importer.php

<?php
require __DIR__ . '/vendor/autoload.php';

use Automattic\WooCommerce\Client;
use Automattic\WooCommerce\HttpClient\HttpClientException;

function getWoocommerceConfig()
{

    $woocommerce = new Client(
        'https://www.your-domain.com',
        'ck_YOURCODEHERE',
        'cs_YOURCODEHERE',
        [
            'wp_api' => true,
            'version' => 'wc/v2',
            'query_string_auth' => false,
        ]
    );

    return $woocommerce;
}

/**
 * Parse JSON file.
 *
 * @param  string $file
 * @return array
 */
function getJsonFromFile()
{
    $file = '../db/productos.json';
    $json = json_decode(file_get_contents($file), true);
    return $json;
}

function checkProductBySku($skuCode)
{
    $woocommerce = getWoocommerceConfig();
    $products = $woocommerce->get('products');
    foreach ($products as $product) {
        $currentSku = strtolower($product['sku']);
        $skuCode = strtolower($skuCode);
        if ($currentSku === $skuCode) {
            return ['exist' => true, 'idProduct' => $product['id']];
        }
    }
    return ['exist' => false, 'idProduct' => null];
}


function createProducts()
{
    $woocommerce = getWoocommerceConfig();
    $products = getJsonFromFile();

    $imgCounter = 0;
    foreach ($products as $product) {
        /*Chec sku before create the product */
        $productExist = checkProductBySku($product['sku']);


        $imagesFormated = array();
        /*Main information */
        $name = $product['titulo'];
        $slug = $product['url'];
        $sku = $product['sku'];
        $description = $product['desc'];
        $images = $product['pics'];
        $articulos = $product['articulos'];
        $categories = $product['categorias'];
        $categoriesIds = array();
        foreach ($images as $image) {
            $imagesFormated[] = [
                'src' => $image,
                'position' => 0
            ]; /* TODO: FIX POSITON */
            $imgCounter++;
        }


        /* Prepare categories */
        foreach ($categories as $category) {
            $categoriesIds[] = ['id' => getCategoryIdByName($category)];
        }
        $finalProduct = [
            'name' => $name,
            'slug' => $slug,
            'sku' => $sku,
            'description' => $description,
            'images' => $imagesFormated,
            'categories' => $categoriesIds,
            'attributes' => getproductAtributesNames($articulos)

        ];


        if (!$productExist['exist']) {
             $productResult = $woocommerce->post('products', $finalProduct);
        } else {
            /*Update product information */
            $idProduct = $productExist['idProduct'];
            $woocommerce->put('products/' . $idProduct, $finalProduct);
        }
    }
}


function createCategories()
{
    $categoryValues = getCategories();
    $woocommerce = getWoocommerceConfig();
    
    foreach ($categoryValues as $value) {
        if (!checkCategoryByname($value)) {
            $data = [
                'name' => $value
            ];
            $woocommerce->post('products/categories', $data);
        }
    }
}

function checkCategoryByName($categoryName)
{
    $woocommerce = getWoocommerceConfig();
    $categories = $woocommerce->get('products/categories');
    foreach ($categories as $category) {
        if ($category['name'] === $categoryName) {
            return true;
        }
    }
    return false;
}

/** CATEGORIES  **/
function getCategories()
{
    $products = getJsonFromFile();
    $categories = array_column($products, 'categorias');

    foreach ($categories as $categoryItems) {
        foreach ($categoryItems as $categoryValue) {
            $categoryPlainValues[] = $categoryValue;
        }
    }
    $categoryList = array_unique($categoryPlainValues);
    return $categoryList;
}


function getCategoryIdByName($categoryName)
{
    $woocommerce = getWoocommerceConfig();
    $categories = $woocommerce->get('products/categories');
    foreach ($categories as $category) {
        if ($category['name'] == $categoryName) {
            return $category['id'];
        }
    }
}

function getproductAtributesNames($articulos)
{
    $keys = array();
    foreach ($articulos as $articulo) {
        $terms = $articulo['config'];
        foreach ($terms as $key => $term) {
            array_push($keys, $key);
        }
    }
       /* remove repeted keys*/
    $keys = array_unique($keys);
    $configlist = array_column($articulos, 'config');
    $options = array();
    foreach ($keys as $key) {
        $attributes = array(
            array(
                'name' => $key,
                'slug' => 'attr_' . $key,
                'visible' => true,
                'variation' => true,
                'options' => getTermsByKeyName($key, $configlist)
            )
        );
    }
    return $attributes;
}

function getTermsByKeyName($keyName, $configList)
{
    //var_dump($configList);
    $options = array();
    foreach ($configList as $config) {
        foreach ($config as $key => $term) {
            if ($key == $keyName) {
                array_push($options, $term);
            }
        }
    }
    return $options;
}

function prepareInitialConfig()
{
    echo ('Importing data, wait...')."\n";
    createCategories();
    createProducts();
    echo ('Done!')."\n";
}

prepareInitialConfig();


?>

Hi, thanks for the code, where do i put my importer.php file?