<script async src="https://www.googletagmanager.com/gtag/js?id=UA-111883079-21"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());
  gtag('config', 'UA-111883079-21');
</script>

<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','<?php echo $tracking_gm; ?>');</script>


<!-- DATA LAYER -->
<script>
$(document).ready(function(){
<?php

    // Data Firing Class
    class Analytics {

        public static function fireData($type, $upsell = null, $price = null, $product = null) {

            switch($type) {
                case 'vsl-atc':
                    //fire on any 3 order now buttons on vsl
                    //$Analytics->fireData('vsl-atc');
                    ?>
                        dataLayer.push({
                        'event': 'gtm-event',
                        'cat': 'Front End',
                        'act': 'Add to cart',
                        'lab': '<?php echo $product; ?>'
                        });
                        // Facebook
                        //fbq('track', 'InitiateCheckout');
                        alert("DataLayer Fire: VSL-ADD2CART (<?php echo $product; ?>)");
                    <?
                    break;
                case 'u-purchase':
                    //fire only if user purchases the upsell
                    //$Analytics->fireData('u-purchase', $price, $product);
                    ?>
                        dataLayer.push({
                            'event': 'gtm-event',
                            'cat': 'Purchase',
                            'act': 'Upsell <? echo $upsell[1]; ?> Purchase',
                            'lab': '<? echo $product; ?>', //product is a dynamic variable i.e. 1-bottle, 3-bottles, etc.
                            'value': '<? echo $price; ?>' //price is dynamic based on the price of the purchase on upsell page
                        });
                        /*
                        fbq('track', 'Purchase', {
                            value: '<? echo $price; ?>',
                            currency: 'USD',
                            content_ids: '<? echo $product; ?>',
                            content_type: 'product',
                        });
                        */
                        //alert("DataLayer Fire: Purchase Button Pressed - Price: <?php echo $price; ?> - Product: <?php echo $product; ?> - Upsell <? echo $upsell[1]; ?> Purchase");
                    <?
                    break;
                case 'u1-success':
                    //fire only when landing on upsell 1 after successful purchase and only fire on first visit
                    //$Analytics->fireData('u1-success', $price, $product);
                    ?>
                        dataLayer.push({
                        'event': 'gtm-event',
                        'cat': 'Purchase',
                        'act': 'First Purchase',
                        'value': '<? echo $price; ?>'
                        });
                        //alert("DataLayer Fire: Upsell 1 First Visit + Total Set ($<?php echo $price; ?>)");
                    <?
                    break;
            }


        }
    }

    // Initialize
    $Analytics = new Analytics();

    // Nice Utility Function for Upsell # Detection
    function getStringBetween($str,$from,$to)
    {
        $sub = substr($str, strpos($str,$from)+strlen($from),strlen($str));
        return substr($sub,0,strpos($sub,$to));
    }

    // Get URL
    $pageUrl = $_SERVER['REQUEST_URI'];

    // Upsell Or Downsell
    if(!preg_match('/(d1-)/', $pageUrl)) {
        // Get Upsell #
        $upsell_number = getStringBetween($pageUrl, '/u', '-');
    } else {
        $downsell_number = getStringBetween($pageUrl, '/d', '-'); // Usually will be 1, but incase this changes...
    }

    // Vsl Page Check
    if(!preg_match('/(d1-|u0-|u1-|u2-|u3-)/', $pageUrl)) {

        // Is VSL
        ?>
            // All CTA Buttons
            $(".orderbutton-1").click(function(){
                <?php
                $Analytics->fireData('vsl-cta', '', '', $pc_main_1);
                ?>
            });
            $(".orderbutton-3").click(function(){
                <?php
                $Analytics->fireData('vsl-cta', '', '', $pc_main_3);
                ?>
            });
            $(".orderbutton-6").click(function(){
                <?php
                $Analytics->fireData('vsl-cta', '', '', $pc_main_6);
                ?>
            });


        <?php

    } else {

        // Is Upsell/Downsell
        if(!$downsell_number){

            // Upsell
            // Check If its 3 Buttons or 2 Buttons.
            if(${"upsell" . $upsell_number . "c_price"}){
                // 3 Buttons
                ?>
                $('.orderbutton-1').click(function(){
                    <?php
                    $Analytics->fireData('u-purchase', "u" . $upsell_number, ${"upsell" . $upsell_number . "a_price"}, ${"pc_u" . $upsell_number . "_1"});
                    ?>
                });
                $('.orderbutton-3').click(function(){
                    <?php
                    $Analytics->fireData('u-purchase', "u" . $upsell_number, ${"upsell" . $upsell_number . "b_price"}, ${"pc_u" . $upsell_number . "_3"});
                    ?>
                });
                $('.orderbutton-6').click(function(){
                    <?php
                    $Analytics->fireData('u-purchase', "u" . $upsell_number, ${"upsell" . $upsell_number . "c_price"}, ${"pc_u" . $upsell_number . "_6"});
                    ?>
                });
                <?
            } elseif(${"upsell" . $upsell_number . "a_price"} && ${"upsell" . $upsell_number . "b_price"}) {
                // 2 Buttons.
                ?>
                $('.orderbutton-3').click(function(){
                    <?php
                    $Analytics->fireData('u-purchase', "u" . $upsell_number, ${"upsell" . $upsell_number . "a_price"}, ${"pc_u" . $upsell_number . "_3"});
                    ?>
                });
                $('.orderbutton-6').click(function(){
                    <?php
                    $Analytics->fireData('u-purchase', "u" . $upsell_number, ${"upsell" . $upsell_number . "b_price"}, ${"pc_u" . $upsell_number . "_6"});
                    ?>
                });
                <?
            } else {
                // 1 Button
                ?>
                // It doesn't, single button.
                $(".order-button").click(function(){
                    <?php
                        $Analytics->fireData('u-purchase', "u" . $upsell_number, ${"upsell" . $upsell_number . "_price"}, ${"purchase_codes_u" . $upsell_number});
                    ?>
                });
                <?
            }
        } else {
            // Downsell
            ?>
            $(".orderbutton").click(function(){
                <?php
                    $Analytics->fireData('u-purchase', "d" . $downsell_number, ${"downsell" . $downsell_number . "_price"}, ${"purchase_codes_d" . $downsell_number});
                ?>
            });
            <?
        }
    }

    // Upsell 1 Initial Fire.
    if(preg_match('/(u1-)/', $pageUrl)) {

        //fire only when landing on upsell 1 after successful purchase and only fire on first visit
        if(!isset($_COOKIE[$productDir . '_u1']) && isset($_REQUEST['total'])){

            // Set Cookie Script
            ?>
                // Set Upsell 1 Cookie
                function setCookie(cname, cvalue, exdays) {
                    var d = new Date();
                    d.setTime(d.getTime() + (exdays*24*60*60*1000));
                    var expires = "expires="+ d.toUTCString();
                    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
                }
                setTimeout(setCookie('<?php echo $productDir . '_u1'; ?>','set',30),1000);
            <?

            // Datalayer Fire.
            $Analytics->fireData('u1-success', $price, $_REQUEST['total']);
        }
    }

?>
});
</script>