import { StoreRouterConnectingModule } from '@ngrx/router-store';
import { StoreDevtoolsModule } from '@ngrx/store-devtools';
import { CommonService } from 'meng-common';
import { Injectable } from '@angular/core';
import { logger, storeStateGuard } from './util/meta-reducer-factory';
import { MetaReducer, StoreModule } from '@ngrx/store';

@Injectable({providedIn: 'root'})
export class NgrxConfigService {
  private environment;
  constructor(private service: CommonService) {
    this.environment = service.getEnv();
  }
  get StoreDevtools() {
    return !this.environment.production ? StoreDevtoolsModule.instrument({ maxAge: 50 }) : [];
  }
  get metaReducers(): MetaReducer<any>[] {
    return !this.environment.production ?
    [ logger, storeStateGuard, ] :
    [storeStateGuard];
  }
  get StoreModule(): any {
    // StoreConfig Interface: for varName is metaReducers
    // https://github.com/ngrx/platform/blob/6aa5645144e2b64664b32f09047c9149ee0691df/modules/store/src/store_module.ts
    const metaReducers = this.metaReducers;
    return StoreModule.forRoot({}, { metaReducers } );
  }

  get ImportArray() {
    return [
      this.StoreModule,
      StoreRouterConnectingModule.forRoot(),
      this.StoreDevtools,
    ];
  }
}