ShitJournal PDF Tools

Add read and download buttons for ShitJournal PDFs
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// ==UserScript==
// @name         ShitJournal PDF Tools
// @match        https://shitjournal.org/preprints/*
// @grant        GM_download
// @license MIT
// @description  Add read and download buttons for ShitJournal PDFs
// @description:zh-CN  在 ShitJournal 预印本页面添加 PDF 阅读和下载按钮
// @version 0.0.1.20260308164434
// @namespace https://greasyfork.org/users/789884
// ==/UserScript==

(function() {
    'use strict';

    const match = location.pathname.match(/\/preprints\/([0-9a-f-]+)/);
    if (!match) return;

    const uuid = match[1];
    const pdfUrl = `https://files.shitjournal.org/${uuid}.pdf`;

    // 按钮容器
    const box = document.createElement("div");

    Object.assign(box.style, {
        position: "fixed",
        bottom: "20px",
        right: "20px",
        display: "flex",
        gap: "8px",
        zIndex: 999999
    });

    // 阅读按钮
    const readBtn = document.createElement("a");
    readBtn.textContent = "📖 阅读 PDF";
    readBtn.href = pdfUrl;
    readBtn.target = "_blank";

    Object.assign(readBtn.style, {
        padding: "10px 16px",
        background: "#4caf50",
        color: "white",
        textDecoration: "none",
        borderRadius: "6px",
        fontSize: "14px"
    });

    // 下载按钮
    const downloadBtn = document.createElement("button");
    downloadBtn.textContent = "⬇ 下载 PDF";

    Object.assign(downloadBtn.style, {
        padding: "10px 16px",
        background: "#1976d2",
        color: "white",
        border: "none",
        borderRadius: "6px",
        cursor: "pointer",
        fontSize: "14px"
    });

    downloadBtn.onclick = () => {
        GM_download({
            url: pdfUrl,
            name: uuid + ".pdf"
        });
    };

    box.appendChild(readBtn);
    box.appendChild(downloadBtn);
    document.body.appendChild(box);

})();