Add /rainbow-pool.json for all species, colors, and poses

This clocks in a bit bigger than what Impress 2020 does in terms of
binary encoding (with gzip it's at 11K instead of 4K), but I'm okay
with that for the simplicity win.

Gonna try to swap this in for where we're still using Impress 2020 for
the species/color picker in the outfit editor!

app/controllers/pet_types_controller.rb

@@ -1,5 +1,7 @@
 class PetTypesController < ApplicationController
 	def index
+		respond_to do |format|
+			format.html {
 				@species_names = Species.order(:name).map(&:human_name)
 				@color_names = Color.order(:name).map(&:human_name)
 
@@ -23,6 +25,18 @@ class PetTypesController < ApplicationController
 				if @selected_color
 					@pet_types = @pet_types.where(color_id: @selected_color)
 				end
+			}
+
+			format.json {
+				if stale?(etag: PetState.last_updated_key)
+					render json: {
+						species: Species.order(:name).all,
+						colors: Color.order(:name).all,
+						supported_poses: PetState.all_supported_poses,
+					}
+				end
+			}
+		end
 	end
 
 	def show

app/models/pet_state.rb

@@ -12,7 +12,7 @@ class PetState < ApplicationRecord
 
   belongs_to :pet_type
 
-  delegate :color, to: :pet_type
+  delegate :species_id, :species, :color_id, :color, to: :pet_type
 
   alias_method :swf_asset_ids_from_association, :swf_asset_ids
   
@@ -209,5 +209,23 @@ class PetState < ApplicationRecord
     self.female = female
     self.unconverted = unconverted
   end
+
+  def self.last_updated_key
+    PetState.maximum(:id)
+  end
+
+  def self.all_supported_poses
+    Rails.cache.fetch("PetState.all_supported_poses #{last_updated_key}") do
+      {}.tap do |h|
+        includes(:pet_type).find_each do |pet_state|
+          h[pet_state.species_id] ||= {}
+          h[pet_state.species_id][pet_state.color_id] ||= []
+          h[pet_state.species_id][pet_state.color_id] << pet_state.pose
+        end
+
+        h.values.map(&:values).flatten(1).each(&:uniq!).each(&:sort!)
+      end
+    end
+  end
 end
 

app/models/pet_type.rb

@@ -156,6 +156,5 @@ class PetType < ApplicationRecord
       end
     end
   end
-
 end