<?php
private function _meta($type,$props,$variation=false) {
    $fields = array();

    switch ($type) {
      case "product":
        $_attributes = [
          "MyCustomAttribute"  => [
            "name"          => "MyCustomAttribute",
            "value"         => "The Value",
            "position"      => 1,
            "is_visible"    => 0,
            "is_variation"  => 0,
            "is_taxanomy"   => 0
          ]
        }
        $fields = array(
          "algolia_posts_product_records_count" => 1,
          "_sku"                                  => $props["sku"],
          "_sale_price_dates_from"              => "",
          "_sale_price_dates_to"                => "",
          "total_sales"                         => 0,
          "_tax_status"                         => "taxable",
          "_tax_class"                          => "",
          "_manage_stock"                       => "no",
          "_backorders"                         => "no",
          "_sold_individually"                  => "no",
          "_weight"                             => "",
          "_length"                             => "",
          "_width"                              => "",
          "_height"                             => "",
          "_upsell_ids"                         => "a:0:{}",
          "_crosssell_ids"                      => "a:0:{}",
          "_purchase_note"                      => "",
          "_default_attributes"                 => "a:0:{}",
          "_virtual"                            => "no",
          "_downloadable"                       => "no",
          "_product_image_gallery"              => "",
          "_download_limit"                     => "0",
          "_download_expiry"                    => "0",
          "_thumbnail_id"                       => $props["attachment_id"],
          "_low_stock_amount"                   => "",
          "_stock"                              => null,
          "_stock_status"                       => "instock",
          "_wc_average_rating"                  => $props["_wc_average_rating"],
          "_wc_rating_count"                    => "1",
          "_wc_review_count"                    => "1",
          "_downloadable_files"                 => "a:0:{}",
          "_product_attributes"                 => serialize($_attributes),
          "_product_version"                    => "3.5.7",
          "_price"                              => $props["sale_price"],
          "_regular_price"                      => $props["regular_price"],
          "_sale_price"                         => $props["sale_price"],
          "_edit_lock"                          => "",
          "_sold_individually"                  => "no"
        );
        if ($variation) $fields["_default_attributes"] = serialize(["variant"=>$props["variant"]]);
        break;
      case "variant":
        $fields = array(
          "_variation_description"  => "",
          "_sku"                    => "",
          "_regular_price"          => $props["regular_price"],
          "_sale_price"             => $props["sale_price"],
          "_sale_price_dates_from"  => "",
          "_sale_price_dates_to"    => "",
          "total_sales"             => "0",
          "_tax_status"             => "taxable",
          "_tax_class"              => "parent",
          "_manage_stock"           => "no",
          "_backorders"             => "no",
          "_sold_individually"      => "no",
          "_weight"                 => "",
          "_length"                 => "",
          "_width"                  => "",
          "_height"                 => "",
          "_upsell_ids"             => "a:0:{}",
          "_crosssell_ids"          => "a:0:{}",
          "_purchase_note"          => "",
          "_default_attributes"     => "a:0:{}",
          "_virtual"                => "no",
          "_downloadable"           => "no",
          "_product_image_gallery"  => "",
          "_download_limit"         => "0",
          "_download_expiry"        => "0",
          "_thumbnail_id"           => $props["_thumbnail_id"],
          "_low_stock_amount"       => "",
          "_stock"                  => null,
          "_stock_status"           => "instock",
          "_wc_average_rating"      => "0",
          "_wc_rating_count"        => "a:0:{}",
          "_wc_review_count"        => "0",
          "_downloadable_files"     => "a:0:{}",
          "attribute_variant"       => $props["variant"],
          "_price"                  => $props["sale_price"],
          "_product_version"        => "3.5.7"
        );
        break;
      case "attachment":
        $file = sprintf('%d/%d/%s',date('Y'),date('m'),$props["image"]."jpg");
        $data = [
          "width"     => 1,
          "height"    => 1,
          "file"      => $file,
          "meta_data" => [
            "aperture"          => "0",
            "credit"            => "",
            "camera"            => "",
            "caption"           => "",
            "created_timestamp" => "0",
            "copyright"         => "",
            "focal_length"      => "0",
            "iso"               => "0",
            "shutter_speed"     => "0",
            "title"             => "",
            "orientation"       => "0"
          ]
        ];
        $fields = array(
          "_wp_attached_file"       => $file,
          "_wp_attachment_metadata" => serialize($data),
          "_wc_attachment_source"   => $props["url"]
        );
        break;
    }

    return $fields;
}
?>