<?php
session_start();
require_once __DIR__ . '/../db/config.php';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $email = $_POST['email'] ?? '';
    $password = $_POST['password'] ?? '';

    if (empty($email) || empty($password)) {
        header('Location: /login.php?error=invalid_input');
        exit;
    }

    try {
        $pdo = db();

        $stmt = $pdo->prepare("SELECT id, password, role FROM users WHERE email = ?");
        $stmt->execute([$email]);
        $user = $stmt->fetch();

        if ($user && password_verify($password, $user['password'])) {
            // Password is correct, start session
            $_SESSION['user_id'] = $user['id'];
            $_SESSION['user_role'] = $user['role'];

            header('Location: /dashboard.php');
            exit;
        } else {
            header('Location: /login.php?error=auth_failed');
            exit;
        }

    } catch (PDOException $e) {
        header('Location: /login.php?error=db_error');
        exit;
    }
}