(Linkedin = {
        data: {},
        config: {
            inspectorSpeed: 2000,
            sendSpeed: 3000,
            pagerSpeed: 10000,
            scrollDownAuto: 500, 
            debug: true,
            message: 'Your custom note message (max 300 length)'
        },
        setEvents: function () {
            this.debug('set events');
        },
        debug: function (a) {
            if (this.config.debug && typeof console === 'object') {
                console.log(a)
            }
        },
        init: function () {
            this.debug('start script');
            this.setDefaults();
            this.setEvents();
            this.inspect();
        },
        complete: function () {
            this.debug('script complete');
        },
        sleep: function (a) {
            this.setScroll();
            var start = new Date().getTime();
            for (var i = 0; i < 1e7; i++) {
                if ((new Date().getTime() - start) > a) {
                    break;
                }
            }
        },
        totalRows: function () {
            return $('.search-result').length;
        },
        compile: function () {
            this.data.pageButtons = $("button.search-result__action-button").filter(function () {
                return $.trim($(this).text()) === "Connect";
            });
            this.data.pageButtonTotal = this.data.pageButtons.length;
        },
        stop: function(){
            clearInterval(Linkedin.data.pageInterval);
            clearInterval(Linkedin.data.nextInterval);
        },
        setDefaults: function () {
            clearInterval(Linkedin.data.pageInterval);
            clearInterval(Linkedin.data.nextInterval);
            this.data = {
                pageInterval: null,
                nextInterval: null,
                pageButtons: {},
                pageButtonIndex: 0,
                pageButtonTotal: 0
            };
        },
        sendInvites: function () {

            this.compile();
            this.setScroll();
            this.debug('validing');

            if (this.data.pageButtonTotal === 0) {

                this.sleep(this.config.sendSpeed);

                return this.nextPage();
            }

            this.sleep(this.data.speed);

            this.debug('sending invite ' + (this.data.pageButtonIndex + 1) + '/' + this.data.pageButtonTotal);

            var button = this.data.pageButtons[this.data.pageButtonIndex];

            this.debug('clicking connect');
            $(button).click();
            this.sleep(Linkedin.config.sendSpeed);

            this.debug('adding a note');
            $("button:contains('Add a note')").click();
            this.sleep(Linkedin.config.sendSpeed);

            this.debug('write a note');
            var textArea = $('textarea[id="custom-message"]');
            textArea.val(this.config.message);
            this.sleep(Linkedin.config.sendSpeed);

            this.debug('send click');
            $("button:contains('Send invitation')").click();
            this.sleep(Linkedin.config.sendSpeed);

            this.debug('close window');
            $("button:contains('Cancel')").click();
            this.sleep(Linkedin.config.sendSpeed);

            if (this.data.pageButtonIndex >= (this.data.pageButtonTotal - 1)) {
                return this.nextPage();
            } else {
                this.data.pageButtonIndex++;
                return this.sendInvites();
            }
        },
        nextPage: function () {
            Linkedin.debug('find page');
            Linkedin.setScroll();
            Linkedin.data.nextInterval = setInterval(function () {
                var pagerButton = $('.artdeco-pagination__button.artdeco-pagination__button--next[id^=ember]');
                Linkedin.debug('check page link');
                if (pagerButton.length === 0) {
                    return false;
                }
                clearInterval(Linkedin.data.nextInterval);
                pagerButton.trigger('click');
                Linkedin.setDefaults();
                Linkedin.debug('call next page');
                Linkedin.checkRequest();
            }, Linkedin.config.pagerSpeed);
        },
        checkRequest: function () {
            $(document).ajaxComplete(function () {
                Linkedin.debug('ready');
                Linkedin.resetRequest();
                Linkedin.inspect();
            });
        },
        resetRequest: function () {
            this.debug('reset request');
            $(document).ajaxComplete(function () {
                Linkedin.debug('default request called');
             });
        },
        setScroll: function (a) {
            $('body').click();
            window.scrollTo(0, $(window).scrollTop() + ((a) ? a : Linkedin.config.scrollDownAuto));
        },
        inspect: function () {
            this.debug('inspect elements');
            this.data.pageInterval = setInterval(function () {
                Linkedin.setScroll(Linkedin.config.scrollDownAuto);
                if (Linkedin.totalRows() >= 20) {
                    clearInterval(Linkedin.data.pageInterval);
                    Linkedin.sendInvites();
                } else {
                    Linkedin.debug('listening..');
                }
            }, Linkedin.config.inspectorSpeed);
        }
    }).init();