Greasy Fork is available in English.
Get notified when your friend solves a problem on codeforces. 想知道你的同学有多卷吗？
当前为
// ==UserScript==
// @name CF notification
// @namespace https://github.com/platelett/script
// @version 0.1
// @description Get notified when your friend solves a problem on codeforces. 想知道你的同学有多卷吗？
// @author platelet
// @match https://codeforces.com/problemset/status?friends=on
// @icon https://www.google.com/s2/favicons?sz=64&domain=codeforces.com
// @license MIT
// @source https://github.com/platelett/script/blob/main/CF%20notification
// @grant none
// ==/UserScript==
// Open the page https://codeforces.com/problemset/status?friends=on script takes effect.
(function() {
'use strict';
onload = () => {
const interval = 1000 * 120;
Notification.requestPermission(() => {
if(document.querySelector("#header > div.lang-chooser > div:nth-child(2) > a:nth-child(2)").textContent == "Register") {
alert("You are not logged in and cannot receive notifications.");
return;
}
var parser = new DOMParser();
var last = document.querySelector("#pageContent > div.datatable > div:nth-child(6) > table > tbody > tr > td.id-cell.dark.left > a").textContent;
var running = new Set();
var ID = setInterval(async () => {
try {
var now;
for(var page = 1;; page++) {
var list = parser.parseFromString(await (await fetch("https://codeforces.com/problemset/status/page/" + page + "?friends=on")).text(), "text/html").querySelectorAll("#pageContent > div.datatable > div:nth-child(6) > table > tbody > tr:not(.first-row)");
if(!list.length) throw "Invalid page";
if(page == 1) now = list[0].children[0].textContent.trim();
for(var submission of list) {
var info = [];
for(var i of submission.children) if(i.children[0]) info.push(i.children[0].textContent.trim());
if(info[0] <= last && (!running.size || info[0] < Math.min.apply(null, [...running]))) { last = now; return; }
var visited = info[0] <= last;
if(running.has(info[0])) running.delete(info[0]), visited = false;
if(visited) continue;
if(info[4] == "Accepted") new Notification(info[2] + " has solved " + info[3] + ".");
if(info[4].startsWith("Running on test")) running.add(info[0]);
}
}
} catch(err) {
new Notification("Error happened! Please check the console.");
console.log(err), clearInterval(ID);
}
}, interval);
});
}
})();