dspace-angular/src/app/access-control/group-registry/group-registry.reducers.ts

import { Group } from '../../core/eperson/models/group.model';
import {
  GroupRegistryAction,
  GroupRegistryActionTypes,
  GroupRegistryEditGroupAction,
} from './group-registry.actions';

/**
 * The metadata registry state.
 * @interface GroupRegistryState
 */
export interface GroupRegistryState {
  editGroup: Group;
}

/**
 * The initial state.
 */
const initialState: GroupRegistryState = {
  editGroup: null,
};

/**
 * Reducer that handles GroupRegistryActions to modify Groups
 * @param state   The current GroupRegistryState
 * @param action  The GroupRegistryAction to perform on the state
 */
export function groupRegistryReducer(state = initialState, action: GroupRegistryAction): GroupRegistryState {

  switch (action.type) {

    case GroupRegistryActionTypes.EDIT_GROUP: {
      return Object.assign({}, state, {
        editGroup: (action as GroupRegistryEditGroupAction).group,
      });
    }

    case GroupRegistryActionTypes.CANCEL_EDIT_GROUP: {
      return Object.assign({}, state, {
        editGroup: null,
      });
    }

    default:
      return state;
  }
}