count +=1
	end
	end

	if (count == 0)
	puts 'No new top stories.'
	end
	end

	def create_notification(title, body, icon, url)
	params = {
	'app_id' => 'e3b80c8e-3b06-11e5-a05d-df3641e92340', # Our OneSignal App ID that visitors have subscribed to
	'contents' => {'en'=> body},
	'headings' => {'en'=> title},
	'isChromeWeb' => true,
	'included_segments' => ['All'],
	'chrome_web_icon' => icon,
	'url' => url
	}

	headers = {
	'Content-Type' => 'application/json',
	'Authorization' => 'Basic [secret]', # OneSiganel Rest API secret key
	}

	begin
	# Use the OneSignal API to send the story to all subscribers!
	response = RestClient::Request.execute(
	method: :post,
	url: 'https://onesignal.com/api/v1/notifications',
	payload: params,
	headers: headers
	)

	puts "Send successful! \n\t #{response}"
	rescue => e
	puts e.inspect
	end
	end

	def unixTimestampToRelativeTime(timestamp)
	a = (Time.now-timestamp).to_i

	case a
	when 0 then
	'just now'
	when 1 then
	'a second ago'
	when 2..59 then
	a.to_s+' seconds ago'
	when 60..119 then
	'a minute ago' #120 = 2 minutes
	when 120..3540 then
	(a/60).to_i.to_s+' minutes ago'
	when 3541..7100 then
	'an hour ago' # 3600 = 1 hour
	when 7101..82800 then
	((a+99)/3600).to_i.to_s+' hours ago'
	when 82801..172000 then
	'a day ago' # 86400 = 1 day
	when 172001..518400 then
	((a+800)/(606024)).to_i.to_s+' days ago'
	when 518400..1036800 then
	'a week ago'
	else
	((a+180000)/(606024*7)).to_i.to_s+' weeks ago'
	end
	end
	end
	<head>
	<script src="https://onesignal.com/sdks/OneSignalSDK.js" async></script>
	<link rel="manifest" href="manifest.json">
	<script>
	var OneSignal = OneSignal \|\| [];
	OneSignal.push(["init", {path: '/', appId: "[OneSignal App]", autoRegister: true}]);
	</script>
	</head>