feat: update customer groups (#1075)

* update customer service prep

* expand on the update customer groups test case

* add the test case for customer group update

* docs for `groups` prop on update customer endpoint

* refactor, update comments

* expend on integration tests, add customer mock with a group

* refactor to use `customerGroupService.list` method

* update units

* remove `updateCustomerGroups`

* fix rebase conflict

* fix customer seed data, add JoinTable on groups

* group retrieval using the expand param

* fix: use `buildQuery_`

* fix: validation for `groups`, enable `expand`param on update customer endpoint

* fix: remove fileds form the `FilterableCustomerGroupProps`

* fix: spearate body/query validation

Co-authored-by: fPolic <frane@medusajs.com>

integration-tests/api/__tests__/admin/__snapshots__/customer.js.snap

@@ -62,6 +62,7 @@ Object {
   "deleted_at": null,
   "email": "test1@email.com",
   "first_name": null,
+  "groups": Array [],
   "has_account": false,
   "id": "test-customer-1",
   "last_name": null,

integration-tests/api/__tests__/admin/customer.js

@@ -56,7 +56,7 @@ describe("/admin/customers", () => {
         })
 
       expect(response.status).toEqual(200)
-      expect(response.data.count).toEqual(4)
+      expect(response.data.count).toEqual(5)
       expect(response.data.customers).toEqual(
         expect.arrayContaining([
           expect.objectContaining({
@@ -228,6 +228,106 @@ describe("/admin/customers", () => {
         })
       )
     })
+
+    it("Correctly updates customer groups", async () => {
+      const api = useApi()
+      let response = await api
+        .post(
+          "/admin/customers/test-customer-3?expand=groups",
+          {
+            groups: [{ id: "test-group-4" }],
+          },
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((err) => {
+          console.log(err)
+        })
+
+      expect(response.status).toEqual(200)
+      expect(response.data.customer.groups).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({ id: "test-group-4", name: "test-group-4" }),
+        ])
+      )
+
+      // Try adding a non existing group
+
+      response = await api
+        .post(
+          "/admin/customers/test-customer-3?expand=groups",
+          {
+            groups: [{ id: "test-group-4" }, { id: "fake-group-0" }],
+          },
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((err) => {
+          console.log(err)
+        })
+
+      expect(response.status).toEqual(200)
+      expect(response.data.customer.groups.length).toEqual(1)
+      expect(response.data.customer.groups).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({ id: "test-group-4", name: "test-group-4" }),
+        ])
+      )
+
+      // Delete all groups
+
+      response = await api
+        .post(
+          "/admin/customers/test-customer-3?expand=groups",
+          {
+            groups: [],
+          },
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((err) => {
+          console.log(err)
+        })
+
+      expect(response.status).toEqual(200)
+      expect(response.data.customer.groups.length).toEqual(0)
+
+      // Adding a group to a customer with already existing groups.
+
+      response = await api
+        .post(
+          "/admin/customers/test-customer-5?expand=groups",
+          {
+            groups: [{ id: "test-group-5" }, { id: "test-group-4" }],
+          },
+          {
+            headers: {
+              Authorization: "Bearer test_token",
+            },
+          }
+        )
+        .catch((err) => {
+          console.log(err)
+        })
+
+      expect(response.status).toEqual(200)
+      expect(response.data.customer.groups.length).toEqual(2)
+      expect(response.data.customer.groups).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({ id: "test-group-4", name: "test-group-4" }),
+          expect.objectContaining({ id: "test-group-5", name: "test-group-5" }),
+        ])
+      )
+    })
   })
 
   describe("GET /admin/customers/:id", () => {
@@ -278,7 +378,7 @@ describe("/admin/customers", () => {
       const api = useApi()
 
       const response = await api
-        .get("/admin/customers/test-customer-1?expand=billing_address", {
+        .get("/admin/customers/test-customer-1?expand=billing_address,groups", {
           headers: {
             Authorization: "Bearer test_token",
           },
@@ -295,6 +395,7 @@ describe("/admin/customers", () => {
           created_at: expect.any(String),
           updated_at: expect.any(String),
         },
+        groups: [],
         created_at: expect.any(String),
         updated_at: expect.any(String),
       })