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.

9 files changed, 0 insertions, 335 deletions

diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/__init__.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/__init__.py
deleted file mode 100644
index e69de29b..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/__init__.py
+++ /dev/null
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/__init__.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/__init__.py
deleted file mode 100644
index e69de29b..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/__init__.py
+++ /dev/null
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/endpoint.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/endpoint.py
deleted file mode 100644
index 0d9ad5cd..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/endpoint.py
+++ /dev/null
@@ -1,22 +0,0 @@
-from opendc.models.prefab import Prefab
-from opendc.util.database import DB
-from opendc.models.user import User
-from opendc.util.rest import Response
-
-
-def GET(request):
-    """Return all prefabs the user is authorized to access"""
-
-    user = User.from_google_id(request.google_id)
-
-    user.check_exists()
-
-    own_prefabs = DB.fetch_all({'authorId': user.get_id()}, Prefab.collection_name)
-    public_prefabs = DB.fetch_all({'visibility': 'public'}, Prefab.collection_name)
-
-    authorizations = {"authorizations": []}
-
-    authorizations["authorizations"].append(own_prefabs)
-    authorizations["authorizations"].append(public_prefabs)
-
-    return Response(200, 'Successfully fetched authorizations.', authorizations)
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/test_endpoint.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/test_endpoint.py
deleted file mode 100644
index 6d36d428..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/authorizations/test_endpoint.py
+++ /dev/null
@@ -1,71 +0,0 @@
-from opendc.util.database import DB
-from unittest.mock import Mock
-
-test_id = 24 * '1'
-
-
-def test_get_authorizations(client, mocker):
-    DB.fetch_all = Mock()
-    mocker.patch.object(DB, 'fetch_one', return_value={'_id': test_id})
-    DB.fetch_all.side_effect = [
-                        [{
-                            '_id': test_id,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': test_id,
-                            'visibility' : 'private'
-                        },
-                        {
-                            '_id': '2' * 24,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': test_id,
-                            'visibility' : 'private'
-                        },
-                        {
-                            '_id': '3' * 24,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': test_id,
-                            'visibility' : 'public'
-                        },
-                        {
-                            '_id': '4' * 24,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': test_id,
-                            'visibility' : 'public'
-                        }],
-                        [{
-                            '_id': '5' * 24,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': '2' * 24,
-                            'visibility' : 'public'
-                        },
-                        {
-                            '_id': '6' * 24,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': '2' * 24,
-                            'visibility' : 'public'
-                        },
-                        {
-                            '_id': '7' * 24,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': '2' * 24,
-                            'visibility' : 'public'
-                        },
-                        {
-                            '_id': '8' * 24,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': '2' * 24,
-                            'visibility' : 'public'
-                        }]
-                        ]
-    mocker.patch.object(DB, 'fetch_one', return_value={'_id': test_id})
-    res = client.get('/v2/prefabs/authorizations')
-    assert '200' in res.status
-
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/endpoint.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/endpoint.py
deleted file mode 100644
index 723a2f0d..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/endpoint.py
+++ /dev/null
@@ -1,23 +0,0 @@
-from datetime import datetime
-
-from opendc.models.prefab import Prefab
-from opendc.models.user import User
-from opendc.util.database import Database
-from opendc.util.rest import Response
-
-
-def POST(request):
-    """Create a new prefab, and return that new prefab."""
-
-    request.check_required_parameters(body={'prefab': {'name': 'string'}})
-
-    prefab = Prefab(request.params_body['prefab'])
-    prefab.set_property('datetimeCreated', Database.datetime_to_string(datetime.now()))
-    prefab.set_property('datetimeLastEdited', Database.datetime_to_string(datetime.now()))
-
-    user = User.from_google_id(request.google_id)
-    prefab.set_property('authorId', user.get_id())
-
-    prefab.insert()
-
-    return Response(200, 'Successfully created prefab.', prefab.obj)
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/__init__.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/__init__.py
deleted file mode 100644
index e69de29b..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/__init__.py
+++ /dev/null
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/endpoint.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/endpoint.py
deleted file mode 100644
index 7b81f546..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/endpoint.py
+++ /dev/null
@@ -1,50 +0,0 @@
-from datetime import datetime
-
-from opendc.models.prefab import Prefab
-from opendc.util.database import Database
-from opendc.util.rest import Response
-
-
-def GET(request):
-    """Get this Prefab."""
-
-    request.check_required_parameters(path={'prefabId': 'string'})
-
-    prefab = Prefab.from_id(request.params_path['prefabId'])
-    prefab.check_exists()
-    prefab.check_user_access(request.google_id)
-
-    return Response(200, 'Successfully retrieved prefab', prefab.obj)
-
-
-def PUT(request):
-    """Update a prefab's name and/or contents."""
-
-    request.check_required_parameters(body={'prefab': {'name': 'name'}}, path={'prefabId': 'string'})
-
-    prefab = Prefab.from_id(request.params_path['prefabId'])
-
-    prefab.check_exists()
-    prefab.check_user_access(request.google_id)
-
-    prefab.set_property('name', request.params_body['prefab']['name'])
-    prefab.set_property('rack', request.params_body['prefab']['rack'])
-    prefab.set_property('datetime_last_edited', Database.datetime_to_string(datetime.now()))
-    prefab.update()
-
-    return Response(200, 'Successfully updated prefab.', prefab.obj)
-
-
-def DELETE(request):
-    """Delete this Prefab."""
-
-    request.check_required_parameters(path={'prefabId': 'string'})
-
-    prefab = Prefab.from_id(request.params_path['prefabId'])
-
-    prefab.check_exists()
-    prefab.check_user_access(request.google_id)
-
-    old_object = prefab.delete()
-
-    return Response(200, 'Successfully deleted prefab.', old_object)
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/test_endpoint.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/test_endpoint.py
deleted file mode 100644
index 2daeb6bf..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/prefabId/test_endpoint.py
+++ /dev/null
@@ -1,145 +0,0 @@
-from opendc.util.database import DB
-from unittest.mock import Mock
-
-test_id = 24 * '1'
-test_id_2 = 24 * '2'
-
-
-def test_get_prefab_non_existing(client, mocker):
-    mocker.patch.object(DB, 'fetch_one', return_value=None)
-    assert '404' in client.get(f'/v2/prefabs/{test_id}').status
-
-
-def test_get_private_prefab_not_authorized(client, mocker):
-    DB.fetch_one = Mock()
-    DB.fetch_one.side_effect = [{
-        '_id': test_id,
-        'name': 'test prefab',
-        'authorId': test_id_2,
-        'visibility': 'private',
-        'rack': {}
-    },
-        {
-            '_id': test_id
-        }
-    ]
-    res = client.get(f'/v2/prefabs/{test_id}')
-    assert '403' in res.status
-
-
-def test_get_private_prefab(client, mocker):
-    DB.fetch_one = Mock()
-    DB.fetch_one.side_effect = [{
-        '_id': test_id,
-        'name': 'test prefab',
-        'authorId': test_id,
-        'visibility': 'private',
-        'rack': {}
-    },
-        {
-            '_id': test_id
-        }
-    ]
-    res = client.get(f'/v2/prefabs/{test_id}')
-    assert '200' in res.status
-
-
-def test_get_public_prefab(client, mocker):
-    DB.fetch_one = Mock()
-    DB.fetch_one.side_effect = [{
-        '_id': test_id,
-        'name': 'test prefab',
-        'authorId': test_id_2,
-        'visibility': 'public',
-        'rack': {}
-    },
-        {
-            '_id': test_id
-        }
-    ]
-    res = client.get(f'/v2/prefabs/{test_id}')
-    assert '200' in res.status
-
-
-def test_update_prefab_missing_parameter(client):
-    assert '400' in client.put(f'/v2/prefabs/{test_id}').status
-
-
-def test_update_prefab_non_existing(client, mocker):
-    mocker.patch.object(DB, 'fetch_one', return_value=None)
-    assert '404' in client.put(f'/v2/prefabs/{test_id}', json={'prefab': {'name': 'S'}}).status
-
-
-def test_update_prefab_not_authorized(client, mocker):
-    DB.fetch_one = Mock()
-    DB.fetch_one.side_effect = [{
-        '_id': test_id,
-        'name': 'test prefab',
-        'authorId': test_id_2,
-        'visibility': 'private',
-        'rack': {}
-    },
-        {
-            '_id': test_id
-        }
-    ]
-    mocker.patch.object(DB, 'update', return_value={})
-    assert '403' in client.put(f'/v2/prefabs/{test_id}', json={'prefab': {'name': 'test prefab', 'rack': {}}}).status
-
-
-def test_update_prefab(client, mocker):
-    DB.fetch_one = Mock()
-    DB.fetch_one.side_effect = [{
-        '_id': test_id,
-        'name': 'test prefab',
-        'authorId': test_id,
-        'visibility': 'private',
-        'rack': {}
-    },
-        {
-            '_id': test_id
-        }
-    ]
-    mocker.patch.object(DB, 'update', return_value={})
-    res = client.put(f'/v2/prefabs/{test_id}', json={'prefab': {'name': 'test prefab', 'rack': {}}})
-    assert '200' in res.status
-
-
-def test_delete_prefab_non_existing(client, mocker):
-    mocker.patch.object(DB, 'fetch_one', return_value=None)
-    assert '404' in client.delete(f'/v2/prefabs/{test_id}').status
-
-
-def test_delete_prefab_different_user(client, mocker):
-    DB.fetch_one = Mock()
-    DB.fetch_one.side_effect = [{
-        '_id': test_id,
-        'name': 'test prefab',
-        'authorId': test_id_2,
-        'visibility': 'private',
-        'rack': {}
-    },
-        {
-            '_id': test_id
-        }
-    ]
-    mocker.patch.object(DB, 'delete_one', return_value=None)
-    assert '403' in client.delete(f'/v2/prefabs/{test_id}').status
-
-
-def test_delete_prefab(client, mocker):
-    DB.fetch_one = Mock()
-    DB.fetch_one.side_effect = [{
-        '_id': test_id,
-        'name': 'test prefab',
-        'authorId': test_id,
-        'visibility': 'private',
-        'rack': {}
-    },
-        {
-            '_id': test_id
-        }
-    ]
-    mocker.patch.object(DB, 'delete_one', return_value={'prefab': {'name': 'name'}})
-    res = client.delete(f'/v2/prefabs/{test_id}')
-    assert '200' in res.status
diff --git a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/test_endpoint.py b/opendc-web/opendc-web-api/opendc/api/v2/prefabs/test_endpoint.py
deleted file mode 100644
index 39a78c21..00000000
--- a/opendc-web/opendc-web-api/opendc/api/v2/prefabs/test_endpoint.py
+++ /dev/null
@@ -1,24 +0,0 @@
-from opendc.util.database import DB
-
-test_id = 24 * '1'
-
-
-def test_add_prefab_missing_parameter(client):
-    assert '400' in client.post('/v2/prefabs').status
-
-
-def test_add_prefab(client, mocker):
-    mocker.patch.object(DB, 'fetch_one', return_value={'_id': test_id, 'authorizations': []})
-    mocker.patch.object(DB,
-                        'insert',
-                        return_value={
-                            '_id': test_id,
-                            'datetimeCreated': '000',
-                            'datetimeLastEdited': '000',
-                            'authorId': test_id
-                        })
-    res = client.post('/v2/prefabs', json={'prefab': {'name': 'test prefab'}})
-    assert 'datetimeCreated' in res.json['content']
-    assert 'datetimeLastEdited' in res.json['content']
-    assert 'authorId' in res.json['content']
-    assert '200' in res.status