merge: Add PatternFly 4 web interface (#161)

This pull requests adds the new web interface based on the PatternFly 4 design framework.
This framework enables us to develop more quickly the interfaces necessary in OpenDC. 

* Remove the OpenDC landing page from the web interface module
* Add support for the PatternFly 4 framework in Next.js
* Relax topology schema requirements
* Migrate UI components to PatternFly 4

1 files changed, 133 insertions, 0 deletions

diff --git a/opendc-web/opendc-web-ui/src/components/AppHeaderTools.js b/opendc-web/opendc-web-ui/src/components/AppHeaderTools.js
new file mode 100644
index 00000000..02e5d265
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/components/AppHeaderTools.js
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2021 AtLarge Research
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+import {
+    Avatar,
+    Button,
+    ButtonVariant,
+    Dropdown,
+    DropdownGroup,
+    DropdownItem,
+    DropdownToggle,
+    KebabToggle,
+    PageHeaderTools,
+    PageHeaderToolsGroup,
+    PageHeaderToolsItem,
+    Skeleton,
+} from '@patternfly/react-core'
+import { useState } from 'react'
+import { useAuth } from '../auth'
+import { GithubIcon, HelpIcon } from '@patternfly/react-icons'
+
+function AppHeaderTools() {
+    const auth = useAuth()
+
+    const [isKebabDropdownOpen, setKebabDropdownOpen] = useState(false)
+    const kebabDropdownItems = [
+        <DropdownItem
+            key={0}
+            component={
+                <a href="https://opendc.org" target="_blank" rel="noreferrer">
+                    <HelpIcon /> Help
+                </a>
+            }
+        />,
+    ]
+
+    const [isDropdownOpen, setDropdownOpen] = useState(false)
+    const userDropdownItems = [
+        <DropdownGroup key="group 2">
+            <DropdownItem key="group 2 logout" onClick={() => auth.logout({ returnTo: window.location.origin })}>
+                Logout
+            </DropdownItem>
+        </DropdownGroup>,
+    ]
+
+    return (
+        <PageHeaderTools>
+            <PageHeaderToolsGroup visibility={{ default: 'hidden', lg: 'visible' }}>
+                <PageHeaderToolsItem>
+                    <Button
+                        component="a"
+                        href="https://github.com/atlarge-research/opendc"
+                        target="_blank"
+                        aria-label="Source code"
+                        variant={ButtonVariant.plain}
+                    >
+                        <GithubIcon />
+                    </Button>
+                </PageHeaderToolsItem>
+                <PageHeaderToolsItem>
+                    <Button
+                        component="a"
+                        href="https://opendc.org/"
+                        target="_blank"
+                        aria-label="Help actions"
+                        variant={ButtonVariant.plain}
+                    >
+                        <HelpIcon />
+                    </Button>
+                </PageHeaderToolsItem>
+            </PageHeaderToolsGroup>
+            <PageHeaderToolsGroup>
+                <PageHeaderToolsItem visibility={{ lg: 'hidden' }}>
+                    <Dropdown
+                        isPlain
+                        position="right"
+                        toggle={<KebabToggle onToggle={() => setKebabDropdownOpen(!isKebabDropdownOpen)} />}
+                        isOpen={isKebabDropdownOpen}
+                        dropdownItems={kebabDropdownItems}
+                    />
+                </PageHeaderToolsItem>
+                <PageHeaderToolsItem visibility={{ default: 'hidden', md: 'visible' }}>
+                    <Dropdown
+                        isPlain
+                        position="right"
+                        isOpen={isDropdownOpen}
+                        toggle={
+                            <DropdownToggle onToggle={() => setDropdownOpen(!isDropdownOpen)}>
+                                {auth?.user?.name ?? (
+                                    <Skeleton
+                                        fontSize="xs"
+                                        width="150px"
+                                        className="pf-u-display-inline-flex"
+                                        screenreaderText="Loading username"
+                                    />
+                                )}
+                            </DropdownToggle>
+                        }
+                        dropdownItems={userDropdownItems}
+                    />
+                </PageHeaderToolsItem>
+            </PageHeaderToolsGroup>
+            {auth?.user?.picture ? (
+                <Avatar src={auth.user.picture} alt="Avatar image" />
+            ) : (
+                <Skeleton className="pf-c-avatar" shape="circle" width="2.25rem" screenreaderText="Loading avatar" />
+            )}
+        </PageHeaderTools>
+    )
+}
+
+AppHeaderTools.propTypes = {}
+
+export default AppHeaderTools