(core) Improve the look and behavior of /welcome/teams page (also shown for /welcome/start)

Summary:
- Move css module for the login page css to core/, to be reusable in core/ pages.
- Move /welcome/teams implementation to WelcomeSitePicker.ts
- List users for personal sites, as well as team sites.
- Add org param to setSessionActive() API method and end endpoint, to allow
  switching the specified org to another user.
- Add a little safety to getOrgUrl() function.

Test Plan: Added a test case for the new behaviors of the /welcome/teams page.

Reviewers: georgegevoian

Reviewed By: georgegevoian

Differential Revision: https://phab.getgrist.com/D3914

app/client/ui/LoginPagesCss.ts

@@ -0,0 +1,216 @@
+import {bigPrimaryButton as gristBigPrimaryButton,
+        bigPrimaryButtonLink as gristBigPrimaryButtonLink,
+        textButton as gristTextButton} from 'app/client/ui2018/buttons';
+import {colors, mediaXSmall, theme} from 'app/client/ui2018/cssVars';
+import {textInput} from 'app/client/ui/inputs';
+import {styled} from 'grainjs';
+
+export const text = styled('div', `
+  color: ${theme.text};
+  font-weight: 400;
+  line-height: 20px;
+  font-size: 14px;
+`);
+
+export const lightText = styled(text, `
+  color: ${theme.lightText};
+`);
+
+export const lightColor = styled('span', `
+  color: ${theme.lightText};
+`);
+
+export const centeredText = styled(text, `
+  text-align: center;
+`);
+
+export const lightlyBolded = styled('span', `
+  font-weight: 500;
+`);
+
+export const input = textInput;
+
+export const codeInput = styled(input, `
+  width: 200px;
+`);
+
+export const label = styled('label', `
+  color: ${theme.text};
+  display: inline-block;
+  line-height: 20px;
+  font-size: 14px;
+  font-weight: 500;
+`);
+
+export const formLabel = styled(label, `
+  margin-bottom: 8px;
+`);
+
+export const googleButton = styled('button', `
+  /* Resets */
+  position: relative;
+  border-style: none;
+
+  /* Vars */
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  height: 48px;
+  gap: 12px;
+  font-size: 15px;
+  font-weight: 500;
+  line-height: 16px;
+  padding: 16px;
+  color: ${colors.dark};
+  background-color: ${colors.lightGrey};
+  border: 1px solid ${colors.darkGrey};
+  border-radius: 4px;
+  cursor: pointer;
+  width: 100%;
+
+  &:hover {
+    background-color: ${colors.mediumGrey};
+  }
+`);
+
+export const image = styled('div', `
+  display: inline-block;
+  background-size: contain;
+  background-repeat: no-repeat;
+  background-position: center;
+`);
+
+export const gristLogo = styled(image, `
+  width: 100%;
+  height: 32px;
+  background-image: var(--icon-GristLogo);
+`);
+
+export const googleLogo = styled(image, `
+  width: 24px;
+  height: 24px;
+  background-image: var(--icon-GoogleLogo);
+`);
+
+export const loginMethodsSeparator = styled('div', `
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin: 24px 0px 24px 0px;
+`);
+
+export const horizontalLine = styled('hr', `
+  border: 1px solid ${theme.loginPageLine};
+  flex-grow: 1;
+`);
+
+/**
+ * TODO: Consider using our own outline.
+ *
+ * We revert here to improve accessibility on the login pages. We could also
+ * leave the default outline alone, since it doesn't seem to appear on
+ * click anymore (in modern browsers, at least).
+ */
+export const bigPrimaryButton = styled(gristBigPrimaryButton, `
+  outline: revert;
+  font-weight: 500;
+  height: 48px;
+  font-size: 15px;
+  line-height: 16px;
+`);
+
+export const bigPrimaryButtonLink = styled(gristBigPrimaryButtonLink, `
+  outline: revert;
+  padding: 16px 32px 16px 32px;
+  font-weight: 500;
+  font-size: 15px;
+  line-height: 16px;
+`);
+
+export const textButton = styled(gristTextButton, `
+  outline: revert;
+  font-size: 14px;
+`);
+
+export const pageContainer = styled('div', `
+  min-height: 100%;
+  background-color: ${theme.loginPageBackdrop};
+
+  @media ${mediaXSmall} {
+    & {
+      background-color: ${theme.loginPageBg};
+    }
+  }
+`);
+
+export const centeredFlexContainer = styled('div', `
+  display: flex;
+  justify-content: center;
+`);
+
+export const formContainer = styled('div', `
+  background-color: ${theme.loginPageBg};
+  max-width: 576px;
+  width: 100%;
+  margin: 60px 25px 60px 25px;
+  padding: 40px 56px 40px 56px;
+  border-radius: 8px;
+
+  @media ${mediaXSmall} {
+    & {
+      margin: 0px;
+      padding: 25px 20px 25px 20px;
+    }
+  }
+`);
+
+export const formHeading = styled('div', `
+  font-weight: 500;
+  font-size: 32px;
+  line-height: 40px;
+  margin-bottom: 8px;
+  color: ${theme.text};
+
+  @media ${mediaXSmall} {
+    & {
+      font-size: 24px;
+      line-height: 32px;
+      margin-bottom: 16px;
+    }
+  }
+`);
+
+export const formInstructions = styled('div', `
+  margin-bottom: 32px;
+`);
+
+export const formError = styled(text, `
+  color: ${theme.errorText};
+  margin-bottom: 16px;
+`);
+
+export const centeredFormError = styled(formError, `
+  text-align: center;
+`);
+
+export const formButtons = styled('div', `
+  margin: 32px 0px 0px 0px;
+`);
+
+export const formFooter = styled(text, `
+  margin-top: 24px;
+`);
+
+export const formBody = styled('div', ``);
+
+export const resendCode = styled(text, `
+  margin-top: 16px;
+`);
+
+export const spinner = styled('div', `
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  width: 100%;
+  height: 250px;
+`);

app/client/ui/WelcomePage.ts

@@ -1,7 +1,7 @@
 import { Disposable, dom, domComputed, DomContents, MultiHolder, Observable, styled } from "grainjs";
 
 import { handleSubmit, submitForm } from "app/client/lib/formUtils";
-import { AppModel, reportError } from "app/client/models/AppModel";
+import { AppModel } from "app/client/models/AppModel";
 import { getLoginUrl, getSignupUrl, urlState } from "app/client/models/gristUrlState";
 import { AccountWidget } from "app/client/ui/AccountWidget";
 import { AppHeader } from 'app/client/ui/AppHeader';
@@ -10,11 +10,11 @@ import { pagePanels } from "app/client/ui/PagePanels";
 import { createUserImage } from 'app/client/ui/UserImage';
 import { cssMemberImage, cssMemberListItem, cssMemberPrimary,
          cssMemberSecondary, cssMemberText } from 'app/client/ui/UserItem';
-import { basicButtonLink, bigBasicButtonLink, bigPrimaryButton, bigPrimaryButtonLink,
-         cssButton } from "app/client/ui2018/buttons";
+import { buildWelcomeSitePicker } from 'app/client/ui/WelcomeSitePicker';
+import { basicButtonLink, bigBasicButtonLink, bigPrimaryButton } from "app/client/ui2018/buttons";
 import { mediaSmall, testId, theme, vars } from "app/client/ui2018/cssVars";
 import { cssLink } from "app/client/ui2018/links";
-import { getOrgName, Organization } from "app/common/UserAPI";
+import { WelcomePage as WelcomePageEnum } from 'app/common/gristUrls';
 
 // Redirect from ..../welcome/thing to .../welcome/${name}
 function _redirectToSiblingPage(name: string) {
@@ -36,14 +36,15 @@ function handleSubmitForm(
 
 export class WelcomePage extends Disposable {
 
-  private _orgs: Organization[];
-  private _orgsLoaded = Observable.create(this, false);
-
   constructor(private _appModel: AppModel) {
     super();
   }
 
   public buildDom() {
+    return domComputed(urlState().state, state => this._buildDomInPagePanels(state.welcome));
+  }
+
+  private _buildDomInPagePanels(page?: WelcomePageEnum) {
     return pagePanels({
       leftPanel: {
         panelWidth: Observable.create(this, 240),
@@ -53,22 +54,21 @@ export class WelcomePage extends Disposable {
         content: null,
       },
       headerMain: [cssFlexSpace(), dom.create(AccountWidget, this._appModel)],
-      contentMain: this.buildPageContent()
+      contentMain: (
+        page === 'teams' ? dom.create(buildWelcomeSitePicker, this._appModel) :
+        this._buildPageContent(page)
+      ),
     });
   }
 
-  public buildPageContent(): Element {
+  private _buildPageContent(page?: WelcomePageEnum): Element {
     return cssScrollContainer(cssContainer(
       cssTitle('Welcome to Grist'),
       testId('welcome-page'),
-
-      domComputed(urlState().state, (state) => (
-        state.welcome === 'signup' ? dom.create(this._buildSignupForm.bind(this)) :
-        state.welcome === 'verify' ? dom.create(this._buildVerifyForm.bind(this)) :
-        state.welcome === 'teams' ? dom.create(this._buildOrgPicker.bind(this)) :
-        state.welcome === 'select-account' ? dom.create(this._buildAccountPicker.bind(this)) :
-        null
-      )),
+      page === 'signup' ? dom.create(this._buildSignupForm.bind(this)) :
+      page === 'verify' ? dom.create(this._buildVerifyForm.bind(this)) :
+      page === 'select-account' ? dom.create(this._buildAccountPicker.bind(this)) :
+      null
     ));
   }
 
@@ -189,44 +189,6 @@ export class WelcomePage extends Disposable {
     );
   }
 
-  private async _fetchOrgs() {
-    this._orgs = await this._appModel.api.getOrgs(true);
-    this._orgsLoaded.set(true);
-  }
-
-
-  private _buildOrgPicker(): DomContents {
-    this._fetchOrgs().catch(reportError);
-    return dom.maybe(this._orgsLoaded, () => {
-      let orgs = this._orgs;
-      if (orgs && orgs.length > 1) {
-
-        // Let's make sure that the first org is not the personal org.
-        if (orgs[0].owner) {
-          orgs = [...orgs.slice(1), orgs[0]];
-        }
-
-        return [
-          cssParagraph(
-            "You've been added to a team. ",
-            "Go to the team site, or to your personal site."
-          ),
-          cssParagraph(
-            "You can always switch sites using the account menu in the top-right corner."
-          ),
-          orgs.map((org, i) => (
-            cssOrgButton(
-              getOrgName(org),
-              urlState().setLinkUrl({org: org.domain || undefined}),
-              testId('org'),
-              i ? cssButton.cls('-primary', false) : null
-            )
-          )),
-        ];
-      }
-    });
-  }
-
   private _buildAccountPicker(): DomContents {
     function addUserToLink(email: string): string {
       const next = new URLSearchParams(location.search).get('next') || '';
@@ -333,15 +295,3 @@ const cssInput = styled(textInput, `
   padding: 13px;
   border-radius: 3px;
 `);
-
-const cssOrgButton = styled(bigPrimaryButtonLink, `
-  margin: 0 0 8px;
-  width: 200px;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-  overflow: hidden;
-
-  &:first-of-type {
-    margin-top: 16px;
-  }
-`);

app/client/ui/WelcomeSitePicker.ts

@@ -0,0 +1,116 @@
+import { makeT } from 'app/client/lib/localization';
+import { AppModel } from "app/client/models/AppModel";
+import { urlState} from "app/client/models/gristUrlState";
+import { createUserImage } from 'app/client/ui/UserImage';
+import { bigBasicButtonLink } from "app/client/ui2018/buttons";
+import { testId, theme } from "app/client/ui2018/cssVars";
+import { FullUser } from 'app/common/LoginSessionAPI';
+import { getOrgName } from "app/common/UserAPI";
+import * as css from 'app/client/ui/LoginPagesCss';
+import { Computed, dom, DomContents, IDisposableOwner, styled } from "grainjs";
+
+const t = makeT('WelcomeSitePicker');
+
+export function buildWelcomeSitePicker(owner: IDisposableOwner, appModel: AppModel): DomContents {
+  // We assume that there is a single domain for personal orgs, and will show a button to open
+  // that domain with each of the currently signed-in users.
+  const personalOrg = Computed.create(owner, (use) =>
+    use(appModel.topAppModel.orgs).find(o => Boolean(o.owner))?.domain || undefined);
+
+  return cssPageContainer(
+    testId('welcome-page'),
+    css.centeredFlexContainer(
+      css.formContainer(
+        css.gristLogo(),
+        cssHeading(t('Welcome back')),
+        cssMessage(t('You have access to the following Grist sites.')),
+        cssColumns(
+          cssColumn(
+            cssColumnLabel(css.horizontalLine(), css.lightText('Personal'), css.horizontalLine()),
+            dom.forEach(appModel.topAppModel.users, (user) => (
+              cssOrgButton(
+                cssPersonalOrg(
+                  createUserImage(user, 'small'),
+                  dom('div', user.email, testId('personal-org-email')),
+                ),
+                dom.attr('href', (use) => urlState().makeUrl({org: use(personalOrg)})),
+                dom.on('click', (ev) => { void(switchToPersonalUrl(ev, appModel, personalOrg.get(), user)); }),
+                testId('personal-org'),
+              )
+            )),
+          ),
+          cssColumn(
+            cssColumnLabel(css.horizontalLine(), css.lightText('Team'), css.horizontalLine()),
+            dom.forEach(appModel.topAppModel.orgs, (org) => (
+              org.owner || !org.domain ? null : cssOrgButton(
+                getOrgName(org),
+                urlState().setLinkUrl({org: org.domain}),
+                testId('org'),
+              )
+            )),
+          )
+        ),
+        cssMessage(t("You can always switch sites using the account menu.")),
+      )
+    )
+  );
+}
+
+// TODO This works but not for opening a link in a new tab. We currently lack and endpoint that
+// would enable opening a link as a particular user, or to switch user and open as them.
+async function switchToPersonalUrl(ev: MouseEvent, appModel: AppModel, org: string|undefined, user: FullUser) {
+  // Only handle plain-vanilla clicks.
+  if (ev.shiftKey || ev.metaKey || ev.ctrlKey || ev.altKey) { return; }
+  ev.preventDefault();
+  // Set the active session for the given org, then load its home page.
+  await appModel.api.setSessionActive(user.email, org);
+  window.location.assign(urlState().makeUrl({org}));
+}
+
+const cssPageContainer = styled(css.pageContainer, `
+  overflow: auto;
+  padding-bottom: 40px;
+`);
+
+const cssHeading = styled(css.formHeading, `
+  margin-top: 16px;
+  text-align: center;
+`);
+
+const cssMessage = styled(css.centeredText, `
+  margin: 24px 0;
+`);
+
+const cssColumns = styled('div', `
+  display: flex;
+  flex-wrap: wrap;
+  gap: 32px;
+`);
+
+const cssColumn = styled('div', `
+  flex: 1 0 0px;
+  min-width: 200px;
+  position: relative;
+`);
+
+const cssColumnLabel = styled('div', `
+  display: flex;
+  align-items: center;
+  gap: 8px;
+`);
+
+const cssOrgButton = styled(bigBasicButtonLink, `
+  display: block;
+  margin: 8px 0;
+  white-space: nowrap;
+  text-overflow: ellipsis;
+  overflow: hidden;
+`);
+
+const cssPersonalOrg = styled('div', `
+  display: flex;
+  align-items: center;
+  margin-left: -8px;
+  gap: 8px;
+  color: ${theme.lightText};
+`);

app/client/ui2018/cssVars.ts

@@ -788,6 +788,11 @@ export const theme = {
     undefined, colors.darkGrey),
   highlightedCodeBgDisabled: new CustomProp('theme-highlighted-code-bg-disabled',
     undefined, colors.mediumGreyOpaque),
+
+  /* Login Page */
+  loginPageBg: new CustomProp('theme-login-page-bg', undefined, 'white'),
+  loginPageBackdrop: new CustomProp('theme-login-page-backdrop', undefined, '#F5F8FA'),
+  loginPageLine: new CustomProp('theme-login-page-line', undefined, colors.lightGrey),
 };
 
 const cssColors = values(colors).map(v => v.decl()).join('\n');