Stripe: upgrade module and API, switch to Checkout (#12785)

* upgrade stripe module

* switch stripe api to latest version

* fix api version in tests

* start upgrading client and server

* client: switch to redirect

* implement checkout session creation for gems, start implementing webhooks

* stripe: start refactoring one time payments

* working gems and gift payments

* start adding support for subscriptions

* stripe: migrate subscriptions and fix cancelling sub

* allow upgrading group plans

* remove console.log statements

* group plans: upgrade from static page / create new one

* fix #11885, correct group plan modal title

* silence more stripe webhooks

* fix group plans redirects

* implement editing payment method

* start cleaning up code

* fix(stripe): update in-code docs, fix eslint issues

* subscriptions tests

* remove and skip old tests

* skip integration tests

* fix client build

* stripe webhooks: throw error if request fails

* subscriptions: correctly pass groupId

* remove console.log

* stripe: add unit tests for one time payments

* wip: stripe checkout tests

* stripe createCheckoutSession unit tests

* stripe createCheckoutSession unit tests

* stripe createCheckoutSession unit tests (editing card)

* fix existing webhooks tests

* add new webhooks tests

* add more webhooks tests

* fix lint

* stripe integration tests

* better error handling when retrieving customer from stripe

* client: remove unused strings and improve error handling

* payments: limit gift message length (server)

* payments: limit gift message length (client)

* fix redirects when payment is cancelled

* add back "subUpdateCard" string

* fix redirects when editing a sub card, use proper names for products, check subs when gifting

website/server/controllers/api-v3/groups.js

@@ -198,8 +198,7 @@ api.createGroupPlan = {
     const results = await Promise.all([user.save(), group.save()]);
     const savedGroup = results[1];
 
-    // Analytics
-    const analyticsObject = {
+    res.analytics.track('join group', {
       uuid: user._id,
       hitType: 'event',
       category: 'behavior',
@@ -207,27 +206,31 @@ api.createGroupPlan = {
       groupType: savedGroup.type,
       privacy: savedGroup.privacy,
       headers: req.headers,
+    });
+
+    // do not remove chat flags data as we've just created the group
+    const groupResponse = savedGroup.toJSON();
+    // the leader is the authenticated user
+    groupResponse.leader = {
+      _id: user._id,
+      profile: { name: user.profile.name },
     };
-    res.analytics.track('join group', analyticsObject);
 
     if (req.body.paymentType === 'Stripe') {
-      const token = req.body.id;
-      const gift = req.query.gift ? JSON.parse(req.query.gift) : undefined;
-      const sub = req.query.sub ? common.content.subscriptionBlocks[req.query.sub] : false;
-      const groupId = savedGroup._id;
-      const { email } = req.body;
-      const { headers } = req;
-      const { coupon } = req.query;
+      const {
+        gift, sub: subKey, gemsBlock, coupon,
+      } = req.body;
 
-      await stripePayments.checkout({
-        token,
-        user,
-        gift,
-        sub,
-        groupId,
-        email,
-        headers,
-        coupon,
+      const sub = subKey ? common.content.subscriptionBlocks[subKey] : false;
+      const groupId = savedGroup._id;
+
+      const session = await stripePayments.createCheckoutSession({
+        user, gemsBlock, gift, sub, groupId, coupon, headers: req.headers,
+      });
+
+      res.respond(200, {
+        sessionId: session.id,
+        group: groupResponse,
       });
     } else if (req.body.paymentType === 'Amazon') {
       const { billingAgreementId } = req.body;
@@ -246,19 +249,9 @@ api.createGroupPlan = {
         groupId,
         headers,
       });
+
+      res.respond(201, groupResponse);
     }
-
-    // Instead of populate we make a find call manually because of https://github.com/Automattic/mongoose/issues/3833
-    // await Q.ninvoke(savedGroup, 'populate', ['leader', nameFields]);
-    // doc.populate doesn't return a promise
-    const response = savedGroup.toJSON();
-    // the leader is the authenticated user
-    response.leader = {
-      _id: user._id,
-      profile: { name: user.profile.name },
-    };
-
-    res.respond(201, response); // do not remove chat flags data as we've just created the group
   },
 };