(function () {
"use strict";

angular.module('shared')
    .provider('targetedResource', [
        function targetedResourceProvider() {
            var resourceCache = {};
            var resourceInfoByTranslation = {};
            return {
                "$get": ['$q', 'serverTargetedResource', '_', 'FeatureCheck', targetedResourceFactory],
                setResourceInfoByTranslation: setResourceInfoByTranslation
            };

            function targetedResourceFactory($q, serverTargetedResource, _, FeatureCheck) {
                var factory = this;
                factory.getResourceInfo = getResourceInfo;
                factory.getScienceMaterialResourceInfo = getScienceMaterialResourceInfo;
                factory.getResourceInfoByTranslation = getResourceInfoByTranslation;
                return factory;

                function getResourceInfoByTranslation() {
                    return resourceInfoByTranslation;
                }

                function getResourceInfo(action, resourceId, translationId, bookroomCollectionId, title) {
                    var key = action + '-' + resourceId + '-' + translationId;
                    if (resourceCache[key]) {
                        return $q.when(resourceCache[key]);
                    } else if (action == 'getAssessment') {
                        resourceCache[key] = getAssessment(resourceId, title);
                        return $q.when(resourceCache[key]);
                    } else {
                        return serverTargetedResource.getResourceInfo(action, resourceId, translationId)
                            .then(function (result) {
                                return resourceCache[key] =
                                    getTargetedResource(result, translationId, bookroomCollectionId, title, resourceId);
                            })
                    }
                }
                
                function getScienceMaterialResourceInfo(minimumMaterialId, unitId, materialTypeId, materialId, scienceCategoryId, languageId) {
                    var key = [minimumMaterialId, unitId, materialTypeId, materialId, scienceCategoryId, languageId].join('-');
                    if(resourceCache[key]) {
                        return $q.when(resourceCache[key]);
                    }
                    else {
                        return serverTargetedResource.getScienceMaterialResourceInfo(minimumMaterialId, unitId, materialTypeId, materialId, scienceCategoryId, languageId)
                            .then(function(result) {
                                return resourceCache[key] = getTargetedResources(result);
                            });
                    }
                }

                function getAssessment(resourceId, title) {
                    return {
                        resource_type: 'assessment',
                        resources: [{kids_book_id: resourceId}],
                        activities: [],
                        title: title
                    }
                }
                
                function getTargetedResources(result) {
                    var targetedResources = {};
                    Object.keys(result).forEach(function(key) {
                        targetedResources[key] = getTargetedResource({
                            key: result[key]
                        });
                    });
                    return targetedResources;
                }

                function getTargetedResource(serverTargetedResource, translationId, bookroomCollectionId, title, resourceId) {
                    var resourcesAndActivities = _.reduce(serverTargetedResource, function (memo, value, index) {
                        var resource = reduceResource(value, index);
                        memo.resources.push(resource);
                        memo.activities = _.union(memo.activities, resource.activities);
                        return memo;
                    }, {
                        resources: [],
                        activities: []
                    });
                    var targetedResource = {
                        resource_type: 'collection',
                        bookroom_collection_id: bookroomCollectionId,
                        translation_id: translationId,
                        resources: _.sortBy(resourcesAndActivities.resources, 'index')
                    };
                    if (title && title != "") {
                        targetedResource.title = title;
                    }
                    else if (targetedResource.resources.length == 1) {
                        targetedResource.title = targetedResource.resources[0].title;
                    }

                    targetedResource.activities = [
                        { activity_name: 'listen',             display_name: 'Listen',             activities: ['listen'] },
                        { activity_name: 'read',               display_name: 'Read',               activities: ['read'] },
                        { activity_name: 'quiz',               display_name: 'Quiz',               activities: ['quiz', 'formative_worksheet'] },
                        { activity_name: 'worksheet',          display_name: 'Interactivity',      activities: ['worksheet'] },
                        { activity_name: 'watch',              display_name: 'Watch',              activities: ['watch'] },
                        { activity_name: 'interactive_lesson', display_name: 'Interactive Lesson', activities: ['interactive_lesson'] },
                        { activity_name: 'interactive_component', display_name: 'Interactive Component', activities: ['interactive_component'] }
                    ].filter(function (activityObj) {
                        if (activityObj.activities.filter(function (activity) {
                            return _.contains(resourcesAndActivities.activities, activity);
                        }).length) {
                            return true;
                        }
                    });
                    if (resourceId !== undefined) {
                        targetedResource['resourceId'] = resourceId;
                    }
                    return targetedResource;

                    function reduceResource(resource, kids_book_id) {
                        resource.kids_book_id = kids_book_id;
                        if(resource.resource_deployment_ids) {
                            resource.activities = _.keys(resource.resource_deployment_ids);
                        }
                        else {
                            resource.activities = [];
                            if(resource.readResourceDeploymentId) {
                                resource.activities.push('read');
                            }
                            if(resource.listenResourceDeploymentId) {
                                resource.activities.push('listen');
                            }
                            if(resource.quizResourceDeploymentId) {
                                resource.activities.push('quiz');
                            }
                            if(resource.watchResourceDeploymentId) {
                                resource.activities.push('watch');
                            }
                            if(resource.interactiveLessonResourceDeploymentId) {
                                resource.activities.push('interactive_lesson');
                            }
                            if(resource.interactiveComponentResourceDeploymentId) {
                                resource.activities.push('interactive_component');
                            }
                        }
                        return resource;
                    }
                }
            }

            function setResourceInfoByTranslation(resources) {
                resourceInfoByTranslation = resources;
            }
        }]);
})();