added rake task and spec for absolutifying existing image links

lib/tasks/migrations.rake

@@ -33,4 +33,28 @@ namespace :migrations do
 
   desc 'execute mongo to mysql migration.  Requires mongoexport to be accessible.'
   task :migrate_to_mysql => [:export_for_mysql, :import_to_mysql]
+
+  desc 'absolutify all existing image references'
+  task :absolutify_image_references do
+    require File.join(Rails.root,"config/environment")
+
+    Photo.all.each do |photo|
+      # extract root
+      unless photo.image.url.match(/^https?:\/\//)
+
+        pod_url = photo.person.url
+        pod_url.chop! if pod_url[-1,1] == '/'
+        remote_path = "#{pod_url}#{photo.image.url}"
+      else
+        remote_path = photo.image.url
+      end
+
+      # get path/filename
+      name_start = remote_path.rindex '/'
+      photo.remote_photo_path = "#{remote_path.slice(0, name_start)}/"
+      photo.remote_photo_name = remote_path.slice(name_start + 1, remote_path.length)
+
+      photo.save!
+    end
+  end
 end

spec/lib/tasks/migrations_spec.rb

@@ -0,0 +1,50 @@
+#   Copyright (c) 2010, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3 or later.  See
+#   the COPYRIGHT file.
+
+require 'spec_helper'
+require File.join(Rails.root, 'lib/hcard')
+require "rake"
+
+describe 'migrations' do
+
+  describe 'absolutify_image_references' do
+    before do
+      @rake = Rake::Application.new
+      Rake.application = @rake
+      Rake.application.rake_require "lib/tasks/migrations", [Rails.root]
+      Rake::Task.define_task(:environment) {}
+
+      @fixture_filename  = 'button.png'
+      @fixture_name      = File.join(File.dirname(__FILE__), '..', '..', 'fixtures', @fixture_filename)
+
+      @photos = []
+
+      5.times do |n|
+        photo = Photo.instantiate(:user_file => File.open(@fixture_name))
+        photo.remote_photo_path = nil
+        photo.remote_photo_name = nil
+
+        photo.person = (n % 2 == 0 ? make_user.person : Factory(:person, :url => "https://remote.com/"))
+        @photos[n] = photo
+        @photos[n].save
+      end
+    end
+
+    it 'sets remote_photo_path and remote_photo_name' do
+      @rake['migrations:absolutify_image_references'].invoke
+
+      @photos.each do |photo|
+        photo.reload
+
+        photo.remote_photo_path.should be_true
+        photo.remote_photo_name.should be_true
+        photo.url.match(/$http.*jpg^/)
+      end
+
+      @photos[0].remote_photo_path.should include("http://google-")
+      @photos[1].remote_photo_path.should include("https://remote.com/")
+    end
+  end
+end
+