chapter 05: adding authentication function that violates SRP, open cl…

…ose andependency inversion among others

chapter-05-the-dependency-inversion-principle/authentication.js

@@ -0,0 +1,20 @@
+function authentication(connection) {
+    function checkCredentials(username, password) {
+        const user = connection.fetchAssoc(
+            'SELECT * FROM users WHERE username = ?',
+            [username]
+        );
+
+        if (user === null) {
+            new Error('User not found');
+        }
+
+        //validate password...
+    }
+
+    return {
+        checkCredentials,
+    };
+}
+
+module.exports = authentication;