// site-common.js
// Copyright (C) 2022 DTP Technologies, LLC
// License: Apache-2.0

'use strict';

const path = require('path');
const pug = require('pug');

const Events = require('events');
class SiteCommon extends Events {

  constructor (dtp) {
    super();
    this.dtp = dtp;
    this.appTemplateRoot = path.join(this.dtp.config.root, 'app', 'templates');
  }

  regenerateSession (req) {
    return new Promise((resolve, reject) => {
      req.session.regenerate((err) => {
        if (err) {
          return reject(err);
        }
        resolve();
      });
    });
  }

  saveSession (req) {
    return new Promise((resolve, reject) => {
      req.session.save((err) => {
        if (err) {
          return reject(err);
        }
        resolve();
      });
    });
  }

  isValidString (text) {
    return text && (typeof text === 'string') && (text.length > 0);
  }

  loadAppTemplate (type, name) {
    return pug.compileFile(path.join(this.appTemplateRoot, type, name));
  }

  loadViewTemplate (filename) {
    const scriptFile = path.join(this.dtp.config.root, 'app', 'views', filename);
    return pug.compileFile(scriptFile);
  }
}

module.exports.SiteCommon = SiteCommon;