Many api changes

- Added basic jwt auth
- Added keyword endpoints
- added share/symbol endpoints
- updated postman
- refactoring

webservice/helper_functions.py

@@ -1,6 +1,13 @@
 import hashlib
+import os
 import uuid
 
+import jwt
+from flask import request
+
+from webservice.db import db
+from webservice.models import User
+
 
 def hash_password(password):
     salt = uuid.uuid4().hex
@@ -9,4 +16,28 @@ def hash_password(password):
 
 def check_password(hashed_password, user_password):
     password, salt = hashed_password.split(':')
-    return password == hashlib.sha256(salt.encode() + user_password.encode()).hexdigest()
+    return password == hashlib.sha256(salt.encode() + user_password.encode()).hexdigest()
+
+
+def get_token():
+    token = None
+    if 'Authorization' in request.headers:
+        token = request.headers['Authorization'].split(" ")[1]
+
+    return token
+
+
+def extract_token_data(token):
+    if token is not None:
+        try:
+            return jwt.decode(token, os.getenv('SECRET_KEY'), algorithms=["HS256"])
+        except:
+            return None
+
+
+def get_username_from_token_data(token_data):
+    return token_data['username']
+
+
+def get_user_id_from_username(username):
+    return db.session.query(User).filter_by(username=username).first().user_id