hustle-custom-display-condition.php

<?php
/**
 * Plugin Name: [Hustle Pro] - checks if cookie is set
 * Plugin URI: https://premium.wpmudev.org/
 * Author: Maciek Palmowski @ WPMUDEV
 * Author URI: https://premium.wpmudev.org/
 * License: GPLv2 or later
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( defined( 'WP_CLI' ) && WP_CLI ) {
	return;
}

add_filter(
	'hustle_visibility_condition_options',
	function( $conditions ) {
		$conditions['cookie_set'] = __( 'Cookie set' );

		return $conditions;
	}
);

add_action(
	'hustle_visibility_condition_templates',
	function() { ?>
	<script id="hustle-visibility-rule-tpl--cookie_set" type="text/template">

		<label class="sui-label"><?php esc_html_e( 'Choose set cookies', 'hustle' ); ?></label>

		<div class="sui-side-tabs">

			<div class="sui-tabs-menu">

				<label for="{{ groupId }}-{{ type }}-rule--cookie-set-except"
					class="sui-tab-item">
					<input type="radio"
						name="{{ groupId }}-{{ type }}-rule--cookie-set"
						value="except"
						id="{{ groupId }}-{{ type }}-rule--cookie-set-except"
						data-attribute="filter_type"
						{{ _.checked( filter_type, 'except' ) }} />
					<?php esc_html_e( 'All cookies except', 'hustle' ); ?>
				</label>

				<label for="{{ groupId }}-{{ type }}-rule--cookie-set-only"
					class="sui-tab-item">
					<input type="radio"
						name="{{ groupId }}-{{ type }}-rule--cookie-set"
						value="only"
						id="{{ groupId }}-{{ type }}-rule--cookie-set-only"
						data-attribute="filter_type"
						{{ _.checked( filter_type, 'only' ) }} />
					<?php esc_html_e( 'Only these cookies', 'hustle' ); ?>
				</label>

			</div>

			<div class="sui-tabs-content">

				<div class="sui-tab-content active">

					<textarea placeholder="<?php esc_html_e( 'Enter the cookie\'s names.', 'hustle' ); ?>"
						class="sui-form-control"
						data-attribute="cookies">{{{ cookies }}}</textarea>

					<span class="sui-description"><?php esc_html_e( 'Enter only one cookie name per line and.', 'hustle' ); ?></span>

				</div>

			</div>

		</div>

		</script>

	<script>
		jQuery( document ).on( "hustleAddViewConditions", function( event, ConditionBase ) {
			Optin.View.Conditions.cookie_set = ConditionBase.extend({ // eslint-disable-line camelcase
				conditionId: 'cookie_set',
				setProperties() {
					this.title = 'Cookie set';
				},
				defaults: function() {
					return {
						'cookies': '',
						'filter_type': 'except' // except | only
					};
				},
				getHeader: function() {
					let length = 0;
					if ( this.getAttribute( 'cookies' ).length ) {
						length = this.countLines( this.getAttribute( 'cookies' ) );
					}
					if ( length ) {
						return ( 'only' === this.getAttribute( 'filter_type' ) ? optinVars.messages.condition_labels.only_these : optinVars.messages.condition_labels.except_these ).replace( '{number}', length );
					} else {
						return 'only' === this.getAttribute( 'filter_type' ) ? optinVars.messages.condition_labels.none : optinVars.messages.condition_labels.all;
					}
				},
				body: function() {
					return this.template( this.getData() );
				}
			});
		});
	</script>
		<?php
	}
);

add_action(
	'plugins_loaded',
	function() {
		if ( ! class_exists( 'Opt_In_Condition_Abstract' ) ) {
			return;
		}

		class Opt_In_Condition_Cookie_Set extends Opt_In_Condition_Abstract {
			/**
			 * Returns whether the condition was met.
			 *
			 * @since 4.2.1
			 */
			public function is_allowed() {
				if ( ! isset( $this->args->cookies ) || ! isset( $this->args->filter_type ) || empty( $_COOKIE ) ) {
					return false;
				}

				$is_cookie_set = false;
				$cookies       = $this->parse_textarea();

				$user_cookies_keys = array_keys( $_COOKIE );

				foreach ( $cookies as $key => $value ) {
					if ( in_array( $key, $user_cookies_keys, true ) ) {

						if ( $this->is_cookie_set( $key, $value ) ) {
							$is_cookie_set = true;
							break;
						}
					}
				}

				if ( 'only' === $this->args->filter_type ) {
					return $is_cookie_set;
				} else {
					return ! $is_cookie_set;
				}
			}

			/**
			 * Returns array from textarea.
			 * If we're checking is cookie set and it's value than it should value name|value format.
			 *
			 * @since 4.2.1
			 */
			private function parse_textarea() {
				$cookies = array();

				$textarea = preg_split( '/\r\n|\r|\n/', $this->args->cookies );

				foreach ( $textarea as $line ) {
					$cookie                        = explode( '|', $line );
					$cookies[ trim( $cookie[0] ) ] = ! empty( $cookie[1] ) ? trim( $cookie[1] ) : '';
				}

				return $cookies;
			}

			/**
			 * Returns if cookie is set and/or cookie is set and has a correct value.
			 *
			 * @param mixed $key Cookie name.
			 * @param mixed $value Cookie value.
			 * @since 4.2.1
			 */
			private function is_cookie_set( $key, $value ) {
				return ( ! empty( $value ) && isset( $_COOKIE[ $key ] ) && $_COOKIE[ $key ] === $value )
				|| ( empty( $value ) );
			}

		}
	}
);