// ==UserScript==
// @name         网页复制成Markdown
// @description  获取部分页面源代码并复制为 Markdown 格式
// @author       shenfangda
// @license      MIT
// @version      1.0.0
// @match        https://*.shenfangda.cn/*
// @grant        none

// @namespace https://greasyfork.org/users/1414941
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    const BUTTON_STYLE = `
        .button-lgcm {
            outline: none !important;
            cursor: pointer;
            line-height: 1.25;
            position: relative;
            display: flex;
            margin-left: -.0625rem;
            padding: .5rem .75rem;
            color: #fff !important;
            border: .0625rem solid #dee2e6;
            font-size: 15px;
            font-weight: unset;
            min-width: 36px;
            height: 36px;
            margin: 0 3px;
            border-radius: 100px !important;
            align-items: center;
            justify-content: center;
            transition: all .3s;
            background-color: #5e72e4;
        }
        .button-lgcm:hover {
            box-shadow: 0 7px 14px rgba(50,50,93,.1), 0 3px 6px rgba(0,0,0,.08);
            transform: translateY(-1px);
        }
    `;

    // 创建按钮的通用函数
    function createButton(getContentFn) {
        const button = document.createElement('button');
        button.textContent = '复制Md';
        button.classList.add('button-lgcm');
        button.style.position = 'absolute';
        button.style.top = '100px';
        button.style.right = '100px';

        // 滚动时更新按钮位置
        window.addEventListener('scroll', () => {
            button.style.top = `${100 + window.scrollY}px`;
        });

        // 点击复制内容
        button.addEventListener('click', async () => {
            try {
                const content = await getContentFn();
                await navigator.clipboard.writeText(content);
                alert('复制成功');
            } catch (error) {
                console.error('复制失败:', error);
                alert('复制失败，请检查控制台');
            }
        });

        document.body.appendChild(button);
    }

    // 页面类型对应的内容获取函数
    const pageHandlers = {
        user: () => _feInstance.currentData.user.introduction,
        blog: async () => {
            const res = await fetch(`/api/blog/detail/${BlogGlobals.blogID}`);
            const data = await res.json();
            return data.data.Content;
        },
        contest: () => _feInstance.currentData.contest.description,
        training: () => _feInstance.currentData.training.description
    };

    // URL 判断逻辑
    function shouldRunHandler(url, type) {
        const parsedUrl = new URL(url);
        const path = parsedUrl.pathname.split('/');

        switch (type) {
            case 'blog':
                if (url.includes('blog') && !url.includes('Admin') && !url.includes('admin')) {
                    if (url.includes('org')) {
                        return path.length >= 2 && path[1] !== '';
                    }
                    return path.length >= 4;
                }
                return false;
            case 'user':
                return url.includes('user') && !url.includes('notification');
            case 'contest':
                return url.includes('contest') && !url.includes('list') && !url.includes('edit') && !url.includes('contestId');
            case 'training':
                return url.includes('training') && !url.includes('edit') && !url.includes('list');
            default:
                return false;
        }
    }

    // 初始化样式
    const style = document.createElement('style');
    style.textContent = BUTTON_STYLE;
    document.head.appendChild(style);

    // 主逻辑
    const url = window.location.href;
    Object.entries(pageHandlers).forEach(([type, getContentFn]) => {
        if (shouldRunHandler(url, type)) {
            window.addEventListener('load', () => createButton(getContentFn));
        }
    });
})();