<?php

require_once "php/model/LocalUserDAO.php";
require_once 'php/model/Article.php';
require_once 'php/model/ArticleManager.php';

if (!isset($_SESSION["user"])) {
    header("Location: index.php?pfad=login");
    exit();
}

$dao = new LocalUserDAO();
$error = null;

try {
    $user = $dao->findUser($_SESSION["user_email"] ?? "");

    if (!$user) {
        $_SESSION = [];
        session_destroy();

        header("Location: index.php?pfad=login");
        exit();
    }

    if ($_SERVER["REQUEST_METHOD"] === "POST" && isset($_POST["saveProfile"])) {
        $oldEmail = $_SESSION["user_email"];
        $newEmail = $_POST["email"] ?? "";
        $vorname = $_POST["vorname"] ?? "";
        $nachname = $_POST["nachname"] ?? "";
        $password = $_POST["password"] ?? "";

        $existingUser = $dao->findUser($newEmail);

        if ($existingUser && $newEmail !== $oldEmail) {
            $error = "Diese E-Mail-Adresse wird bereits verwendet.";
        } else {
            $updated = $dao->updateUser(
                $oldEmail,
                $newEmail,
                $vorname,
                $nachname,
                $password
            );

            if ($updated) {
                $_SESSION["user"] = $vorname . " " . $nachname;
                $_SESSION["user_email"] = $newEmail;

                header("Location: index.php?pfad=profile");
                exit();
            } else {
                $error = "Die Daten konnten nicht gespeichert werden.";
            }
        }
    }

    $user = $dao->findUser($_SESSION["user_email"] ?? "");

    $articleManager = ArticleManager::getInstance();
    $userArticles = $articleManager->getArticlesByAuthor($_SESSION["user_email"]);

    if (!isset($userArticles)) {
        $_SESSION["message"] = "user_has_no_articles";
    }

} catch (Exception $e) {
    $_SESSION["message"] = "internal_error";
    exit();
}