import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { throwError } from 'rxjs';

import { ConfigService } from '@arrow/bom/config';
import { MessageBusService } from './message-bus/message-bus.service';
import { catchError } from 'rxjs/operators';

@Injectable()
export class UploadService {
  defaultErrorMessage = 'Server error';

  constructor(
    private http: HttpClient,
    private config: ConfigService,
    private _messageBus: MessageBusService
  ) {}

  uploadFile(file: any) {
    const form = new FormData();
    form.append('file', file, file.name);

    const headers = new HttpHeaders({ Accept: 'multipart/form-data' });
    const options = { headers: headers, withCredentials: true };
    //const url = `${this.config.apiUrl}/process`; //.Net Framework
    const url = `${this.config.apiCoreUrl}/api/ProcessedFile`; //.Net Core
    return this.http
      .post(
        url,
        form,
        options
      );
  }

  private handleError(error: any): any {
    this._messageBus.to('ch:loader', { payload: true });
    return throwError(error || this.defaultErrorMessage);
  }
}