department-of-veterans-affairs/vets-website

import _ from 'lodash';
import {
  LOAD_SCHOOLS_FAILED,
  LOAD_SCHOOLS_STARTED,
  LOAD_SCHOOLS_SUCCEEDED,
  RESTORE_FROM_PREFILL_FAILED,
  RESTORE_FROM_PREFILL_STARTED,
  RESTORE_FROM_PREFILL_SUCCEEDED,
  SEARCH_CLEARED,
  SEARCH_INPUT_CHANGED,
  INSTITUTION_SELECTED,
  MANUAL_SCHOOL_ENTRY_TOGGLED,
} from '../actions/schoolSearch';

const initialState = {
  currentPageNumber: 1,
  institutions: [],
  institutionQuery: '',
  institutionSelected: {},
  manualSchoolEntryChecked: false,
  pagesCount: 0,
  searchInputValue: '',
  searchResultsCount: 0,
  showInstitutions: false,
  showInstitutionsLoading: false,
  showNoResultsFound: false,
  showPagination: false,
  showPaginationLoading: false,
  showSearchResults: true,
};

export default function schoolSearch(state = initialState, action) {
  switch (action.type) {
    case INSTITUTION_SELECTED: {
      const {
        address1,
        address2,
        address3,
        city,
        facilityCode,
        name,
        state: institutionState,
      } = action;

      return {
        ...state,
        institutionSelected: {
          address1,
          address2,
          address3,
          city,
          facilityCode,
          name,
          state: institutionState,
        },
      };
    }
    case RESTORE_FROM_PREFILL_FAILED:
    case LOAD_SCHOOLS_FAILED: {
      const currentPageNumber = 0;
      const institutionSelected = {};
      const { institutionQuery } = action;
      const institutions = [];
      const pagesCount = 0;
      const searchResultsCount = 0;
      const showInstitutions = false;
      const showInstitutionsLoading = false;
      const showNoResultsFound = true;
      const showPagination = false;
      const showPaginationLoading = false;

      return {
        ...state,
        currentPageNumber,
        institutionQuery,
        institutions,
        institutionSelected,
        pagesCount,
        searchResultsCount,
        showInstitutions,
        showInstitutionsLoading,
        showNoResultsFound,
        showPagination,
        showPaginationLoading,
      };
    }

    case RESTORE_FROM_PREFILL_STARTED: {
      const currentPageNumber = action.page ? action.page : 1;
      const { institutionQuery } = action;
      const institutions = [];
      const { institutionSelected } = action;
      const manualSchoolEntryChecked = false;
      const searchInputValue = action.institutionQuery;
      const searchResultsCount = 0;
      const showInstitutions = false;
      const showInstitutionsLoading = true;
      const showNoResultsFound = false;
      const showPagination = false;
      const showPaginationLoading = false;
      const showSearchResults = true;

      return {
        ...state,
        currentPageNumber,
        institutionQuery,
        institutions,
        institutionSelected,
        manualSchoolEntryChecked,
        searchInputValue,
        searchResultsCount,
        showInstitutions,
        showInstitutionsLoading,
        showNoResultsFound,
        showPagination,
        showPaginationLoading,
        showSearchResults,
      };
    }
    case LOAD_SCHOOLS_STARTED: {
      const currentPageNumber = action.page ? action.page : 1;
      const { institutionQuery } = action;
      const institutions = [];
      const institutionSelected = {};
      const manualSchoolEntryChecked = false;
      const searchResultsCount = action.page ? state.searchResultsCount : 0;
      const showInstitutions = false;
      const showInstitutionsLoading = !action.page;
      const showNoResultsFound = false;
      const showPagination = action.page ? action.page > 1 : false;
      const showPaginationLoading = !!action.page;
      const showSearchResults = true;

      return {
        ...state,
        currentPageNumber,
        institutionQuery,
        institutions,
        institutionSelected,
        manualSchoolEntryChecked,
        searchResultsCount,
        showInstitutions,
        showInstitutionsLoading,
        showNoResultsFound,
        showPagination,
        showPaginationLoading,
        showSearchResults,
      };
    }

    case RESTORE_FROM_PREFILL_SUCCEEDED:
    case LOAD_SCHOOLS_SUCCEEDED: {
      if (action.institutionQuery !== state.institutionQuery) {
        return state;
      }

      const { data = [], meta } = action.payload;

      const searchResultsCount = meta.count;

      const { institutionQuery } = action;
      const institutions = data
        .map(({ attributes }) => {
          // pull only necessary attributes from response
          const {
            address1,
            address2,
            address3,
            city,
            country,
            facilityCode,
            name,
            state: institutionState,
            zip,
          } = attributes;
          return {
            address1,
            address2,
            address3,
            city,
            country,
            facilityCode,
            name,
            state: institutionState,
            zip,
          };
        })
        .map(institution =>
          _.reduce(
            institution,
            (result, value, key) => {
              // transform null to empty string
              result[key] = value || ''; // eslint-disable-line no-param-reassign
              return result;
            },
            {},
          ),
        );
      const pagesCount = Math.ceil(searchResultsCount / 10);
      const showInstitutions = institutions.length > 0;
      const showInstitutionsLoading = false;
      const showNoResultsFound = institutions.length < 1;
      const showPagination = pagesCount > 1;
      const showPaginationLoading = false;

      return {
        ...state,
        institutionQuery,
        institutions,
        pagesCount,
        searchResultsCount,
        showInstitutions,
        showInstitutionsLoading,
        showNoResultsFound,
        showPagination,
        showPaginationLoading,
      };
    }

    case SEARCH_CLEARED: {
      return initialState;
    }

    case SEARCH_INPUT_CHANGED: {
      return {
        ...state,
        searchInputValue: action.searchInputValue,
      };
    }
    case MANUAL_SCHOOL_ENTRY_TOGGLED: {
      return {
        ...state,
        manualSchoolEntryChecked: action.manualSchoolEntryChecked,
      };
    }

    default:
      return state;
  }
}