From 8b7c598407a5fea9a3d78473e72df87606998cd4 Mon Sep 17 00:00:00 2001
From: Frederick Muriuki Muriithi
Date: Fri, 4 Aug 2023 10:10:28 +0300
Subject: Copy over files from GN3 repository.

---
 gn_auth/auth/authentication/__init__.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 gn_auth/auth/authentication/__init__.py

(limited to 'gn_auth/auth/authentication/__init__.py')

diff --git a/gn_auth/auth/authentication/__init__.py b/gn_auth/auth/authentication/__init__.py
new file mode 100644
index 0000000..42ceacb
--- /dev/null
+++ b/gn_auth/auth/authentication/__init__.py
@@ -0,0 +1,24 @@
+"""Handle authentication requests"""
+
+import bcrypt
+
+def credentials_in_database(cursor, email: str, password: str) -> bool:
+    """Check whether credentials are in the database."""
+    if len(email.strip()) == 0 or len(password.strip()) == 0:
+        return False
+
+    cursor.execute(
+        ("SELECT "
+         "users.email, user_credentials.password "
+         "FROM users LEFT JOIN user_credentials "
+         "ON users.user_id = user_credentials.user_id "
+         "WHERE users.email = :email"),
+        {"email": email})
+    results = cursor.fetchall()
+    if len(results) == 0:
+        return False
+
+    assert len(results) == 1, "Expected one row."
+    row = results[0]
+    return (email == row[0] and
+            bcrypt.checkpw(password.encode("utf-8"), row[1]))
-- 
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