(function ( w, d, $ ) {

    var css_class = {};
    var plugin = {};

    // cross browser way to add an event listener
    function addListener(event, obj, fn) {

        if (obj.addEventListener) {
            obj.addEventListener(event, fn, false);   // modern browsers
        } else {
            obj.attachEvent("on"+event, fn);          // older versions of IE
        }

    }

    function daadb_get_data() {

        $.ajax( {
            url: daau_app.this_url,
            type: 'POST',
            dataType: 'JSON',
            cache: false,
            data: {
                action: 'get_daau_settings',
                nonce: daau_app.nonces.get_plugin_data
            },
            success: function( data ) {
                initCss( data );
                createHtmlElements( data );
                initEvents( data);
                setModalContent( data );
                setModalStyle( data );
                buildModal( data );
                showModal();
                setTimer( data );
            },
            error: function( jqXHR, textStatus, errorThrown ) {
                console.log( ' Error: ' + textStatus );
            }
        } );

    }

    function initCss( data ) {

        css_class.wrapper   = data['adunblocker-file-name'] + '-wrapper';
        css_class.container = data['adunblocker-file-name'] + '-container';
        css_class.blanket   = data['adunblocker-file-name'] + '-blanket';
        css_class.scroll    = data['adunblocker-file-name'] + '-disable-scroll';

    }

    function createHtmlElements( data ) {

        plugin.blanket      = d.createElement("div");
        plugin.wrapper      = d.createElement("div");
        plugin.container    = d.createElement("div");
        plugin.h2           = d.createElement("h2");
        plugin.p            = d.createElement("p");

        if(data['adunblocker-type'] == 'dismissible') {

            plugin.close_button             = d.createElement("button");
            plugin.close_button.classList   = "dashicons dashicons-no-alt";

        }

    }

    function setModalStyle( data ) {

        plugin.blanket.id                   = css_class.blanket;
        plugin.blanket.style.background     = convertHex(data['adunblocker-overlay-color'], 95);
        plugin.h2.style.color               = data['adunblocker-title-color'];
        plugin.p.style.color                = data['adunblocker-text-color'];
        plugin.container.style.background   = data['adunblocker-bg-color'];

    }

    function setModalContent( data ) {

        plugin.h2.innerHTML     = data['adunblocker-title'];
        plugin.p.innerHTML      = data['adunblocker-content'];

    }

    function buildModal( data ) {

        plugin.container.appendChild(plugin.h2);
        plugin.container.appendChild(plugin.p);
        plugin.wrapper.appendChild(plugin.container);
        plugin.blanket.appendChild(plugin.wrapper);

        if(data['adunblocker-type'] == 'dismissible') {
            plugin.container.appendChild(plugin.close_button);
        }

    }

    function initEvents( data ) {

        if(data['adunblocker-type'] == 'dismissible') {
            addListener('click', plugin.close_button, close);
        }

    }

    function showModal() {

        d.body.appendChild(plugin.blanket);

        setTimeout(function() {
            d.body.className += ' ' + css_class.scroll;
        }, 1000);

    }

    function setTimer( data ) {

        if(data['adunblocker-type'] == 'temp') {

            var delay = data['adunblocker-delay'];
            setTimeout( close(), delay )

        }

    }

    function close() {
        d.body.classList.remove( css_class.scroll );
    }

    function convertHex( hex, opacity ){

        hex = hex.replace('#', '');
        r = parseInt(hex.substring(0,2), 16);
        g = parseInt(hex.substring(2,4), 16);
        b = parseInt(hex.substring(4,6), 16);

        result = 'rgba(' + r + ',' + g + ',' + b + ',' + opacity / 100 +')';

        return result;

    }

    function run() {

        if ( typeof adsbygoogle === "undefined" ) {
            daadb_get_data();
        } else if( !adsbygoogle.loaded ) {
            daadb_get_data();
        }

    }

    addListener( 'load', w, run );

})( window, document, jQuery );