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Wait to load turnstile until user interacts with Touchpoints form #2105

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Wait to load turnstile until user interacts with Touchpoints form #2105

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46 changes: 37 additions & 9 deletions app/views/components/widget/_fba.js.erb
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ function FBAform(d, N) {
this.options.formSpecificScript();
}
<%- if form.enable_turnstile? %>
this.loadTurnstile();
this.lazyLoadTurnstile();
<% end %>
<%- if form.has_rich_text_questions? %>
this.loadQuill();
Expand Down Expand Up @@ -215,7 +215,6 @@ function FBAform(d, N) {
const elapsed = Date.now() - self.turnstileInitiatedAt;
if (elapsed > 5 * 60 * 1000) {
self.initTurnstile();
self.turnstileInitiatedAt = Date.now();
return false;
}
<% end %>
Expand Down Expand Up @@ -719,18 +718,47 @@ function FBAform(d, N) {
},
<% end %>
<%- if form.enable_turnstile? %>
<%# Defer loading the Turnstile challenge until the user actually engages with %>
<%# the form, so we don't run a challenge for the many visitors who never %>
<%# interact. Triggers on first form interaction and on modal open. %>
lazyLoadTurnstile: function() {
let self = this;
this.turnstileRequested = false;

<%# Load the challenge at most once, on the first sign of engagement. %>
let trigger = function() {
<%# One-shot guard: load the Turnstile API + render the widget only once. %>
if (self.turnstileRequested) {
return;
}
self.turnstileRequested = true;
self.loadTurnstile();
};

<%# First interaction with any form field (covers all delivery methods). %>
<%# focusin bubbles (unlike focus); { once: true } auto-removes the listener. %>
let formElement = this.formElement();
if (formElement) {
formElement.addEventListener('focusin', trigger, { once: true });
formElement.addEventListener('input', trigger, { once: true });
}
},
loadTurnstile: function() {
if (window.turnstile) {
<%# API already loaded (host page or another form loaded it) — render now. %>
this.initTurnstile();
return;
}
let script = document.createElement("script");
script.src = "https://challenges.cloudflare.com/turnstile/v0/api.js";
script.async = true;
script.defer = true;
script.src = "https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicit";
script.onload = this.initTurnstile;
this.turnstileInitiatedAt = Date.now();
if (!window.turnstile) {
document.head.appendChild(script);
}
script.onerror = function() {
console.error("Touchpoints: failed to load Cloudflare Turnstile API.");
}
document.head.appendChild(script);
},
initTurnstile: function() {
this.turnstileInitiatedAt = Date.now();
turnstile.remove("#turnstile-container");
turnstile.render("#turnstile-container", {
sitekey: "<%= ENV['TURNSTILE_SITE_KEY'] %>",
Expand Down