@snippetify/book-reader/src/PageBuilder.js

Book reader utilities

const Page = require('./models/Page')
const ReferenceBuilder = require('./ReferenceBuilder')

class PageBuilder {
  constructor () {
    this.config = {}
    this.page = new Page({})
    this.referenceBuilder = ReferenceBuilder.getInstance()
  }

  static getInstance () {
    return new PageBuilder()
  }

  setConfig (config) {
    this.config = config
    this.referenceBuilder.setConfig(config.reference)
    return this
  }

  setPage (page) {
    this.page = page
    return this
  }

  reset () {
    this.page = new Page({})
    return this
  }

  build () {
    this.addReferences()
    return $('<div />', { 'data-no': this.page.no, 'data-abbr': this.page.abbr }).html(this.page.content)
  }

  addReferences () {
    let paragraph = 0
    this.page.content = $(this.page.content)
      .filter((_, elem) => elem.nodeType !== 3) // Remove text node
      .map((i, elem) => {
        if ($(elem).is('p')) {
          $(elem).attr({ 'data-pos': ++paragraph }).append(this.referenceBuilder.build(this.page, paragraph)) // Add references
        }
        return $(elem).attr({ 'data-id': `${this.page.no}.${i + 1}` }).get(0) // Add element id
      })
    return this
  }
}

module.exports = PageBuilder
module.exports.default = PageBuilder