Migrate to Auth0 as Identity Provider

This pull request removes the hard dependency on Google for 
authenticating users and migrates to Auth0 as Identity Provider for OpenDC. 
This has as benefit that we can authenticate users without having to manage 
user data ourselves and do not have a dependency on Google accounts anymore. 

- Frontend cleanup:
   - Use CSS modules everywhere to encapsulate the styling of React components.
   - Perform all communication in the frontend via the REST API (as opposed to WebSockets).
      The original approach was aimed at collaborative editing, but made normal operations 
      harder to implement and debug. If we want to implement collaborative editing in the 
      future, we can expose only a small WebSocket API specifically for collaborative editing.
   - Move to FontAwesome 5 (using the official React libraries)
   - Use Reactstrap where possible. Previously, we mixed raw Bootstrap classes with 
      Reactstrap, which is confusing.
   - Reduce the scope of the Redux state. Some state in the frontend application can be 
      kept locally and does not need to be managed by Redux.
   - Migrate from Create React App (CRA) to Next.js since it allows us to pre-render
      multiple pages as well as opt-in to Server Side Rendering.
   - Remove the Google login and use Auth0 for authentication now.
   - Use Node 16
- Backend cleanup:
   - Remove Socket.IO endpoint from backend, since it is not needed by the frontend 
      anymore. Removing it reduces the attack surface of OpenDC as well as the maintenance efforts.
   - Use Auth0 JWT token for authorizing API accesses
   - Refactor API endpoints to use Flask Restful as opposed to our custom in-house 
      routing logic. Previously, this was needed to support the Socket.IO endpoint, 
      but increases maintenance effort.
   - Expose Swagger UI from API
   - Use Python 3.9 and uwsgi to host Flask application
- Actualize OpenAPI schema and update to version 3.0.

**Breaking API Changes**

* This pull request removes the users collection from the database table. Instead, we now use the user identifier passed by Auth0 to identify the data that belongs to a user.

6 files changed, 56 insertions, 14 deletions

diff --git a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/AddPrefabContainer.js b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/AddPrefabContainer.js
index 3708e33e..c2a0fc48 100644
--- a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/AddPrefabContainer.js
+++ b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/AddPrefabContainer.js
@@ -1,6 +1,6 @@
 import React from 'react'
 import { useDispatch } from 'react-redux'
-import { addPrefab } from '../../../../../actions/prefabs'
+import { addPrefab } from '../../../../../redux/actions/prefabs'
 import AddPrefabComponent from '../../../../../components/app/sidebars/topology/rack/AddPrefabComponent'
 
 const AddPrefabContainer = (props) => {
diff --git a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/BackToRoomContainer.js b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/BackToRoomContainer.js
index 93bb749f..a98728a6 100644
--- a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/BackToRoomContainer.js
+++ b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/BackToRoomContainer.js
@@ -1,6 +1,6 @@
 import React from 'react'
 import { useDispatch } from 'react-redux'
-import { goDownOneInteractionLevel } from '../../../../../actions/interaction-level'
+import { goDownOneInteractionLevel } from '../../../../../redux/actions/interaction-level'
 import BackToRoomComponent from '../../../../../components/app/sidebars/topology/rack/BackToRoomComponent'
 
 const BackToRoomContainer = (props) => {
diff --git a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/DeleteRackContainer.js b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/DeleteRackContainer.js
index de46e491..4463530e 100644
--- a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/DeleteRackContainer.js
+++ b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/DeleteRackContainer.js
@@ -1,11 +1,34 @@
-import React from 'react'
+import React, { useState } from 'react'
 import { useDispatch } from 'react-redux'
-import { openDeleteRackModal } from '../../../../../actions/modals/topology'
-import DeleteRackComponent from '../../../../../components/app/sidebars/topology/rack/DeleteRackComponent'
+import ConfirmationModal from '../../../../../components/modals/ConfirmationModal'
+import { deleteRack } from '../../../../../redux/actions/topology/rack'
+import { Button } from 'reactstrap'
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
+import { faTrash } from '@fortawesome/free-solid-svg-icons'
 
-const DeleteRackContainer = (props) => {
+const DeleteRackContainer = () => {
     const dispatch = useDispatch()
-    return <DeleteRackComponent {...props} onClick={() => dispatch(openDeleteRackModal())} />
+    const [isVisible, setVisible] = useState(false)
+    const callback = (isConfirmed) => {
+        if (isConfirmed) {
+            dispatch(deleteRack())
+        }
+        setVisible(false)
+    }
+    return (
+        <>
+            <Button color="danger" outline block onClick={() => setVisible(true)}>
+                <FontAwesomeIcon icon={faTrash} className="mr-2" />
+                Delete this rack
+            </Button>
+            <ConfirmationModal
+                title="Delete this rack"
+                message="Are you sure you want to delete this rack?"
+                show={isVisible}
+                callback={callback}
+            />
+        </>
+    )
 }
 
 export default DeleteRackContainer
diff --git a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/EmptySlotContainer.js b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/EmptySlotContainer.js
index 5bb2c784..2134e411 100644
--- a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/EmptySlotContainer.js
+++ b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/EmptySlotContainer.js
@@ -1,6 +1,6 @@
 import React from 'react'
 import { useDispatch } from 'react-redux'
-import { addMachine } from '../../../../../actions/topology/rack'
+import { addMachine } from '../../../../../redux/actions/topology/rack'
 import EmptySlotComponent from '../../../../../components/app/sidebars/topology/rack/EmptySlotComponent'
 
 const EmptySlotContainer = (props) => {
diff --git a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/MachineContainer.js b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/MachineContainer.js
index 149b4d18..7d8e32c1 100644
--- a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/MachineContainer.js
+++ b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/MachineContainer.js
@@ -1,6 +1,6 @@
 import React from 'react'
 import { useDispatch, useSelector } from 'react-redux'
-import { goFromRackToMachine } from '../../../../../actions/interaction-level'
+import { goFromRackToMachine } from '../../../../../redux/actions/interaction-level'
 import MachineComponent from '../../../../../components/app/sidebars/topology/rack/MachineComponent'
 
 const MachineContainer = (props) => {
diff --git a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/RackNameContainer.js b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/RackNameContainer.js
index 7dfdb473..eaa1e78e 100644
--- a/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/RackNameContainer.js
+++ b/opendc-web/opendc-web-ui/src/containers/app/sidebars/topology/rack/RackNameContainer.js
@@ -1,14 +1,33 @@
-import React from 'react'
+import React, { useState } from 'react'
 import { useDispatch, useSelector } from 'react-redux'
-import { openEditRackNameModal } from '../../../../../actions/modals/topology'
-import RackNameComponent from '../../../../../components/app/sidebars/topology/rack/RackNameComponent'
+import NameComponent from '../../../../../components/app/sidebars/topology/NameComponent'
+import TextInputModal from '../../../../../components/modals/TextInputModal'
+import { editRackName } from '../../../../../redux/actions/topology/rack'
 
-const RackNameContainer = (props) => {
+const RackNameContainer = () => {
+    const [isVisible, setVisible] = useState(false)
     const rackName = useSelector(
         (state) => state.objects.rack[state.objects.tile[state.interactionLevel.tileId].rackId].name
     )
     const dispatch = useDispatch()
-    return <RackNameComponent {...props} rackName={rackName} onEdit={() => dispatch(openEditRackNameModal())} />
+    const callback = (name) => {
+        if (name) {
+            dispatch(editRackName(name))
+        }
+        setVisible(false)
+    }
+    return (
+        <>
+            <NameComponent name={rackName} onEdit={() => setVisible(true)} />
+            <TextInputModal
+                title="Edit rack name"
+                label="Rack name"
+                show={isVisible}
+                initialValue={rackName}
+                callback={callback}
+            />
+        </>
+    )
 }
 
 export default RackNameContainer