adds in geojson download type

app/controllers/download_controller.rb

@@ -27,6 +27,8 @@ def check_type
       response = ShapefileDownload.new(@document).get
     when 'kmz'
       response = KmzDownload.new(@document).get
+    when 'geojson'
+      response = GeojsonDownload.new(@document).get
     end
     response
   end

lib/geoblacklight.rb

@@ -9,6 +9,7 @@ module Geoblacklight
   require 'geoblacklight/wms_layer'
   require 'geoblacklight/download'
   require 'geoblacklight/download/shapefile_download'
+  require 'geoblacklight/download/geojson_download'
   require 'geoblacklight/download/kmz_download'
   require 'geoblacklight/reference'
   require 'geoblacklight/references'

lib/geoblacklight/download/geojson_download.rb

@@ -0,0 +1,20 @@
+class GeojsonDownload < Download
+  GEOJSON_DOWNLOAD_PARAMS = {
+    service: 'wfs',
+    version: '2.0.0',
+    request: 'GetFeature',
+    srsName: 'EPSG:4326',
+    outputformat: 'application/json'
+  }
+
+  def initialize(document)
+    request_params = GEOJSON_DOWNLOAD_PARAMS.merge(typeName: document[:layer_id_s])
+    super(document, {
+      type: 'geojson',
+      extension: 'json',
+      request_params: request_params,
+      content_type: 'application/json',
+      service_type: 'wfs'
+    })
+  end
+end

lib/geoblacklight/references.rb

@@ -42,7 +42,7 @@ def file_download
     def downloads_by_format
       case format
       when 'Shapefile'
-        { shapefile: wfs.to_hash, kmz: wms.to_hash }
+        { shapefile: wfs.to_hash, kmz: wms.to_hash, geojson: wfs.to_hash }
       end
     end
 

spec/lib/geoblacklight/download/geojson_download_spec.rb

@@ -0,0 +1,14 @@
+require 'spec_helper'
+
+describe GeojsonDownload do
+  let(:document) { SolrDocument.new(layer_slug_s: 'test', solr_wfs_url: 'http://www.example.com/wfs', layer_id_s: 'stanford-test', solr_bbox: '-180 -90 180 90') }
+  let(:download) { GeojsonDownload.new(document) }
+  describe '#initialize' do
+    it 'should initialize as a GeojsonDownload object with specific options' do
+      expect(download).to be_an GeojsonDownload
+      options = download.instance_variable_get(:@options)
+      expect(options[:content_type]).to eq 'application/json'
+      expect(options[:request_params][:typeName]).to eq 'stanford-test'
+    end
+  end
+end

spec/lib/geoblacklight/references_spec.rb

@@ -86,13 +86,13 @@
     it 'should return available downloads by format' do
       types = complex_shapefile.download_types
       expect(types.first[1]).to eq wfs: 'http://hgl.harvard.edu:8080/geoserver/wfs'
-      expect(types.count).to eq 2
+      expect(types.count).to eq 3
       expect(direct_download_only.download_types).to be_nil
     end
     it 'should only return available downloads if no direct is present' do
       types = typical_ogp_shapefile.download_types
       expect(types.first[1]).to eq wfs: "http://hgl.harvard.edu:8080/geoserver/wfs"
-      expect(types.count).to eq 2
+      expect(types.count).to eq 3
     end
   end
 end