// ==UserScript==
// @name         B站哔哩哔哩已注销账号存档检测
// @namespace    http://tampermonkey.net/
// @version      0.6
// @description  B站已注销账号存档查看，当您在观看视频中遇到显示「账号已注销」的用户时，只需将鼠标悬停在该文字上，即可快速获取关键信息并直达历史投稿存档。在"已关注"列表里搜“注销”也可查看你关注人哪些账号已注销，用于查看这些人可能是谁，鼠标移动到“账号已注销”文字上即可。
// @author       HiKey
// @match        *://*.bilibili.com/*
// @icon         https://www.bilibili.com/favicon.ico
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let tooltip = null;
    let bufferArea = 50;

    function createTooltip(uid, x, y) {
        if (tooltip) tooltip.remove();

        tooltip = document.createElement('div');
        Object.assign(tooltip.style, {
            position: 'fixed',
            background: '#fff',
            border: '1px solid #ccc',
            padding: '8px',
            borderRadius: '4px',
            boxShadow: '0 2px 8px rgba(0,0,0,0.1)',
            zIndex: '999999',
            left: `${x}px`,
            top: `${y}px`
        });

        const link = `https://www.biliplus.com/api/do.php?act=search&o=pubdate&n=30&p=1&source=biliplus&word=%40m%3D${uid}`;
        tooltip.innerHTML = `<a href="${link}" target="_blank" style="color: #00a1d6; text-decoration: none;">查看历史投稿 (UID:${uid})</a>`;

        document.body.appendChild(tooltip);
        document.addEventListener('mousemove', trackMouseMovement);
        return tooltip;
    }

    function trackMouseMovement(e) {
        if (!tooltip) return;

        const rect = tooltip.getBoundingClientRect();
        const safeArea = {
            left: rect.left - bufferArea,
            right: rect.right + bufferArea,
            top: rect.top - bufferArea,
            bottom: rect.bottom + bufferArea
        };

        if (
            e.clientX < safeArea.left ||
            e.clientX > safeArea.right ||
            e.clientY < safeArea.top ||
            e.clientY > safeArea.bottom
        ) {
            tooltip.remove();
            tooltip = null;
            document.removeEventListener('mousemove', trackMouseMovement);
        }
    }

    function extractUID(url) {
        const fullUrl = url.startsWith('//') ? `https:${url}` : url;
        const match = fullUrl.match(/space\.bilibili\.com\/(\d+)/);
        return match ? match[1] : null;
    }

    document.addEventListener('mouseover', function(e) {
        const target = e.target;
        let uid = null;

        // 新版用户信息结构检测
        if (target.matches('div.vui_ellipsis.multi-mode') && target.textContent.trim() === '账号已注销') {
            const parentLink = target.closest('a[href*="space.bilibili.com/"]');
            if (parentLink) uid = extractUID(parentLink.href);
        }
        // 旧版用户信息结构检测
        else if (target.matches('a.up-name') && target.textContent.includes('账号已注销')) {
            uid = extractUID(target.href);
        }

        if (uid) {
            const xPos = Math.min(e.clientX, window.innerWidth - 200);
            const yPos = Math.min(e.clientY, window.innerHeight - 50);
            createTooltip(uid, xPos, yPos);
        }
    });

    window.addEventListener('scroll', () => {
        if (tooltip) {
            tooltip.remove();
            tooltip = null;
        }
    });
})();