https://pika.page/assets/controllers/back_controller-87d03ef81e94e…c2d4ce229a3c129b16329e9987c1824c06c992f0.js

1import { Controller } from "@hotwired/stimulus"
2import { Turbo } from "@hotwired/turbo-rails"
3
4// Turbo Drive preserves module scope across visits, so this tracks in-app history.
5// site_view.js eagerly imports this controller to record pages before Stimulus connects.
6let previousUrl = null
7// Seed the landing page immediately. Turbo's first turbo:load doesn't fire until
8// window.load (seconds, on image-heavy pages), so waiting for it loses the origin
9// page when a reader clicks a link before then.
10let currentUrl = document.querySelector('meta[name="back-skip"]') ? null : window.location.href
11
12// Redirecting pages, such as the password form, should not become return destinations.
13document.addEventListener("turbo:load", () => {
14  if (document.querySelector('meta[name="back-skip"]')) return
15  if (window.location.href === currentUrl) return
16
17  previousUrl = currentUrl
18  currentUrl = window.location.href
19})
20
21export default class extends Controller {
22  navigate(event) {
23    if (event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey) {
24      return
25    }
26
27    if (this.hasReturnDestination) {
28      event.preventDefault()
29      Turbo.visit(previousUrl)
30    }
31  }
32
33  get hasReturnDestination() {
34    if (!previousUrl || previousUrl === currentUrl) return false
35
36    return new URL(previousUrl).origin === window.location.origin
37  }
38};