<?php
class OrderMapper {

    /**
     * Convert a Reverb order object into an OpenCart addOrder() data array.
     *
     * @param array $reverb_order   Order object from GET /my/orders/{number}.
     * @param array $oc_product     Matching OC product row (product_id, name, model, price).
     * @param array $store_info     ['store_id', 'store_name', 'store_url', 'language_id',
     *                               'currency_id', 'currency_code', 'currency_value'].
     * @param int   $order_status_id  Default order status ID (typically 1 = Pending).
     * @return array                  Ready to pass to model_checkout_order->addOrder().
     */
    public static function toOpenCart(array $reverb_order, array $oc_product, array $store_info, $order_status_id = 1) {
        // --- Buyer name split ---
        $buyer_name  = isset($reverb_order['buyer_name']) ? $reverb_order['buyer_name'] : 'Reverb Buyer';
        $name_parts  = explode(' ', trim($buyer_name), 2);
        $first_name  = $name_parts[0];
        $last_name   = isset($name_parts[1]) ? $name_parts[1] : '';

        $buyer_email = isset($reverb_order['buyer_email']) ? $reverb_order['buyer_email'] : '';

        // --- Shipping address ---
        $ship = isset($reverb_order['shipping_address']) ? $reverb_order['shipping_address'] : [];

        $ship_name    = isset($ship['name']) ? $ship['name'] : $buyer_name;
        $ship_parts   = explode(' ', trim($ship_name), 2);
        $ship_first   = $ship_parts[0];
        $ship_last    = isset($ship_parts[1]) ? $ship_parts[1] : '';
        $ship_addr1   = isset($ship['street_address']) ? $ship['street_address'] : '';
        $ship_city    = isset($ship['locality'])       ? $ship['locality']       : '';
        $ship_state   = isset($ship['region'])         ? $ship['region']         : '';
        $ship_post    = isset($ship['postal_code'])    ? $ship['postal_code']    : '';
        $ship_country = isset($ship['country_code'])   ? strtoupper($ship['country_code']) : 'AU';

        // --- Totals ---
        $total_amount = isset($reverb_order['total']['amount'])
            ? (float)$reverb_order['total']['amount']
            : (float)$oc_product['price'] * (isset($reverb_order['quantity']) ? (int)$reverb_order['quantity'] : 1);

        $quantity = isset($reverb_order['quantity']) ? (int)$reverb_order['quantity'] : 1;

        $order_data = [
            // Store
            'invoice_prefix'        => 'INV-',
            'invoice_no'            => 0,
            'store_id'              => $store_info['store_id'],
            'store_name'            => $store_info['store_name'],
            'store_url'             => $store_info['store_url'],
            // Customer (guest)
            'customer_id'           => 0,
            'customer_group_id'     => 1,
            'firstname'             => $first_name,
            'lastname'              => $last_name,
            'email'                 => $buyer_email,
            'telephone'             => '',
            'fax'                   => '',
            'custom_field'          => [],
            // Payment (use shipping address for Reverb orders)
            'payment_firstname'     => $ship_first,
            'payment_lastname'      => $ship_last,
            'payment_company'       => '',
            'payment_address_1'     => $ship_addr1,
            'payment_address_2'     => '',
            'payment_city'          => $ship_city,
            'payment_postcode'      => $ship_post,
            'payment_country'       => $ship_country,
            'payment_country_id'    => 0,
            'payment_zone'          => $ship_state,
            'payment_zone_id'       => 0,
            'payment_address_format'=> '',
            'payment_custom_field'  => [],
            'payment_method'        => 'Reverb',
            'payment_code'          => 'reverb',
            // Shipping
            'shipping_firstname'    => $ship_first,
            'shipping_lastname'     => $ship_last,
            'shipping_company'      => '',
            'shipping_address_1'    => $ship_addr1,
            'shipping_address_2'    => '',
            'shipping_city'         => $ship_city,
            'shipping_postcode'     => $ship_post,
            'shipping_country'      => $ship_country,
            'shipping_country_id'   => 0,
            'shipping_zone'         => $ship_state,
            'shipping_zone_id'      => 0,
            'shipping_address_format' => '',
            'shipping_custom_field' => [],
            'shipping_method'       => 'Reverb Shipping',
            'shipping_code'         => 'reverb.reverb',
            // Misc
            'comment'               => 'Reverb Order #' . ($reverb_order['order_number'] ?? ''),
            'total'                 => $total_amount,
            'affiliate_id'          => 0,
            'commission'            => 0,
            'language_id'           => $store_info['language_id'],
            'currency_id'           => $store_info['currency_id'],
            'currency_code'         => $store_info['currency_code'],
            'currency_value'        => $store_info['currency_value'],
            'ip'                    => '',
            'forwarded_ip'          => '',
            'user_agent'            => '',
            'accept_language'       => '',
            'order_status_id'       => $order_status_id,
            // Products
            'products' => [
                [
                    'product_id'   => (int)$oc_product['product_id'],
                    'name'         => $oc_product['name'],
                    'model'        => $oc_product['model'],
                    'quantity'     => $quantity,
                    'price'        => (float)$oc_product['price'],
                    'total'        => (float)$oc_product['price'] * $quantity,
                    'tax'          => 0.00,
                    'reward'       => 0,
                    'option'       => [],
                    'download'     => [],
                    'subscription' => '',
                    'tax_class_id' => 0,
                ],
            ],
            // Totals
            'totals' => [
                [
                    'code'       => 'sub_total',
                    'title'      => 'Sub-Total',
                    'value'      => $total_amount,
                    'sort_order' => 1,
                ],
                [
                    'code'       => 'total',
                    'title'      => 'Total',
                    'value'      => $total_amount,
                    'sort_order' => 9,
                ],
            ],
            'vouchers' => [],
        ];

        return $order_data;
    }
}