import {
  GIFS_CLEAR_RESULTS,
  GIF_SET_SELECTED,
  GIF_CHANGE_SEARCH_TEXT,
  GIF_RESULTS_FETCH_REQUEST,
  GIF_RESULTS_FETCH_SUCCESS,
  GIF_RESULTS_FETCH_FAIL,
  GIF_CATEGORIES_FETCH_REQUEST,
  GIF_CATEGORIES_FETCH_SUCCESS,
  GIF_CATEGORIES_FETCH_FAIL
} from '../actions/tenor'
import { Map as ImmutableMap } from 'immutable'

const initialState = ImmutableMap({
  categories: [],
  results: [],
  chosenUrl: '',
  searchText: '',
  loading: false,
  error: false,
})

export default function (state = initialState, action) {
  switch (action.type) {
    case GIF_RESULTS_FETCH_REQUEST:
    case GIF_CATEGORIES_FETCH_REQUEST:
      return state.set('loading', true)
    case GIF_RESULTS_FETCH_SUCCESS:
      return state.withMutations(map => {
        map.set('results', action.results);
        map.set('error', false);
        map.set('loading', false);
      });
    case GIF_CATEGORIES_FETCH_SUCCESS:
      return state.withMutations(map => {
        map.set('categories', action.categories);
        map.set('error', false);
        map.set('loading', false);
      });
    case GIF_RESULTS_FETCH_FAIL:
    case GIF_CATEGORIES_FETCH_FAIL:
      return state.withMutations(map => {
        map.set('error', !!action.error);
        map.set('loading', false);
      });
    case GIFS_CLEAR_RESULTS:
      return state.set('results', [])
    case GIF_SET_SELECTED:
      return state.set('chosenUrl', action.url)
    case GIF_CHANGE_SEARCH_TEXT:
      return state.set('searchText', action.text.trim());
    default:
      return state
  }
}