botserver/src/util.ts

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| General Bots Copyright (c) pragmatismo.cloud. All rights reserved.          |
| Licensed under the AGPL-3.0.                                                |
|                                                                             |
| According to our dual licensing model, this program can be used either      |
| under the terms of the GNU Affero General Public License, version 3,        |
| or under a proprietary license.                                             |
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| The texts of the GNU Affero General Public License with an additional       |
| permission and of our proprietary license can be found at and               |
| in the LICENSE file you have received along with this program.              |
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| This program is distributed in the hope that it will be useful,             |
| but WITHOUT ANY WARRANTY, without even the implied warranty of              |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                |
| GNU Affero General Public License for more details.                         |
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| "General Bots" is a registered trademark of pragmatismo.cloud.              |
| The licensing of the program under the AGPLv3 does not imply a              |
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\*****************************************************************************/

/**
 * @fileoverview General Bots local utility.
 */

'use strict';
import * as YAML from 'yaml';
import SwaggerClient from 'swagger-client';
import Fs from 'fs';

export class GBUtil {
  public static repeat(chr, count) {
    let str = '';
    for (let x = 0; x < count; x++) {
      str += chr;
    }
    return str;
  }

  public static padL(value, width, pad) {
    if (!width || width < 1) return value;

    if (!pad) pad = ' ';
    const length = width - value.length;
    if (length < 1) return value.substr(0, width);

    return (GBUtil.repeat(pad, length) + value).substr(0, width);
  }

  public static padR(value, width, pad) {
    if (!width || width < 1) return value;

    if (!pad) pad = ' ';
    const length = width - value.length;
    if (length < 1) value.substr(0, width);

    return (value + GBUtil.repeat(pad, length)).substr(0, width);
  }

  public static async getDirectLineClient(min) {

    let config = {
      url: `http://127.0.0.1:${process.env.port}/api/messages`, 
      spec: JSON.parse(Fs.readFileSync('directline-3.0.json', 'utf8')),
      requestInterceptor: req => {
        req.headers['Authorization'] = `Bearer ${min.instance.webchatKey}`;
      }
    };    
    if (process.env.STORAGE_FILE) {
      config['spec'].servers = [{ url: `http://127.0.0.1:${process.env.PORT}/api/messages` }];
      config['openapi'] = '3.0.0';
    }
    return await new SwaggerClient(config);
  }

  public static toYAML(json) {
    const doc = new YAML.Document();
    doc.contents = json;
    return doc.toString();
  }

  public static sleep(ms) {
    return new Promise(resolve => {
      setTimeout(resolve, ms);
    });
  }

  public static caseInsensitive(listOrRow) {
    if (!listOrRow || typeof listOrRow !== 'object') {
      return listOrRow;
    }
    const lowercase = oldKey => (typeof oldKey === 'string' ? oldKey.toLowerCase() : oldKey);
    const createCaseInsensitiveProxy = obj => {
      const propertiesMap = new Map(Object.keys(obj).map(propKey => [lowercase(propKey), obj[propKey]]));
      const caseInsensitiveGetHandler = {
        get: (target, property) => propertiesMap.get(lowercase(property))
      };
      return new Proxy(obj, caseInsensitiveGetHandler);
    };
    if (Array.isArray(listOrRow)) {
      return listOrRow.map(row => createCaseInsensitiveProxy(row));
    } else {
      return createCaseInsensitiveProxy(listOrRow);
    }
  }
}