Add WooCommerce product with Contact Form 7

capture-data-wpcf7.php

<?php
/* Capture CF7 data */
add_action( 'wpcf7_mail_sent', 'wpcf7_capture_data' );

function wpcf7_capture_data( $contact_form ) {
    
    $submission = WPCF7_Submission::get_instance();
  
    if ( $submission ) {
        $posted_data = $submission->get_posted_data();
    }
    
    // The 999 represents our CF7 form ID
    if( $posted_data['_wpcf7'] == 999 ) { 
    	
	// Add WooCommerce product

    }
}