{
			if ( empty( $response->package ) && isset( $response->unavailability_reason ) ) {
				$message = $this->get_update_message( $response->unavailability_reason );
				echo ' <strong>' . wp_kses_post( $message ) . '</strong>';
			}
		}
	}

	/**
	 * Get unavailability reason message.
	 *
	 * @param string $reason  Unavailability reason ID, like 'not_connected'.
	 * @param mixed  $default Default text to return when specified ID has no message attached to it.
	 * @return string
	 */
	public function get_update_message( $reason = '', $default = null ) {
		if ( is_null( $default ) ) {
			$default = '';
		}

		$unavailability_reasons = [
			'update_free'    => __( 'Please update the free version before updating Rank Math SEO PRO.', 'rank-math-pro' ),
			'not_subscribed' => sprintf(
				/* translators: 1: Plugin name, 2: Pricing Link's opening HTML anchor tag, 3: Pricing Link's closing HTML anchor tag. */
				__( 'It seems that you don\'t have an active subscription for %1$s. Please see %2$sdetails and pricing%3$s.', 'rank-math-pro' ),
				'Rank Math SEO PRO',
				'<a href="' . KB::get( 'pro', 'PRO Update Popup Upgrade Notice' ) . '">',
				'</a>'
			),
			'not_connected'  => sprintf(
				/* translators: 1: Link's opening HTML anchor tag, 2: Link's closing HTML anchor tag. */
				__( 'Please %1$s connect Rank Math SEO PRO %2$s for automatic updates.', 'rank-math-pro' ),
				'<a href="' . Helper::get_connect_url() . '">',
				'</a>'
			),
		];

		$unavailability_reasons = $this->do_filter( 'updates/unavailability_reasons', $unavailability_reasons );

		if ( isset( $unavailability_reasons[ $reason ] ) ) {
			return $unavailability_reasons[ $reason ];
		}

		return $default;
	}

	/**
	 * Toggle auto updates option.
	 * Hooked to run when the option is changed in the free version.
	 *
	 * @param string $toggle New status.
	 * @return void
	 */
	public function toggle_auto_update( $toggle ) {
		$auto_updates = (array) get_site_option( 'auto_update_plugins', [] );
		if ( ! empty( $toggle ) && 'off' !== $toggle ) {
			$auto_updates[] = 'seo-by-rank-math-pro/rank-math-pro.php';
			update_site_option( 'auto_update_plugins', array_unique( $auto_updates ) );
			return;
		}

		update_site_option( 'auto_update_plugins', array_diff( $auto_updates, [ 'seo-by-rank-math-pro/rank-math-pro.php' ] ) );
	}

	/**
	 * Don't auto-update if it's a beta version.
	 *
	 * @param bool  $update Whether to update the plugin or not.
	 * @param array $item  The update plugin object.
	 *
	 * @return bool
	 */
	public function auto_update_plugin( $update, $item ) {
		// Show auto-updates control on Plugins page.
		if ( did_action( 'load-plugins.php' ) ) {
			return $update;
		}

		if ( $this->is_rm_pro_update( $item ) && $this->is_beta_update( $item ) ) {
			return false;
		}

		return $update;
	}

	/**
	 * Check if updatable object is RM.
	 *
	 * @param object $item Updatable object.
	 * @return boolean
	 */
	public function is_rm_pro_update( $item ) {
		return isset( $item->slug ) &&
			'seo-by-rank-math-pro' === $item->slug &&
			isset( $item->new_version );
	}

	/**
	 * Check if given version is beta.
	 *
	 * @param object $item Update data.
	 * @return boolean
	 */
	public function is_beta_update( $item ) {
		return ( is_object( $item ) && isset( $item->new_version ) && false !== stripos( $item->new_version, 'beta' ) );
	}

	/**
	 * Hide "update scheduled in X hours" message if update is a beta version because we don't auto-update those.
	 *
	 * @param string $html        HTML string.
	 * @param string $plugin_file Plugin file relative to the plugin directory.
	 * @param array  $plugin_data Plugin update data.
	 * @return string
	 */
	public function plugin_auto_update_setting_html( $html, $plugin_file, $plugin_data ) {
		if ( 'seo-by-rank-math-pro/rank-math-pro.php' !== $plugin_file ) {
			return $html;
		}

		if ( ! empty( $plugin_data['is_beta'] ) ) {
			$html = str_replace( 'class="auto-update-time"', 'class="auto-update-time hidden"', $html );
		}

		return $html;
	}

	/**
	 * Set should_send to true if Pro update is available, to send the notification email.
	 * Notification feature is only available if auto-updates are disabled.
	 *
	 * @param boolean $should_send Original should_send value.
	 * @param mixed   $transient   update_plugins site ransient value.
	 * @return boolean
	 */
	public function should_send_update_notification( $should_send, $transient ) {
		if ( $this->get_auto_update_setting() ) {
			return $should_send;
		}

		if ( ! $this->is_update_available( $transient ) ) {
			return $should_send;
		}

		$new_version = $transient->response['seo-by-rank-math-pro/rank-math-pro.php']->new_version;

		// Now let's check if we've already sent this email.
		$sent = get_option( 'rank_math_update_notifications_sent', [ 'pro' => [ 'new_version' => '1.0' ] ] );
		if ( ! isset( $sent['pro'] ) ) {
			$sent['pro'] = [ 'new_version' => '1.0' ];
		}

		if ( version_compare( $sent['pro']['new_version'], $new_version, '>=' ) ) {
			return $should_send;
		}

		return true;
	}

	/**
	 * Add Pro to notification product list if an update is available.
	 *
	 * @param array $products  Products data array.
	 * @param mixed $transient Transient value.
	 * @return array
	 */
	public function update_notification_products( $products, $transient ) {
		if ( $this->get_auto_update_setting() ) {
			return $products;
		}

		if ( ! $this->is_update_available( $transient ) ) {
			return $products;
		}

		$products['pro'] = [
			'name'        => __( 'Rank Math PRO', 'rank-math-pro' ),
			'old_version' => RANK_MATH_PRO_VERSION,
			'new_version' => $transient->response['seo-by-rank-math-pro/rank-math-pro.php']->new_version,
			'changelog'   => KB::get( 'changelog', 'PRO Update Popup Chagelog Link' ),
		];

		return $products;
	}

	/**
	 * Check if update is available for the PRO version.
	 *
	 * @param  mixed $transient The update_plugins transient value.
	 * @return boolean
	 */
	public function is_update_available( $transient ) {
		if ( ! is_object( $transient )
			|| empty( $transient->response )
			|| empty( $transient->response['seo-by-rank-math-pro/rank-math-pro.php'] )
			|| empty( $transient->response['seo-by-rank-math-pro/rank-math-pro.php']->new_version )
		) {
			return false;
		}

		return true;
	}

	/**
	 * Get Auto update setting status.
	 *
	 * @return bool
	 */
	public function get_auto_update_setting() {
		return in_array( 'seo-by-rank-math-pro/rank-math-pro.php', (array) get_site_option( 'auto_update_plugins', [] ), true );
	}

	/**
	 * Connect auto-update toggles: if we enable it for the Pro, then Free should be enabled too,
	 * and if we disable it for Free then it should be disabled for the Pro too.
	 *
	 * @param string $option     Option name.
	 * @param mixed  $value      Option value.
	 * @param mixed  $old_value  Previous option value before the change.
	 * @param int    $network_id Network ID.
	 * @return void
	 */
	public function connect_auto_update_toggles( $option, $value, $old_value, $network_id ) {
		$this->remove_action( 'update_site_option_auto_update_plugins', 'connect_auto_update_toggles', 20 );
		if ( ! is_array( $value ) ) {
			return;
		}

		$free_file = 'seo-by-rank-math/rank-math.php';
		$pro_file  = 'seo-by-rank-math-pro/rank-math-pro.php';

		// If we just enabled it for Rank Math SEO Pro.
		if ( in_array( $pro_file, $value, true ) && ! in_array( $pro_file, $old_value, true ) && ! in_array( $free_file, $value, true ) ) {
			$value[] = $free_file;
			update_site_option( $option, $value );
			return;
		}

		// If we just disabled it for Rank Math SEO Free.
		if ( ! in_array( $free_file, $value, true ) && in_array( $free_file, $old_value, true ) && in_array( $pro_file, $value, true ) ) {
			$value = array_diff( $value, [ $pro_file ] );
			update_site_option( $option, $value );
			return;
		}
	}
}