import { Injectable } from '@angular/core';
import { DataSourceService } from './data-source.service';
import { FileOptions, FileOptionsClass } from '../model/files';

@Injectable({
  providedIn: 'root',
})
export class FilesService {
  private data: FileOptions[];
  // private loading = false;

  constructor(
    private dataSource: DataSourceService,
  ) {
    this.data = [];
    this.initData();
  }

  initData() {
    return new Promise((resolve, reject) => {
      this.dataSource.getAllFiles().subscribe( data => {
          if (this.data.length >= 0) {
            this.data.splice(0, this.data.length);
          }
          data.forEach(file => {
            this.data.push(new FileOptionsClass(file));
          });
          resolve(data);
        },
      );
    });
  }

  getAllFiles(): Promise<FileOptionsClass[]> {
    return new Promise(async (resolve, reject) => {
      // if (this.data.length === 0) {
      // }
      await this.initData();
      resolve(this.data);
    });
  }


}