<?php
require_once 'db/config.php';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $id = $_POST['id'] ?? null;
    $name = $_POST['name'] ?? null;
    $description = $_POST['description'] ?? null;

    if ($id && $name && $description) {
        try {
            $pdo = db();
            $stmt = $pdo->prepare("UPDATE processes SET name = :name, description = :description WHERE id = :id");
            $stmt->bindParam(':name', $name, PDO::PARAM_STR);
            $stmt->bindParam(':description', $description, PDO::PARAM_STR);
            $stmt->bindParam(':id', $id, PDO::PARAM_INT);

            if ($stmt->execute()) {
                header('Location: index.php?success=processupdated');
                exit();
            } else {
                header('Location: index.php?error=updatefailed');
                exit();
            }
        } catch (PDOException $e) {
            error_log("DB Error: " . $e->getMessage());
            header('Location: index.php?error=dberror');
            exit();
        }
    } else {
        header('Location: index.php?error=emptyfields');
        exit();
    }
} else {
    header('Location: index.php?error=invalidrequest');
    exit();
}