angular.module('app')
    .controller('HomeController', ['$scope', '$state', 'DataShareBusiness', 'WeeksBusiness', '$mdDialog',
        function($scope, $state, DataShareBusiness, WeeksBusiness, $mdDialog) {

            $scope.DataShareBusiness = DataShareBusiness;
            $scope.dateFormat = "dd MMM yyyy";
            $scope.hourFormat = "HH:mm";
            $scope.courses = null;
            $scope.weekId = {
                id: null,
                date: null
            };
            $scope.days = [{day:"Monday", date: null}, {day:"Tuesday", date: null}, {day:"Wednesday", date: null},
                {day:"Thursday", date: null}, {day:"Friday", date: null}, {day:"Saturday", date: null},
                {day:"Sunday", date: null}];
            $scope.hours = [];

            $scope.selectedDate = new Date();
            $scope.selectedDate.setHours(0, 0, 0, 0);

            for (var i = 0; i < 48; ++i) {
                var d = new Date();
                d.setHours(i / 2, 30 * (i % 2), 0, 0);
                $scope.hours.push(d);
            }

            $scope.getSheetCount = function()
            {
                var sheetCount = function(group)
                {
                    var c = (group.Groups == null || group.Groups.length == 0) ? 1 : 0;
                    if (group.Groups != null) {
                        group.Groups.forEach(function (group) {
                            c += sheetCount(group);
                        });
                    }
                    return c;
                };
                return sheetCount(DataShareBusiness.getCurrentGroupOrRoot())
            };

            $scope.getMonday = function(d)
            {
                d = new Date(d);
                var day = d.getDay(), diff = d.getDate() - day + (day == 0 ? -6:1); // adjust when day is sunday
                d = new Date(d.setDate(diff));
                d.setHours(0, 0, 0, 0);
                return d;
            };

            $scope.setDates = function(monday)
            {
                $scope.days[0].date = new Date(monday);
                for (var i = 1; i < $scope.days.length; ++i) {
                    $scope.days[i].date = new Date(monday.setDate(monday.getDate() + 1));
                }
            };

            $scope.getDayListByDay = function(date)
            {
                if ($scope.courses == null || date == null) {
                    return null;
                }
                return $scope.courses.DayList.find(function(day)
                {
                    return day.DateTime.getTime() == date.getTime();
                });
            };

            $scope.getCoursesByDate = function(date)
            {
                var courses = $scope.getDayListByDay(date);
                if (courses == null) {
                    return [];
                }
                return courses.CourseList;
            };

            $scope.showCourse = function(course)
            {
                console.log(course);

                $mdDialog.show(
                    $mdDialog.alert()
                        .parent(angular.element(document.querySelector('#popupContainer')))
                        .clickOutsideToClose(true)
                        .title(course.Name)
                        .content("<a href=''>42</a>")
                        .ariaLabel(course.Name)
                        .ok('Ok')
                );
            };

            $scope.onWeekReceived = function(data)
            {
                $scope.courses = data;
                if ($scope.weekId.id == null) {
                    $scope.weekId.date = $scope.getMonday(new Date());
                    $scope.weekId.id = $scope.courses.Id;
                }
                $scope.setDates($scope.getMonday($scope.selectedDate));
            };

            $scope.loadWeeks = function()
            {
                var group = DataShareBusiness.getCurrentGroup();
                if (group != null && $scope.getSheetCount() < 5) {
                    var promiseLoadCourses = {
                        id: "promiseLoadCourses",
                        groups: ["coursesView"]
                    };
                    if ($scope.weekId.id == null) {
                        WeeksBusiness.getCurrentWeek({group_id: group.Id, type_id: group.Type}, promiseLoadCourses)
                            .then($scope.onWeekReceived);
                    }
                    else {
                        var diff = Math.round(($scope.getMonday($scope.selectedDate) - $scope.weekId.date) / 604800000);
                        var weekId = $scope.weekId.id + diff;
                        WeeksBusiness.getWeek({
                            group_id: group.Id,
                            type_id: group.Type,
                            week_id: weekId
                        }, promiseLoadCourses).then($scope.onWeekReceived);
                    }
                }
                else {
                    $scope.courses = null;
                }
            };

            $scope.weekDiff = function(date1, date2)
            {
                return Math.round(($scope.getMonday(date1) - $scope.getMonday(date2)) / 604800000)
            };

            $scope.$watch(function(){return DataShareBusiness.CurrentGroups}, $scope.loadWeeks);

            $scope.$watch(function(){return $scope.selectedDate}, function(newValue, oldValue)
            {
                if (oldValue == null || newValue == oldValue) {
                    return;
                }
                var diff = $scope.weekDiff($scope.selectedDate, oldValue);
                if (diff != 0) {
                    $scope.loadWeeks();
                }
            });
    }]);