(core) add a way to change subdomain in billing pages

Summary:
This adds an `updateDomain` billing task that allows editing
the subdomain (and the org name, which is also editable with
the address).

A warning is shown that changing the subdomain will mean that
saved links need updating.

Test Plan: added test

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2988

app/client/models/BillingModel.ts

@@ -175,17 +175,22 @@ export class BillingModelImpl extends Disposable implements BillingModel {
           }
           // If there is an org update, re-initialize the org in the client.
           if (newSettings) { this._appModel.topAppModel.initialize(); }
-        } else if (task === 'signUpLite') {
+        } else if (task === 'signUpLite' || task === 'updateDomain') {
-          // This is a sign up variant where payment info is handled externally.
           // All that can change here is company name, and domain.
           const org = this._appModel.currentOrg;
           const name = formData.settings && formData.settings.name;
           const domain = formData.settings && formData.settings.domain;
-          const newSettings = org && (name !== org.name || domain !== org.domain) && formData.settings;
+          const newDomain = domain !== org?.domain;
+          const newSettings = org && (name !== org.name || newDomain) && formData.settings;
           // If the address or settings have a new value, run the update.
           if (newSettings) {
             await this._billingAPI.updateAddress(undefined, newSettings || undefined);
           }
+          // If the domain has changed, should redirect page.
+          if (newDomain) {
+            window.location.assign(urlState().makeUrl({ org: domain, billing: 'billing', params: undefined }));
+            return;
+          }
           // If there is an org update, re-initialize the org in the client.
           if (newSettings) { this._appModel.topAppModel.initialize(); }
         } else {

app/client/ui/BillingForm.ts

@@ -389,11 +389,11 @@ class BillingSettingsForm extends BillingSubForm {
 
   public buildDom() {
     const noEditAccess = Boolean(this._org && !roles.canEdit(this._org.access));
+    const hasDomain = Boolean(this._options.autofill?.domain);
     return css.paymentBlock(
       this._options.showHeader ? css.paymentSubHeader('Team Site') : null,
       css.paymentRow(
         css.paymentField(
-          css.paymentLabel('Company Name'),
           this.billingInput(this._name,
             dom.boolAttr('disabled', () => noEditAccess),
             testId('settings-name')
@@ -410,11 +410,10 @@ class BillingSettingsForm extends BillingSubForm {
             dom.boolAttr('disabled', () => noEditAccess),
             testId('settings-domain')
           ),
-          // Note that we already do not allow editing the domain after it is initially set
-          // anyway, this is just here for consistency.
           noEditAccess ? css.paymentFieldInfo('Organization edit access is required',
             testId('settings-domain-info')
-          ) : null
+          ) : null,
+          hasDomain ? css.paymentFieldDanger('Any saved links will need updating if the URL changes') : null,
         ),
         css.paymentField({style: 'flex: 0 1 0;'},
           css.inputHintLabel('.getgrist.com')
@@ -442,6 +441,8 @@ class BillingSettingsForm extends BillingSubForm {
 
   // Throws if the entered domain contains any invalid characters or is already taken.
   private async _verifyDomain(domain: string): Promise<void> {
+    // OK to retain current domain.
+    if (domain === this._options.autofill?.domain) { return; }
     checkSubdomainValidity(domain);
     const isAvailable = await this._isDomainAvailable(domain);
     if (!isAvailable) { throw new Error('Domain is already taken.'); }

app/client/ui/BillingPage.ts

@@ -26,7 +26,8 @@ const taskActions = {
   addCard:       'Add Payment Method',
   updateCard:    'Update Payment Method',
   updateAddress: 'Update Address',
-  signUpLite:    'Complete Sign Up'
+  signUpLite:    'Complete Sign Up',
+  updateDomain:  'Update Name',
 };
 
 /**
@@ -357,7 +358,10 @@ export class BillingPage extends Disposable {
 
   private _buildBillingForm(org: Organization|null, address: IBillingAddress|null, task: BillingTask) {
     const isSharedOrg = org && org.billingAccount && !org.billingAccount.individual;
-    const currentSettings = isSharedOrg ? { name: org!.name } : this._formData.settings;
+    const currentSettings = isSharedOrg ? {
+      name: org!.name,
+      domain: org?.domain?.startsWith('o-') ? undefined : org?.domain || undefined,
+    } : this._formData.settings;
     const currentAddress = address || this._formData.address;
     const pageText = taskActions[task];
     // If there is an immediate charge required, require re-entering the card info.
@@ -365,8 +369,8 @@ export class BillingPage extends Disposable {
     this._form = new BillingForm(org, (...args) => this._model.isDomainAvailable(...args), {
       payment: ['signUp', 'updatePlan', 'addCard', 'updateCard'].includes(task),
       address: ['signUp', 'updateAddress'].includes(task),
-      settings: ['signUp', 'signUpLite', 'updateAddress'].includes(task),
+      settings: ['signUp', 'signUpLite', 'updateAddress', 'updateDomain'].includes(task),
-      domain: ['signUp', 'signUpLite'].includes(task)
+      domain: ['signUp', 'signUpLite', 'updateDomain'].includes(task)
     }, { address: currentAddress, settings: currentSettings, card: this._formData.card });
     return dom('div',
       dom.onDispose(() => {
@@ -384,7 +388,7 @@ export class BillingPage extends Disposable {
   private _buildPaymentConfirmation(formData: IFormData) {
     const settings = formData.settings || null;
     return [
-      this._buildDomainSummary(settings && settings.domain),
+      this._buildDomainSummary(settings && settings.domain, false),
       this._buildCompanySummary(settings && settings.name, formData.address || null, false),
       this._buildCardSummary(formData.card || null)
     ];
@@ -499,9 +503,9 @@ export class BillingPage extends Disposable {
     );
   }
 
-  private _buildDomainSummary(domain: string|null) {
+  private _buildDomainSummary(domain: string|null, showEdit: boolean = true) {
     const task = this._model.currentTask.get();
-    if (task === 'signUpLite') { return null; }
+    if (task === 'signUpLite' || task === 'updateDomain') { return null; }
     return css.summaryItem(
       css.summaryHeader(
         css.billingBoldText('Billing Info'),
@@ -512,7 +516,14 @@ export class BillingPage extends Disposable {
             dom('span', {style: 'font-weight: bold'}, domain),
             `.getgrist.com`,
             testId('org-domain')
-          )
+          ),
+          showEdit ? css.billingTextBtn(css.billingIcon('Settings'), 'Change',
+            urlState().setLinkUrl({
+              billing: 'payment',
+              params: { billingTask: 'updateDomain' }
+            }),
+            testId('update-domain')
+          ) : null
         )
       ] : null
     );
@@ -619,6 +630,8 @@ export class BillingPage extends Disposable {
       return makeSummaryFeature('You are updating the default payment method');
     } else if (task === 'updateAddress') {
       return makeSummaryFeature('You are updating the company name and address');
+    } else if (task === 'updateDomain') {
+      return makeSummaryFeature('You are updating the company name and domain');
     } else {
       return null;
     }

app/client/ui/BillingPageCss.ts

@@ -242,6 +242,11 @@ export const paymentFieldInfo = styled('div', `
   margin: 10px 0;
 `);
 
+export const paymentFieldDanger = styled('div', `
+  color: #ffa500;
+  margin: 10px 0;
+`);
+
 export const paymentSpacer = styled('div', `
   width: 38px;
 `);

app/common/BillingAPI.ts

@@ -10,7 +10,8 @@ export type BillingSubPage = typeof BillingSubPage.type;
 export const BillingPage = StringUnion(...BillingSubPage.values, 'billing');
 export type BillingPage = typeof BillingPage.type;
 
-export const BillingTask = StringUnion('signUp', 'signUpLite', 'updatePlan', 'addCard', 'updateCard', 'updateAddress');
+export const BillingTask = StringUnion('signUp', 'signUpLite', 'updatePlan', 'addCard',
+                                       'updateCard', 'updateAddress', 'updateDomain');
 export type BillingTask = typeof BillingTask.type;
 
 // Note that IBillingPlan includes selected fields from the Stripe plan object along with