Merge pull request #374 from cs169/187436622-commercials-embed-snap

187436622 commercials embed snap

app/controllers/admin/commercials_controller.rb

@@ -90,7 +90,9 @@ def aggregate_errors(errors)
     end
 
     def commercial_params
-      params.require(:commercial).permit(:title, :url)
+      params.require(:commercial).permit(:title, :url).tap do |params|
+        params[:url] = Commercial.generate_snap_embed(params[:url]) if params[:url]
+      end
     end
   end
 end

app/models/commercial.rb

@@ -30,6 +30,7 @@ class Commercial < ApplicationRecord
 
   def self.render_from_url(url)
     register_provider
+    url = Commercial.generate_snap_embed(url)
     begin
       resource = OEmbed::Providers.get(url, maxwidth: 560, maxheight: 315)
       { html: resource.html.html_safe }
@@ -39,6 +40,38 @@ def self.render_from_url(url)
     end
   end
 
+  def self.generate_snap_embed(url)
+    return url unless url
+
+    uri = URI.parse(url)
+    if uri.host == 'snap.berkeley.edu' && uri.path == '/project'
+      args = URI.decode_www_form(uri.query).to_h
+    else
+      return url
+    end
+    if args.key?('username') && args.key?('projectname')
+      new_query = URI.encode_www_form({
+                                        'projectname' => args['projectname'],
+                                        'username'    => args['username'],
+                                        'showTitle'   => 'true',
+                                        'showAuthor'  => 'true',
+                                        'editButton'  => 'true',
+                                        'pauseButton' => 'true'
+                                      })
+      new_uri = URI::HTTPS.build(
+        host:  uri.host,
+        path:  '/embed',
+        query: new_query
+      )
+      return new_uri.to_s
+    end
+    url
+  end
+
+  def self.iframe_fallback(url)
+    "<iframe width=560 height=315 frameborder=0 allowfullscreen=true src=\"#{url}\"></iframe>".html_safe
+  end
+
   def self.read_file(file)
     require 'csv'
     errors = {}

spec/models/commercial_spec.rb

@@ -29,4 +29,11 @@
     commercial = build(:conference_commercial)
     expect(commercial.valid?).to be true
   end
+
+  it 'parses snap url' do
+    url = 'https://snap.berkeley.edu/project?username=avi_shor&projectname=stamps'
+    transformed_url = Commercial.generate_snap_embed(url)
+    expected_url = 'https://snap.berkeley.edu/embed?projectname=stamps&username=avi_shor&showTitle=true&showAuthor=true&editButton=true&pauseButton=true'
+    expect(transformed_url).to eq expected_url
+  end
 end