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<?php
/**
 * Tracking gtag.js class.
 *
 * @since 7.15.0
 *
 * @author  Mircea Sandu
 */

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class MonsterInsights_Tracking_Gtag extends MonsterInsights_Tracking_Abstract {
	/**
	 * Holds the name of the tracking type.
	 *
	 * @since 7.15.0
	 *
	 * @var string name of the tracking type
	 */
	public $name = 'gtag';

/**
	 * Version of the tracking class.
	 *
	 * @since 7.15.0
	 *
	 * @var string version of the tracking class
	 */
	public $version = '1.0.0';

/**
	 * Primary class constructor.
	 *
	 * @since 7.15.0
	 */
	public function __construct() {
	}

/**
	 * Array of options that will be made persistent by setting them before the pageview.
	 *
	 * @see https://developers.google.com/analytics/devguides/collection/gtagjs/setting-values
	 *
	 * @return array options for persistent values, like custom dimensions
	 *
	 * @since 7.15.0
	 */
	public function frontend_tracking_options_persistent() {
		return apply_filters( 'monsterinsights_frontend_tracking_options_persistent_gtag_before_pageview', [] );
	}

/**
	 * Get frontend tracking options for the gtag script.
	 *
	 * This function is used to return an array of parameters
	 * for the frontend_output() function to output. These are
	 * generally dimensions and turned on GA features.
	 *
	 * @param bool $encoded Whether to return a JavaScript object representation of the options
	 *
	 * @return array|string options for the gtag config
	 *
	 * @since 7.15.0
	 */
	public function frontend_tracking_options( $encoded = false ) {
		global $wp_query;
		$options = [];

$tracking_id = monsterinsights_get_v4_id();
		if ( empty( $tracking_id ) ) {
			return $encoded ? wp_json_encode( $options ) : $options;
		}

$placeholder = '';

if ( $encoded ) {
			$placeholder = '!@#';
		}

$cross_domains = monsterinsights_get_option( 'cross_domains', [] );
		$allow_anchor  = monsterinsights_get_option( 'allow_anchor', false );

if ( $allow_anchor ) {
			$options['allow_anchor'] = 'true';
		}

if ( class_exists( 'MonsterInsights_AMP' ) ) {
			$options['use_amp_client_id'] = 'true';
		}

$options['forceSSL'] = 'true';

// Anonymous data.
		if ( monsterinsights_get_option( 'anonymize_ips', false ) ) {
			$options['anonymize_ip'] = 'true';
		}

$options = apply_filters( 'monsterinsights_frontend_tracking_options_gtag_before_scripts', $options );

// Add Enhanced link attribution.
		if ( monsterinsights_get_option( 'link_attribution', false ) ) {
			$options['link_attribution'] = 'true';
		}

// Add cross-domain tracking.
		if ( is_array( $cross_domains ) && ! empty( $cross_domains ) ) {
			$linker_domains = [];
			foreach ( $cross_domains as $cross_domain ) {
				if ( ! empty( $cross_domain['domain'] ) ) {
					$linker_domains[] = $cross_domain['domain'];
				}
			}
			$options['linker'] = [
				'domains' => $linker_domains,
			];
		}

if ( monsterinsights_is_debug_mode() ) {
			$options['debug_mode'] = true;
		}

$options = apply_filters( 'monsterinsights_frontend_tracking_options_gtag_before_pageview', $options );
		$options = apply_filters( 'monsterinsights_frontend_tracking_options_before_pageview', $options, $this->name, $this->version );

if ( is_404() ) {
			if ( monsterinsights_get_option( 'hash_tracking', false ) ) {
				$options['page_path'] = "{$placeholder}'/404.html?page=' + document.location.pathname + document.location.search + location.hash + '&from=' + document.referrer{$placeholder}";
			} else {
				$options['page_path'] = "{$placeholder}'/404.html?page=' + document.location.pathname + document.location.search + '&from=' + document.referrer{$placeholder}";
			}
		} elseif ( $wp_query->is_search ) {
			$pushstr = "/?s=";
			if ( 0 === (int) $wp_query->found_posts ) {
				$options['page_path'] = $pushstr . 'no-results:' . rawurlencode( $wp_query->query_vars['s'] ) . "&cat=no-results";
			} elseif ( 1 === (int) $wp_query->found_posts ) {
				$options['page_path'] = $pushstr . rawurlencode( $wp_query->query_vars['s'] ) . "&cat=1-result";
			} elseif ( $wp_query->found_posts > 1 && $wp_query->found_posts < 6 ) {
				$options['page_path'] = $pushstr . rawurlencode( $wp_query->query_vars['s'] ) . "&cat=2-5-results";
			} else {
				$options['page_path'] = $pushstr . rawurlencode( $wp_query->query_vars['s'] ) . "&cat=plus-5-results";
			}
		} elseif ( monsterinsights_get_option( 'hash_tracking', false ) ) {
			$options['page_path'] = "{$placeholder}location.pathname + location.search + location.hash{$placeholder}";
		}

if ( monsterinsights_get_option( 'userid', false ) && is_user_logged_in() ) {
			$value                 = get_current_user_id();
			$options['wp_user_id'] = $value;
		}

$options = apply_filters( 'monsterinsights_frontend_tracking_options_gtag_end', $options );

if ( $encoded ) {
			return str_replace(
				[ '"' . $placeholder, $placeholder . '"' ],
				'',
				wp_json_encode( $options )
			);
		}

return $options;
	}

/**
	 * Get frontend output.
	 *
	 * This function is used to return the Javascript
	 * to output in the head of the page for the given
	 * tracking method.
	 *
	 * @return string javascript to output
	 *
	 * @since 7.15.0
	 */
	public function frontend_output() {
		$options_v4     = $this->frontend_tracking_options( true );
		$persistent     = $this->frontend_tracking_options_persistent();
		$v4_id          = monsterinsights_get_v4_id_to_output();
		$src            = apply_filters( 'monsterinsights_frontend_output_gtag_src', '//www.googletagmanager.com/gtag/js?id=' . $v4_id );
		$compat_mode    = apply_filters( 'monsterinsights_get_option_gtagtracker_compatibility_mode', true );
		$compat         = $compat_mode ? 'window.gtag = __gtagTracker;' : '';
		$track_user     = monsterinsights_track_user();
		$output         = '';
		$reason         = '';
		$attr_string    = monsterinsights_get_frontend_analytics_script_atts();
		$gtag_async     = apply_filters( 'monsterinsights_frontend_gtag_script_async', true ) ? 'async' : '';
		if ( defined('cmplz_plugin') || defined('cmplz_premium') || defined('cmplz_free') ) {
			add_filter( 'cmplz_known_script_tags', function( $tags ) {
				$tags[] = array(
					'name' => 'google-analytics',
					'category' => 'statistics',
					'urls' => array(
						'www.googletagmanager.com/gtag/js',
						'googletagmanager.com/gtag/js',
						'googletagmanager.com',
						'__gtagTracker',
						'MonsterInsightsDualTracker',
						'monsterinsights_frontend_tracking_gtag_after_pageview',
					),
				);
				return $tags;
			});
		}
		ob_start(); ?>
		
		<?php if ( ! $track_user ) {
			if ( empty( $v4_id ) ) {
				$reason = __( 'Note: MonsterInsights is not currently configured on this site. The site owner needs to authenticate with Google Analytics in the MonsterInsights settings panel.', 'google-analytics-for-wordpress' );
				$output .= '' . PHP_EOL;
			} elseif ( current_user_can( 'monsterinsights_save_settings' ) ) {
				$reason = __( 'Note: MonsterInsights does not track you as a logged-in site administrator to prevent site owners from accidentally skewing their own Google Analytics data.' . PHP_EOL . 'If you are testing Google Analytics code, please do so either logged out or in the private browsing/incognito mode of your web browser.', 'google-analytics-for-wordpress' );
				$output .= '' . PHP_EOL;
			} else {
				$reason = __( 'Note: The site owner has disabled Google Analytics tracking for your user role.', 'google-analytics-for-wordpress' );
				$output .= '' . PHP_EOL;
			}
			echo $output; // phpcs:ignore
		} ?>
		<?php if ( ! empty( $v4_id ) ) {
			do_action( 'monsterinsights_tracking_gtag_frontend_before_script_tag' );
			?>
			<script src="<?php echo $src; // phpcs:ignore ?>" <?php echo $attr_string; // phpcs:ignore ?> <?php echo esc_attr( $gtag_async ); ?>></script>
			<script<?php echo $attr_string; // phpcs:ignore ?>>
				var mi_version = '<?php echo MONSTERINSIGHTS_VERSION; // phpcs:ignore ?>';
				var mi_track_user = <?php echo $track_user ? 'true' : 'false'; ?>;
				var mi_no_track_reason = <?php echo $reason ? "'" . esc_js( $reason ) . "'" : "''"; ?>;
				<?php do_action( 'monsterinsights_tracking_gtag_frontend_output_after_mi_track_user' ); ?>
				var MonsterInsightsDefaultLocations = <?php echo $this->get_default_locations(); // phpcs:ignore -- JSON ?>;
				<?php if ( $this->is_utm_stripped_server() ) : ?>
				MonsterInsightsDefaultLocations.page_location = window.location.href;
				<?php endif; ?>
				if ( typeof MonsterInsightsPrivacyGuardFilter === 'function' ) {
					var MonsterInsightsLocations = (typeof MonsterInsightsExcludeQuery === 'object') ? MonsterInsightsPrivacyGuardFilter( MonsterInsightsExcludeQuery ) : MonsterInsightsPrivacyGuardFilter( MonsterInsightsDefaultLocations );
				} else {
					var MonsterInsightsLocations = (typeof MonsterInsightsExcludeQuery === 'object') ? MonsterInsightsExcludeQuery : MonsterInsightsDefaultLocations;
				}

<?php if ($this->should_do_optout()) { ?>
				var disableStrs = [
					<?php if (! empty( $v4_id )) { ?>
					'ga-disable-<?php echo esc_js( $v4_id ); ?>',
					<?php } ?>
				];

/* Function to detect opted out users */
				function __gtagTrackerIsOptedOut() {
					for (var index = 0; index < disableStrs.length; index++) {
						if (document.cookie.indexOf(disableStrs[index] + '=true') > -1) {
							return true;
						}
					}

return false;
				}

/* Disable tracking if the opt-out cookie exists. */
				if (__gtagTrackerIsOptedOut()) {
					for (var index = 0; index < disableStrs.length; index++) {
						window[disableStrs[index]] = true;
					}
				}

/* Opt-out function */
				function __gtagTrackerOptout() {
					for (var index = 0; index < disableStrs.length; index++) {
						document.cookie = disableStrs[index] + '=true; expires=Thu, 31 Dec 2099 23:59:59 UTC; path=/';
						window[disableStrs[index]] = true;
					}
				}

if ('undefined' === typeof gaOptout) {
					function gaOptout() {
						__gtagTrackerOptout();
					}
				}
				<?php } ?>
				window.dataLayer = window.dataLayer || [];

window.MonsterInsightsDualTracker = {
					helpers: {},
					trackers: {},
				};
				if (mi_track_user) {
					function __gtagDataLayer() {
						dataLayer.push(arguments);
					}

function __gtagTracker(type, name, parameters) {
						if (!parameters) {
							parameters = {};
						}

if (parameters.send_to) {
							__gtagDataLayer.apply(null, arguments);
							return;
						}

if (type === 'event') {
							<?php if ($v4_id) { ?>
							parameters.send_to = monsterinsights_frontend.v4_id;
							var hookName = name;
							if (typeof parameters['event_category'] !== 'undefined') {
								hookName = parameters['event_category'] + ':' + name;
							}

if (typeof MonsterInsightsDualTracker.trackers[hookName] !== 'undefined') {
								MonsterInsightsDualTracker.trackers[hookName](parameters);
							} else {
								__gtagDataLayer('event', name, parameters);
							}
							<?php } ?>

} else {
							__gtagDataLayer.apply(null, arguments);
						}
					}

__gtagTracker('js', new Date());
					__gtagTracker('set', {
						'developer_id.dZGIzZG': true,
						<?php
						if ( ! empty( $persistent ) ) {
							foreach ( $persistent as $key => $value ) {
								echo "'" . esc_js( $key ) . "' : '" . esc_js( $value ) . "',";
							}
						}
						?>
					});
					if ( MonsterInsightsLocations.page_location ) {
						__gtagTracker('set', MonsterInsightsLocations);
					}
					<?php if (! empty( $v4_id )) { ?>
					__gtagTracker('config', '<?php echo esc_js( $v4_id ); ?>', <?php echo $options_v4; // phpcs:ignore ?> );
					<?php } ?>
					<?php echo esc_js( $compat ); ?>
					<?php if (apply_filters( 'monsterinsights_tracking_gtag_frontend_gatracker_compatibility', true )) { ?>
					(function () {
						/* https://developers.google.com/analytics/devguides/collection/analyticsjs/ */
						/* ga and __gaTracker compatibility shim. */
						var noopfn = function () {
							return null;
						};
						var newtracker = function () {
							return new Tracker();
						};
						var Tracker = function () {
							return null;
						};
						var p = Tracker.prototype;
						p.get = noopfn;
						p.set = noopfn;
						p.send = function () {
							var args = Array.prototype.slice.call(arguments);
							args.unshift('send');
							__gaTracker.apply(null, args);
						};
						var __gaTracker = function () {
							var len = arguments.length;
							if (len === 0) {
								return;
							}
							var f = arguments[len - 1];
							if (typeof f !== 'object' || f === null || typeof f.hitCallback !== 'function') {
								if ('send' === arguments[0]) {
									var hitConverted, hitObject = false, action;
									if ('event' === arguments[1]) {
										if ('undefined' !== typeof arguments[3]) {
											hitObject = {
												'eventAction': arguments[3],
												'eventCategory': arguments[2],
												'eventLabel': arguments[4],
												'value': arguments[5] ? arguments[5] : 1,
											}
										}
									}
									if ('pageview' === arguments[1]) {
										if ('undefined' !== typeof arguments[2]) {
											hitObject = {
												'eventAction': 'page_view',
												'page_path': arguments[2],
											}
										}
									}
									if (typeof arguments[2] === 'object') {
										hitObject = arguments[2];
									}
									if (typeof arguments[5] === 'object') {
										Object.assign(hitObject, arguments[5]);
									}
									if ('undefined' !== typeof arguments[1].hitType) {
										hitObject = arguments[1];
										if ('pageview' === hitObject.hitType) {
											hitObject.eventAction = 'page_view';
										}
									}
									if (hitObject) {
										action = 'timing' === arguments[1].hitType ? 'timing_complete' : hitObject.eventAction;
										hitConverted = mapArgs(hitObject);
										__gtagTracker('event', action, hitConverted);
									}
								}
								return;
							}

try {
								f.hitCallback();
							} catch (ex) {
							}
						};
						__gaTracker.create = newtracker;
						__gaTracker.getByName = newtracker;
						__gaTracker.getAll = function () {
							return [];
						};
						__gaTracker.remove = noopfn;
						__gaTracker.loaded = true;
						window['__gaTracker'] = __gaTracker;
					})();
					<?php } ?>
				} else {
					<?php if ($this->should_do_optout()) { ?>
					console.log("<?php echo esc_js( $reason ); ?>");
					(function () {
						function __gtagTracker() {
							return null;
						}

window['__gtagTracker'] = __gtagTracker;
						window['gtag'] = __gtagTracker;
					})();
					<?php } ?>
				}
			</script>
			<?php
			/*
			 * New separate script tags for conversion tracking and other post-pageview actions
			 * Each hook will create its own script tag for better separation and debugging
			 *
			 * @since 9.6.2
			 */

// Get all actions hooked to this action
			global $wp_filter;
			$hook_name = 'monsterinsights_frontend_tracking_gtag_after_pageview';

if ( isset( $wp_filter[ $hook_name ] ) ) {
				$callbacks = $wp_filter[ $hook_name ]->callbacks;

// Sort by priority
				ksort( $callbacks );

foreach ( $callbacks as $priority => $priority_callbacks ) {
					foreach ( $priority_callbacks as $callback_key => $callback_data ) {
						// Capture output for this specific callback
						ob_start();

// Execute this specific callback
						if ( is_array( $callback_data['function'] ) ) {
							// Class method
							if ( is_object( $callback_data['function'][0] ) ) {
								call_user_func( $callback_data['function'] );
							} else {
								// Static method
								call_user_func( $callback_data['function'] );
							}
						} else {
							// Function
							call_user_func( $callback_data['function'] );
						}

$callback_output = ob_get_clean();

// Only create script tag if there's output
						if ( ! empty( trim( $callback_output ) ) ) {
							?>
							<script<?php echo $attr_string; // phpcs:ignore ?>>
								<?php echo $callback_output; // phpcs:ignore ?>
							</script>
							<?php
						}
					}
				}
			}
			?>
		<?php } else { ?>
			
		<?php } ?>
		
		<?php
		$output = ob_get_contents();
		ob_end_clean();

return $output;
	}

public function should_do_optout() {
		return ! ( defined( 'MI_NO_TRACKING_OPTOUT' ) && MI_NO_TRACKING_OPTOUT );
	}

/**
	 * Get current page URL and
	 */
	private function get_default_locations() {
		global $wp;

$urls['page_location'] = add_query_arg( !empty($_SERVER['QUERY_STRING']) ? $_SERVER['QUERY_STRING'] : '', '', trailingslashit( home_url( $wp->request ) ) ); // phpcs:ignore

if ( $referer = wp_get_referer() ) {
			$urls['page_referrer'] = $referer;
		}

return wp_json_encode( $urls );
	}

/**
	 * Check the server is among them who stripped utm parameters.
	 * For this kind of server we will get page URL from JS.
	 *
	 * @return bool
	 */
	private function is_utm_stripped_server() {

// Is WP Engine server.
		if ( isset( $_SERVER['IS_WPE'] ) && $_SERVER['IS_WPE'] ) {
			return true;
		}

return apply_filters( 'monsterinsights_is_utm_stripped_server', false );
	}
}