implement login

ki/auth.py

@@ -0,0 +1,32 @@
+import uuid
+import yaml
+
+from app import app, db
+from ki.models import User, Token
+
+
+def auth(username, password):
+    auth_file_path = app.config["KI_DATA_DIR"] + "/auth.yml"
+
+    with open(auth_file_path, "r") as auth_file_stream:
+        users = yaml.safe_load(auth_file_stream)
+
+        if username not in users:
+            return None
+
+        auth_user = users[username]
+
+        if auth_user["password"] != password:
+            return None
+
+        user = User.query.filter(User.auth_id.__eq__(username)).first()
+
+        if user is None:
+            user = User(nickname=username, auth_id=username)
+            db.session.add(user)
+
+        token = Token(token=str(uuid.uuid4()), user=user)
+        db.session.add(token)
+        db.session.commit()
+
+    return token