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writefreely/static/js/webmonetization.js

94 lines
3.8 KiB

/*
* Copyright © 2020-2021 A Bunch Tell LLC.
*
* This file is part of WriteFreely.
*
* WriteFreely is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, included
* in the LICENSE file in this source code package.
*/
let unlockingSplitContent = false;
let unlockedSplitContent = false;
let pendingSplitContent = false;
function showWMPaywall($content, $split) {
let $readmoreSell = document.createElement('div')
$readmoreSell.id = 'readmore-sell';
$content.insertAdjacentElement('beforeend', $readmoreSell);
$readmoreSell.appendChild($split);
$readmoreSell.insertAdjacentHTML("beforeend", '\n\n<p class="font sans">For <strong>$5 per month</strong>, you can read this and other great writing across our site and other websites that support Web Monetization.</p>')
$readmoreSell.insertAdjacentHTML("beforeend", '\n\n<p class="font sans"><a href="https://coil.com/signup?ref=writefreely" class="btn cta" target="coil">Get started</a> <a href="https://coil.com/?ref=writefreely" class="btn cta secondary">Learn more</a></p>')
}
function initMonetization() {
let $content = document.querySelector('.e-content')
let $post = document.getElementById('post-body')
let $split = $post.querySelector('.split')
if (document.monetization === undefined || $split == null) {
if ($split) {
showWMPaywall($content, $split)
}
return
}
document.monetization.addEventListener('monetizationstop', function(event) {
if (pendingSplitContent) {
// We've seen the 'pending' activity, so we can assume things will work
document.monetization.removeEventListener('monetizationstop', progressHandler)
return
}
// We're getting 'stop' without ever starting, so display the paywall.
showWMPaywall($content, $split)
});
document.monetization.addEventListener('monetizationpending', function (event) {
pendingSplitContent = true
})
let progressHandler = function(event) {
if (unlockedSplitContent) {
document.monetization.removeEventListener('monetizationprogress', progressHandler)
return
}
if (!unlockingSplitContent && !unlockedSplitContent) {
unlockingSplitContent = true
getSplitContent(event.detail.receipt, function (status, data) {
unlockingSplitContent = false
if (status == 200) {
$split.textContent = "Your subscriber perks start here."
$split.insertAdjacentHTML("afterend", "\n\n"+data.data.html_body)
} else {
$split.textContent = "Something went wrong while unlocking subscriber content."
}
unlockedSplitContent = true
})
}
}
function getSplitContent(receipt, callback) {
let params = "receipt="+encodeURIComponent(receipt)
let http = new XMLHttpRequest();
http.open("POST", "/api/collections/" + window.collAlias + "/posts/" + window.postSlug + "/splitcontent", true);
// Send the proper header information along with the request
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
http.onreadystatechange = function () {
if (http.readyState == 4) {
callback(http.status, JSON.parse(http.responseText));
}
}
http.send(params);
}
document.monetization.addEventListener('monetizationstart', function() {
if (!unlockedSplitContent) {
$split.textContent = "Unlocking subscriber content..."
}
document.monetization.removeEventListener('monetizationstart', progressHandler)
});
document.monetization.addEventListener('monetizationprogress', progressHandler);
}