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.

10 files changed, 0 insertions, 313 deletions

diff --git a/opendc-web/opendc-web-ui/src/api/routes/portfolios.js b/opendc-web/opendc-web-ui/src/api/routes/portfolios.js
deleted file mode 100644
index 7c9ea02a..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/portfolios.js
+++ /dev/null
@@ -1,42 +0,0 @@
-import { deleteById, getById } from './util'
-import { sendRequest } from '../index'
-
-export function addPortfolio(projectId, portfolio) {
-    return sendRequest({
-        path: '/projects/{projectId}/portfolios',
-        method: 'POST',
-        parameters: {
-            body: {
-                portfolio,
-            },
-            path: {
-                projectId,
-            },
-            query: {},
-        },
-    })
-}
-
-export function getPortfolio(portfolioId) {
-    return getById('/portfolios/{portfolioId}', { portfolioId })
-}
-
-export function updatePortfolio(portfolioId, portfolio) {
-    return sendRequest({
-        path: '/portfolios/{projectId}',
-        method: 'POST',
-        parameters: {
-            body: {
-                portfolio,
-            },
-            path: {
-                portfolioId,
-            },
-            query: {},
-        },
-    })
-}
-
-export function deletePortfolio(portfolioId) {
-    return deleteById('/portfolios/{portfolioId}', { portfolioId })
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/prefabs.js b/opendc-web/opendc-web-ui/src/api/routes/prefabs.js
deleted file mode 100644
index 8a1debfa..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/prefabs.js
+++ /dev/null
@@ -1,40 +0,0 @@
-import { sendRequest } from '../index'
-import { deleteById, getById } from './util'
-
-export function getPrefab(prefabId) {
-    return getById('/prefabs/{prefabId}', { prefabId })
-}
-
-export function addPrefab(prefab) {
-    return sendRequest({
-        path: '/prefabs',
-        method: 'POST',
-        parameters: {
-            body: {
-                prefab,
-            },
-            path: {},
-            query: {},
-        },
-    })
-}
-
-export function updatePrefab(prefab) {
-    return sendRequest({
-        path: '/prefabs/{prefabId}',
-        method: 'PUT',
-        parameters: {
-            body: {
-                prefab,
-            },
-            path: {
-                prefabId: prefab._id,
-            },
-            query: {},
-        },
-    })
-}
-
-export function deletePrefab(prefabId) {
-    return deleteById('/prefabs/{prefabId}', { prefabId })
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/projects.js b/opendc-web/opendc-web-ui/src/api/routes/projects.js
deleted file mode 100644
index 4109079c..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/projects.js
+++ /dev/null
@@ -1,40 +0,0 @@
-import { sendRequest } from '../index'
-import { deleteById, getById } from './util'
-
-export function getProject(projectId) {
-    return getById('/projects/{projectId}', { projectId })
-}
-
-export function addProject(project) {
-    return sendRequest({
-        path: '/projects',
-        method: 'POST',
-        parameters: {
-            body: {
-                project,
-            },
-            path: {},
-            query: {},
-        },
-    })
-}
-
-export function updateProject(project) {
-    return sendRequest({
-        path: '/projects/{projectId}',
-        method: 'PUT',
-        parameters: {
-            body: {
-                project,
-            },
-            path: {
-                projectId: project._id,
-            },
-            query: {},
-        },
-    })
-}
-
-export function deleteProject(projectId) {
-    return deleteById('/projects/{projectId}', { projectId })
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/scenarios.js b/opendc-web/opendc-web-ui/src/api/routes/scenarios.js
deleted file mode 100644
index ab2e8b86..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/scenarios.js
+++ /dev/null
@@ -1,42 +0,0 @@
-import { deleteById, getById } from './util'
-import { sendRequest } from '../index'
-
-export function addScenario(portfolioId, scenario) {
-    return sendRequest({
-        path: '/portfolios/{portfolioId}/scenarios',
-        method: 'POST',
-        parameters: {
-            body: {
-                scenario,
-            },
-            path: {
-                portfolioId,
-            },
-            query: {},
-        },
-    })
-}
-
-export function getScenario(scenarioId) {
-    return getById('/scenarios/{scenarioId}', { scenarioId })
-}
-
-export function updateScenario(scenarioId, scenario) {
-    return sendRequest({
-        path: '/scenarios/{projectId}',
-        method: 'POST',
-        parameters: {
-            body: {
-                scenario,
-            },
-            path: {
-                scenarioId,
-            },
-            query: {},
-        },
-    })
-}
-
-export function deleteScenario(scenarioId) {
-    return deleteById('/scenarios/{scenarioId}', { scenarioId })
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/schedulers.js b/opendc-web/opendc-web-ui/src/api/routes/schedulers.js
deleted file mode 100644
index 4481fb2a..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/schedulers.js
+++ /dev/null
@@ -1,5 +0,0 @@
-import { getAll } from './util'
-
-export function getAllSchedulers() {
-    return getAll('/schedulers')
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/token-signin.js b/opendc-web/opendc-web-ui/src/api/routes/token-signin.js
deleted file mode 100644
index ced5d2e0..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/token-signin.js
+++ /dev/null
@@ -1,12 +0,0 @@
-import config from '../../config'
-
-export function performTokenSignIn(token) {
-    const apiUrl = config['API_BASE_URL']
-
-    return fetch(`${apiUrl}/tokensignin`, {
-        method: 'POST',
-        body: new URLSearchParams({
-            idtoken: token,
-        }),
-    }).then((res) => res.json())
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/topologies.js b/opendc-web/opendc-web-ui/src/api/routes/topologies.js
deleted file mode 100644
index a8f0d6b1..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/topologies.js
+++ /dev/null
@@ -1,42 +0,0 @@
-import { deleteById, getById } from './util'
-import { sendRequest } from '../index'
-
-export function addTopology(topology) {
-    return sendRequest({
-        path: '/projects/{projectId}/topologies',
-        method: 'POST',
-        parameters: {
-            body: {
-                topology,
-            },
-            path: {
-                projectId: topology.projectId,
-            },
-            query: {},
-        },
-    })
-}
-
-export function getTopology(topologyId) {
-    return getById('/topologies/{topologyId}', { topologyId })
-}
-
-export function updateTopology(topology) {
-    return sendRequest({
-        path: '/topologies/{topologyId}',
-        method: 'PUT',
-        parameters: {
-            body: {
-                topology,
-            },
-            path: {
-                topologyId: topology._id,
-            },
-            query: {},
-        },
-    })
-}
-
-export function deleteTopology(topologyId) {
-    return deleteById('/topologies/{topologyId}', { topologyId })
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/traces.js b/opendc-web/opendc-web-ui/src/api/routes/traces.js
deleted file mode 100644
index 67895a87..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/traces.js
+++ /dev/null
@@ -1,5 +0,0 @@
-import { getAll } from './util'
-
-export function getAllTraces() {
-    return getAll('/traces')
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/users.js b/opendc-web/opendc-web-ui/src/api/routes/users.js
deleted file mode 100644
index 3028f3f7..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/users.js
+++ /dev/null
@@ -1,48 +0,0 @@
-import { sendRequest } from '../index'
-import { deleteById } from './util'
-
-export function getUserByEmail(email) {
-    return sendRequest({
-        path: '/users',
-        method: 'GET',
-        parameters: {
-            body: {},
-            path: {},
-            query: {
-                email,
-            },
-        },
-    })
-}
-
-export function addUser(user) {
-    return sendRequest({
-        path: '/users',
-        method: 'POST',
-        parameters: {
-            body: {
-                user,
-            },
-            path: {},
-            query: {},
-        },
-    })
-}
-
-export function getUser(userId) {
-    return sendRequest({
-        path: '/users/{userId}',
-        method: 'GET',
-        parameters: {
-            body: {},
-            path: {
-                userId,
-            },
-            query: {},
-        },
-    })
-}
-
-export function deleteUser(userId) {
-    return deleteById('/users/{userId}', { userId })
-}
diff --git a/opendc-web/opendc-web-ui/src/api/routes/util.js b/opendc-web/opendc-web-ui/src/api/routes/util.js
deleted file mode 100644
index 67e7173b..00000000
--- a/opendc-web/opendc-web-ui/src/api/routes/util.js
+++ /dev/null
@@ -1,37 +0,0 @@
-import { sendRequest } from '../index'
-
-export function getAll(path) {
-    return sendRequest({
-        path,
-        method: 'GET',
-        parameters: {
-            body: {},
-            path: {},
-            query: {},
-        },
-    })
-}
-
-export function getById(path, pathObject) {
-    return sendRequest({
-        path,
-        method: 'GET',
-        parameters: {
-            body: {},
-            path: pathObject,
-            query: {},
-        },
-    })
-}
-
-export function deleteById(path, pathObject) {
-    return sendRequest({
-        path,
-        method: 'DELETE',
-        parameters: {
-            body: {},
-            path: pathObject,
-            query: {},
-        },
-    })
-}