(function () {


    let MD5 = function (d) {
        var r = M(V(Y(X(d), 8 * d.length)));
        return r.toLowerCase()
    };

    function M(d) {
        for (var _, m = "0123456789ABCDEF", f = "", r = 0; r < d.length; r++) _ = d.charCodeAt(r), f += m.charAt(_ >>> 4 & 15) + m.charAt(15 & _);
        return f
    }

    function X(d) {
        for (var _ = Array(d.length >> 2), m = 0; m < _.length; m++) _[m] = 0;
        for (m = 0; m < 8 * d.length; m += 8) _[m >> 5] |= (255 & d.charCodeAt(m / 8)) << m % 32;
        return _
    }

    function V(d) {
        for (var _ = "", m = 0; m < 32 * d.length; m += 8) _ += String.fromCharCode(d[m >> 5] >>> m % 32 & 255);
        return _
    }

    function Y(d, _) {
        d[_ >> 5] |= 128 << _ % 32, d[14 + (_ + 64 >>> 9 << 4)] = _;
        for (var m = 1732584193, f = -271733879, r = -1732584194, i = 271733878, n = 0; n < d.length; n += 16) {
            var h = m, t = f, g = r, e = i;
            f = md5_ii(f = md5_ii(f = md5_ii(f = md5_ii(f = md5_hh(f = md5_hh(f = md5_hh(f = md5_hh(f = md5_gg(f = md5_gg(f = md5_gg(f = md5_gg(f = md5_ff(f = md5_ff(f = md5_ff(f = md5_ff(f, r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 0], 7, -680876936), f, r, d[n + 1], 12, -389564586), m, f, d[n + 2], 17, 606105819), i, m, d[n + 3], 22, -1044525330), r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 4], 7, -176418897), f, r, d[n + 5], 12, 1200080426), m, f, d[n + 6], 17, -1473231341), i, m, d[n + 7], 22, -45705983), r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 8], 7, 1770035416), f, r, d[n + 9], 12, -1958414417), m, f, d[n + 10], 17, -42063), i, m, d[n + 11], 22, -1990404162), r = md5_ff(r, i = md5_ff(i, m = md5_ff(m, f, r, i, d[n + 12], 7, 1804603682), f, r, d[n + 13], 12, -40341101), m, f, d[n + 14], 17, -1502002290), i, m, d[n + 15], 22, 1236535329), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 1], 5, -165796510), f, r, d[n + 6], 9, -1069501632), m, f, d[n + 11], 14, 643717713), i, m, d[n + 0], 20, -373897302), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 5], 5, -701558691), f, r, d[n + 10], 9, 38016083), m, f, d[n + 15], 14, -660478335), i, m, d[n + 4], 20, -405537848), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 9], 5, 568446438), f, r, d[n + 14], 9, -1019803690), m, f, d[n + 3], 14, -187363961), i, m, d[n + 8], 20, 1163531501), r = md5_gg(r, i = md5_gg(i, m = md5_gg(m, f, r, i, d[n + 13], 5, -1444681467), f, r, d[n + 2], 9, -51403784), m, f, d[n + 7], 14, 1735328473), i, m, d[n + 12], 20, -1926607734), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 5], 4, -378558), f, r, d[n + 8], 11, -2022574463), m, f, d[n + 11], 16, 1839030562), i, m, d[n + 14], 23, -35309556), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 1], 4, -1530992060), f, r, d[n + 4], 11, 1272893353), m, f, d[n + 7], 16, -155497632), i, m, d[n + 10], 23, -1094730640), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 13], 4, 681279174), f, r, d[n + 0], 11, -358537222), m, f, d[n + 3], 16, -722521979), i, m, d[n + 6], 23, 76029189), r = md5_hh(r, i = md5_hh(i, m = md5_hh(m, f, r, i, d[n + 9], 4, -640364487), f, r, d[n + 12], 11, -421815835), m, f, d[n + 15], 16, 530742520), i, m, d[n + 2], 23, -995338651), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 0], 6, -198630844), f, r, d[n + 7], 10, 1126891415), m, f, d[n + 14], 15, -1416354905), i, m, d[n + 5], 21, -57434055), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 12], 6, 1700485571), f, r, d[n + 3], 10, -1894986606), m, f, d[n + 10], 15, -1051523), i, m, d[n + 1], 21, -2054922799), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 8], 6, 1873313359), f, r, d[n + 15], 10, -30611744), m, f, d[n + 6], 15, -1560198380), i, m, d[n + 13], 21, 1309151649), r = md5_ii(r, i = md5_ii(i, m = md5_ii(m, f, r, i, d[n + 4], 6, -145523070), f, r, d[n + 11], 10, -1120210379), m, f, d[n + 2], 15, 718787259), i, m, d[n + 9], 21, -343485551), m = safe_add(m, h), f = safe_add(f, t), r = safe_add(r, g), i = safe_add(i, e)
        }
        return Array(m, f, r, i)
    }

    function md5_cmn(d, _, m, f, r, i) {
        return safe_add(bit_rol(safe_add(safe_add(_, d), safe_add(f, i)), r), m)
    }

    function md5_ff(d, _, m, f, r, i, n) {
        return md5_cmn(_ & m | ~_ & f, d, _, r, i, n)
    }

    function md5_gg(d, _, m, f, r, i, n) {
        return md5_cmn(_ & f | m & ~f, d, _, r, i, n)
    }

    function md5_hh(d, _, m, f, r, i, n) {
        return md5_cmn(_ ^ m ^ f, d, _, r, i, n)
    }

    function md5_ii(d, _, m, f, r, i, n) {
        return md5_cmn(m ^ (_ | ~f), d, _, r, i, n)
    }

    function safe_add(d, _) {
        var m = (65535 & d) + (65535 & _);
        return (d >> 16) + (_ >> 16) + (m >> 16) << 16 | 65535 & m
    }

    function bit_rol(d, _) {
        return d << _ | d >>> 32 - _
    }

    let favQueryAddBtn = document.getElementById('fav-query__add');
    let topNavLikesCountSpan = document.getElementById('topNavLikesCount');
    let bookTitleInput = document.getElementById('bookSearchFormTitleTextField');
    let bookAuthorsInput = document.getElementById('bookSearchFormAuthorsTextField');
    let bookISBNInput = document.getElementById('bookSearchFormISBNTextField');
    let bookISBNPublisher = document.getElementById('publisherTextField');
    let searchSummaryBookCount = document.getElementById('searchSummaryBookCount');
    let allShopsHiddenInput = document.getElementById('s-param');
    let shopHiddenInputs = Array.from(document.querySelectorAll('.shop__filter__hidden__param'));

    const updateFavQueryAddBtnState = function () {
        if (favQueryAddBtn.dataset.saved === "1") {
            favQueryAddBtn.classList.remove("search-summary__button");
            favQueryAddBtn.classList.add("search-summary__button-active");
        } else {
            favQueryAddBtn.classList.remove("search-summary__button-active");
            favQueryAddBtn.classList.add("search-summary__button");
        }
    }

    const getFavQueriesCount = function () {

        let res = 0;
        let i = 0;

        while (i < localStorage.length) {
            if (localStorage.key(i).startsWith('fb_fq_')) res++;
            i++;
        }
        return res;
    }


    const getSelectedShopsArray = function () {

        if (allShopsHiddenInput.value==="1") return {};
        else {

            let selectedShopsArray = [];
            let selectedShop = {};

            shopHiddenInputs.forEach(hiddenInput => {

                if (!hiddenInput.disabled) {
                    selectedShop = {};
                    selectedShop.id = hiddenInput.id;
                    selectedShop.title = hiddenInput.dataset.shoptitle;

                    selectedShopsArray.push(selectedShop);
                }


            });

            return selectedShopsArray;
        }
    }

    const getQueryKey = function () {
        res = 'fb_fq_';

        let favQueryJSONForKey = {} // JSON для ключа

        favQueryJSONForKey.title = bookTitleInput.value;
        favQueryJSONForKey.author = bookAuthorsInput.value;
        favQueryJSONForKey.publisher = bookISBNPublisher.value;
        favQueryJSONForKey.isbn = bookISBNInput.value;
        favQueryJSONForKey.s = allShopsHiddenInput.value;
        favQueryJSONForKey.selected_shops=getSelectedShopsArray();

        return res + MD5(JSON.stringify(favQueryJSONForKey));


    }


    const testIfQueryIsInFavorites = function () {

        let queryKey = getQueryKey();
        return !!localStorage.getItem(queryKey)

    }

    const saveQueryInLocalStorage = function () {
        let favQueryKey = getQueryKey();
        let favQueryJSON = {};

        favQueryJSON.key = favQueryKey;
        favQueryJSON.dttm = Date.now();
        favQueryJSON.title = bookTitleInput.value;
        favQueryJSON.author = bookAuthorsInput.value;
        favQueryJSON.isbn = bookISBNInput.value;
        favQueryJSON.publisher = bookISBNPublisher.value;
        favQueryJSON.url = window.location.href.replace(/startidx=[0-9]+/i, 'startidx=0')
        favQueryJSON.s = allShopsHiddenInput.value;

        favQueryJSON.selected_shops = getSelectedShopsArray();

        if (searchSummaryBookCount)   favQueryJSON.book_count = Number(searchSummaryBookCount.textContent);
        else favQueryJSON.book_count = 0;

            localStorage.setItem(favQueryKey, JSON.stringify(favQueryJSON));
        favQueryAddBtn.dataset.saved = "1";
    }

    const favQueryBtnClick = function () {



        if (!testIfQueryIsInFavorites()) {
            //запрос не сохранен - добавляем
            saveQueryInLocalStorage();

        } else {
            //запрос сохранен - удаляем
            let favQueryKey = getQueryKey();
            localStorage.removeItem(favQueryKey);

            favQueryAddBtn.dataset.saved = "0";
        }

        // обновляем элементы на странице
        topNavLikesCountSpan.textContent = getFavQueriesCount().toString();
        updateFavQueryAddBtnState();
    }


   if (favQueryAddBtn) favQueryAddBtn.addEventListener('click', favQueryBtnClick)


    //если запрос сохранен выделить кнопку

    if (testIfQueryIsInFavorites()) favQueryAddBtn.dataset.saved = "1";
    if (favQueryAddBtn) updateFavQueryAddBtnState();




    let params = new URLSearchParams(document.location.search);
    let fqRefresh = params.get("fqrefresh");

    if (fqRefresh && testIfQueryIsInFavorites())  saveQueryInLocalStorage();



//    developing, delete before release



}());