amp-subscriptions-google
Description
Implements subscription-style access protocol for Subscribe with Google.
Required Scripts
<script async custom-element="amp-subscriptions-google" src="https://cdn.ampproject.org/v0/amp-subscriptions-google-0.1.js"></script>
<script async custom-element="amp-subscriptions-google" src="https://cdn.ampproject.org/v0/amp-subscriptions-google-0.1.js"></script>
Introduction
The amp-subscriptions-google is the extension that enables Subscribe with Google in an AMP page.
See amp-subscriptions for more details on AMP Subscriptions.
See Subscribe with Google GitHub repo for details on the project itself.
Configuration
The amp-subscriptions-google is configured as part of amp-subscriptions configuration.
<head> ... <script async custom-element="amp-subscriptions" src="https://cdn.ampproject.org/v0/amp-subscriptions-0.1.js" ></script> <script async custom-element="amp-subscriptions-google" src="https://cdn.ampproject.org/v0/amp-subscriptions-google-0.1.js" ></script> <script type="application/json" id="amp-subscriptions"> { "services": [ { // Local service configuration }, { "serviceId": "subscribe.google.com" } ] } </script> </head>
Real Time Config (rtc)
Real Time Config allows the publisher to specify the sku or sku's for a subscribe button at page load time. The allows user specific offers, time limited offers etc.
To enable rtc add a skuMapUrl to the subscribe.google.com service.
<script type="application/json" id="amp-subscriptions"> { "services": [ { // Local service configuration }, { "serviceId": "subscribe.google.com" "skuMapUrl": "https://example.com/sky/map/endpoint" } ] } </script>
The skuMapUrl is called on page load. It should be a map of element id's and configurations:
{ "subscribe.google.com": { // button that goes straight to purchase flow "elementId": { "sku": "sku" }, // button that launches an offer carousel "anotherElementId": { "carouselOptions": { "skus": ["basic", "premium_monthly"], } } } }
Each configuration corresponds to the sku or skus associated with the button.
To enable a button for rtc add the subscriptions-google-rtc attribute. If this attribute is present the button will be disabled until the skuMapUrl request is completed. Once the skuMap is resolved the subscriptions-google-rtc attribute will be removed and subscriptions-google-rtc-set attribute added. These attributes may be used for CSS styling, however it is recommended that the button not be hidden if it will cause a page re-layout when displayed.
skuMapUrl can be the same as the local service auth url as the JSON objects do not conflict. If the auth url is cacheable (max-age=1 is sufficient) this will allow in a single request to the server to resove authentication and mapping. Entitlements pingback
As described in amp-subscriptions, if a pingbackUrl is specified by the local service, the entitlements response returned by the "winning" service will be sent to the pingbackUrl via a POST request.
If subscribe.google.com is the "winning" service, the request to the pingbackUrl will be of the following format:
{ "raw":"...", "source":"google", "service":"subscribe.google.com", "granted":true, "grantReason":"SUBSCRIBER", "data":{ "source":"google", "products":[ ... ], "subscriptionToken":"..." } }
Where data matches the entitlements response format.
Example with markup
<head>
...
<script
async
custom-element="amp-subscriptions"
src="https://cdn.ampproject.org/v0/amp-subscriptions-0.1.js"
></script>
<script
async
custom-element="amp-subscriptions-google"
src="https://cdn.ampproject.org/v0/amp-subscriptions-google-0.1.js"
></script>
<script type="application/json" id="amp-subscriptions">
{
"services": [
{
// Local service configuration
"authorizationUrl": "https://...",
"pingbackUrl": "https://...",
"actions": {
"login": "https://...",
"subscribe": "https://..."
}
},
{
"serviceId": "subscribe.google.com"
}
]
}
</script>
<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "NewsArticle",
{...},
"isAccessibleForFree": "False",
"publisher": {
"@type": "Organization",
"name": "The Norcal Tribune",
"logo": {...}
},
"hasPart": {
"@type": "WebPageElement",
"isAccessibleForFree": "False",
"cssSelector" : ".paywall"
},
"isPartOf": {
"@type": ["CreativeWork", "Product"],
"name" : "The Norcal Tribune",
"productID": "norcal_tribune.com:basic"
}
}
</script>
</head>
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