8362 add rooms to facets and adjust color behaviour (#182)

src/datasources/category-api.ts

@@ -65,6 +65,68 @@ WHERE product_category.product_id = ?
     return res;
   }
 
+  async getCategoryBasedFacets(
+    productId: number,
+  ): Promise<{ room: string[]; color: string[] }> {
+    ScopeAccess.validate(this.user).some([
+      Scopes.CATEGORIES_READ,
+      Scopes.CATEGORIES_PUBLIC_READ,
+    ]);
+
+    const ROOMS_PARENT_ID = 270;
+    const COLORS_PARENT_ID = 1665;
+
+    const { rows } = await this.cachedRaw(
+      `
+        WITH rooms AS (
+        SELECT lft, rgt FROM categories WHERE id = ?
+        ),
+        colors AS (
+        SELECT lft, rgt FROM categories WHERE id = ?
+        )
+        SELECT
+          array_remove(
+          array_agg(
+            DISTINCT CASE
+            WHEN c.lft > rooms.lft AND c.rgt < rooms.rgt THEN c.name
+            END
+          ),
+          NULL
+          ) AS room,
+          array_remove(
+          array_agg(
+            DISTINCT CASE
+            WHEN c.lft > colors.lft AND c.rgt < colors.rgt THEN c.name
+            END
+          ),
+          NULL
+        ) AS color
+        FROM product_category pc
+        JOIN categories c ON c.id = pc.category_id
+        CROSS JOIN rooms
+        CROSS JOIN colors
+        WHERE pc.product_id = ?
+        AND (
+          (c.lft > rooms.lft AND c.rgt < rooms.rgt)
+        OR
+          (c.lft > colors.lft AND c.rgt < colors.rgt)
+        )
+      `,
+      [ROOMS_PARENT_ID, COLORS_PARENT_ID, productId],
+    )
+      // @ts-ignore
+      .cache(MINUTE * 5);
+
+    const facetRow = rows[0] ?? { room: [], color: [] };
+    const roomCategories: string[] = facetRow.room ?? [];
+    const colorCategories: string[] = facetRow.color ?? [];
+
+    return {
+      room: roomCategories,
+      color: colorCategories,
+    };
+  }
+
   async getCategoryById(id: number): Promise<Category> {
     // Dataloaders does not need scopes validation since they
     // use other functions.

src/resolvers/products-resolver.ts

@@ -68,11 +68,16 @@ const Product = {
     const keywords = await (<KeywordAPI>(
       dataSources.keywordApi
     )).getProductKeywords(product.id);
-    const colors = [];
+
+    const categoryBasedFacets = await (<CategoryAPI>(
+      dataSources.categoryApi
+    )).getCategoryBasedFacets(product.id);
+
+    const colorsByKeyword = [];
     const types = [];
     keywords.forEach((keyword) => {
       if (keyword.type === 'COLOR') {
-        colors.push(keyword.value);
+        colorsByKeyword.push(keyword.value);
       } else if (keyword.value === 'typeillustration') {
         types.push('illustration');
       } else if (keyword.value === 'typephotography') {
@@ -93,13 +98,28 @@ const Product = {
         ]
       : [getOrientationString(product.fields)];
 
+    const colors = new Set([
+      ...colorsByKeyword,
+      ...categoryBasedFacets.color.map((c) => {
+        if (c === 'multi color') {
+          // Normalize to match keyword format
+          return 'multicolor';
+        }
+        return c;
+      }),
+    ]);
+
     return [
-      { attribute: 'color', values: colors },
+      {
+        attribute: 'color',
+        values: [...colors],
+      },
       {
         attribute: 'orientation',
         values: orientations.map((value) => value.toLowerCase()),
       },
       { attribute: 'type', values: types },
+      { attribute: 'room', values: categoryBasedFacets.room },
     ];
   },
 };