[MM-51236] - Add opt-in checkbox in self-hosted account creation page (#22709)

* [MM-51236] - Add opt-in checkbox in self-hosted account creation page

* add server impl

* fix lint and translations

* add tests

* improvents

* fix model

* fix mocks

* feedback impl

* update text color

* handle error

* fix tests

server/channels/api4/hosted_customer.go

@@ -36,6 +36,8 @@ func (api *API) InitHostedCustomer() {
 	api.BaseRoutes.HostedCustomer.Handle("/invoices", api.APISessionRequired(selfHostedInvoices)).Methods("GET")
 	// GET /api/v4/hosted_customer/invoices/{invoice_id:in_[A-Za-z0-9]+}/pdf
 	api.BaseRoutes.HostedCustomer.Handle("/invoices/{invoice_id:in_[A-Za-z0-9]+}/pdf", api.APISessionRequired(selfHostedInvoicePDF)).Methods("GET")
+
+	api.BaseRoutes.HostedCustomer.Handle("/subscribe-newsletter", api.APIHandler(handleSubscribeToNewsletter)).Methods(http.MethodPost)
 }
 
 func ensureSelfHostedAdmin(c *Context, where string) {
@@ -293,3 +295,33 @@ func selfHostedInvoicePDF(c *Context, w http.ResponseWriter, r *http.Request) {
 		r,
 	)
 }
+
+func handleSubscribeToNewsletter(c *Context, w http.ResponseWriter, r *http.Request) {
+	const where = "Api4.handleSubscribeToNewsletter"
+	ensured := ensureCloudInterface(c, where)
+	if !ensured {
+		return
+	}
+
+	bodyBytes, err := io.ReadAll(r.Body)
+	if err != nil {
+		c.Err = model.NewAppError(where, "api.cloud.app_error", nil, "", http.StatusBadRequest).Wrap(err)
+		return
+	}
+
+	req := new(model.SubscribeNewsletterRequest)
+	err = json.Unmarshal(bodyBytes, req)
+	if err != nil {
+		c.Err = model.NewAppError(where, "api.cloud.request_error", nil, "", http.StatusBadRequest).Wrap(err)
+		return
+	}
+
+	req.ServerID = c.App.Srv().TelemetryId()
+
+	if err := c.App.Cloud().SubscribeToNewsletter("", req); err != nil {
+		c.Err = model.NewAppError(where, "api.server.cws.subscribe_to_newsletter.app_error", nil, "CWS Server failed to subscribe to newsletter.", http.StatusInternalServerError).Wrap(err)
+		return
+	}
+
+	ReturnStatusOK(w)
+}

server/channels/einterfaces/cloud.go

@@ -47,4 +47,5 @@ type CloudInterface interface {
 	CheckCWSConnection(userId string) error
 
 	SelfServeDeleteWorkspace(userID string, deletionRequest *model.WorkspaceDeletionRequest) error
+	SubscribeToNewsletter(userID string, req *model.SubscribeNewsletterRequest) error
 }

server/channels/einterfaces/mocks/CloudInterface.go

@@ -540,6 +540,20 @@ func (_m *CloudInterface) SelfServeDeleteWorkspace(userID string, deletionReques
 	return r0
 }
 
+// SubscribeToNewsletter provides a mock function with given fields: userID, req
+func (_m *CloudInterface) SubscribeToNewsletter(userID string, req *model.SubscribeNewsletterRequest) error {
+	ret := _m.Called(userID, req)
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(string, *model.SubscribeNewsletterRequest) error); ok {
+		r0 = rf(userID, req)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
 // UpdateCloudCustomer provides a mock function with given fields: userID, customerInfo
 func (_m *CloudInterface) UpdateCloudCustomer(userID string, customerInfo *model.CloudCustomerInfo) (*model.CloudCustomer, error) {
 	ret := _m.Called(userID, customerInfo)

server/i18n/en.json

@@ -2591,6 +2591,10 @@
     "id": "api.server.cws.needs_enterprise_edition",
     "translation": "Service only available in Mattermost Enterprise edition"
   },
+  {
+    "id": "api.server.cws.subscribe_to_newsletter.app_error",
+    "translation": "CWS Server failed to subscribe to newsletter."
+  },
   {
     "id": "api.server.hosted_signup_unavailable.error",
     "translation": "Portal unavailable for self-hosted signup."