feat(customer): add customer group management apis (#6233)

**What**
```
POST /admin/customer-groups
POST /admin/customer-groups/:id
GET /admin/customer-groups/:id
DELETE /admin/customer-groups/:id
```

- Workflows

integration-tests/plugins/__tests__/customer-group/admin/create-customer-group.ts

@@ -0,0 +1,65 @@
+import { ModuleRegistrationName } from "@medusajs/modules-sdk"
+import { ICustomerModuleService } from "@medusajs/types"
+import path from "path"
+import { startBootstrapApp } from "../../../../environment-helpers/bootstrap-app"
+import { useApi } from "../../../../environment-helpers/use-api"
+import { getContainer } from "../../../../environment-helpers/use-container"
+import { initDb, useDb } from "../../../../environment-helpers/use-db"
+import adminSeeder from "../../../../helpers/admin-seeder"
+
+const env = { MEDUSA_FF_MEDUSA_V2: true }
+const adminHeaders = {
+  headers: { "x-medusa-access-token": "test_token" },
+}
+
+describe("POST /admin/customer-groups", () => {
+  let dbConnection
+  let appContainer
+  let shutdownServer
+  let customerModuleService: ICustomerModuleService
+
+  beforeAll(async () => {
+    const cwd = path.resolve(path.join(__dirname, "..", "..", ".."))
+    dbConnection = await initDb({ cwd, env } as any)
+    shutdownServer = await startBootstrapApp({ cwd, env })
+    appContainer = getContainer()
+    customerModuleService = appContainer.resolve(
+      ModuleRegistrationName.CUSTOMER
+    )
+  })
+
+  afterAll(async () => {
+    const db = useDb()
+    await db.shutdown()
+    await shutdownServer()
+  })
+
+  beforeEach(async () => {
+    await adminSeeder(dbConnection)
+  })
+
+  afterEach(async () => {
+    const db = useDb()
+    await db.teardown()
+  })
+
+  it("should create a customer group", async () => {
+    const api = useApi() as any
+    const response = await api.post(
+      `/admin/customer-groups`,
+      {
+        name: "VIP",
+      },
+      adminHeaders
+    )
+
+    expect(response.status).toEqual(200)
+    expect(response.data.customer_group).toEqual(
+      expect.objectContaining({
+        id: expect.any(String),
+        name: "VIP",
+        created_by: "admin_user",
+      })
+    )
+  })
+})

integration-tests/plugins/__tests__/customer-group/admin/delete-customer-group.ts

@@ -0,0 +1,65 @@
+import { ModuleRegistrationName } from "@medusajs/modules-sdk"
+import { ICustomerModuleService } from "@medusajs/types"
+import path from "path"
+import { startBootstrapApp } from "../../../../environment-helpers/bootstrap-app"
+import { useApi } from "../../../../environment-helpers/use-api"
+import { getContainer } from "../../../../environment-helpers/use-container"
+import { initDb, useDb } from "../../../../environment-helpers/use-db"
+import adminSeeder from "../../../../helpers/admin-seeder"
+
+const env = { MEDUSA_FF_MEDUSA_V2: true }
+const adminHeaders = {
+  headers: { "x-medusa-access-token": "test_token" },
+}
+
+describe("DELETE /admin/customer-groups/:id", () => {
+  let dbConnection
+  let appContainer
+  let shutdownServer
+  let customerModuleService: ICustomerModuleService
+
+  beforeAll(async () => {
+    const cwd = path.resolve(path.join(__dirname, "..", "..", ".."))
+    dbConnection = await initDb({ cwd, env } as any)
+    shutdownServer = await startBootstrapApp({ cwd, env })
+    appContainer = getContainer()
+    customerModuleService = appContainer.resolve(
+      ModuleRegistrationName.CUSTOMER
+    )
+  })
+
+  afterAll(async () => {
+    const db = useDb()
+    await db.shutdown()
+    await shutdownServer()
+  })
+
+  beforeEach(async () => {
+    await adminSeeder(dbConnection)
+  })
+
+  afterEach(async () => {
+    const db = useDb()
+    await db.teardown()
+  })
+
+  it("should delete a group", async () => {
+    const group = await customerModuleService.createCustomerGroup({
+      name: "VIP",
+    })
+
+    const api = useApi() as any
+    const response = await api.delete(
+      `/admin/customer-groups/${group.id}`,
+      adminHeaders
+    )
+
+    expect(response.status).toEqual(200)
+
+    const deletedCustomer = await customerModuleService.retrieveCustomerGroup(
+      group.id,
+      { withDeleted: true }
+    )
+    expect(deletedCustomer.deleted_at).toBeTruthy()
+  })
+})

integration-tests/plugins/__tests__/customer-group/admin/list-customer-groups.spec.ts

@@ -53,7 +53,7 @@ describe("GET /admin/customer-groups", () => {
 
     expect(response.status).toEqual(200)
     expect(response.data.count).toEqual(1)
-    expect(response.data.groups).toEqual([
+    expect(response.data.customer_groups).toEqual([
       expect.objectContaining({
         id: expect.any(String),
         name: "Test",

integration-tests/plugins/__tests__/customer-group/admin/retrieve-customer-group.ts

@@ -0,0 +1,65 @@
+import { ModuleRegistrationName } from "@medusajs/modules-sdk"
+import { ICustomerModuleService } from "@medusajs/types"
+import path from "path"
+import { startBootstrapApp } from "../../../../environment-helpers/bootstrap-app"
+import { useApi } from "../../../../environment-helpers/use-api"
+import { getContainer } from "../../../../environment-helpers/use-container"
+import { initDb, useDb } from "../../../../environment-helpers/use-db"
+import adminSeeder from "../../../../helpers/admin-seeder"
+
+const env = { MEDUSA_FF_MEDUSA_V2: true }
+const adminHeaders = {
+  headers: { "x-medusa-access-token": "test_token" },
+}
+
+describe("GET /admin/customer-groups/:id", () => {
+  let dbConnection
+  let appContainer
+  let shutdownServer
+  let customerModuleService: ICustomerModuleService
+
+  beforeAll(async () => {
+    const cwd = path.resolve(path.join(__dirname, "..", "..", ".."))
+    dbConnection = await initDb({ cwd, env } as any)
+    shutdownServer = await startBootstrapApp({ cwd, env })
+    appContainer = getContainer()
+    customerModuleService = appContainer.resolve(
+      ModuleRegistrationName.CUSTOMER
+    )
+  })
+
+  afterAll(async () => {
+    const db = useDb()
+    await db.shutdown()
+    await shutdownServer()
+  })
+
+  beforeEach(async () => {
+    await adminSeeder(dbConnection)
+  })
+
+  afterEach(async () => {
+    const db = useDb()
+    await db.teardown()
+  })
+
+  it("should retrieve customer group", async () => {
+    const group = await customerModuleService.createCustomerGroup({
+      name: "Test",
+    })
+
+    const api = useApi() as any
+    const response = await api.get(
+      `/admin/customer-groups/${group.id}`,
+      adminHeaders
+    )
+
+    expect(response.status).toEqual(200)
+    expect(response.data.customer_group).toEqual(
+      expect.objectContaining({
+        id: expect.any(String),
+        name: "Test",
+      })
+    )
+  })
+})

integration-tests/plugins/__tests__/customer-group/admin/update-customer-group.ts

@@ -0,0 +1,68 @@
+import { ModuleRegistrationName } from "@medusajs/modules-sdk"
+import { ICustomerModuleService } from "@medusajs/types"
+import path from "path"
+import { startBootstrapApp } from "../../../../environment-helpers/bootstrap-app"
+import { useApi } from "../../../../environment-helpers/use-api"
+import { getContainer } from "../../../../environment-helpers/use-container"
+import { initDb, useDb } from "../../../../environment-helpers/use-db"
+import adminSeeder from "../../../../helpers/admin-seeder"
+
+const env = { MEDUSA_FF_MEDUSA_V2: true }
+const adminHeaders = {
+  headers: { "x-medusa-access-token": "test_token" },
+}
+
+describe("POST /admin/customer-groups/:id", () => {
+  let dbConnection
+  let appContainer
+  let shutdownServer
+  let customerModuleService: ICustomerModuleService
+
+  beforeAll(async () => {
+    const cwd = path.resolve(path.join(__dirname, "..", "..", ".."))
+    dbConnection = await initDb({ cwd, env } as any)
+    shutdownServer = await startBootstrapApp({ cwd, env })
+    appContainer = getContainer()
+    customerModuleService = appContainer.resolve(
+      ModuleRegistrationName.CUSTOMER
+    )
+  })
+
+  afterAll(async () => {
+    const db = useDb()
+    await db.shutdown()
+    await shutdownServer()
+  })
+
+  beforeEach(async () => {
+    await adminSeeder(dbConnection)
+  })
+
+  afterEach(async () => {
+    const db = useDb()
+    await db.teardown()
+  })
+
+  it("should update a customer group", async () => {
+    const customer = await customerModuleService.createCustomerGroup({
+      name: "VIP",
+    })
+
+    const api = useApi() as any
+    const response = await api.post(
+      `/admin/customer-groups/${customer.id}`,
+      {
+        name: "regular",
+      },
+      adminHeaders
+    )
+
+    expect(response.status).toEqual(200)
+    expect(response.data.customer_group).toEqual(
+      expect.objectContaining({
+        id: expect.any(String),
+        name: "regular",
+      })
+    )
+  })
+})