<?php

class CreatingAndTransmittingParametersForInvoicing
{
    private int $marketPlace;
    private string $secretKey;
    private $message;
    private $items_receipt;
    private $jsonString;
    private $request_url;
    private $sbpRedirectUrl;

    public function __construct($jsonString)
    {
        $this->jsonString = $jsonString;
        $this->marketPlace = $this->jsonString['marketPlace'] ?? null;
        $this->secretKey = $this->jsonString['secretKey'] ?? null;
        $this->request_url = $this->jsonString['domain'] ?? null;
        $this->sbpRedirectUrl = $this->jsonString['sbpRedirectUrl'] ?? null;

        $this->items_receipt = [];

        $optionalFields = 
        [
            "marketPlace","amount","orderId","paymentMethod","showOrderId",
            "details","customerAccount","customerComment","customerEmail",
            "customerPhone","expirationFromNow","expirationDateTime",
            "recurrentable","nonce",

            "user","userPhone","debug","sbpSubscriptionPurpose",
            
        ];
        foreach($optionalFields as $field) 
        {
            $this->{$field} = $this->jsonString[$field] ?? null;
        }
    }

    public function addItemToReceipt(string $text, int $quantity, float $price, float $amount)
    {
        $this->items_receipt[] = [
            "text" => $text,
            "quantity" => $quantity,
            "price" => $price,
            "amount" => $amount,
            "tax" => "vat110",
            "type" => "full_prepayment",
            "object" => "commodity",
            "unit" => "шт."
        ];
    }

    public function processPayment2()
    {

        $sum = 0;
        foreach ($this->items_receipt as $item)
        {
            $sum += $item['amount'];
        }

        $receipt_info = [];
        $receipt_info_fd = [];

        if ($this->marketPlace != null) 
        {
            $this->message = [
                "marketPlace"=> $this->jsonString['marketPlace'],
                "orderId"=> $this->jsonString['orderId'],
                "amount"=> (int)$sum,
                "requestQrCodeImageUrl"=> false,
            ];
        }       

        $optionalFields = 
        [
            "marketPlace","amount","orderId","paymentMethod","showOrderId",
            "details","customerAccount","customerComment","customerEmail",
            "customerPhone","expirationFromNow","expirationDateTime",
            "recurrentable","nonce"
        ];

        foreach ($optionalFields as $field) {
            if ($this->{$field} !== null) {
                $this->message = array_merge($this->message, [$field => $this->{$field}]);
            }
        }
        $this->message = array_merge($this->message, ["requestQrCodeImageUrl"=> false]);

        $receipt_info_fd["fdReceipt"] = ["taxSystem" => "", "items" => $this->items_receipt];
        $receipt_info["data"] = ["requestQrCodeImageUrl"=> false,"requestQrCodeImage"=> false,"fdReceipt"=>$receipt_info_fd["fdReceipt"],"sbpRedirectUrl"=>filter_var($this->sbpRedirectUrl, FILTER_VALIDATE_URL) ? $this->sbpRedirectUrl : null];

        $this->message = array_merge($this->message + $receipt_info);

        $newJsonString = json_encode($this->message);

        $values = json_decode($newJsonString, true);

        $messageTxt = json_encode($values);
        $signature = hash('sha256', $messageTxt.$this->secretKey);

        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => "https://".$this->request_url."/merchantApi/pay",
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => $messageTxt,
            CURLOPT_HTTPHEADER => [
                "Signature: $signature",
                "Content-Type: application/json"
            ]
        ]);

        $res = curl_exec($ch);

        return $res;
    }

}

?>