[WV2] Group items by zone

app/helpers/outfits_helper.rb

@@ -75,8 +75,133 @@ module OutfitsHelper
       locals: parse_outfit_viewer_options(...)
   end
 
+  # Group outfit items by zone, applying smart multi-zone simplification.
+  # Returns an array of hashes: {zone:, items:}
+  # This matches the logic from wardrobe-2020's getZonesAndItems function.
+  def outfit_items_by_zone(outfit)
+    return [] if outfit.pet_type.nil?
+
+    # Get item appearances for this outfit
+    item_appearances = Item.appearances_for(
+      outfit.worn_items,
+      outfit.pet_type,
+      swf_asset_includes: [:zone]
+    )
+
+    # Separate incompatible items (no layers for this pet)
+    compatible_items = []
+    incompatible_items = []
+
+    outfit.worn_items.each do |item|
+      appearance = item_appearances[item.id]
+      if appearance&.present?
+        compatible_items << {item: item, appearance: appearance}
+      else
+        incompatible_items << item
+      end
+    end
+
+    # Group items by zone - multi-zone items appear in each zone
+    items_by_zone = Hash.new { |h, k| h[k] = [] }
+    zones_by_id = {}
+
+    compatible_items.each do |item_with_appearance|
+      item = item_with_appearance[:item]
+      appearance = item_with_appearance[:appearance]
+
+      # Get unique zones for this item (an item may have multiple assets per zone)
+      appearance.swf_assets.map(&:zone).uniq.each do |zone|
+        zones_by_id[zone.id] = zone
+        items_by_zone[zone.id] << item
+      end
+    end
+
+    # Create zone groups with sorted items
+    zones_and_items = items_by_zone.map do |zone_id, items|
+      {
+        zone_id: zone_id,
+        zone_label: zones_by_id[zone_id].label,
+        items: items.sort_by { |item| item.name.downcase }
+      }
+    end
+
+    # Sort zone groups alphabetically by label, then by ID for tiebreaking
+    zones_and_items.sort_by! do |group|
+      [group[:zone_label].downcase, group[:zone_id]]
+    end
+
+    # Apply multi-zone simplification: remove redundant single-item groups
+    zones_and_items = simplify_multi_zone_groups(zones_and_items)
+
+    # Add zone ID disambiguation for duplicate labels
+    zones_and_items = disambiguate_zone_labels(zones_and_items)
+
+    # Add incompatible items section if any
+    if incompatible_items.any?
+      zones_and_items << {
+        zone_id: nil,
+        zone_label: "Incompatible",
+        items: incompatible_items.sort_by { |item| item.name.downcase }
+      }
+    end
+
+    zones_and_items
+  end
+
   private
 
+  # Simplify zone groups by removing redundant single-item groups.
+  # Keep groups with multiple items (conflicts). For single-item groups,
+  # only keep them if the item doesn't appear in a multi-item group.
+  def simplify_multi_zone_groups(zones_and_items)
+    # Find groups with conflicts (multiple items)
+    groups_with_conflicts = zones_and_items.select { |g| g[:items].length > 1 }
+
+    # Track which items appear in conflict groups
+    items_with_conflicts = Set.new(
+      groups_with_conflicts.flat_map { |g| g[:items].map(&:id) }
+    )
+
+    # Track which items we've already shown
+    items_we_have_seen = Set.new
+
+    # Filter groups
+    zones_and_items.select do |group|
+      # Always keep groups with multiple items
+      if group[:items].length > 1
+        group[:items].each { |item| items_we_have_seen.add(item.id) }
+        true
+      else
+        # For single-item groups, only keep if:
+        # - Item hasn't been seen yet AND
+        # - Item won't appear in a conflict group
+        item = group[:items].first
+        item_id = item.id
+
+        if items_we_have_seen.include?(item_id) || items_with_conflicts.include?(item_id)
+          false
+        else
+          items_we_have_seen.add(item_id)
+          true
+        end
+      end
+    end
+  end
+
+  # Add zone IDs to labels when there are duplicates
+  def disambiguate_zone_labels(zones_and_items)
+    label_counts = zones_and_items.group_by { |g| g[:zone_label] }
+                                  .transform_values(&:count)
+
+    zones_and_items.each do |group|
+      if label_counts[group[:zone_label]] > 1
+        group[:zone_label] = "#{group[:zone_label]} (##{group[:zone_id]})"
+      end
+    end
+
+    zones_and_items
+  end
+
   def parse_outfit_viewer_options(
     outfit=nil, pet_state: nil, preferred_image_format: :png, **html_options
   )

app/views/outfits/new_v2.html.haml

@@ -51,13 +51,17 @@
         - if @outfit.worn_items.any?
           .worn-items
             %h2 Items (#{@outfit.worn_items.size})
-            %ul.items-list
-              - @outfit.worn_items.each do |item|
-                %li.item-card
-                  .item-thumbnail
-                    = image_tag item.thumbnail_url, alt: item.name, loading: "lazy"
-                  .item-info
-                    .item-name= item.name
-                    .item-badges
-                      = render "items/badges/kind", item: item
-                      = render "items/badges/first_seen", item: item
+
+            - outfit_items_by_zone(@outfit).each do |zone_group|
+              .zone-group
+                %h3.zone-label= zone_group[:zone_label]
+                %ul.items-list
+                  - zone_group[:items].each do |item|
+                    %li.item-card
+                      .item-thumbnail
+                        = image_tag item.thumbnail_url, alt: item.name, loading: "lazy"
+                      .item-info
+                        .item-name= item.name
+                        .item-badges
+                          = render "items/badges/kind", item: item
+                          = render "items/badges/first_seen", item: item