v3: expose available attributes for collections

lib/travis/api/v3/renderer/collection.rb

@@ -1,10 +0,0 @@
-module Travis::API::V3
-  module Renderer::Collection
-    extend self
-
-    def render(collection_type, entry_type, entries, href: nil, script_name: nil, include: [], included: [], **)
-      entries &&= entries.map { |entry| Renderer[entry_type].render(entry, script_name: script_name, include: include, included: included) }
-      Renderer.clear(:@type => collection_type, :@href => href).merge(collection_type => entries)
-    end
-  end
-end

lib/travis/api/v3/renderer/collection_renderer.rb

@@ -0,0 +1,43 @@
+module Travis::API::V3
+  class Renderer::CollectionRenderer
+    def self.render(list, **options)
+      new(list, **options).render
+    end
+
+    def self.available_attributes
+      @available_attributes ||= Set.new
+    end
+
+    def self.type(value)
+      define_method(:type) { value }
+    end
+
+    def self.collection_key(value)
+      define_method(:collection_key) { value }
+      available_attributes << value
+    end
+
+    def initialize(list, href: nil, included: [], **options)
+      @href     = href
+      @options  = options
+      @list     = list
+      @included = included
+    end
+
+    def render
+      result                 = { :"@type" => type }
+      result[:@href]         = @href if @href
+      included               = @included.dup
+      result[collection_key] = @list.map do |entry|
+        rendered = render_entry(entry, included: included, mode: :standard, **@options)
+        included << entry
+        rendered
+      end
+      result
+    end
+
+    def render_entry(entry, **options)
+      Renderer.render_value(entry, **options)
+    end
+  end
+end

lib/travis/api/v3/renderer/organizations.rb

@@ -1,9 +1,6 @@
 module Travis::API::V3
-  module Renderer::Organizations
-    extend self
-
-    def render(repositories, **options)
-      Renderer[:collection].render(:organizations, :organization, repositories, **options)
-    end
+  class Renderer::Organizations < Renderer::CollectionRenderer
+    type            :organizations
+    collection_key  :organizations
   end
 end

lib/travis/api/v3/renderer/repositories.rb

@@ -1,9 +1,6 @@
 module Travis::API::V3
-  module Renderer::Repositories
-    extend self
-
-    def render(repositories, **options)
-      Renderer[:collection].render(:repositories, :repository, repositories, **options)
-    end
+  class Renderer::Repositories < Renderer::CollectionRenderer
+    type           :repositories
+    collection_key :repositories
   end
 end

lib/travis/api/v3/renderer/requests.rb

@@ -0,0 +1,6 @@
+module Travis::API::V3
+  class Renderer::Requests < Renderer::CollectionRenderer
+    type            :requests
+    collection_key  :requests
+  end
+end

spec/v3/service_index_spec.rb

@@ -18,7 +18,8 @@ describe Travis::API::V3::ServiceIndex do
            "create"=>
             [{"@type"=>"template",
               "request_method"=>"POST",
-              "uri_template"=>"#{path}repo/{repository.id}/requests"}]}},
+              "uri_template"=>"#{path}repo/{repository.id}/requests"}]},
+         "attributes"=>["requests"]},
        "branch"=>
         {"@type"=>"resource",
          "actions"=>
@@ -59,7 +60,8 @@ describe Travis::API::V3::ServiceIndex do
           {"for_current_user"=>
             [{"@type"=>"template",
               "request_method"=>"GET",
-              "uri_template"=>"#{path}repos"}]}},
+              "uri_template"=>"#{path}repos"}]},
+         "attributes"=>["repositories"]},
        "build"=>
         {"@type"=>"resource",
          "actions"=>
@@ -90,7 +92,8 @@ describe Travis::API::V3::ServiceIndex do
           {"for_current_user"=>
             [{"@type"=>"template",
               "request_method"=>"GET",
-              "uri_template"=>"#{path}orgs"}]}}}
+              "uri_template"=>"#{path}orgs"}]},
+         "attributes"=>["organizations"]}}
     }
 
     describe 'with /v3 prefix' do