import { Middleware } from 'redux';
import { ReducerRegistry } from '@redhat-cloud-services/frontend-components-utilities/ReducerRegistry/index';
import promiseMiddleware from 'redux-promise-middleware';
import { notifications } from '@redhat-cloud-services/frontend-components-notifications';

let registry: any;

export const restoreStore = () => {
    registry = undefined;
};

export const initStore = <State, Reducer extends Record<string, any>>(initialState?: State, reducer?: Reducer, ...middleware: Middleware[]) => {
    if (registry) {
        throw new Error('store already initialized');
    }

    registry = new ReducerRegistry(initialState ?? {}, [
        promiseMiddleware,
        ...middleware
    ]);

    if (reducer && Object.keys(reducer).includes('notifications')) {
        throw new Error('Invalid reducer with `notifications` key. This key is reserved for frontend-components-notifications');
    }

    registry.register({
        notifications,
        ...(reducer ?? {})
    });

    return registry;
};

export const getStore = () => {
    return registry.getStore();
};