(function()
{
    angular.module('appSdk')
        .factory('DataShareBusiness', ['$location', function ($location) {

            var data = {
                Groups: null,

                SearchSeparator: "~",

                CurrentGroups: [],

                setCurrentGroup: function(group)
                {
                    data.CurrentGroups = [];
                    while (group != null) {
                        data.CurrentGroups.push(group);
                        group = group.Parent;
                    }
                    data.CurrentGroups.reverse();

                    $location.search(data.getSearchString(-1));
                },

                getCurrentGroup: function()
                {
                    if (data.CurrentGroups.length == 0) {
                        return null;
                    }
                    return data.CurrentGroups[data.CurrentGroups.length - 1];
                },

                getSearchString: function(group)
                {
                    if (group == -1 && data.CurrentGroups.length != 0) {
                        group = data.CurrentGroups[data.CurrentGroups.length - 1];
                    }
                    if (group == null) {
                        return "";
                    }
                    var search = [];
                    while (group != null){
                        search.push(group.Name);
                        group = group.Parent;
                    }
                    return search.reverse().join(data.SearchSeparator);
                },

                getGroupUrl: function(group)
                {
                    var search = data.getSearchString(group);
                    return "#" + $location.path() + $location.hash() + "?" + search;
                },

                setFromSearchString: function(string)
                {
                    if (string == null) {
                        data.setCurrentGroup(null);
                        return;
                    }
                    var group = {Groups: data.Groups};
                    var names = string.split(data.SearchSeparator);
                    names.forEach(function(name)
                    {
                        var g = group.Groups.find(function(g)
                        {
                            return g.Name == name;
                        });
                        if (g != null) {
                            group = g;
                        }
                    });
                    data.setCurrentGroup(group);
                },

                upCurrentGroup: function()
                {
                    if (data.CurrentGroups.length > 1) {
                        data.setCurrentGroup(data.CurrentGroups[data.CurrentGroups.length - 2]);
                    }
                    else if (data.CurrentGroups.length == 1) {
                        data.setCurrentGroup(null);
                    }
                }
            };

            return data;
        }]);
})();