gmail_parkimeter_admin_contact_connector.user.js

// ==UserScript==
// @name         Gmail Parkimeter Admin Search email
// @author       Israel Viana
// @namespace    https://admin.parkimeter.com
// @version      0.1
// @description  Adds a button for searching email senders in Parkimeter Admin
// @match        https://mail.google.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=githubusercontent.com
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    window.setInterval(function() {

        // Select all elements with the three attributes and grandparent h3
        const elems = document.querySelectorAll('h3 > * > [data-hovercard-id][email][name]');

        // Filter out elements whose next sibling is a link (to prevent adding the same infinite times)
        const filtered = [...elems].filter(el => {
            const next = el.nextElementSibling; // only consider element nodes
            return !next || next.tagName !== 'A';
        });

        if (typeof filtered[0] != "undefined") {

            const button = document.createElement('a');
            button.textContent = 'Search in Admin';
            Object.assign(button.style, {
                border: '1px solid #ff7900',
                borderRadius: '0.5em',
                background: 'white url(https://assets.parkimeter.com/images/logos/parkimeter-logo-icon-100.png) 0.3em center no-repeat',
                padding: '0.1em 0.5em 0.0em 1.9em',
                fontWeight: 'bold',
                color: '#ff7900',
                margin: '0 0.5em',
                backgroundSize: '1.3em',
                cursor: 'pointer',
                display: 'inline-block',
                textDecoration: 'none',
            });
            button.class = "parkimeter-admin-contact";
            let email = filtered[0].getAttribute("email").replace(/^<|>$/g, '');
            button.href = "https://admin.parkimeter.com/search?type=email&term=" + encodeURI(email) + "&strict=on";
            button.target = "_blank";
            filtered[0].after(button);
        }

    }, 100);

})();