Add mutation for wallpaper types (#41)

src/datasources/product-api.ts

@@ -17,7 +17,7 @@ import {
   ProductSizeTypes,
 } from '../types/product-types';
 import { Maybe } from '../types/types';
-import { convertToPossibleType, nullOrNumber } from './utils';
+import { nullOrNumber } from './utils';
 
 const MINUTE = 60;
 
@@ -296,6 +296,24 @@ export class ProductAPI extends BaseSQLDataSource {
     return Promise.all(insertsPromises);
   }
 
+  async setWallpaperTypes(
+    productId: number,
+    wallpaperTypes: Array<ProductWallpaperType>,
+  ): Promise<any[]> {
+    await this.knex('product_wallpapertypes')
+      .where('product_id', productId)
+      .del();
+
+    const promises = wallpaperTypes.map((wpt) => {
+      const typeId = ProductWallpaperType[wpt];
+      return this.knex('product_wallpapertypes').insert({
+        product_id: productId,
+        wallpapertype_id: typeId,
+      });
+    });
+    return Promise.all(promises);
+  }
+
   async updateGroups(productId: number, groupIds: number[]): Promise<any[]> {
     // Fetch the current state
     const allPrintProducts = await this.knex.raw(