// angular modules
import { NgModule, APP_INITIALIZER, ModuleWithProviders, Injector,Optional,SkipSelf } from '@angular/core';
import { CommonModule, DatePipe } from '@angular/common';
import { HttpClientModule, HttpClient, HTTP_INTERCEPTORS } from '@angular/common/http';
import { FormsModule } from '@angular/forms';

// external modules
import { OAuthModule,AuthConfig, OAuthService, OAuthStorage } from 'angular-oauth2-oidc';


// routing module
import { AppCommonRoutingModule } from './common-routing.module';

import { MODULE_NAME }  from './module-name';

//components
import { ItemTypeService } from './services/itemtype.service';
import { FolderService } from './services/folder.service';
import { TimespanService} from './services/timespan.service';
import { ItemService} from './services/item.service';
import { EventService } from './services/event.service';
import { TypeaheadService } from './services/typeahead.service';
import { UserService } from './services/user.service';
import { AppConfig } from './shared/app.config';
import { AccessTokenInterceptor } from "./shared/accesstoken.interceptor";
import { appConfigFactory } from "./shared/app.config.factory";
import { AuthGuard } from './services/auth-guard.service';
import { NavBarGuard } from './services/nav-bar-guard.service';
import { FullScreenGuard } from './services/full-screen-guard.service';
import { SafePipe } from './shared/safe.pipe';
import { AppComponent} from './components/app/app.component';
import { AuthCallbackComponent } from './components/auth-callback/auth-callback.component';
import { AuthCallbackGuard } from './components/auth-callback/auth-callback.guard';
import { SessionClearedComponent } from './components/session-cleared/session-cleared.component';
import { ResumableFileUploadService } from './components/resumable-file-upload/resumable-file-upload.service';
import { ResumableFileUploadComponent } from './components/resumable-file-upload/resumable-file-upload.component';
import { NotFoundComponent } from './components/not-found/not-found.component';
import { NotImplementedComponent } from './components/not-implemented/not-implemented.component';
import { SidePanelComponent } from './components/side-panel/side-panel.component';
import { TimespanComponent } from './components/timespan/timespan.component';
import { TagInputComponent } from './components/tag-input/tag-input.component';
import {IEventMessage } from './models/event.message';
import { IItem, Item } from './models/item';
import {IItemType} from './models/item.type';
import {IItemTypes} from './models/item.types';
import {IItemTask,ItemTask} from './models/itemTask';
import {IListItem} from './models/list.item';
import {ITypeaheadItem} from './models/typeahead.item';
import {IUser} from './models/user';
import * as commonActions from './actions/app-common.actions';
import * as commonReducers from './reducers/app-common.reducer';
import * as commonEffects from './effects/app-common.effects';
import {NgbDateNativeAdapter} from './services/date-adapter.service'
import { from } from 'rxjs';

export {FolderService,
  ItemTypeService,
  TimespanService,
  ItemService,
  EventService,
  TypeaheadService,
  UserService,
  AppConfig,
  AccessTokenInterceptor,
  AuthGuard,
  NavBarGuard,
  FullScreenGuard,
  AuthCallbackGuard,
  ResumableFileUploadService,
  NgbDateNativeAdapter
};

@NgModule({
  imports: [
    OAuthModule.forRoot(),
  ]
})
export class AppCommonServiceModule {
  constructor (@Optional() @SkipSelf() parentModule: AppCommonServiceModule) {
    if (parentModule) {
      throw new Error(
        'AppCommonServiceModule is already loaded. Import it in the AppModule only');
    }
  }
  static forRoot(): ModuleWithProviders {
    return {
      ngModule: AppCommonServiceModule,
      providers: [
        AppConfig,
        {
          provide: APP_INITIALIZER,
          useFactory: appConfigFactory,
          deps: [Injector, AppConfig, OAuthService],
          multi: true
        },       
        {
          provide: HTTP_INTERCEPTORS,
          useClass: AccessTokenInterceptor,
          multi: true
        },
        DatePipe
      ]
    };
  }
}