GUI: Add tenant dropdown to top menu

On a non whitelabeled setup, allow a user to jump from one tenant to
another without having to go back to the tenants page.
On a whitelabeled setup, make the tenant item non-clickable (the click
doesn't do anything anyway).

Change-Id: I94d27445c65ed5c3f8d02fae9d47d426528d2332

4 files changed, 131 insertions, 16 deletions

diff --git a/web/src/App.jsx b/web/src/App.jsx
index 6a5c6e010..9a0caf551 100644
--- a/web/src/App.jsx
+++ b/web/src/App.jsx
@@ -32,6 +32,8 @@ import {
   ButtonVariant,
   Dropdown,
   DropdownItem,
+  DropdownToggle,
+  DropdownSeparator,
   KebabToggle,
   Modal,
   Nav,
@@ -54,6 +56,7 @@ import {
 import {
   BellIcon,
   BookIcon,
+  ChevronDownIcon,
   CodeIcon,
   ServiceIcon,
   UsersIcon,
@@ -67,6 +70,7 @@ import ConfigModal from './containers/config/Config'
 import logo from './images/logo.svg'
 import { clearNotification } from './actions/notifications'
 import { fetchConfigErrorsAction, clearConfigErrorsAction } from './actions/configErrors'
+import { fetchTenantsIfNeeded } from './actions/tenants'
 import { routes } from './routes'
 import { setTenantAction } from './actions/tenant'
 import { configureAuthFromTenant, configureAuthFromInfo } from './actions/auth'
@@ -81,6 +85,7 @@ class App extends React.Component {
     configErrorsReady: PropTypes.bool,
     info: PropTypes.object,
     tenant: PropTypes.object,
+    tenants: PropTypes.object,
     timezone: PropTypes.string,
     location: PropTypes.object,
     history: PropTypes.object,
@@ -93,6 +98,7 @@ class App extends React.Component {
 
   state = {
     showErrors: false,
+    isTenantDropdownOpen: false,
   }
 
   renderMenu() {
@@ -199,6 +205,7 @@ class App extends React.Component {
       } else if (!info.tenant) {
         // Multi tenant, look for tenant name in url
         whiteLabel = false
+        this.props.dispatch(fetchTenantsIfNeeded())
 
         const match = matchPath(
           this.props.location.pathname, { path: '/t/:tenant' })
@@ -368,6 +375,91 @@ class App extends React.Component {
     )
   }
 
+  renderTenantDropdown() {
+    const { tenant, tenants } = this.props
+    const { isTenantDropdownOpen } = this.state
+
+    if (tenant.whiteLabel) {
+      return (
+        <PageHeaderToolsItem>
+          <strong>Tenant</strong> {tenant.name}
+        </PageHeaderToolsItem>
+      )
+    } else {
+      const tenantLink = (_tenant) => {
+        const currentPath = this.props.location.pathname
+        let suffix
+        switch (currentPath) {
+          case '/t/' + tenant.name + '/projects':
+            suffix = '/projects'
+            break
+          case '/t/' + tenant.name + '/jobs':
+            suffix = '/jobs'
+            break
+          case '/t/' + tenant.name + '/labels':
+            suffix = '/labels'
+            break
+          case '/t/' + tenant.name + '/nodes':
+            suffix = '/nodes'
+            break
+          case '/t/' + tenant.name + '/autoholds':
+            suffix = '/autoholds'
+            break
+          case '/t/' + tenant.name + '/builds':
+            suffix = '/builds'
+            break
+          case '/t/' + tenant.name + '/buildsets':
+            suffix = '/buildsets'
+            break
+          case '/t/' + tenant.name + '/status':
+          default:
+            // all other paths point to tenant-specific resources that would most likely result in a 404
+            suffix = '/status'
+            break
+        }
+        return <Link to={'/t/' + _tenant.name + suffix}>{_tenant.name}</Link>
+      }
+
+      const options = tenants.tenants.filter(
+        (_tenant) => (_tenant.name !== tenant.name)
+      ).map(
+        (_tenant, idx) => {
+          return (
+            <DropdownItem key={'tenant-dropdown-' + idx} component={tenantLink(_tenant)} />
+          )
+        })
+      options.push(
+        <DropdownSeparator key="tenant-dropdown-separator" />,
+        <DropdownItem
+          key="tenant-dropdown-tenants_page"
+          component={<Link to={tenant.defaultRoute}>Go to tenants page</Link>} />
+      )
+
+      return (tenants.isFetching ?
+        <PageHeaderToolsItem>
+          Loading tenants ...
+        </PageHeaderToolsItem> :
+        <>
+          <PageHeaderToolsItem>
+            <Dropdown
+              isOpen={isTenantDropdownOpen}
+              toggle={
+                <DropdownToggle
+                  className={`zuul-menu-dropdown-toggle${isTenantDropdownOpen ? '-expanded' : ''}`}
+                  id="tenant-dropdown-toggle-id"
+                  onToggle={(isOpen) => { this.setState({ isTenantDropdownOpen: isOpen }) }}
+                  toggleIndicator={ChevronDownIcon}
+                >
+                  <strong>Tenant</strong> {tenant.name}
+                </DropdownToggle>}
+              onSelect={() => { this.setState({ isTenantDropdownOpen: !isTenantDropdownOpen }) }}
+              dropdownItems={options}
+            />
+          </PageHeaderToolsItem>
+        </>)
+    }
+  }
+
   render() {
     const { isKebabDropdownOpen } = this.state
     const { notifications, configErrors, tenant, info, auth } = this.props
@@ -406,7 +498,7 @@ class App extends React.Component {
           key="tenant"
           onClick={event => this.handleTenantLink(event)}
         >
-          <UsersIcon /> Tenant
+          <UsersIcon /> Tenants
         </DropdownItem>
       )
     }
@@ -445,15 +537,7 @@ class App extends React.Component {
               </Button>
             </a>
           </PageHeaderToolsItem>
-          {tenant.name && (
-            <PageHeaderToolsItem>
-              <Link to={tenant.defaultRoute}>
-                <Button variant={ButtonVariant.plain}>
-                  <strong>Tenant</strong> {tenant.name}
-                </Button>
-              </Link>
-            </PageHeaderToolsItem>
-          )}
+          {tenant.name && (this.renderTenantDropdown())}
         </PageHeaderToolsGroup>
         <PageHeaderToolsGroup>
           {/* this kebab dropdown replaces the icon buttons and is hidden for
@@ -521,6 +605,7 @@ export default withRouter(connect(
     configErrorsReady: state.configErrors.ready,
     info: state.info,
     tenant: state.tenant,
+    tenants: state.tenants,
     timezone: state.timezone,
     user: state.user,
     auth: state.auth,
diff --git a/web/src/App.test.jsx b/web/src/App.test.jsx
index a1d0234d9..519980c7a 100644
--- a/web/src/App.test.jsx
+++ b/web/src/App.test.jsx
@@ -135,8 +135,9 @@ it('renders single tenant', async () => {
   // Link should be white-label scoped
   const topMenuLinks = application.root.findAllByType(Link)
   expect(topMenuLinks[0].props.to).toEqual('/status')
-  expect(topMenuLinks[3].props.to.pathname).toEqual('/status')
-  expect(topMenuLinks[4].props.to.pathname).toEqual('/projects')
+  expect(topMenuLinks[1].props.to).toEqual('/openapi')
+  expect(topMenuLinks[2].props.to.pathname).toEqual('/status')
+  expect(topMenuLinks[3].props.to.pathname).toEqual('/projects')
   // Location should be /status
   expect(location.pathname).toEqual('/status')
   // Info should tell white label tenant openstack
diff --git a/web/src/containers/timezone/SelectTz.jsx b/web/src/containers/timezone/SelectTz.jsx
index aaa585336..576645f6c 100644
--- a/web/src/containers/timezone/SelectTz.jsx
+++ b/web/src/containers/timezone/SelectTz.jsx
@@ -12,9 +12,9 @@
 
 import PropTypes from 'prop-types'
 import React from 'react'
-import Select from 'react-select'
+import Select, { components } from 'react-select'
 import moment from 'moment-timezone'
-import { OutlinedClockIcon } from '@patternfly/react-icons'
+import { OutlinedClockIcon, ChevronDownIcon } from '@patternfly/react-icons'
 import { connect } from 'react-redux'
 import { setTimezoneAction } from '../../actions/timezone'
 
@@ -58,7 +58,7 @@ class SelectTz extends React.Component {
   }
 
   render() {
-    const textColor = '#d1d1d1'
+    const textColor = '#fff'
     const containerStyles= {
       border: 'solid #2b2b2b',
       borderWidth: '0 0 0 1px',
@@ -83,7 +83,11 @@ class SelectTz extends React.Component {
       }),
       dropdownIndicator:(provided) => ({
         ...provided,
-        padding: '3px'
+        color: '#fff',
+        padding: '3px',
+        ':hover': {
+          color: '#fff'
+        }
       }),
       indicatorSeparator: () => {},
       menu: (provided) => ({
@@ -93,12 +97,22 @@ class SelectTz extends React.Component {
         top: '22px',
       })
     }
+
+    const DropdownIndicator = (props) => {
+      return (
+        <components.DropdownIndicator {...props}>
+          <ChevronDownIcon />
+        </components.DropdownIndicator>
+      )
+    }
+
     return (
       <div style={containerStyles}>
         <OutlinedClockIcon/>
         <Select
           className="zuul-select-tz"
           styles={customStyles}
+          components={{ DropdownIndicator }}
           value={this.state.currentValue}
           onChange={this.handleChange}
           options={this.state.availableTz}
diff --git a/web/src/index.css b/web/src/index.css
index 6fec50911..587804cfa 100644
--- a/web/src/index.css
+++ b/web/src/index.css
@@ -66,6 +66,21 @@ a.refresh {
     font-weight: bold;
 }
 
+.zuul-menu-dropdown-toggle:before {
+    content: none !important;
+}
+
+.zuul-menu-dropdown-toggle:hover {
+    border-bottom: none;
+}
+
+.zuul-menu-dropdown-toggle-expanded:before {
+    border-left: none;
+    border-right: none;
+    border-top: none;
+    border-bottom: none;
+}
+
 /* Remove ugly outline when a Switch is selected */
 .pf-c-switch {
     --pf-c-switch__input--focus__toggle--OutlineWidth: 0;