Class: Vanity::Source::Backtweets

Inherits:
Object
  • Object
show all
Includes:
Vanity::Source
Defined in:
lib/vanity/sources/backtweets.rb

Overview

Track Twitter links using the Backtype API.

Instance Method Summary collapse

Methods included from Vanity::Source

all, #description, #display, find, included, load_sources, #name, #register, #unregister

Instance Method Details

#meta(context) ⇒ Object 



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# File 'lib/vanity/sources/backtweets.rb', line 54

def meta(context)
  [ { :text=>"Search yourself", :url=>"http://backtweets.com/search?q=#{URI.escape context["url"]}" } ]
end

#setup(context, params) ⇒ Object 



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# File 'lib/vanity/sources/backtweets.rb', line 7

def setup(context, params)
  url = params["url"].strip.downcase.sub(/^http(s?):\/\//, "")
  context["metric.name"] = "Tweets for #{url}"
  context["metric.columns"] = [{ :id=>"tweets", :label=>"Tweets" }]
  context["metric.totals"] = true
  context["url"] = url
end

#update(context, webhook, &block) ⇒ Object 



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# File 'lib/vanity/sources/backtweets.rb', line 19

def update(context, webhook, &block)
  Net::HTTP.start "backtweets.com" do |http|
    get = Net::HTTP::Get.new("/search.json?key=#{api_key}&q=#{Rack::Utils.escape context["url"]}")
    response = http.request(get)
    json = JSON.parse(response.body) rescue nil if Net::HTTPOK === response
    unless json
      logger.error "Backtweets: #{response.code} #{response.message}"
      raise "Last request didn't go as expected, trying again later"
    end
   
    if tweets = json["tweets"]
      last_tweet_id = context["last_tweet_id"]
      if last_tweet_id
        new_ones = tweets.take_while { |tweet| tweet["tweet_id"] != last_tweet_id }.reverse
        new_ones.each do |tweet|
          handle, id = tweet["tweet_from_user"], tweet["tweet_id"]
          url = "http://twitter.com/#{handle}/#{id}"
          html = <<-HTML
<a href="#{url}">tweeted</a>:
<blockquote>#{tweet["tweet_text"]}</blockquote>
          HTML
          person = { :fullname=>handle, :identities=>%W{twitter.com:#{handle}}, :photo_url=>tweet["tweet_profile_image_url"] }
          block.call :activity=>{ :uid=>id, :url=>url, :html=>html, :tags=>%w{twitter mention},
                                  :timestamp=>Time.parse(tweet["tweet_created_at"]).utc, :person=>person }
        end
      end
      if recent = tweets.first
        context["last_tweet_id"] = recent["tweet_id"]
      end
    end

    block.call :set=>{ :tweets=>json["totalresults"].to_i }
  end
end

#validate(context) ⇒ Object 



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# File 'lib/vanity/sources/backtweets.rb', line 15

def validate(context)
  raise "Missing URL" if context["url"].blank?
end