(function() {
    "use strict";

    angular.module("raz")
        .service("correlationTierResourcesService", ["$q", "correlationApiService", "resourceTypes",
            function ($q, correlationApiService, resourceTypes) {

                var tierResourcesCache = {};
                var typeOrder = [resourceTypes.TYPE_NONFICTION_BOOKS_ID, resourceTypes.TYPE_FOCUS_BOOKS_ID, resourceTypes.TYPE_PBL_ID,
                    resourceTypes.TYPE_INTERACTIVE_LESSON_ID, resourceTypes.TYPE_INTERACTIVE_COMPONENT_ID,
                    resourceTypes.TYPE_PROCESS_ACTIVITIES_ID, resourceTypes.TYPE_INVESTIGATION_PACK_ID, resourceTypes.TYPE_SCIENCE_IN_THE_NEWS_ID,
                    resourceTypes.TYPE_VIDEO_ID, resourceTypes.TYPE_QUICK_READS_ID, resourceTypes.TYPE_SCIENCE_DIAGRAMS_ID, resourceTypes.TYPE_GAME_PACK_ID,
                    resourceTypes.TYPE_I_FILE_ID, resourceTypes.TYPE_MYSTERY_FILE, resourceTypes.TYPE_CAREER_FILES_ID, resourceTypes.TYPE_CONCEPT_BOOKS_ID, resourceTypes.TYPE_DEBATE_ID,
                    resourceTypes.TYPE_ACTIVITY_SHEET, resourceTypes.TYPE_IMAGE_CARDS];

                function getTierResources(tier) {
                    if (!tier) {
                        return [];
                    }
                    var tierId = tier.correlation_tier_id;
                    //if (!tierResourcesCache[tierId]) {
                    //    tierResourcesCache[tierId] = {};
                    //}

                    if (tierResourcesCache[tierId]) {
                        var deferred = $q.defer();
                        deferred.resolve(tierResourcesCache[tierId]['tierResources']);
                        return deferred.promise;
                    } else {
                        tierResourcesCache[tierId] = {
                            tierResources: []
                        };
                        return correlationApiService.getTierResources(tierId)
                            .then(function (data) {
                                //reduceResourcesInTier(data, gradeId, tierId);
                                tierResourcesCache[tierId]['tierResources'] = data;
                                return tierResourcesCache[tierId]['tierResources'];
                            })
                            .catch(function (error) {
                                console.log(error);
                            });
                    }
                }

                //function reduceResourcesInTier(resources, gradeId, tierId) {
                //    typeOrder.forEach(function (resourceType, index) {
                //        if (resources[resourceType]) {
                //            Object.keys(resources[resourceType]).forEach(function (materialKey) {
                //                var material = resources[resourceType][materialKey];
                //                var materialId = material.material_id;
                //                var lessonId = material.lesson_id;
                //
                //                if (!tierResourcesCache[gradeId][tierId][resourceType]) {
                //                    tierResourcesCache[gradeId][tierId][resourceType] = [];
                //                }
                //                if (materialId && (tierResourcesCache[gradeId][tierId][resourceType].indexOf(materialId) === -1)) {
                //                    tierResourcesCache[gradeId][tierId][resourceType].push(materialId);
                //                    tierResourcesCache[gradeId][tierId].TierResources.push(material);
                //                } else if (lessonId && (tierResourcesCache[gradeId][tierId][resourceType].indexOf(lessonId) === -1)) {
                //                    tierResourcesCache[gradeId][tierId][resourceType].push(lessonId);
                //                    tierResourcesCache[gradeId][tierId].TierResources.push(material);
                //                }
                //            });
                //        }
                //    });
                //}

                return {
                    getTierResources: getTierResources
                };

            }]);
})();