/*****************************************************************************\
|                                               ( )_  _                       |
|    _ _    _ __   _ _    __    ___ ___     _ _ | ,_)(_)  ___   ___     _     |
|   ( '_`\ ( '__)/'_` ) /'_ `\/' _ ` _ `\ /'_` )| |  | |/',__)/' _ `\ /'_`\   |
|   | (_) )| |  ( (_| |( (_) || ( ) ( ) |( (_| || |_ | |\__, \| (˅) |( (_) )  |
|   | ,__/'(_)  `\__,_)`\__  |(_) (_) (_)`\__,_)`\__)(_)(____/(_) (_)`\___/'  |
|   | |                ( )_) |                                                |
|   (_)                 \___/'                                                |
|                                                                             |
| General Bots Copyright (c) Pragmatismo.io. 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.                                             |
|                                                                             |
| 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.              |
|                                                                             |
| 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.                         |
|                                                                             |
| "General Bots" is a registered trademark of Pragmatismo.io.                 |
| The licensing of the program under the AGPLv3 does not imply a              |
| trademark license. Therefore any rights, title and interest in              |
| our trademarks remain entirely with us.                                     |
|                                                                             |
\*****************************************************************************/

/**
 * @fileoverview General Bots server core.
 */

'use strict';

import { IGBCoreService } from 'botlib';
import fs = require('fs');
import urlJoin = require('url-join');
import { GuaribasInstance } from '../models/GBModel';

/**
 * Handles the importing of packages.
 */
export class GBImporter {
  public core: IGBCoreService;

  constructor(core: IGBCoreService) {
    this.core = core;
  }

  public async importIfNotExistsBotPackage(botId: string, packageName: string, localPath: string) {
    const packageJson = JSON.parse(fs.readFileSync(urlJoin(localPath, 'package.json'), 'utf8'));
    if (botId === undefined) {
      botId = packageJson.botId;
    }
    const instance = await this.core.loadInstance(botId);
    if (instance !== undefined) {
      return instance;
    } else {
      return await this.createInstanceInternal(botId, localPath, packageJson);
    }
  }

  private async createInstanceInternal(botId: string, localPath: string, packageJson: any) {
    const settings = JSON.parse(fs.readFileSync(urlJoin(localPath, 'settings.json'), 'utf8'));
    const servicesJson = JSON.parse(fs.readFileSync(urlJoin(localPath, 'services.json'), 'utf8'));

    packageJson = { ...packageJson, ...settings, ...servicesJson };

    if (botId !== undefined) {
      packageJson.botId = botId;
    }

    return GuaribasInstance.create(packageJson);
  }
}