JS Module

var dataMediator = (function () {

    function getAllAtms() {
        return getJSON('../GetAtmsServlet');
    }
    function loadGmapsFile(url) {
        return getFile(url);
    }

    function getFile(serviceUrl) {

        var deferred = $.Deferred();

        $.ajax({
            url: serviceUrl,
            type: "GET",
            async: true,
            dataType: "script",
            success: function (data) {
                deferred.resolve(data);
            },
            error: function (data) {
                deferred.reject(this);
            }
        });

        return deferred.promise();
    }

    function getJSON(serviceUrl) {

        var deferred = $.Deferred();

        $.ajax({
            url: serviceUrl,
            type: "GET",
            async: true,
            contentType: "text/plain; charset=utf-8",
            success: function (data) {
                var items = JSON.parse(data);
                deferred.resolve(items);
            },
            error: function (data) {
                deferred.reject(this);
            }
        });

        return deferred.promise();
    }

    function postJSON(serviceUrl, data) {

        var deferred = $.Deferred();

        $.ajax({
            url: serviceUrl,
            type: "POST",
            async: true,
            data: data,
            success: function (data) {
                try {
                    var items = JSON.parse(data);
                    deferred.resolve(items);
                } catch (e) {
                    deferred.resolve(data);
                }
            },
            error: function (data) {
                deferred.reject(this);
            }
        });

        return deferred.promise();
    }


    return {
        getAllAtms: getAllAtms,
        loadGmapsFile : loadGmapsFile
    }
})();