// ==UserScript==
// @name         检测网址跳转by小楠
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Detect specific text patterns on mouse selection and prompt with minimal delay.
// @match        *://*/*
// @grant        none
// @downloadURL none
// ==/UserScript==

let isSelecting = false;
let selectedText = '';
let hasPattern = false;
let showedPopup = false;

document.addEventListener('mousedown', function() {
    isSelecting = true;
});

document.addEventListener('mouseup', function() {
    isSelecting = false;
    if (window.getSelection().toString()) {
        selectedText = window.getSelection().toString();
        hasPattern = selectedText.includes('http://') || selectedText.includes('https://') || selectedText.includes('www.');
    } else {
        selectedText = '';
        hasPattern = false;
    }
});

let checkAndPrompt = function() {
    if (hasPattern &&!showedPopup) {
        let urlRegex = /(https?:\/\/[^\s]+)/g;
        let urls = selectedText.match(urlRegex);
        if (urls) {
            let urlToCopy = urls[0];
            navigator.clipboard.writeText(urlToCopy).then(() => {
                let confirmMessage = `是否要跳转 ${urlToCopy}？`;
                if (confirm(confirmMessage)) {
                    window.location.href = urlToCopy;
                } else {
                    showedPopup = true;
                }
            });
        }
    }
};

document.addEventListener('selectionchange', checkAndPrompt);
// Also check immediately after mouseup in case selection didn't change but needs to be checked.
document.addEventListener('mouseup', checkAndPrompt);