tumblr: add tumblr api client.

Gemfile

@@ -45,6 +45,7 @@ gem 'daemons'
 gem 'oauth2'
 gem 'bootsnap'
 gem 'addressable'
+gem 'httparty'
 
 # needed for looser jpeg header compat
 gem 'ruby-imagespec', :require => "image_spec", :git => "https://github.com/r888888888/ruby-imagespec.git", :branch => "exif-fixes"

Gemfile.lock

@@ -166,6 +166,8 @@ GEM
       domain_name (~> 0.5)
     http-form_data (1.0.2)
     http_parser.rb (0.6.0)
+    httparty (0.15.5)
+      multi_xml (>= 0.5.2)
     httpclient (2.8.0)
     hurley (0.2)
     i18n (0.8.1)
@@ -412,6 +414,7 @@ DEPENDENCIES
   gctools
   google-api-client
   highline
+  httparty
   mechanize
   memcache-client
   memcache_mock

app/logical/tumblr_api_client.rb

@@ -0,0 +1,9 @@
+class TumblrApiClient < Struct.new(:api_key)
+  include HTTParty
+  base_uri "https://api.tumblr.com/v2/blog/"
+
+  def posts(blog_name, post_id)
+    response = self.class.get("/#{blog_name}/posts", query: { id: post_id, api_key: api_key })
+    response.parsed_response.with_indifferent_access[:response]
+  end
+end