import * as plugins from './smartnpm.plugins';
import { NpmRegistry } from './smartnpm.classes.npmregistry';

export class NpmPackage {
  public static async createFromFullMetadata(
    npmRegistryArg: NpmRegistry,
    fullMetadata: plugins.packageJson.FullMetadata
  ) {
    const npmPackage = new NpmPackage(npmRegistryArg);
    Object.assign(npmPackage, fullMetadata);
    return npmPackage;
  }

  // INSTANCE
  public name: string = null;
  public scope: string = null;
  public version: string = null;
  public description: string = null;
  public keywords: string[] = null;
  public date: string;
  public license: string;
  public links: {
    npm: string;
    homepage: string;
    repository: string;
    bugs: string;
  };
  public author: {
    name: 'Lossless GmbH';
  };
  public publisher: {
    username: 'gitzone';
    email: 'npm@git.zone';
  };
  public maintainers: any = null;
  public dist: {
    integrity: string;
    shasum: string;
    tarball: string;
  };
  public score: {
    final: number;
    detail: {
      quality: number;
      popularity: number;
      maintenance: number;
    };
  } = null;
  public searchScore: number = null;

  public npmRegistryRef: NpmRegistry;
  constructor(npmRegistryArg: NpmRegistry) {
    this.npmRegistryRef = npmRegistryArg;
  }

  /**
   * saves the package to disk
   */
  public async saveToDisk(targetDir: string) {
    const smartarchiveInstance = new plugins.smartarchive.SmartArchive();
    await smartarchiveInstance.extractArchiveFromUrlToFs(this.dist.tarball, targetDir);
  }

  /**
   * saves the package to memory
   */
  public async saveToMemory() {}

  /**
   * get file from package
   */
  public async getFileFromPackage(filePath: string): Promise<plugins.smartfile.Smartfile> {
    const done = plugins.smartpromise.defer<plugins.smartfile.Smartfile>();
    const smartarchiveInstance = new plugins.smartarchive.SmartArchive();
    const fileObservable = await smartarchiveInstance.extractArchiveFromUrlToObservable(
      this.dist.tarball
    );
    const wantedFilePath = plugins.path.join('package', filePath);
    const subscription = fileObservable.subscribe(
      (fileArg) => {
        if (fileArg.path === wantedFilePath) {
          done.resolve(fileArg);
          subscription.unsubscribe();
        }
      },
      (err) => {
        console.log(err);
      },
      () => {
        subscription.unsubscribe();
      }
    );
    return done.promise;
  }
}