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

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

    try {
        $pdo = db();
        // Use INSERT ... ON DUPLICATE KEY UPDATE to either create or update the banner text
        $sql = "INSERT INTO configuracion (clave, valor) VALUES (:clave, :valor)
                ON DUPLICATE KEY UPDATE valor = :valor";
        $stmt = $pdo->prepare($sql);
        $stmt->execute([
            ':clave' => 'banner_text',
            ':valor' => $banner_text
        ]);

        // Redirect back to the info page
        header('Location: configuracion.php');
        exit;

    } catch (PDOException $e) {
        // For a real app, you might log this error and show a user-friendly message
        die("Error al guardar en la base de datos: " . $e->getMessage());
    }
} else {
    // If not a POST request, just redirect away
    header('Location: info_producto.php');
    exit;
}