Filter search in wardrobe-2020 by alt styles!

Yay, we finally added it, the part where we include the appearance data
for the items based on both the species/color and the alt style! Now,
switching to Faerie Acara correctly filters the search only to items
that would fit (I think literally just only body_id=0 items right now,
but we're not banking on that!)

app/controllers/items_controller.rb

@@ -121,11 +121,16 @@ class ItemsController < ApplicationController
   def load_appearances
     appearance_params = params[:with_appearances_for]
     return {} if appearance_params.blank?
-    raise NotImplementedError if appearance_params[:alt_style_id].present?
     
-    pet_type = Item::Search::Query.load_pet_type_by_color_and_species(
+    if appearance_params[:alt_style_id].present?
+      target = Item::Search::Query.load_alt_style_by_id(
+        appearance_params[:alt_style_id])
+    else
+      target = Item::Search::Query.load_pet_type_by_color_and_species(
         appearance_params[:color_id], appearance_params[:species_id])
-    pet_type.appearances_for(@items.map(&:id), swf_asset_includes: [:zone])
+    end
+
+    target.appearances_for(@items.map(&:id), swf_asset_includes: [:zone])
   end
   
   def search_error(e)

app/models/alt_style.rb

@@ -6,11 +6,31 @@ class AltStyle < ApplicationRecord
   has_many :swf_assets, through: :parent_swf_asset_relationships
   has_many :contributions, as: :contributed, inverse_of: :contributed
 
+  scope :matching_name, ->(series_name, color_name, species_name) {
+    color = Color.find_by_name!(color_name)
+    species = Species.find_by_name!(species_name)
+    where(series_name:, color_id: color.id, species_id: species.id)
+  }
+
   def name
     I18n.translate('pet_types.human_name', color_human_name: color.human_name,
                    species_human_name: species.human_name)
   end
 
+  # If the series_name hasn't yet been set manually by support staff, show the
+  # string "<New?>" instead. But it won't be searchable by that string—that is,
+  # `fits:<New?>-faerie-draik` intentionally will not work, and the canonical
+  # filter name will be `fits:alt-style-IDNUMBER`, instead.
+  def series_name
+    self[:series_name] || "<New?>"
+  end
+
+  # You can use this to check whether `series_name` is returning the actual
+  # value or its placeholder value.
+  def has_real_series_name?
+    self[:series_name].present?
+  end
+
   def adjective_name
     "#{series_name} #{color.human_name}"
   end
@@ -29,6 +49,11 @@ class AltStyle < ApplicationRecord
     swf_asset.image_url
   end
 
+  # Given a list of item IDs, return how they look on this alt style.
+  def appearances_for(item_ids, ...)
+    Item.appearances_for(item_ids, self, ...)
+  end
+
   def biology=(biology)
     # TODO: This is very similar to what `PetState` does, but like… much much
     # more compact? Idk if I'm missing something, or if I was just that much

app/models/item.rb

@@ -495,6 +495,34 @@ class Item < ApplicationRecord
     end
   end
 
+  # Given a list of item IDs, return how they look on the given target (either
+  # a pet type or an alt style).
+  def self.appearances_for(item_ids, target, swf_asset_includes: [])
+    # First, load all the relationships for these items that also fit this
+    # body.
+    relationships = ParentSwfAssetRelationship.
+      includes(swf_asset: swf_asset_includes).
+      where(parent_type: "Item", parent_id: item_ids).
+      where(swf_asset: {body_id: [target.body_id, 0]})
+
+    pet_type_body = Appearance::Body.new(target.body_id, target.species)
+    all_pets_body = Appearance::Body.new(0, nil)
+
+    # Then, convert this into a hash from item ID to SWF assets.
+    assets_by_item_id = relationships.group_by(&:parent_id).
+      transform_values { |rels| rels.map(&:swf_asset) }
+
+    # Finally, for each item, return an appearance—even if it's empty!
+    item_ids.to_h do |item_id|
+      assets = assets_by_item_id.fetch(item_id, [])
+
+      fits_all_pets = assets.present? && assets.all? { |a| a.body_id == 0 }
+      body = fits_all_pets ? all_pets_body : pet_type_body
+
+      [item_id, Appearance.new(body, assets)]
+    end
+  end
+
   def self.all_by_ids_or_children(ids, swf_assets)
     swf_asset_ids = []
     swf_assets_by_id = {}

app/models/item/search/query.rb

@@ -62,6 +62,8 @@ class Item
         when 'restricts'
           is_positive ? Filter.restricts(value) : Filter.not_restricts(value)
         when 'fits'
+          # First, try the `fits:blue-acara` case.
+          # NOTE: This will also work for `fits:"usuki girl-usul"`!
           match = value.match(/^([^-]+)-([^-]+)$/)
           if match.present?
             color_name, species_name = match.captures
@@ -70,6 +72,33 @@ class Item
               Filter.fits_pet_type(pet_type, color_name:, species_name:) :
               Filter.not_fits_pet_type(pet_type, color_name:, species_name:)
           end
+
+          # Next, try the `fits:alt-style-87305` case.
+          match = value.match(/^alt-style-([0-9]+)$/)
+          if match.present?
+            alt_style_id, = match.captures
+            alt_style = load_alt_style_by_id(alt_style_id)
+            return is_positive ?
+              Filter.fits_alt_style(alt_style) :
+              Filter.not_fits_alt_style(alt_style)
+          end
+
+          # Next, try the `fits:nostalgic-faerie-draik` case.
+          # NOTE: This will also work for `fits:"nostalgic-usuki girl-usul"`!
+          match = value.match(/^([^-]+)-([^-]+)-([^-]+)$/)
+          if match.present?
+            series_name, color_name, species_name = match.captures
+            alt_style = load_alt_style_by_name(
+              series_name, color_name, species_name)
+            return is_positive ?
+              Filter.fits_alt_style(alt_style) :
+              Filter.not_fits_alt_style(alt_style)
+          end
+
+          # TODO: We could make `fits:acara` an alias for `species:acara`, or
+          # even the primary syntax?
+
+          # If none of these cases work, raise an error.
           raise_search_error "not_found.fits_target", value: value
         when 'species'
           begin
@@ -176,10 +205,19 @@ class Item
         end
       end
 
+      def self.load_alt_style_by_name(series_name, color_name, species_name)
+        begin
+          AltStyle.matching_name(series_name, color_name, species_name).first!
+        rescue ActiveRecord::RecordNotFound
+          raise_search_error "not_found.alt_style",
+            filter_text: "#{series_name}-#{color_name}-#{species_name}"
+        end
+      end
+
       def self.load_alt_style_by_id(alt_style_id)
         begin
           AltStyle.find(alt_style_id)
-        rescue
+        rescue ActiveRecord::RecordNotFound
           raise_search_error "not_found.alt_style",
             filter_text: "alt-style-#{alt_style_id}"
         end
@@ -326,8 +364,18 @@ class Item
       end
 
       def self.alt_style_to_filter_text(alt_style)
+        # If the real series name has been set in the database by support
+        # staff, use that for the canonical filter text for this alt style.
+        # Otherwise, represent this alt style by ID.
+        if alt_style.has_real_series_name?
+          series_name = alt_style.series_name.downcase
+          color_name = alt_style.color.name.downcase
+          species_name = alt_style.species.name.downcase
+          "#{series_name}-#{color_name}-#{species_name}"
+        else
           "alt-style-#{alt_style.id}"
         end
       end
     end
+  end
 end

app/models/pet_type.rb

@@ -169,30 +169,9 @@ class PetType < ApplicationRecord
     }.first
   end
 
-  def appearances_for(item_ids, swf_asset_includes: [])
-    # First, load all the relationships for these items that also fit this
-    # body.
-    relationships = ParentSwfAssetRelationship.
-      includes(swf_asset: swf_asset_includes).
-      where(parent_type: "Item", parent_id: item_ids).
-      where(swf_asset: {body_id: [body_id, 0]})
-
-    pet_type_body = Item::Appearance::Body.new(body_id, species)
-    all_pets_body = Item::Appearance::Body.new(0, nil)
-
-    # Then, convert this into a hash from item ID to SWF assets.
-    assets_by_item_id = relationships.group_by(&:parent_id).
-      transform_values { |rels| rels.map(&:swf_asset) }
-
-    # Finally, for each item, return an appearance—even if it's empty!
-    item_ids.to_h do |item_id|
-      assets = assets_by_item_id.fetch(item_id, [])
-
-      fits_all_pets = assets.present? && assets.all? { |a| a.body_id == 0 }
-      body = fits_all_pets ? all_pets_body : pet_type_body
-
-      [item_id, Item::Appearance.new(body, assets)]
-    end
+  # Given a list of item IDs, return how they look on this pet type.
+  def appearances_for(item_ids, ...)
+    Item.appearances_for(item_ids, self, ...)
   end
 
   def self.all_by_ids_or_children(ids, pet_states)

db/migrate/20240227233743_change_default_for_alt_styles_series_name.rb

@@ -0,0 +1,6 @@
+class ChangeDefaultForAltStylesSeriesName < ActiveRecord::Migration[7.1]
+  def change
+    change_column_null :alt_styles, :series_name, true
+    change_column_default :alt_styles, :series_name, from: "<New?>", to: nil
+  end
+end

db/schema.rb

@@ -10,14 +10,14 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2024_02_27_231815) do
+ActiveRecord::Schema[7.1].define(version: 2024_02_27_233743) do
   create_table "alt_styles", charset: "utf8mb4", collation: "utf8mb4_unicode_ci", force: :cascade do |t|
     t.integer "species_id", null: false
     t.integer "color_id", null: false
     t.integer "body_id", null: false
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
-    t.string "series_name", default: "<New?>", null: false
+    t.string "series_name"
     t.index ["color_id"], name: "index_alt_styles_on_color_id"
     t.index ["species_id"], name: "index_alt_styles_on_species_id"
   end