import { AnyAction, combineReducers } from 'redux';
import { ForecastCalculations } from 'app/modules/forecast/store/forecast.types';
import { FORECAST } from './forecast.constants';

const defaultForecastDetailsState = {
  monthRate: 0,
  fixedRate: 0,
  unfixedRate: 0,
  fixedPercentage: 0,
  unfixedPercentage: 0,
};

const forecastDetailsReducer = (state = defaultForecastDetailsState, action: AnyAction = { type: '' }) => {
  switch (action.type) {
    case FORECAST.FORECAST_SET_DETAILS:
      return {
        ...state,
        ...action.payload,
      };

    default:
      return state;
  }
};

const forecastAggregationsReducer = (
  state: ForecastCalculations[] = [],
  action: AnyAction = { type: '' }
) => {
  switch (action.type) {
    case FORECAST.FORECAST_SET_AGGREGATIONS:
      return action.payload;

    default:
      return state;
  }
};

const forecastSelectedAggregationReducer = (state: number | null = null, action: AnyAction = { type: '' }) => {
  switch (action.type) {
    case FORECAST.FORECAST_SELECT_AGGREGATION:
      return action.payload;

    default:
      return state;
  }
};

const forecastReducer = combineReducers({
  details: forecastDetailsReducer,
  aggregations: forecastAggregationsReducer,
  selectedAggregation: forecastSelectedAggregationReducer,
});

export { forecastReducer };