DocumentOrganizer/src/store/reducers/files/getFilesReducer.js

import createReducer from "../../utils/createReducer";
import {
  FETCH_FILES_ERR,
  FETCH_FILES_SUCCESS,
} from "../../actions/files/fileActionConstants";

const initialState = {
  data: {},
  fetchFilesErrorMessage: "",
};

export default createReducer(
  {
    [FETCH_FILES_SUCCESS]: setFiles,
    [FETCH_FILES_ERR]: setFilesErrorMessage,
  },
  initialState
);

function setFiles(state, action) {
  return {
    ...state,
    data: action.payload,
  };
}

function setFilesErrorMessage(state, action) {
  return {
    ...state,
    fetchFilesErrorMessage: action.payload,
  };
}