// site-controller.js
// Copyright (C) 2021 Digital Telepresence, LLC
// License: Apache-2.0

'use strict';

const path = require('path');

const { SiteCommon } = require(path.join(__dirname, 'site-common'));
const { SiteLog } = require(path.join(__dirname, 'site-log'));

class SiteController extends SiteCommon {

  constructor (dtp, name) {
    super(dtp);
    this.name = name;
    this.log = new SiteLog(dtp, `ctrl:${name}`);
  }

  async loadChild (filename) {
    let child = await require(filename)(this.dtp);
    return await child.start();
  }

  getPaginationParameters (req, maxPerPage) {
    const pagination = {
      p: parseInt(req.query.p || '1', 10),
      cpp: parseInt(req.query.cpp || maxPerPage.toString(), 10),
    };
    if (pagination.p < 1) {
      pagination.p = 1;
    }
    if (pagination.cpp > maxPerPage) {
      pagination.cpp = maxPerPage;
    }
    pagination.skip = (pagination.p - 1) * pagination.cpp;
    return pagination;
  }

  createDisplayList (name) {
    const { displayEngine: displayEngineService } = this.dtp.services;
    return displayEngineService.createDisplayList(name);
  }

  async createCsrfToken (req, name) {
    const { csrfToken } = this.dtp.platform.services;
    return csrfToken.create(req, { name });
  }
}

module.exports.SiteController = SiteController;