Add mutation to add keywords (#24)

src/datasources/product-api.ts

@@ -214,14 +214,14 @@ export class ProductAPI extends BaseSQLDataSource {
     ON CONFLICT (product_id, group_id, market_id)
     DO NOTHING`;
 
-    const insertsPromises = [];
-    const deleteQuery = this.knex.raw(
+    await this.knex.raw(
       /* sql */ `
       DELETE FROM product_blacklist WHERE product_id = ?
     `,
       [productId],
     );
-    insertsPromises.push(deleteQuery);
+
+    const insertsPromises = [];
     markets.forEach((market) => {
       market.groupIds.forEach((groupId) => {
         const query = this.knex.raw(sql, [productId, groupId, market.marketId]);