Update paths for versionable routes

Fixes #1230

app/models/cocina.rb

@@ -25,7 +25,7 @@ def self.metadata_cache_key(druid, version)
   end
 
   def self.public_json_url(druid, version)
-    return "#{Settings.purl.url}#{druid}/#{version}.json" unless version == :head
+    return "#{Settings.purl.url}#{druid}/version/#{version}.json" unless version == :head
 
     "#{Settings.purl.url}#{druid}.json"
   end

config/routes.rb

@@ -2,15 +2,13 @@
   druid_regex = /([a-z]{2})(\d{3})([a-z]{2})(\d{4})/i
 
   get '/object/:id' => 'object#show', as: :object
-  get '/object/:id/:version_id', to: 'object#show', constraints: { version_id: /v\d+/ }
+  get '/object/:id/version/:version_id', to: 'object#show'
 
   constraints id: druid_regex do
     scope format: false do  # Tell rails not to separate out the filename suffixes
       scope '/v2' do # versionable files
-        constraints version_id: /v\d+/ do
-          get '/file/:id/:version_id/*file_name', to: 'file#show', as: :versioned_file
-          options '/file/:id/:version_id/*file_name', to: 'file#options'
-        end
+        get '/file/:id/version/:version_id/*file_name', to: 'file#show', as: :versioned_file
+        options '/file/:id/version/:version_id/*file_name', to: 'file#options'
       end
 
       # File/auth routes without druid namespace
@@ -68,7 +66,7 @@
     match '/image/iiif/:identifier/info.json' => 'iiif#metadata_options', via: [:options]
   end
 
-  # As of Sept 2017, the legacy service was still used by Revs and Bassi Verati/FRDA
+  # As of Aug 2024, the legacy service was still used by Bassi Verati/FRDA
   # It's also likely used by other applications too.
   # The LegacyImageService is just a facade that redirects to the appropriate IIIF URI
   constraints id: druid_regex, file_name: %r{[^/]+}, format: %r{(jpg|png|gif|jp2)}, size: %r{(#{Settings.legacy.sizes.join('|')})} do

spec/models/cocina_spec.rb

@@ -59,12 +59,12 @@
 
     context 'when requesting a specific version' do
       before do
-        stub_request(:get, "https://purl.stanford.edu/abc/v2.json")
+        stub_request(:get, "https://purl.stanford.edu/abc/version/2.json")
           .to_return(status: 200, body: json)
       end
 
       it 'gets all the files for a resource' do
-        actual = described_class.find('abc', 'v2').files.map { |file| "#{file.id}/#{file.file_name}" }
+        actual = described_class.find('abc', '2').files.map { |file| "#{file.id}/#{file.file_name}" }
 
         expect(actual).to contain_exactly('abc/26855.jp2', 'abc/123.jp2')
       end

spec/requests/versioned_file_spec.rb

@@ -8,7 +8,7 @@
   end
 
   let(:druid) { 'nr349ct7889' }
-  let(:version_id) { 'v1' }
+  let(:version_id) { '1' }
   let(:file_name) { 'image.jp2' }
   let(:public_json) do
     {
@@ -35,7 +35,7 @@
 
   describe 'OPTIONS options' do
     it 'permits Range headers for all origins' do
-      options "/v2/file/#{druid}/#{version_id}/#{file_name}"
+      options "/v2/file/#{druid}/version/#{version_id}/#{file_name}"
       expect(response).to be_successful
       expect(response.headers['Access-Control-Allow-Origin']).to eq '*'
       expect(response.headers['Access-Control-Allow-Headers']).to include 'Range'
@@ -52,27 +52,27 @@
     before do
       allow_any_instance_of(FileController).to receive(:send_file)
         .with('spec/fixtures/nr/349/ct/7889/path/to/image.jp2', filename: 'path/to/image.jp2', disposition: :inline)
-      stub_request(:get, "https://purl.stanford.edu/#{druid}/#{version_id}.json")
+      stub_request(:get, "https://purl.stanford.edu/#{druid}/version/#{version_id}.json")
         .to_return(status: 200, body: public_json.to_json)
     end
 
     it 'returns a successful HTTP response' do
-      get "/v2/file/#{druid}/#{version_id}/#{file_name}"
+      get "/v2/file/#{druid}/version/#{version_id}/#{file_name}"
       expect(response).to be_successful
       expect(Cocina).to have_received(:find).with(druid, version_id)
     end
   end
 
   describe 'GET missing file' do
     before do
-      stub_request(:get, "https://purl.stanford.edu/xf680rd3068/v1.json")
+      stub_request(:get, "https://purl.stanford.edu/xf680rd3068/version/1.json")
         .to_return(status: 200, body: public_json.to_json)
     end
 
     it 'returns a 400 HTTP response' do
-      get '/v2/file/xf680rd3068/v1/path/to/99999.jp2'
+      get '/v2/file/xf680rd3068/version/1/path/to/99999.jp2'
       expect(response).to have_http_status(:not_found)
-      expect(Cocina).to have_received(:find).with('xf680rd3068', 'v1')
+      expect(Cocina).to have_received(:find).with('xf680rd3068', '1')
     end
   end
 end