botserver/packages/basic.gblib/services/ImageProcessingServices.ts

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'use strict';

import Path from 'path';
import { GBLog, GBMinInstance } from 'botlib';
import { DialogKeywords } from './DialogKeywords.js';
import sharp from 'sharp';
import joinImages from 'join-images-updated';
import { CollectionUtil } from 'pragmatismo-io-framework';
import { GBAdminService } from '../../admin.gbapp/services/GBAdminService.js';
import urlJoin from 'url-join';
import { GBServer } from '../../../src/app.js';
import { GBLogEx } from '../../core.gbapp/services/GBLogEx.js';

/**
 * Image processing services of conversation to be called by BASIC.
 */
export class ImageProcessingServices {
  /**
   * Sharpen the image.
   *
   * @example file = SHARPEN file
   */
  public async sharpen({ pid, file: file }) {
    const { min, user } = await DialogKeywords.getProcessInfo(pid);
    GBLogEx.info(min, `BASIC: Image Processing SHARPEN ${file}.`);

    const gbfile = DialogKeywords.getFileByHandle(file);
    const data = await sharp(gbfile.data)
      .sharpen({
        sigma: 2,
        m1: 0,
        m2: 3,
        x1: 3,
        y2: 15,
        y3: 15
      })
      .toBuffer();

    const newFile = {
      filename: gbfile.filename,
      data: data

    };
    return;
  }

  /**
   * SET ORIENTATION VERTICAL
   * 
   * file = MERGE file1, file2, file3 
   */
  public async mergeImage({pid, files})
  {
    const { min, user } = await DialogKeywords.getProcessInfo(pid);

    let paths = [];
    await CollectionUtil.asyncForEach(files, async file => {
      const gbfile = DialogKeywords.getFileByHandle(file);  
      paths.push(gbfile.path);
    });

    const botId = min.instance.botId;
    const path = DialogKeywords.getGBAIPath(min.botId);
    const img = await joinImages(paths);
    const localName = Path.join('work', path, 'cache', `img-mrg${GBAdminService.getRndReadableIdentifier()}.png`);
    const url = urlJoin(GBServer.globals.publicAddress, min.botId, 'cache', Path.basename(localName));
    img.toFile(localName);

    return { localName: localName, url: url, data: null };

  }

  /**
   * Sharpen the image.
   *
   * @example file = BLUR file
   */
   public async blur({ pid, file: file }) {
    const { min, user } = await DialogKeywords.getProcessInfo(pid);
    GBLogEx.info(min, `BASIC: Image Processing SHARPEN ${file}.`);

    const gbfile = DialogKeywords.getFileByHandle(file);
    const data = await sharp(gbfile.data)
      .blur()
      .toBuffer();

    const newFile = {
      filename: gbfile.filename,
      data: data
    };
    return;
  }

}