buidl out some basic functionality

src/Controller/AuthController.php

@@ -0,0 +1,62 @@
+<?php
+namespace Hpz937\BillReminder\Controller;
+
+use Hpz937\BillReminder\Database\SQLiteAdapter;
+use Hpz937\BillReminder\User\User;
+
+class AuthController {
+    protected $db;
+
+    public function __construct() {
+        $this->db = new SQLiteAdapter();
+    }
+
+    public function showLoginForm() {
+        require PROJECT_ROOT . '/views/auth/login.php';
+    }
+
+    public function login() {
+        $username = $_POST['username'] ?? '';
+        $password = $_POST['password'] ?? '';
+
+        if (empty($username) || empty($password)) {
+            $error = 'Username and password are required.';
+            require PROJECT_ROOT . '/views/auth/login.php';
+            return;
+        }
+
+        $user = new User($this->db);
+        if ($user->login($username, $password)) {
+            header('Location: /dashboard');
+            exit;
+        } else {
+            $error = 'Login failed. Please check your credentials.';
+            require PROJECT_ROOT . '/views/auth/login.php';
+        }
+    }
+
+    public function showRegistrationForm() {
+        require PROJECT_ROOT . '/views/auth/register.php';
+    }
+
+    public function register() {
+        $username = $_POST['username'] ?? '';
+        $password = $_POST['password'] ?? '';
+        $email = $_POST['email'] ?? '';
+
+        if (empty($username) || empty($password) || empty($email)) {
+            $error = 'All fields are required.';
+            require PROJECT_ROOT . '/views/auth/register.php';
+            return;
+        }
+
+        $user = new User($this->db);
+        if ($user->register($username, $password, $email)) {
+            header('Location: /');
+            exit;
+        } else {
+            $error = 'Registration failed. Please try again.';
+            require PROJECT_ROOT . '/views/auth/register.php';
+        }
+    }
+}