dtp-base/lib/site-controller.js

// site-controller.js
// Copyright (C) 2022,2024 DTP Technologies, LLC
// All Rights Reserved

'use strict';

import path from 'node:path';

import multer from 'multer';
import slugTool from 'slug';

import { SiteCommon } from './site-common.js';
import { SiteLog } from './site-log.js';

export class SiteController extends SiteCommon {

  constructor (dtp, definition) {
    super(dtp);
    this.name = definition.name;
    this.log = new SiteLog(dtp, definition);

    this.children = { };
  }

  async loadChild (filename) {
    const pathObj = path.parse(filename);

    const ControllerClass = (await import(filename)).default;
    if (!ControllerClass) {
      this.log.error('failed to receive a default export class from child controller', { script: pathObj.name });
      throw new Error('Child controller failed to provide a default export');
    }

    this.log.info('loading child controller', {
      script: pathObj.name,
      name: ControllerClass.name,
      slug: ControllerClass.slug,
    });
    const controller = new ControllerClass(this.dtp);

    this.children[ControllerClass.slug] = controller;
    return controller.start();
  }

  getPaginationParameters (req, maxPerPage, pageParamName = 'p', cppParamName = 'cpp') {
    const pagination = {
      p: parseInt(req.query[pageParamName] || '1', 10),
      cpp: parseInt(req.query[cppParamName] || 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;
  }

  createMulter (slug, options) {
    if (!!slug && (typeof slug === 'object')) {
      options = slug;
      slug = this.name;
    } else {
      slug = slug || this.name;
    }
    slug = slugTool(slug).toLowerCase();
    options = Object.assign({
      dest: `/tmp/${this.dtp.config.site.domainKey}/${slug}`,
    }, options || { });
    return multer(options);
  }

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