/**
 * A way to pass data from one page to another without involving the server.
 * @module jira/ajs/persistence
 * @example
 * require(['jira/ajs/persistence'], function(persistence) {
 *     persistence.nextPage("blurSearch", true);
 * });
 *
 * // Then on the following page you can get to this value
 * require(['jira/ajs/persistence'], function(persistence) {
 *     persistence.thisPage("blurSearch"); // true
 * });
 */
define('jira/ajs/persistence', ['jira/data/session-storage', 'jquery', 'exports'], function (sessionStorage, jQuery, exports) {
    var STORAGE_KEY = "AJS.thisPage";

    /**
     * Set a value for loading on the next page
     * @function
     * @param {String} name - a unique name of the value to store
     * @param {*} value
     */
    exports.nextPage = function () {

        var data = [];

        jQuery(window).unload(function () {
            try {
                sessionStorage.setItem(STORAGE_KEY, JSON.stringify(data));
            } catch (e) {}
        });

        return function (name, value) {

            var replaced;

            jQuery.each(data, function () {
                if (this.name === name) {
                    this.value = value;
                    replaced = true;
                }
            });

            if (!replaced) {
                data.push({
                    name: name,
                    value: value
                });
            }
        };
    }();

    /**
     * Retrieve data set for this page
     * @function
     * @param {String} name - the unique name of the value to retrieve
     * @returns {*} the value stored in the correct type
     */
    exports.thisPage = function () {
        var i;
        var value;
        var unformattedData;
        var data = {};

        unformattedData = sessionStorage.getItem(STORAGE_KEY);
        sessionStorage.removeItem(STORAGE_KEY);

        if (unformattedData) {
            unformattedData = JSON.parse(unformattedData);
            for (i = 0; i < unformattedData.length; i++) {
                data[unformattedData[i].name] = unformattedData[i].value;
            }
        }

        return function (name) {
            return data[name];
        };
    }();
});

(function (persistence) {
    AJS.namespace('AJS.nextPage', null, persistence.nextPage);
    AJS.namespace('AJS.thisPage', null, persistence.thisPage);
})(require('jira/ajs/persistence'));