const poscredit_loadedChElem = '.gcpay-widget-payment-methods-list';
let poscredit_isContainerLoad = false;
let poscredit_checkInterval = null;
let poscredit_attempts = 0;
const poscredit_maxAttempts = 20; // Максимальное число проверок (10 секунд при интервале 500 мс)
const poscredit_checkDelay = 500; // Интервал проверки (500 мс)


function poscredit_load() {
    var service = document.createElement('script');
    service.src = 'https://api.b2pos.ru/shop/v4/connect.js';
    service.type = 'text/javascript';
    service.charset = 'UTF-8';
    document.documentElement.appendChild(service);

    var serviceCss = document.createElement('link');
    serviceCss.href = "https://api.b2pos.ru/shop/citi/connect.css";
    serviceCss.rel = "stylesheet";
    document.documentElement.appendChild(serviceCss);
}


function poscredit_checkForElement() {
    // Предотвращаем дублирование интервалов
    if (poscredit_checkInterval) return;

    poscredit_checkInterval = setInterval(() => {

        const element = document.querySelector(poscredit_loadedChElem);

        if (element) {
            console.log('PosCredit Элемент найден!');
            poscredit_load();
            poscredit_injectPosBtn();
            clearInterval(poscredit_checkInterval);
            poscredit_checkInterval = null;
        } else {
            poscredit_attempts++;
            console.log(`PosCredit Попытка ${poscredit_attempts}/${poscredit_maxAttempts} — элемент не найден`);
            if (poscredit_attempts >= poscredit_maxAttempts) {
                console.warn('PosCredit Лимит попыток исчерпан, останавливаем проверку');
                clearInterval(poscredit_checkInterval);
                poscredit_checkInterval = null;
            }
        }
    }, poscredit_checkDelay);
}


function poscredit_getProductData() {
    let resultObj = {};
    const priceElem = document.querySelector('.gcpay-widget .gcpay-widget-order-price');
    if (priceElem) {
        resultObj['price'] = priceElem.innerText.replace(/[^+\d]/g, '');
    }
    const orderElem = document.querySelector('.gcpay-widget .gcpay-widget-head h1 span');
    if (orderElem) {
        resultObj['id'] = orderElem.innerText.replace(/[^+\d]/g, '');
        resultObj['name'] = `Оплата заказа ${orderElem.innerText}`;
    }
    resultObj['count'] = 1;
    return [resultObj];
}

function poscredit_callWidget() {

    const accessID = "311532";
    const tradeID = "214624";

    const productsList = poscredit_getProductData();

    const posParams = {
        order: productsList[0]['id'],
        tradeID,
        products: productsList,
        creditType: 1,
        creditTermFrom: '6',
        creditTermTo: '36'
    };

    poscreditServices('creditProcess', accessID, posParams, function (result) {
        if (result.success === false) {
            alert('Произошла ошибка при попытке оформить кредит. Попробуйте позднее...');
        }
    });
}

function poscredit_injectPosBtn() {
    const btnTempl = `<button class="gcpay-widget-payment-method-btn poscredit-btn" style="margin-bottom: 5px; position: relative;" onclick="poscredit_callWidget();">
                            <svg style="position: absolute; left: 15px; top: 15px;" width="34" height="34" viewBox="0 0 64 64" fill="none" xmlns="http://www.w3.org/2000/svg">
                                <rect x="2.5" y="2.5" width="59" height="59" rx="12.5" fill="#4E27B6" stroke="#3A2399" stroke-width="5"/>
                                <path d="M23 48V16H33.1531C35.0757 16 36.6428 16.3687 37.8543 17.1062C39.0658 17.8173 39.9613 18.8576 40.5407 20.2272C41.1465 21.5967 41.4494 23.256 41.4494 25.2049C41.4494 27.4963 41.0543 29.2872 40.2642 30.5778C39.5004 31.8683 38.4469 32.7901 37.1037 33.3432C35.7605 33.87 34.2198 34.1333 32.4815 34.1333H29.5185V48H23ZM29.5185 29.5506H31.8099C32.758 29.5506 33.4823 29.4058 33.9827 29.1161C34.5095 28.8 34.865 28.3128 35.0494 27.6543C35.2337 26.9959 35.3259 26.1531 35.3259 25.1259C35.3259 24.1514 35.2469 23.335 35.0889 22.6765C34.9572 22.0181 34.6412 21.5045 34.1407 21.1358C33.6403 20.7671 32.8502 20.5827 31.7704 20.5827H29.5185V29.5506Z" fill="white"/>
                            </svg>
                            <span>Кредит в банках-партнёрах</span>
                        </button>`;
    const prevElem = document.querySelector(poscredit_loadedChElem);
    if (prevElem) {
        prevElem.insertAdjacentHTML('beforeEnd', btnTempl);
    }
}

poscredit_checkForElement();