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<?php
namespace cybot\cookiebot\lib;
class Cookie_Consent implements Cookie_Consent_Interface {
/**
* Array of cookiebot consent states
*
* It can have 4 items:
* - necessary
* - preferences
* - statistics
* - marketing
*
* @var array consent state
*
* @since 1.2.0
*/
private $states = array();
/**
* @var array|null
*/
private $cookie;
/**
* Scan cookiebot cookie
*
* @param $default_cookie
*
* @since 1.2.0
* @version 2.4.1
*/
public function __construct( $default_cookie = null ) {
$this->cookie = ( isset( $_COOKIE['CookieConsent'] ) ) ? sanitize_text_field( wp_unslash( $_COOKIE['CookieConsent'] ) ) : $default_cookie;
$this->scan_cookie();
}
/**
* Scans cookiebot consent cookie and fills in $states with accepted consents.
*
* @since 1.2.0
* @version 2.4.1
*/
public function scan_cookie() {
// default - set strictly necessary cookies
$this->add_state( 'necessary' );
if ( ! empty( $this->cookie ) ) {
switch ( $this->cookie ) {
case '0':
// The user has not accepted cookies - set strictly necessary cookies only
break;
case '-1':
// The user is not within a region that requires consent - all cookies are accepted
$this->add_state( 'preferences' );
$this->add_state( 'statistics' );
$this->add_state( 'marketing' );
break;
default:
// Read current user consent in encoded JavaScript format
$valid_php_json = preg_replace(
'/\s*:\s*(\w+?)([}\[,])/',
':"$1"$2',
preg_replace(
'/([{\[,])\s*(\w+?):/',
'$1"$2":',
str_replace( "'", '"', stripslashes( $this->cookie ) )
)
);
$cookie_consent = json_decode( $valid_php_json );
if (
isset( $cookie_consent->preferences ) &&
filter_var( $cookie_consent->preferences, FILTER_VALIDATE_BOOLEAN )
) {
// Current user accepts preference cookies
$this->add_state( 'preferences' );
}
if (
isset( $cookie_consent->statistics ) &&
filter_var( $cookie_consent->statistics, FILTER_VALIDATE_BOOLEAN )
) {
// Current user accepts statistics cookies
$this->add_state( 'statistics' );
}
if (
isset( $cookie_consent->marketing ) &&
filter_var( $cookie_consent->marketing, FILTER_VALIDATE_BOOLEAN )
) {
// Current user accepts marketing cookies
$this->add_state( 'marketing' );
}
}
}
}
/**
* Adds state to $states variable
*
* @param $state string new state
*
* @since 1.2.0
*/
public function add_state( $state ) {
if ( ! $this->is_cookie_state_accepted( $state ) ) {
$this->states[] = $state;
}
}
/**
* Returns cookiebot cookie consent state
*
* @return array array List of accepted cookiebot consents
*
* @since 1.2.0
*/
public function get_cookie_states() {
if ( empty( $this->states ) ) {
$this->scan_cookie();
}
return $this->states;
}
/**
* Checks if the cookie states are accepted.
*
* @param $states array Cookie states to check if it is accepted.
*
* @return bool
*
* @since 1.3.0
*/
public function are_cookie_states_accepted( array $states ) {
return array_reduce(
$states,
function ( $are_cookie_states_accepted, $state ) {
if ( ! $are_cookie_states_accepted ) {
return false;
}
return $this->is_cookie_state_accepted( $state );
},
true
);
}
/**
* Checks if the cookie state is accepted
*
* @param $state string Cookie state to check if it is accepted
*
* @return bool
*/
public function is_cookie_state_accepted( $state ) {
return in_array( $state, $this->states, true );
}
}