Add MySQL schema dump for phpMyAdmin

app/Services/AuthService.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\User;
+use App\Support\PasswordHasher;
+
+class AuthService
+{
+    private static ?self $instance = null;
+    private ?User $user = null;
+
+    private function __construct()
+    {
+        if (session_status() === PHP_SESSION_NONE) {
+            session_start();
+        }
+
+        if (isset($_SESSION['user_id'])) {
+            $this->user = User::find((int) $_SESSION['user_id']);
+        }
+    }
+
+    public static function getInstance(): self
+    {
+        if (self::$instance === null) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
+    public function attempt(string $email, string $password): bool
+    {
+        $user = User::findByEmail($email);
+        if (!$user || !$user->is_active) {
+            return false;
+        }
+
+        if (!PasswordHasher::verify($password, $user->pass_hash)) {
+            return false;
+        }
+
+        $_SESSION['user_id'] = $user->id;
+        $this->user = $user;
+        return true;
+    }
+
+    public function logout(): void
+    {
+        $_SESSION = [];
+        if (ini_get('session.use_cookies')) {
+            $params = session_get_cookie_params();
+            setcookie(session_name(), '', time() - 42000, $params['path'], $params['domain'], $params['secure'], $params['httponly']);
+        }
+        session_destroy();
+        $this->user = null;
+    }
+
+    public function check(): bool
+    {
+        return $this->user !== null;
+    }
+
+    public function user(): ?User
+    {
+        return $this->user;
+    }
+}