import { Emitter } from '../../event-emitter'
import { PageView } from '../page-tracker'

export class PageTracker extends Emitter {
  private pages: PageView[]

  constructor() {
    super()
    this.pages = []
  }

  public allPages = () => {
    return this.pages
  }

  public setPages(newPages: PageView[]) {
    this.pages = newPages
  }

  public get currentPage() {
    return this.pages[this.pages.length - 1]
  }

  public get sessionFocusTime() {
    return this.pages.reduce((acc, curr) => acc + curr.focus_intervals.reduce((acc, curr) => acc + curr, 0), 0)
  }
}