Tangolf の結果コピー

tangolf_copy.user.js

// ==UserScript==
// @name         Tangolf の結果コピー
// @namespace    hen.acho.co
// @match        https://tangolf.hatelabo.jp/
// @version      1.230403
// @description  ツイートボタンをコピーボタンにします。
// @downloadURL  https://gist.github.com/pacochi/0568e742d53902f99f533aa1b4ed51e2/raw/tangolf_copy.user.js
// @run-at       document-idle
// @grant        none
// ==/UserScript==

(() => {

	const getTweetButton = (node = document) => node?.querySelector?.('a[class^="_shareButton_"]');
	const getResetButton = (node = document) => node?.querySelector?.('button[class^="_resetButton_"]');
	const observeBody = e => {

		new MutationObserver((mutations, observer) => {

			if (
			 mutations.reduce((nodes, mutation) => nodes.concat([...mutation.addedNodes]), [])
			 .find(node => getTweetButton(node))
			) {

				observer.disconnect();
				replaceButton();

			}

		}).observe(document.body, { childList: true, subtree: true });

	};
	const addObserver = () => {

		const resetButton = getResetButton();
		resetButton.addEventListener('click', observeBody, {once: true});

	};
	const replaceButton = () => {

		const tweetButton = getTweetButton();

		tweetButton.innerText = 'スコアをコピー！';
		tweetButton.addEventListener('click', copyResult);
		addObserver();

	};
	const copyResult = e => {

		const params = (new URL(e.target.href)).searchParams;
		const result = params.get('text') ?? '';
		const hash = params.get('hashtags') ? '\n#' + params.get('hashtags').replace(/,/, ' #') : '';
		const url = params.get('url') ? '\n' + params.get('url') : '';
		navigator.clipboard.writeText(result + url + hash);
		e.target.innerText = 'スコアをコピー🆗';
		e.stopPropagation();
		e.preventDefault();

	};

	if (!getTweetButton()) observeBody();
	 else replaceButton();

})();