add items to outfit thumbnails

Now that wasn't so hard! :3

src/app/UserOutfitsPage.js

@@ -7,6 +7,7 @@ import { ErrorMessage, Heading1 } from "./util";
 import {
   getVisibleLayers,
   petAppearanceFragmentForGetVisibleLayers,
+  itemAppearanceFragmentForGetVisibleLayers,
 } from "./components/useOutfitAppearance";
 import HangerSpinner from "./components/HangerSpinner";
 import useRequireLogin from "./components/useRequireLogin";
@@ -43,10 +44,20 @@ function UserOutfitsPageContent() {
               }
               ...PetAppearanceForGetVisibleLayers
             }
+            itemAppearances {
+              id
+              layers {
+                id
+                svgUrl
+                imageUrl(size: $size)
+              }
+              ...ItemAppearanceForGetVisibleLayers
+            }
           }
         }
       }
       ${petAppearanceFragmentForGetVisibleLayers}
+      ${itemAppearanceFragmentForGetVisibleLayers}
     `,
     { variables: { size: "SIZE_" + getBestImageSize() }, skip: userLoading }
   );
@@ -77,7 +88,10 @@ function UserOutfitsPageContent() {
 }
 
 function OutfitCard({ outfit }) {
-  const thumbnailUrl = buildOutfitThumbnailUrl(outfit.petAppearance, []);
+  const thumbnailUrl = buildOutfitThumbnailUrl(
+    outfit.petAppearance,
+    outfit.itemAppearances
+  );
 
   return (
     <Flex
@@ -105,6 +119,14 @@ function buildOutfitThumbnailUrl(petAppearance, itemAppearances) {
   return `/api/outfitImage?size=${size}&layerUrls=${layerUrls.join(",")}`;
 }
 
+/**
+ * getBestImageSize returns the right image size to render at 150x150, for the
+ * current device.
+ *
+ * On high-DPI devices, we'll download a 300x300 image to render at 150x150
+ * scale. On standard-DPI devices, we'll download a 150x150 image, to save
+ * bandwidth.
+ */
 function getBestImageSize() {
   if (window.devicePixelRatio > 1) {
     return 300;

src/app/components/useOutfitAppearance.js

@@ -137,6 +137,22 @@ export function getVisibleLayers(petAppearance, itemAppearances) {
   return visibleLayers;
 }
 
+export const itemAppearanceFragmentForGetVisibleLayers = gql`
+  fragment ItemAppearanceForGetVisibleLayers on ItemAppearance {
+    id
+    layers {
+      id
+      zone {
+        id
+        depth @client
+      }
+    }
+    restrictedZones {
+      id
+    }
+  }
+`;
+
 export const itemAppearanceFragment = gql`
   fragment ItemAppearanceForOutfitPreview on ItemAppearance {
     id
@@ -149,15 +165,13 @@ export const itemAppearanceFragment = gql`
       swfUrl # HACK: This is for Support tools, but other views don't need it
       bodyId
       zone {
-        id
-        depth @client
         label @client # HACK: This is for Support tools, but other views don't need it
       }
     }
-    restrictedZones {
-      id
-    }
+    ...ItemAppearanceForGetVisibleLayers
   }
+
+  ${itemAppearanceFragmentForGetVisibleLayers}
 `;
 
 export const petAppearanceFragmentForGetVisibleLayers = gql`

src/server/types/Outfit.js

@@ -7,6 +7,10 @@ const typeDefs = gql`
     petAppearance: PetAppearance!
     wornItems: [Item!]!
     closetedItems: [Item!]!
+
+    # This is a convenience field: you could query this from the combination of
+    # petAppearance and wornItems, but this gets you it in one shot!
+    itemAppearances: [ItemAppearance!]!
   }
 
   extend type Query {
@@ -24,6 +28,33 @@ const resolvers = {
       const outfit = await outfitLoader.load(id);
       return { id: outfit.petStateId };
     },
+    itemAppearances: async (
+      { id },
+      _,
+      {
+        outfitLoader,
+        petStateLoader,
+        petTypeLoader,
+        itemOutfitRelationshipsLoader,
+      }
+    ) => {
+      const [petType, relationships] = await Promise.all([
+        outfitLoader
+          .load(id)
+          .then((outfit) => petStateLoader.load(outfit.petStateId))
+          .then((petState) => petTypeLoader.load(petState.petTypeId)),
+        itemOutfitRelationshipsLoader.load(id),
+      ]);
+
+      const wornItemIds = relationships
+        .filter((oir) => oir.isWorn)
+        .map((oir) => oir.itemId);
+
+      return wornItemIds.map((itemId) => ({
+        item: { id: itemId },
+        bodyId: petType.bodyId,
+      }));
+    },
     wornItems: async ({ id }, _, { itemOutfitRelationshipsLoader }) => {
       const relationships = await itemOutfitRelationshipsLoader.load(id);
       return relationships