// Set the Olark chatbox to appear inline
olark.configure('box.inline', true);

// Keep things from polluting the global namespace, except changeClass, which we want accessible
var changeClass;

(function (d, olk) {
    // These functions are helpers for the below
    function getOlarkWrapper() {
        return d.getElementById("olark-box-wrapper");
    }

    function setOlarkVisible(olark_wrapper) {
        olark_wrapper.className = "chatbox-open";
    }

    function setOlarkHidden(olark_wrapper) {
        olark_wrapper.className = "chatbox-closed";
    }

    function olarkIsVisible(olark_wrapper) {
        return olark_wrapper.className.match(/(?:^|\s)chatbox-open(?!\S)/);
    }

    // This is used by the link to show/hide the inline page element
    changeClass = function() {
        var olark_wrapper = getOlarkWrapper();
        // Get the HTML object containing the Olark chat box
        // If the chat box is already open, close id
        if (olarkIsVisible(olark_wrapper)) {
            setOlarkHidden(olark_wrapper);
        } else {
            setOlarkVisible(olark_wrapper);
        }
    }

    // This is used to cause the box to auto-open if a visitor is already in conversation
    olk('api.visitor.getDetails', function (details) {
        if (details.isConversing) {
            setOlarkVisible(getOlarkWrapper());
        }
    });
}(document, olark));