Initial work, copied from the Shopify provider

framework/saleor/utils/get-vendors.ts

@@ -0,0 +1,40 @@
+import { SaleorConfig } from '../api'
+import fetchAllProducts from '../api/utils/fetch-all-products'
+import getAllProductVendors from './queries/get-all-product-vendors-query'
+
+export type Brand = {
+  entityId: string
+  name: string
+  path: string
+}
+
+export type BrandEdge = {
+  node: Brand
+}
+
+export type Brands = BrandEdge[]
+
+const getVendors = async (config: SaleorConfig): Promise<BrandEdge[]> => {
+  const vendors = await fetchAllProducts({
+    config,
+    query: getAllProductVendors,
+    variables: {
+      first: 250,
+    },
+  })
+
+  let vendorsStrings = vendors.map(({ node: { vendor } }) => vendor)
+
+  return [...new Set(vendorsStrings)].map((v) => {
+    const id = v.replace(/\s+/g, '-').toLowerCase()
+    return {
+      node: {
+        entityId: id,
+        name: v,
+        path: `brands/${id}`,
+      },
+    }
+  })
+}
+
+export default getVendors