/* ###  URL QUERY METHODS  ### */

    /* Get parameter value from URL */
    function getUrlParameter(sParam) {
        var sPageURL = decodeURIComponent(window.location.search.substring(1)),
            sURLVariables = sPageURL.split('&'),
            sParameterName,
            i;

        for (i = 0; i < sURLVariables.length; i++) {
            sParameterName = sURLVariables[i].split('=');

            if (sParameterName[0] === sParam) {
                return sParameterName[1] === undefined ? true : sParameterName[1];
            }
        }

        return "";
    };

    function hasQuery(queryItemName, queries) {
        // Remove preceeding questionmark
        if (queries.indexOf("?") === 0) {
            var queries = queries.substring(1).split("&");
        } else {
            var queries = queries.split("&");
        }

        if (typeof queries === "object" && queries.toString() !== "") {        
            var queryItems = {};
            for (var i = 0; i < queries.length; i++) {            
                var split = queries[i].split('=');
                queryItems[split[0].trim()] = (typeof split[1] !== "undefined") ? split[1].trim() : "";
            }

            if (queryItemName in queryItems) {
                return true;
            } else {
                return false;
            }
        }

        return false;
    }

    function getQueryValue(queryName, queries) {
        // Remove preceeding questionmark
        if (queries.indexOf("?") === 0) {
            var queries = queries.substring(1).split("&");
        } else {
            var queries = queries.split("&");
        }

        var queryItems = {};
        for (var i = 0; i < queries.length; i++) {
            var split = queries[i].split('=');
            if (typeof split[1] !== "undefined") {
                queryItems[split[0].trim()] = split[1].trim();
            } else {
                queryItems[queries[i]] = queries[i];
            }
        }

        if (queryName in queryItems) {
            return queryItems[queryName];
        } else {
            return "";
        }
    }

    function updateQueryValue(queryName, queryValue, queries) {
        var regQueryName = new RegExp("([?&])" + queryName + "=.*?(&|#|$)", "i");
        if (queryValue === undefined || queryValue === "") {
            if (queries.match(regQueryName)) {
                return removeQuery(queryName, queries);
            } else {
                return queries;
            }
        } else {
            if (queries.match(regQueryName)) {
                return queries.replace(regQueryName, '$1' + queryName + "=" + queryValue + '$2');
            } else {
                var hash =  '';
                if (queries.indexOf('#') !== -1) {
                    hash = queries.replace(/.*#/, '#');
                    queries = queries.replace(/#.*/, '');
                }
                var separator = queries.indexOf('?') !== -1 ? "&" : "?";    
                return queries + separator + queryName + "=" + queryValue + hash;
            }
        } 
    }

    function removeQuery(queryName, queries) {
        var rtn = queries.split("?")[0],
            param,
            params_arr = [],
            queryString = (queries.indexOf("?") !== -1) ? queries.split("?")[1] : queries;
        if (queryString !== "") {
            params_arr = queryString.split("&");
            for (var i = params_arr.length - 1; i >= 0; i -= 1) {
                param = params_arr[i].split("=")[0];
                if (param === queryName) {
                    params_arr.splice(i, 1);
                }
            }
            rtn = (queries.indexOf("?") !== -1) ? rtn + "?" + params_arr.join("&") : params_arr.join("&");
        }
        return rtn;
    }

/*  ### END URL QUERY METHODS  ### */



/*  ### VERSION LIST NAVIGATIONS  ### */

    
    function versionNavigate(navType, id) {
        switch(navType) {
            case "issues":
                var ajaxURL = "/jira/versionIssues.jsp?version=" + String(id);
                var currentPath = window.location.pathname + window.location.search;
                path = updateQueryValue("version", String(id), currentPath);
                var stateObj = { type: "issues", id: String(id) };
                break;
            case "versions":
                var ajaxURL = "/jira/versionList.jsp?project=" + String(id);
                var currentPath = window.location.pathname + window.location.search;
                var path = removeQuery("version", currentPath);
                path = updateQueryValue("project", String(id), path);
                var stateObj = { type: "versions", id: String(id) };
                break;
        }

        // Get content
        $.ajax({
            type: "POST",
            url: ajaxURL,
            data: ""
        }).done(function(html) {
            $("#jiraContent").html(html);
            history.pushState(stateObj, "", path);
        }).fail(function(resp) {
            console.log("Error retrieving content. Nothing to show, exiting!");
            console.log(resp);
        });
    }


/*  ### END VERSION LIST NAVIGATIONS  ### */