Add new Subscriptions API for extending/reactivating trial

ee/app/assets/javascripts/api/subscriptions_api.js

@@ -2,6 +2,12 @@ import { buildApiUrl } from '~/api/api_utils';
 import axios from '~/lib/utils/axios_utils';
 
 const SUBSCRIPTIONS_PATH = '/api/:version/subscriptions';
+const EXTEND_REACTIVATE_TRIAL_PATH = '/-/trials/extend_reactivate';
+
+const TRIAL_EXTENSION_TYPE = Object.freeze({
+  extended: 1,
+  reactivated: 2,
+});
 
 export function createSubscription(groupId, customer, subscription) {
   const url = buildApiUrl(SUBSCRIPTIONS_PATH);
@@ -13,3 +19,25 @@ export function createSubscription(groupId, customer, subscription) {
 
   return axios.post(url, { params });
 }
+
+const updateTrial = async (namespaceId, trialExtensionType) => {
+  if (!Object.values(TRIAL_EXTENSION_TYPE).includes(trialExtensionType)) {
+    throw new TypeError('The "trialExtensionType" argument is invalid.');
+  }
+
+  const url = buildApiUrl(EXTEND_REACTIVATE_TRIAL_PATH);
+  const params = {
+    namespace_id: namespaceId,
+    trial_extension_type: trialExtensionType,
+  };
+
+  return axios.put(url, params);
+};
+
+export const extendTrial = async (namespaceId) => {
+  return updateTrial(namespaceId, TRIAL_EXTENSION_TYPE.extended);
+};
+
+export const reactivateTrial = async (namespaceId) => {
+  return updateTrial(namespaceId, TRIAL_EXTENSION_TYPE.reactivated);
+};