Use Passster for WooCommerce product protection

functions.php

<?php 
add_action( 'woocommerce_before_single_product_summary', function() {
	$post_id = get_the_id();

	$activate_protection = get_post_meta( $post_id, 'passster_activate_protection', true );

	// user restriction.
	$user_restriction_type = get_post_meta( $post_id, 'passster_user_restriction_type', true );
	$user_restriction      = get_post_meta( $post_id, 'passster_user_restriction', true );

	// texts.
	$headline    = get_post_meta( $post_id, 'passster_headline', true );
	$instruction = get_post_meta( $post_id, 'passster_instruction', true );
	$placeholder = get_post_meta( $post_id, 'passster_placeholder', true );
	$button      = get_post_meta( $post_id, 'passster_button', true );
	$id          = get_post_meta( $post_id, 'passster_id', true );

	if ( ! $activate_protection ) {
		return;
	}

	// build atts array to validate.
	$atts = array();

	$protection_type = get_post_meta( $post_id, 'passster_protection_type', true );

	if ( \ps_fs()->is_plan_or_trial__premium_only( 'pro' ) ) {
		switch ( $protection_type ) {
			case 'password':
				$password         = get_post_meta( $post_id, 'passster_password', true );
				$atts['password'] = $password;
				$shortcode        = '[passster password="' . $password . '" protection="full" ';
				break;
			case 'passwords':
				$passwords         = get_post_meta( $post_id, 'passster_passwords', true );
				$atts['passwords'] = $passwords;
				$shortcode         = '[passster passwords="' . $passwords . '" protection="full" ';
				break;
			case 'password_list':
				$password_list         = get_post_meta( $post_id, 'passster_password_list', true );
				$atts['password_list'] = $password_list;
				$shortcode             = '[passster password_list="' . $password_list . '" protection="full" ';
				break;
			case 'captcha':
				$atts['captcha'] = true;
				$shortcode       = '[passster captcha="true" protection="full" ';
				break;
			case 'recaptcha':
				$atts['recaptcha'] = true;
				$shortcode         = '[passster recaptcha="true" protection="full" ';
				break;
			case 'api':
				$api         = get_post_meta( $post_id, 'passster_api', true );
				$atts['api'] = $api;
				$shortcode   = '[passster api="' . $api . '" protection="full" ';
				break;
		}

		if ( ! empty( $user_restriction_type ) && ! empty( $user_restriction ) ) {
			if ( 'user-role' === $user_restriction_type ) {
				$atts['role'] = $user_restriction;
			} else {
				$atts['user'] = $user_restriction;
			}
		}

		if ( ! empty( $headline ) ) {
			$shortcode .= 'headline="' . $headline . '" ';
		}

		if ( ! empty( $instruction ) ) {
			$shortcode .= 'instruction="' . $instruction . '" ';
		}

		if ( ! empty( $placeholder ) ) {
			$shortcode .= 'placeholder="' . $placeholder . '" ';
		}

		if ( ! empty( $button ) ) {
			$shortcode .= 'button="' . $button . '" ';
		}

		if ( ! empty( $id ) ) {
			$shortcode .= 'id="' . $id . '" ';
		}
	} else {
		switch ( $protection_type ) {
			case 'password':
				$password         = get_post_meta( $post_id, 'passster_password', true );
				$atts['password'] = $password;
				$shortcode        = '[passster password="' . $password . '" protection="full" ';
				break;
			case 'captcha':
				$atts['captcha'] = true;
				$shortcode       = '[passster captcha="true" protection="full" ';
				break;
		}
	}

	$shortcode .= ']{content}[/passster]';

	// check if valid before restrict anything.
	$valid = passster\PS_Conditional::is_valid( $atts );

	if ( ! $valid ) {
		// replace placeholder with content.
		$shortcode = str_replace( '{content}', $content, $shortcode );

		echo do_shortcode( $shortcode );
		exit;
	}
});