(function() {
    "use strict";

    angular.module("raz")
        .component('lcmSequence', {
            templateUrl: '/js/angular/literacy-curriculum-map/components/lcm-sequence.html',
            controller: 'lcmSequenceController',
            bindings: {
                skillId: "<",
                gradeId: "<",
            }
        })
        .controller("lcmSequenceController", ['coreSkills', 'lcmObjectiveStandardsService', 'lcmStateSelectorService',
            'lcmGradeFolderIds', 'lcmGradeService',
            function (coreSkills, lcmObjectiveStandardsService, lcmStateSelectorService, lcmGradeFolderIds, lcmGradeService) {

            var ctrl = this;

            ctrl.coreSkillNames = coreSkills.CORE_SKILL_NAMES;

            ctrl.$onInit = function () {
                lcmGradeService.getLCMSSUnitsTreeById(lcmGradeFolderIds['grade_' + ctrl.gradeId]['folder_id'])
                    .then(function (response) {
                        ctrl.units = response['children'];
                        setUnitWeeks();
                    });

                ctrl.currentState = lcmStateSelectorService.getSelectedState();
                lcmStateSelectorService.onUpdate(stateSelectorHasChanged);
            };

            ctrl.getUnitWeeks = function (unit) {
                return ctrl.unitsWeeks[unit.id];
            };

            ctrl.getObjectiveStandards = function (coreSkillObjectiveMapId) {
                return lcmObjectiveStandardsService.getObjectiveStandards(coreSkillObjectiveMapId, ctrl.currentState.state_id);
            };

            ctrl.getObjectiveName = function (objective) {
                var name = objective['objective_name'];
                var target = objective['target_skill_text'];

                if (target) {
                    name += ': ' + target;
                }

                return name;
            };

            function stateSelectorHasChanged(newState) {
                ctrl.currentState = newState;
            }

            function setUnitWeeks() {
                ctrl.unitsWeeks = {};
                _.each(ctrl.units, function (unit) {
                    var unitId = unit.id;
                    _.each(unit.children, function (section) {
                        if (section.core_block_id === null) {
                            var objectivesForWeek = getObjectivesForWeek(section);
                            if (objectivesForWeek.length !== 0) {
                                var weekId = section.name;
                                if (!ctrl.unitsWeeks[unitId]) {
                                    ctrl.unitsWeeks[unitId] = {};
                                }
                                ctrl.unitsWeeks[unitId][weekId] = objectivesForWeek;
                            }
                        }
                    });
                });
            }

            function getObjectivesForWeek(unitWeek) {
                var objectivesForWeek = [];
                _.each(unitWeek.children, function (group) {
                    var blocks = group.children;
                    _.each(blocks, function (block) {
                        var skills = block.skill_objectives;
                        _.each(skills, function (skill) {
                            var coreSkillId = skill.core_skill_id;
                            if (coreSkillId == ctrl.skillId) {
                                var objectives = skill.objectives;
                                _.each(objectives, function (objective) {
                                    objectivesForWeek.push(objective);
                                });
                            }
                        });
                    });
                });
                return objectivesForWeek;
            }

        }]);
})();