angular-module-cleanup.js

import cloneDeep from 'lodash/cloneDeep';

import PayloadService from './payload.svc';
import StatsResource from '../resources/stats.rsc';
import DataTransformationService from '../../core-data-transformation/services/core-data-transformation.svc';

let $q, $timeout, statsResource, dataTransformationService;

const SUMMARY_RETRIEVAL_SERVICE_NAME = 'socialgrids.coreData.summaryRetrievalService';
class SummaryRetrievalService extends PayloadService {

    constructor(_$q, _$timeout, _statsResource, _dataTransformationService) {
        super();

        $q = _$q;
        $timeout = _$timeout;
        statsResource = _statsResource;
        dataTransformationService = _dataTransformationService;

        this.currentState = null;
    }

    getSummaryData(state, requestId) {
        if (!(hasStateChanged(state, currentState))) {
            return $q.when();
        }
        
        const payload = this.constructSummariesPayload(state, requestId);

        this.currentState = filterState(state);

        return loadSummaryAsync(state, requestId)
            .then((summaryDataResponse) => {
                if (summaryDataResponse.requestId !== requestId) {
                    return false;
                }

                const summaryData = summaryDataResponse.response.data;

                return dataTransformationService.transformData({ summaryData }, state.columns);
            });
    }
}

function filterState(state) {
    const clonedState = cloneDeep(state); 

    delete clonedState.paging;
    delete clonedState.sorting;

    clonedState.columns = clonedState.columns.map(column => column.id);

    return clonedState;
}

function hasStateChanged(state, currentState) {
    return !(_.isEqual(filterState(state), currentState));
}

function loadSummaryAsync(payload) {
    return statsResource.search(null, payload).$promise;
}

export default {
    name: SUMMARY_RETRIEVAL_SERVICE_NAME,
    main: [
        '$q',
        '$timeout',
        StatsResource.name,
        DataTransformationService.name,
        SummaryRetrievalService
    ]
};