/**
 * External dependencies
 */
import { isEqual } from 'lodash';
import type { AnyAction } from '@nab/types';

/**
 * Internal dependencies
 */
import { INIT_STATE } from '../config';
import type { State as FullState } from '../types';
import type { SiteAction as Action } from '../actions/site-quota';

type State = FullState[ 'siteQuota' ];

export function siteQuota(
	state = INIT_STATE.siteQuota,
	action: AnyAction
): State {
	return actualReducer( state, action as Action ) ?? state;
}

function actualReducer( state: State, action: Action ): State {
	switch ( action.type ) {
		case 'RECEIVE_SITE_QUOTA':
			return isEqual( state, action.quota ) ? state : action.quota;
	}
}