filterProducts(currentFilters) {
        var products = this.productsFiltering;

        if (currentFilters.gradeArray.length > 0) {
            products = products.filter(p => currentFilters.gradeArray.indexOf(p.grade) > -1);
        }

        if (currentFilters.levelArray.length > 0) {
            products = products.filter(p => currentFilters.levelArray.indexOf(p.level) > -1);
        }

        if (currentFilters.genre !== "all") {
            products = products.filter(p => p.genreId === +currentFilters.genre);
        }

        if (currentFilters.subgenre !== "all") {
            products = products.filter(p => p.subGenreId === +currentFilters.subgenre);
        }

        if (currentFilters.set !== "all") {
            products = products.filter(p => p.setId === +currentFilters.set);
        }

        if (currentFilters.keyword !== "all") {
            products = products.filter(p => p.keywords.includes(currentFilters.keyword));
        }

        products = products.filter(p =>
            p.title != null && p.title.toLowerCase().includes(currentFilters.search) ||
            p.summary != null && p.summary.toLowerCase().includes(currentFilters.search) ||
            p.messages != null && p.messages.toLowerCase().includes(currentFilters.search) ||
            p.illustrator != null && p.illustrator.toLowerCase().includes(currentFilters.search) ||
            p.author != null && p.author.toLowerCase().includes(currentFilters.search) ||
            p.bookNumber != null && p.bookNumber.toLowerCase().includes(currentFilters.search) ||
            p.keywords.includes(currentFilters.search) ||
            p.genre != null && p.genre.name.toLowerCase().includes(currentFilters.search) ||
            p.subGenre != null && p.subGenre.name.toLowerCase().includes(currentFilters.search)
        );

        this.products = products;

        if (currentFilters.type === "grade") {

            this.filterLevels();
            this.filterSets();
            this.filterGenres();
            this.filterSubgenres();
            this.filterKeywords();
        }

        if (currentFilters.type === 'level') {

            this.filterGrades();
            this.filterSets();
            this.filterGenres();
            this.filterSubgenres();
            this.filterKeywords();
        }

        if (currentFilters.type === 'set') {

            this.filterGrades();
            this.filterLevels();
            this.filterGenres();
            this.filterSubgenres();
            this.filterKeywords();
        }

        if (currentFilters.type === 'genre') {

            this.filterGrades();
            this.filterLevels();
            this.filterSets();
            this.filterSubgenres();
            this.filterKeywords();
        }

        if (currentFilters.type === 'subGenre') {

            this.filterGrades();
            this.filterLevels();
            this.filterSets();
            this.filterGenres();
            this.filterKeywords();
        }

        if (currentFilters.type === 'keyword') {

            this.filterGrades();
            this.filterLevels();
            this.filterSets();
            this.filterGenres();
            this.filterSubgenres();
        }

        if (currentFilters.type === '') {

            this.filterGrades();
            this.filterLevels();
            this.filterSets();
            this.filterGenres();
            this.filterSubgenres();
            this.filterKeywords();
        }
        sessionStorage.setItem("filter", JSON.stringify(currentFilters));
    }