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paywall.js
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paywall.js
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/*********************************************************************************
* Drop in script for integrating the Aerobatic paywall with the Chargebee JS API
* The Chargebee JS API script should be included before this script.
* Other than the Chargebee JS API, the only other dependency is window.fetch. If
* you need to support browsers that don't support fetch, you should include a polyfill.
* Here's the final set of script declarations:
*
* <script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/2.0.4/fetch.min.js" integrity="sha256-eOUokb/RjDw7kS+vDwbatNrLN8BIvvEhlLM5yogcDIo=" crossorigin="anonymous"></script>
<script src="https://js.chargebee.com/v2/chargebee.js"></script>
<script src="https://cdn.aerobatic.com/js-libs/v1.0.0/paywall.min.js"
data-paywall-script
data-paywall-path="/paywall"
data-paywall-auth0-path="/members"></script>
* Read more at https://www.aerobatic.com/docs/paywall/paywall-js-script/
**********************************************************************************/
// Polyfill for NodeList.forEach
// https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach#Polyfill
if (window.NodeList && !NodeList.prototype.forEach) {
NodeList.prototype.forEach = function(callback, thisArg) {
thisArg = thisArg || window;
for (var i = 0; i < this.length; i++) {
callback.call(thisArg, this[i], i, this);
}
};
}
(function() {
var queryParams = parseQuery(location.search);
var loggedInUser = getLoggedInUser();
var paywallScript = document.querySelector("script[data-paywall-script]");
var isLocalhost =
location.hostname === "127.0.0.1" || location.hostname === "localhost";
var isConfiguredCorrectly =
isLocalhost === false &&
window.__aerobatic__ !== undefined &&
window.__aerobatic__.chargebeeSiteName;
var chargebeeSite;
var paywallPath = paywallScript.getAttribute("data-paywall-path");
var auth0Path = paywallScript.getAttribute("data-paywall-auth0-path");
if (isConfiguredCorrectly) {
chargebeeSite = window.__aerobatic__.chargebeeSiteName;
// Initialize the Chargebeejs object
var chargebeeInstance = Chargebee.init({
site: chargebeeSite
});
chargebeeInstance.setPortalSession(function() {
// We will discuss on how to implement this end point below.
return fetch(paywallPath + "/billing-portal-session", {
method: "POST",
headers: {
"Content-Type": "application/json"
},
body: JSON.stringify({
return_url: location.pathname
}),
credentials: "same-origin"
}).then(function(resp) {
return resp.json();
});
});
}
// Show logged-in or anonymous blocks based on if there is a
// loggedInUser
if (loggedInUser) {
document
.querySelectorAll("[data-paywall-username]")
.forEach(function(elem) {
elem.innerText = loggedInUser.nickname;
});
var logoutButton = document.querySelector("[data-paywall-logout");
if (logoutButton) {
logoutButton.addEventListener("click", onLogoutClick);
}
document
.querySelectorAll("[data-paywall-subscribe]")
.forEach(function(elem) {
elem.addEventListener("click", onSubscribeClick);
});
// Only show the billing portal link if the logged-in user has subscriptions. Each
// subscription is represented by a role.
var hasSubscriptions =
loggedInUser.authorization &&
loggedInUser.authorization.roles &&
loggedInUser.authorization.roles.length > 0;
var billingPortalButton = document.querySelector(
"[data-paywall-billing-portal]"
);
if (billingPortalButton) {
if (!hasSubscriptions) {
billingPortalButton.style.display = "none";
} else {
billingPortalButton.addEventListener("click", onBillingPortalClick);
}
}
document
.querySelectorAll("[data-paywall-logged-in]")
.forEach(function(elem) {
elem.style.display = "block";
});
} else {
// Display blocks of content intended for anonymous users only
document
.querySelectorAll("[data-paywall-anonymous]")
.forEach(function(elem) {
elem.style.display = "block";
});
document.querySelectorAll("[data-paywall-signup]").forEach(function(elem) {
elem.setAttribute("href", auth0Path + "?initial_screen=signUp");
});
document.querySelectorAll("[data-paywall-login]").forEach(function(elem) {
elem.setAttribute("href", auth0Path + "?initial_screen=login");
});
}
// Bind the query parameters passed to the thank you screen to corresponding
// data-paywall-* elements.
if (location.pathname === paywallPath + "/subscribe-thankyou") {
document
.querySelectorAll("[data-paywall-thankyou-plan-id]")
.forEach(function(elem) {
elem.innerText = queryParams.plan_id;
});
document
.querySelectorAll("[data-paywall-thankyou-subscription-id]")
.forEach(function(elem) {
elem.innerText = queryParams.subscription_id;
});
document
.querySelectorAll("[data-paywall-thankyou-return-url]")
.forEach(function(elem) {
elem.setAttribute("href", queryParams.return_url);
});
}
function getLoggedInUser() {
// If there is a logged in user show their name linking to the my account page
// If the user is anonymous, show a sign up link
// Parse the user object from the document.cookie
var user;
var userMatch = document.cookie.match(/[; ]?user=([^;]+)/);
if (userMatch && userMatch.length > 1) {
user = JSON.parse(unescape(userMatch[1]));
}
return user;
}
function displayMisconfiguredAlert() {
if (isLocalhost) {
return alert(
"Paywall is only functional when your site is deployed to Aerobatic"
);
}
return alert(
"The chargebeeSiteName needs to be declared using the client-config plugin declared in aerobatic.yml"
);
}
function onLogoutClick() {
if (!isConfiguredCorrectly) {
return displayMisconfiguredAlert();
}
chargebeeInstance.logout();
location.href = auth0Path + "?__logout=1";
}
function onSubscribeClick() {
if (!isConfiguredCorrectly) {
return displayMisconfiguredAlert();
}
var planId = this.getAttribute("data-paywall-plan-id");
// Allow the paid content to live at a different url.
var contentUrl = this.getAttribute("data-paywall-content-url");
if (!contentUrl) {
contentUrl = location.href;
}
chargebeeInstance.openCheckout({
hostedPage: function() {
// Make a fetch call to get the hosted checkout page
return fetch(paywallPath + "/hosted-checkout-page", {
method: "POST",
headers: {
"Content-Type": "application/json"
},
body: JSON.stringify({
plan_id: planId,
return_url: contentUrl
}),
credentials: "same-origin"
}).then(function(resp) {
return resp.json();
});
},
error: function(error) {
// Optional
// will be called if the promise passed causes an error
},
success: function(hostedPageId) {}
});
}
function onBillingPortalClick() {
if (!isConfiguredCorrectly) {
return displayMisconfiguredAlert();
}
var cbPortal = chargebeeInstance.createChargebeePortal();
cbPortal.open({
close: function() {
// Reload the page in case the user no longer has access to the content
location.reload();
},
subscriptionChanged: function(data) {
// Tell Aerobatic that the Chargebee subscription has changed. Behind the scenes, Aerobatic
// will update the auth0 roles to match the active subscriptions.
return fetch(paywallPath + "/subscription-changed", {
method: "POST",
headers: {
"Content-Type": "application/json"
},
body: JSON.stringify({ subscription_id: data.subscription.id }),
credentials: "same-origin"
});
},
subscriptionCancelled: function(data) {
// Tell Aerobatic that the Chargebee subscription has changed. Behind the scenes, Aerobatic
// will update the auth0 roles to match the active subscriptions.
return fetch(paywallPath + "/subscription-cancelled", {
method: "POST",
headers: {
"Content-Type": "application/json"
},
body: JSON.stringify({ subscription_id: data.subscription.id }),
credentials: "same-origin"
});
}
});
}
function parseQuery(queryString) {
var query = {};
var pairs = (queryString[0] === "?"
? queryString.substr(1)
: queryString
).split("&");
for (var i = 0; i < pairs.length; i++) {
var pair = pairs[i].split("=");
query[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1] || "");
}
return query;
}
})();