<?php
if (session_status() === PHP_SESSION_NONE) {
    session_start();
}
include 'db/config.php';

if (!isset($_SESSION['user_role']) || !in_array($_SESSION['user_role'], ['Administrador', 'admin'])) {
    echo json_encode(['success' => false, 'error' => 'No autorizado']);
    exit();
}

if ($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_FILES['foto_producto']) && isset($_POST['id'])) {
    $db = db();
    $id = $_POST['id'];
    
    if ($_FILES['foto_producto']['error'] == 0) {
        $target_dir = "assets/uploads/marketing_images/";
        if (!is_dir($target_dir)) {
            mkdir($target_dir, 0777, true);
        }
        $file_extension = pathinfo($_FILES["foto_producto"]["name"], PATHINFO_EXTENSION);
        $file_name = uniqid() . '_v3.' . $file_extension;
        $target_file = $target_dir . $file_name;

        if (move_uploaded_file($_FILES["foto_producto"]["tmp_name"], $target_file)) {
            try {
                // Opcional: borrar imagen anterior si existe
                $stmt_old = $db->prepare("SELECT foto_producto FROM marketing_videos_v3 WHERE id = ?");
                $stmt_old->execute([$id]);
                $old_photo = $stmt_old->fetchColumn();
                if ($old_photo && file_exists($old_photo)) {
                    unlink($old_photo);
                }

                $stmt = $db->prepare("UPDATE marketing_videos_v3 SET foto_producto = ? WHERE id = ?");
                $stmt->execute([$target_file, $id]);
                
                echo json_encode(['success' => true, 'path' => $target_file]);
            } catch (Exception $e) {
                echo json_encode(['success' => false, 'error' => $e->getMessage()]);
            }
        } else {
            echo json_encode(['success' => false, 'error' => 'Error al mover el archivo']);
        }
    } else {
        echo json_encode(['success' => false, 'error' => 'Error en la subida: ' . $_FILES['foto_producto']['error']]);
    }
} else {
    echo json_encode(['success' => false, 'error' => 'Solicitud inválida']);
}
?>