feat(medusa, link-modules): sales channel <> cart link (#5459)

* feat: sales channel joiner config

* feat: product sales channel link config, SC list method

* feat: migration

* fix: refactor list SC

* refactor: SC repo api

* chore: changeset

* feat: add dedicated FF

* wip: cart<>sc link and migration

* chore: changeset

* fix: update migration with the cart table constraints

* feat: populate the pivot table

* chore: remove relation from joiner config

* fix: constraint name

* fix: filter out link relations when calling internal services

* feat: product<> sc join entity

* fix: update case

* fix: add FF on in the repository, fix tests

* fix: assign id when FF is on

* fix: target table

* feat: product service - fetch SC with RQ

* feat: admin list products & SC with isolated product domain

* feat: get admin product

* feat: store endpoints

* fix: remove duplicate import

* fix: remove "name" prop

* feat: typeorm entity changes

* feat: pivot table, entity, on cart create changes

* feat: update carts' SC

* feat: cart - getValidatedSalesChannel with RQ

* feat: refactor

* wip: changes to create cart workflow

* fix: remove join table entity due to migrations failing

* fix: product seeder if FF is on

* feat: attach SC handler and test

* fix: env

* feat: workflow compensation, cart service retrieve with RQ

* fix: remote joiner implode map

* chore: update changesets

* fix: remove methods from SC service/repo

* feat: use remote link in handlers

* fix: remove SC service calls

* fix: link params

* fix: migration add constraint to make link upsert pass

* refactor: workflow product handlers to handle remote links

* fix: condition

* fix: use correct method

* fix: build

* wip: update FF

* fix: update FF in the handlers

* chore: migrate to medusav2 FF

* chore: uncomment test

* fix: product factory

* fix: unlinking SC and product

* fix: use module name variable

* refactor: cleanup query definitions

* fix: add constraint

* wip: migrate FF

* fix: comments

* feat: cart entity callbacks, fix tests

* fix: only create SC in test

* wip: services updates, changes to models

* chore: rename prop

* fix: add hook

* fix: address comments

* fix: temp sc filtering

* fix: use RQ to filter by SC

* fix: relations on retrieve

* feat: migration sync data, remove FF

* fix: revert order of queries

* fix: alter migration, relations in service

* fix: revert id

* fix: migrations

* fix: make expand work

* fix: remote link method call

* fix: try making tests work without id in the pivot table

* test: use remote link

* test: relations changes

* fix: preserve channel id column

* fix: seeder and factory

* fix: remove sales_channels from response

* feat: support feature flag arrays

* fix: cover everything with correct FF

* fix: remove verbose

* fix: unit and plugin tests

* chore: comments

* fix: reenable workflow handler, add comments, split cart create workflow tests

* chore: reenable link in the create mehod, update changesets

* fix: address feedback

* fix: revert migration

* fix: change the migration to follow link module

* fix: migration syntax

* fix: merge conflicts

* fix: typo

* feat: remove store sales channel foreign key

* fix: merge migrations

* fix: FF keys

* refactor: cart service

* refactor: FF missing key

* fix: comments

* fix: address PR comments

* fix: new changesets

* fix: revert flag router changes

* chore: refactor `isFeatureEnabled`

---------

Co-authored-by: Carlos R. L. Rodrigues <rodrigolr@gmail.com>
Co-authored-by: Riqwan Thamir <rmthamir@gmail.com>

packages/core-flows/src/definition/cart/create-cart.ts

@@ -18,6 +18,7 @@ import { exportWorkflow, pipe } from "@medusajs/workflows-sdk"
 enum CreateCartActions {
   setContext = "setContext",
   attachLineItems = "attachLineItems",
+  attachToSalesChannel = "attachToSalesChannel",
   findRegion = "findRegion",
   findSalesChannel = "findSalesChannel",
   createCart = "createCart",
@@ -58,10 +59,13 @@ const workflowSteps: TransactionStepsDefinition = {
         noCompensation: true,
         next: {
           action: CreateCartActions.createCart,
-          next: {
-            action: CreateCartActions.attachLineItems,
-            noCompensation: true,
-          },
+          next: [
+            {
+              action: CreateCartActions.attachLineItems,
+              noCompensation: true,
+            },
+            { action: CreateCartActions.attachToSalesChannel },
+          ],
         },
       },
     },
@@ -134,6 +138,10 @@ const handlers = new Map([
       invoke: pipe(
         {
           invoke: [
+            {
+              from: CreateCartActions.findSalesChannel,
+              alias: CartHandlers.createCart.aliases.SalesChannel,
+            },
             {
               from: CreateCartActions.findRegion,
               alias: CartHandlers.createCart.aliases.Region,
@@ -186,6 +194,38 @@ const handlers = new Map([
       ),
     },
   ],
+  [
+    CreateCartActions.attachToSalesChannel,
+    {
+      invoke: pipe(
+        {
+          invoke: [
+            {
+              from: CreateCartActions.createCart,
+              alias: CartHandlers.attachCartToSalesChannel.aliases.Cart,
+            },
+            {
+              from: CreateCartActions.findSalesChannel,
+              alias: CartHandlers.attachCartToSalesChannel.aliases.SalesChannel,
+            },
+          ],
+        },
+        CartHandlers.attachCartToSalesChannel
+      ),
+      compensate: pipe(
+        {
+          invoke: [
+            {
+              from: CreateCartActions.findSalesChannel,
+              alias:
+                CartHandlers.detachCartFromSalesChannel.aliases.SalesChannel,
+            },
+          ],
+        },
+        CartHandlers.detachCartFromSalesChannel
+      ),
+    },
+  ],
 ])
 
 WorkflowManager.register(Workflows.CreateCart, workflowSteps, handlers)