MM-43529 - start freemium trial (#20163)

* MM-43529 - start freemium trial

* change the method to put

* Add unit testing for the request-trial-endpoint

* use correct require

* add the translation texts

* fix texts

* remove unnecessary log

* change response status code to forbidden when non cloud

Co-authored-by: Pablo Velez Vidal <pablo.velez@mattermost.com>

api4/cloud.go

@@ -41,6 +41,9 @@ func (api *API) InitCloud() {
 	api.BaseRoutes.Cloud.Handle("/subscription/invoices/{invoice_id:in_[A-Za-z0-9]+}/pdf", api.APISessionRequired(getSubscriptionInvoicePDF)).Methods("GET")
 	api.BaseRoutes.Cloud.Handle("/subscription", api.APISessionRequired(changeSubscription)).Methods("PUT")
 
+	// GET /api/v4/cloud/request-trial
+	api.BaseRoutes.Cloud.Handle("/request-trial", api.APISessionRequired(requestCloudTrial)).Methods("PUT")
+
 	// POST /api/v4/cloud/webhook
 	api.BaseRoutes.Cloud.Handle("/webhook", api.CloudAPIKeyRequired(handleCWSWebhook)).Methods("POST")
 }
@@ -121,6 +124,43 @@ func changeSubscription(c *Context, w http.ResponseWriter, r *http.Request) {
 	w.Write(json)
 }
 
+func requestCloudTrial(c *Context, w http.ResponseWriter, r *http.Request) {
+	if c.App.Channels().License() == nil || !*c.App.Channels().License().Features.Cloud {
+		c.Err = model.NewAppError("Api4.requestCloudTrial", "api.cloud.license_error", nil, "", http.StatusForbidden)
+		return
+	}
+
+	if !c.App.SessionHasPermissionTo(*c.AppContext.Session(), model.PermissionSysconsoleWriteBilling) {
+		c.SetPermissionError(model.PermissionSysconsoleWriteBilling)
+		return
+	}
+
+	if !c.App.Config().FeatureFlags.CloudFree {
+		c.Err = model.NewAppError("Api4.requestCloudTrial", "api.cloud.cloud_free_feature_flag_off_error", nil, "", http.StatusInternalServerError)
+		return
+	}
+
+	currentSubscription, appErr := c.App.Cloud().GetSubscription(c.AppContext.Session().UserId)
+	if appErr != nil {
+		c.Err = model.NewAppError("Api4.requestCloudTrial", "api.cloud.app_error", nil, appErr.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	changedSub, err := c.App.Cloud().RequestCloudTrial(c.AppContext.Session().UserId, currentSubscription.ID)
+	if err != nil {
+		c.Err = model.NewAppError("Api4.requestCloudTrial", "api.cloud.app_error", nil, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	json, err := json.Marshal(changedSub)
+	if err != nil {
+		c.Err = model.NewAppError("Api4.requestCloudTrial", "api.cloud.app_error", nil, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Write(json)
+}
+
 func getCloudProducts(c *Context, w http.ResponseWriter, r *http.Request) {
 	if c.App.Channels().License() == nil || !*c.App.Channels().License().Features.Cloud {
 		c.Err = model.NewAppError("Api4.getCloudProducts", "api.cloud.license_error", nil, "", http.StatusNotImplemented)