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import cookie from 'cookie';
import debug from './debug';
let refreshRequest = null;
/**
* Refreshes the GDPR `country_code` cookie every 6 hours (like A8C_Analytics wpcom plugin).
* @param {AbortSignal} signal optional AbortSignal to cancel the request (use if needed)
* @returns {Promise<void>} Promise that resolves when the refreshing is done (or immediately)
*/
export default async function refreshCountryCodeCookieGdpr( signal = undefined ) {
const cookies = cookie.parse( document.cookie );
if ( cookies.country_code && cookies.region ) {
debug(
'refreshCountryCodeCookieGdpr: country_code ( value: "%s") and region ( value: "%s") cookies are fresh',
cookies.country_code,
cookies.region
);
return;
}
if ( refreshRequest === null ) {
refreshRequest = requestGeoData( signal )
.then( ( { country_short, region } ) => {
setCookie( 'country_code', country_short );
// For some IP ranges we don't detect the region and the value returned by the `/geo` endpoint is `"-"`.
// In that case set the cookie to `unknown` This cannot happen for `country_short` because the `/geo`
// endpoint returns a 404 HTTP status when not even the country can be detected.
setCookie( 'region', region === '-' ? 'unknown' : region );
} )
.catch( ( err ) => {
debug( 'refreshCountryCodeCookieGdpr: error: ', err );
// Set the cookies to `unknown` to signal that the `/geo` request already failed and there's no point
// sending it again. But set them only if they don't already exist, don't overwrite valid values!
if ( ! cookies.country_code ) {
setCookie( 'country_code', 'unknown' );
}
if ( ! cookies.region ) {
setCookie( 'region', 'unknown' );
}
} )
.finally( () => {
refreshRequest = null;
} );
}
await refreshRequest;
}
async function requestGeoData( signal = undefined ) {
// cache buster
const v = new Date().getTime();
const res = await fetch( 'https://public-api.wordpress.com/geo/?v=' + v, { signal } );
if ( ! res.ok ) {
throw new Error( `The /geo endpoint returned an error: ${ res.status } ${ res.statusText }` );
}
return await res.json();
}
function setCookie( name, value ) {
const maxAge = 6 * 60 * 60; // 6 hours in seconds
document.cookie = cookie.serialize( name, value, { path: '/', maxAge } );
debug( 'refreshCountryCodeCookieGdpr: %s cookie set to %s', name, value );
}
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