feat(api): Handle channel as facet for search and product queries

packages/api/src/platforms/vtex/clients/commerce/index.ts

@@ -11,6 +11,7 @@ import type {
   SimulationOptions,
 } from './types/Simulation'
 import type { Session } from './types/Session'
+import ChannelMarshal from '../../utils/channel'
 
 const BASE_INIT = {
   method: 'POST',
@@ -62,12 +63,13 @@ export const VtexCommerce = (
       orderForm: ({
         id,
         refreshOutdatedData = true,
-        salesChannel = ctx.storage.channel,
+        channel = ctx.storage.channel,
       }: {
         id: string
         refreshOutdatedData?: boolean
-        salesChannel?: string
+        channel?: string
       }): Promise<OrderForm> => {
+        const { salesChannel } = ChannelMarshal.parse(channel)
         const params = new URLSearchParams({
           refreshOutdatedData: refreshOutdatedData.toString(),
           sc: salesChannel,

packages/api/src/platforms/vtex/resolvers/product.ts

@@ -62,6 +62,7 @@ export const StoreProduct: Record<string, Resolver<Root>> = {
     } = ctx
 
     const { id, policies } = product
+
     const sellers = policies.find((policy) => policy.id === channel)?.sellers
 
     if (sellers == null) {

packages/api/src/platforms/vtex/resolvers/query.ts

@@ -26,7 +26,7 @@ export const Query = {
       loaders: { skuLoader },
     } = ctx
 
-    return skuLoader.load(locator.map(transformSelectedFacet))
+    return skuLoader.load(locator.flatMap(transformSelectedFacet))
   },
   collection: (_: unknown, { slug }: QueryCollectionArgs, ctx: Context) => {
     const {
@@ -54,7 +54,7 @@ export const Query = {
       count: first,
       query: term,
       sort: SORT_MAP[sort ?? 'score_desc'],
-      selectedFacets: selectedFacets?.map(transformSelectedFacet) ?? [],
+      selectedFacets: selectedFacets?.flatMap(transformSelectedFacet) ?? [],
     }
 
     return searchArgs

packages/api/src/platforms/vtex/utils/channel.ts

@@ -4,7 +4,7 @@ export interface Channel {
 }
 
 export default class ChannelMarshal {
-  public static parse(channelString: string): Channel {
+  public static parse(channelString: string): Required<Channel> {
     try {
       const parsedChannel = JSON.parse(channelString) as Channel
 

packages/api/src/platforms/vtex/utils/facets.ts

@@ -1,16 +1,32 @@
+import ChannelMarshal from './channel'
+
 export interface SelectedFacet {
   key: string
   value: string
 }
 
 /**
  * Transform facets from the store to VTEX platform facets.
- * For instance, the channel in Store becomes trade-policy in VTEX's realm
+ * For instance, the channel in Store becomes trade-policy and regionId in VTEX's realm
  * */
 export const transformSelectedFacet = ({ key, value }: SelectedFacet) => {
   switch (key) {
-    case 'channel':
-      return { key: 'trade-policy', value }
+    case 'channel': {
+      const channel = ChannelMarshal.parse(value)
+
+      const result = []
+
+      if (channel.salesChannel) {
+        result.push({ key: 'trade-policy', value: channel.salesChannel })
+      }
+
+      // TODO: Remove comment when the IS accept regionId facet.
+      // if (channel.regionId) {
+      // result.push({ key: 'regionId', value: channel.regionId })
+      // }
+
+      return result
+    }
 
     default:
       return { key, value }