Given a post object, return a boolean, indicating whether the geo-location data
associated with the post is allowed to be displayed publicly.

@param {Object} post Post object
@returns {boolean|null} Whether the geo-location data is shared publicly.
function( post ) {
		if ( ! post ) {
			return null;
		}

		const isSharedPublicly = getValueByKey( post.metadata, 'geo_public' );

		if ( parseInt( isSharedPublicly, 10 ) ) {
			return true;
		}

		if ( undefined === isSharedPublicly ) {
			// If they have no geo_public value but they do have a lat/long, then we assume they saved with Calypso
			// before it supported geo_public, in which case we should treat it as private.
			if (
				getValueByKey( post.metadata, 'geo_latitude' ) ||
				getValueByKey( post.metadata, 'geo_longitude' )
			) {
				return false;
			}

			return true;
		}

		return false;
	}