Update dependency attrs to v21.4.0

This MR contains the following updates:

Package	Update	Change
attrs (source, changelog)	minor	==21.2.0 -> ==21.4.0

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areas/auth/auth.py

-from flask import request, jsonify
+from flask import jsonify, request
 from flask_jwt_extended import create_access_token
 from flask_cors import cross_origin
+from datetime import timedelta
 
 from areas import api_v1
+from config import *
+from helpers import HydraOauth, BadRequest
 
-USERNAME = 'admin'
-PASSWORD = 'admin'
 
-
-@api_v1.route('/login', methods=['POST'])
+@api_v1.route("/login", methods=["POST"])
 @cross_origin()
 def login():
-    username = request.json.get('username')
-    password = request.json.get('password')
+    authorization_url = HydraOauth.authorize()
+    return jsonify({"authorizationUrl": authorization_url})
+
+
+@api_v1.route("/hydra/callback")
+@cross_origin()
+def hydra_callback():
+    state = request.args.get("state")
+    if state == None:
+        raise BadRequest("Missing state query param")
 
-    if username != USERNAME or password != PASSWORD:
-        return jsonify({'errorMessage': 'Invalid username or password'}), 401
+    token = HydraOauth.get_token(state)
+    access_token = create_access_token(
+        identity=token, expires_delta=timedelta(days=365)
+    )
 
-    access_token = create_access_token(identity=username)
-    return jsonify({'username': USERNAME, 'access_token': access_token})
+    return jsonify({"access_token": access_token})