new repository for authentication logic

shared/selene/account/repository/authentication.py

@@ -0,0 +1,31 @@
+from os import path
+
+from selene.util.db import DatabaseRequest, Cursor
+from ..entity.account import Account
+
+SQL_DIR = path.join(path.dirname(__file__), 'sql')
+
+
+class AuthenticationRepository(object):
+    def __init__(self, db):
+        self.db = db
+
+    def get_account_from_credentials(
+            self, email: str, password: str
+    ) -> Account:
+        """
+        Validate email/password combination against the database
+
+        :param email: the user provided email address
+        :param password: the user provided password
+        :return: the matching account record, if one is found
+        """
+        query = DatabaseRequest(
+            file_path=path.join(SQL_DIR, 'get_account_from_credentials.sql'),
+            args=dict(email_address=email, password=password),
+        )
+        cursor = Cursor(self.db)
+        sql_results = cursor.select_one(query)
+
+        if sql_results is not None:
+            return Account(**sql_results)