pigallery2/src/backend/model/extension/ExtensionConfigWrapper.ts

import {IConfigClass} from 'typeconfig/common';
import {PrivateConfigClass} from '../../../common/config/private/PrivateConfigClass';
import {ConfigClassBuilder} from 'typeconfig/node';
import {ExtensionConfigTemplateLoader} from './ExtensionConfigTemplateLoader';
import {NotificationManager} from '../NotifocationManager';
import {ServerConfig} from '../../../common/config/private/PrivateConfig';
import {ConfigClassOptions} from 'typeconfig/src/decorators/class/IConfigClass';
import * as fs from 'fs';


const LOG_TAG = '[ExtensionConfigWrapper]';

/**
 * Wraps to original config and makes sure all extension related config is loaded
 */
export class ExtensionConfigWrapper {

  static async original(showDetailedError = false): Promise<PrivateConfigClass & IConfigClass> {
    const pc = ConfigClassBuilder.attachPrivateInterface(new PrivateConfigClass());
    ExtensionConfigTemplateLoader.Instance.loadExtensionTemplates(pc);
    try {
      // make sure the config file exists by the time we load it.
      // TODO: remove this once typeconfig is fixed and can properly load defaults in arrays
      if (!fs.existsSync((pc.__options as ConfigClassOptions<ServerConfig>).configPath)) {
        await pc.save();
      }

      await pc.load(); // loading the basic configs, but we do not know the extension config hierarchy yet

      // TODO make sure that all extensions are present even after loading them from file
    } catch (e) {
      console.error(LOG_TAG, 'Error during loading config. Reverting to defaults.');
      console.error(e);
      if (showDetailedError) {
        console.error(LOG_TAG, 'This is most likely due to: 1) you added a bad configuration in the server.json OR 2) The configuration changed in the latest release.');
        NotificationManager.error('Can\'t load config. Reverting to default. This is most likely due to: 1) you added a bad configuration in the server.json OR 2) The configuration changed in the latest release.', (e.toString ? e.toString() : JSON.stringify(e)));
      }
    }
    return pc;
  }


  static originalSync(showDetailedError = false): PrivateConfigClass & IConfigClass {
    const pc = ConfigClassBuilder.attachPrivateInterface(new PrivateConfigClass());
    ExtensionConfigTemplateLoader.Instance.loadExtensionTemplates(pc);
    try {
      // make sure the config file exists by the time we load it.
      // TODO: remove this once typeconfig is fixed and can properly load defaults in arrays
      if (!fs.existsSync((pc.__options as ConfigClassOptions<ServerConfig>).configPath)) {
        pc.saveSync();
      }
      pc.loadSync(); // loading the basic configs, but we do not know the extension config hierarchy yet
      // TODO make sure that all extensions are present even after loading them from file
    } catch (e) {
      console.error(LOG_TAG, 'Error during loading config. Reverting to defaults.');
      console.error(e);
      if (showDetailedError) {
        console.error(LOG_TAG, 'This is most likely due to: 1) you added a bad configuration in the server.json OR 2) The configuration changed in the latest release.');
        NotificationManager.error('Ca\'nt load config. Reverting to default. This is most likely due to: 1) you added a bad configuration in the server.json OR 2) The configuration changed in the latest release.', (e.toString ? e.toString() : JSON.stringify(e)));
      }
    }
    return pc;
  }
}