// ==UserScript==
// @name        blog.csdn.net without login
// @description Bypass the annoying login popup of blog.csdn.net and select/copy code without any problem.
// @match       *://blog.csdn.net/*/article/*
// @version     2022.06.18.1
// @updateURL   https://raw.githubusercontent.com/lebr0nli/blog-csdn-without-login/main/blog-csdn-without-login.user.js
// ==/UserScript==

function copyToClipboard(text) {
    const textArea = document.createElement('textarea');
    textArea.value = text;
    document.body.appendChild(textArea);
    textArea.select();
    document.execCommand('copy');
    textArea.remove();
}

// wait for the page to load
setTimeout(() => {
    document.body.querySelectorAll('.hljs-button.signin').forEach(node => {
        node.dataset.title = 'Copy';
        node.removeAttribute('data-report-click');
        // Make mdcp.signin do nothing
        node.setAttribute('onclick', 'window.mdcp ? window.mdcp.signin=(e)=>{} : null;');
        // Copy the code
        node.addEventListener('click', e => {
            e.preventDefault();
            copyToClipboard(node.parentElement.innerText);
            node.dataset.title = 'Copied!';
            setTimeout(() => {
                node.dataset.title = 'Copy';
            }, 1000);
        });
    });

    document.body.querySelectorAll('code').forEach(node => {
        // Chrome and Firefox
        node.style.userSelect = 'text';
        // Safari
        node.style['-webkit-user-select'] = 'text';
    });

    document.addEventListener('copy', e => {
        // avoid copyright text
        if (e.clipboardData.getData('text/plain').includes('\r\n————————————————\r\n版权声明')) {
            e.preventDefault();
            e.clipboardData.setData('text/plain', document.getSelection().toString());
        }
    });
}, 1000);