Get hovered liveroom ids: These guys can't use <a> like normal people

livegetroomundercursorurl.user.js

// ==UserScript==
// @name         Get hovered liveroom ids
// @namespace    io.github.dobby233liu.userscripts.bilibili.livegetroomundercursorurl
// @version      1.1.1
// @description  These guys can't use <a> like normal people
// @author       Liu Wenyuan
// @match        https://live.bilibili.com/*
// @grant        GM_registerMenuCommand
// ==/UserScript==

(function() {
    "use strict";

    const tmplGen = ((cb, dataType) => {
        async function perform() {
            const hoveredElems = Array.from(document.querySelectorAll(":hover")).reverse();
            for (const elem of hoveredElems) {
                if (!elem.dataset.report) continue;

                let reportData = null;
                try {
                    reportData = JSON.parse(elem.dataset.report);
                } catch (err) {
                    console.warn(err);
                    continue;
                }

                const url = cb(reportData);
                if (!url) return;
                try { await navigator.clipboard.writeText(url); } catch (err) { console.warn(err); }
                alert(url);
                return true;
            }
        }
        async function performAbsorbErrors() {
            try {
                return await perform();
            } catch (err) {
                console.warn(err);
            }
        }
        function sleep(t) {
            return new Promise(function(r, _) {
                setTimeout(r, t);
            });
        }
        return async function() {
            if (await performAbsorbErrors()) return;
            await sleep(1000);
            if (await performAbsorbErrors()) return;
            alert(`No ${dataType} found`);
        }
    });

    GM_registerMenuCommand("Get room url", tmplGen((reportData) => {
        if (!reportData.room_id) return;

        return `https://live.bilibili.com/${reportData.room_id}`;
    }, "room id"));

    GM_registerMenuCommand("Get up url", tmplGen((reportData) => {
        if (!reportData.up_id) return;

        return `https://space.bilibili.com/${reportData.up_id}`;
    }, "up id"));

    GM_registerMenuCommand("Get area url", tmplGen((reportData) => {
        function isAreaIdNull(id) { return !id || id == "0"; }
        const urlObj = new URL("https://live.bilibili.com/p/eden/area-tags");
        let useSubareaId = true;
        if (!isAreaIdNull(reportData.parent_area_id)) {
            useSubareaId = false;
            urlObj.searchParams.set("parentAreaId", reportData.parent_area_id);
        } else if (!isAreaIdNull(reportData.area_id)) {
            urlObj.searchParams.set("parentAreaId", reportData.area_id);
        }
        if (useSubareaId && !isAreaIdNull(reportData.subarea_id)) {
            urlObj.searchParams.set("areaId", reportData.subarea_id);
        } else if (!isAreaIdNull(reportData.area_id)) {
            urlObj.searchParams.set("areaId", reportData.area_id);
        }
        if (urlObj.search == "") return;
        return urlObj.href;
    }, "area id(s)"));
})();