import { ExposeProvider } from './classes.exposeprovider.js';
import type { SmartExpose } from './classes.smartexpose.js';
import * as plugins from './plugins.js';

export interface IWebdavExposeProviderOptions {
  webdavCredentials: plugins.smartwebdav.IWebdavClientOptions;
  webdavSubPath: string;
}

export class WebDavExposeProvider extends ExposeProvider {
  public smartExposeRef: SmartExpose;
  public webdavClient: plugins.smartwebdav.WebdavClient;
  public options: IWebdavExposeProviderOptions;

  constructor(smartexposeRefArg: SmartExpose, optionsArg: IWebdavExposeProviderOptions) {
    super();
    this.smartExposeRef = smartexposeRefArg;
    this.options = optionsArg;
  }

  public async houseKeeping(): Promise<void> {
    const directoryContents = await this.webdavClient.listDirectory(this.options.webdavSubPath);
    for (const fileStat of directoryContents) {
      // lets read the meta.json file
      if (fileStat.filename.endsWith('.json')) {
      }
    }
  }

  public async getFilePathById(idArg: string): Promise<string> {
    return plugins.smartpath.join(this.options.webdavSubPath, idArg);
  }

  public async ensureBaseDir(): Promise<void> {
    await this.webdavClient.ensureDirectory(this.options.webdavSubPath);
  }

  public async start(): Promise<void> {
    this.webdavClient = new plugins.smartwebdav.WebdavClient(this.options.webdavCredentials);
    await this.ensureBaseDir();
    await this.houseKeeping();
    this.smartExposeRef.taskmanager.addAndScheduleTask(new plugins.taskbuffer.Task({
      name: 'webdavHousekeeping',
      taskFunction: async () => {
        await this.houseKeeping();
      },
    }), '0 * * * * *')
  }

  public async stop(): Promise<void> {
    // Nothing to do here
  }

  public async exposeFile(optionsArg: {
    smartFile: plugins.smartfile.SmartFile;
    deleteAfterMillis?: number;
    privateUrl?: boolean;
  }): Promise<{ url: string; id: string; status: 'created' | 'updated' }> {
    await this.ensureBaseDir();
    const fileId = plugins.smartunique.shortId(30);
    console.log(`Expsing file under id: ${fileId}. (${
      plugins.smartformat.prettyBytes(optionsArg.smartFile.contents.length)
    })`);
    const webdavFilePath = await this.getFilePathById(fileId);
    const fileToUpload = await plugins.smartfile.SmartFile.fromBuffer(webdavFilePath, optionsArg.smartFile.contents);
    await this.webdavClient.uploadSmartFileArray([fileToUpload]);
    console.log(`checking file presence: ${webdavFilePath}`);
    const existsOnWebdav = await this.webdavClient.wdClient.exists(webdavFilePath);
    const publicUrl = plugins.smartpath.join(this.smartExposeRef.options.exposedBaseUrl, webdavFilePath);
    console.log(`cehcking for file at ${publicUrl}`)
    const response = await plugins.smartrequest.getBinary(publicUrl);
    plugins.smartexpect.expect(response.body).toEqual(fileToUpload.contents);
    if (optionsArg.deleteAfterMillis) {
      console.log(`Scheduling deletion of file with id: ${fileId} in ${optionsArg.deleteAfterMillis}ms...`);
      plugins.smartdelay.delayFor(optionsArg.deleteAfterMillis).then(() => {
        console.log(`Deleting file with id: ${fileId}...`);
        this.deleteFileById(fileId);
        console.log(`Deleted file with id: ${fileId}`);
      });
    }
    return {
      url: publicUrl,
      id: fileId,
      status: 'created',
    };
  }

  public async wipeAll(): Promise<{ id: string; status: 'deleted' | 'failed' | 'notfound' }[]> {
    const directoryContents = await this.webdavClient.listDirectory(this.options.webdavSubPath);
    await this.webdavClient.ensureEmptyDirectory(this.options.webdavSubPath);
    return directoryContents.map((contentArg) => {
      return {
        id: contentArg.filename,
        status: 'deleted',
      };
    });
  }

  public async deleteFileById(
    idArg: string
  ): Promise<{ id: string; status: 'deleted' | 'failed' | 'notfound' }> {
    const filePath = await this.getFilePathById(idArg);
    if (!this.webdavClient.wdClient.exists(filePath)) {
      return {
        id: idArg,
        status: 'notfound',
      };
    }

    await this.webdavClient.deleteFile(filePath);
    return {
      id: idArg,
      status: 'deleted',
    };
  }
}