import { Smartfile } from './smartfile.classes.smartfile.js';
import * as plugins from './smartfile.plugins.js';
import * as fs from './smartfile.fs.js';

/**
 * a virtual directory exposes a fs api
 */
export class VirtualDirectory {
  // STATIC
  public static async fromFsDirPath(pathArg: string): Promise<VirtualDirectory> {
    const newVirtualDir = new VirtualDirectory();
    newVirtualDir.addSmartfiles(await fs.fileTreeToObject(pathArg, '**/*'));
    return newVirtualDir;
  }

  public static async fromVirtualDirTransferableObject(
    virtualDirTransferableObjectArg: plugins.smartfileInterfaces.VirtualDirTransferableObject
  ): Promise<VirtualDirectory> {
    const newVirtualDir = new VirtualDirectory();
    for (const fileArg of virtualDirTransferableObjectArg.files) {
      newVirtualDir.addSmartfiles([Smartfile.enfoldFromJson(fileArg) as Smartfile]);
    }
    return newVirtualDir;
  }

  // INSTANCE
  public smartfileArray: Smartfile[] = [];

  constructor() {}

  public addSmartfiles(smartfileArrayArg: Smartfile[]) {
    this.smartfileArray = this.smartfileArray.concat(smartfileArrayArg);
  }

  public async getFileByPath(pathArg: string) {
    for (const smartfile of this.smartfileArray) {
      if (smartfile.path === pathArg) {
        return smartfile;
      }
    }
  }

  public async toVirtualDirTransferableObject(): Promise<plugins.smartfileInterfaces.VirtualDirTransferableObject> {
    return {
      files: this.smartfileArray.map((smartfileArg) => smartfileArg.foldToJson()),
    };
  }

  public async saveToDisk(dirArg: string) {
    console.log(`writing VirtualDirectory with ${this.smartfileArray.length} to directory:
    --> ${dirArg}`);
    for (const smartfileArg of this.smartfileArray) {
      const filePath = await smartfileArg.writeToDir(dirArg);
      console.log(`wrote ${smartfileArg.relative} to
        --> ${filePath}`);
    }
  }

  // TODO implement root shifting to get subdirectories as new virtual directories
  // TODO implement root shifting to combine VirtualDirecotries in a parent virtual directory
}