Automatically scroll up and copy chat to clipboard.
// ==UserScript==
// @name JanitorAI Chat Copier
// @namespace https://greasyfork.org/users/your-name
// @version 1.4
// @description Automatically scroll up and copy chat to clipboard.
// @match https://janitorai.com/chats/*
// @match https://www.janitorai.com/chats/*
// @run-at document-idle
// @grant none
// @license MIT
// ==/UserScript==
(() => {
"use strict";
const STEP_MS = 200;
const PAGE_FRAC = 0.9;
const UP_CAP = 800;
const MIN_LEN = 3;
const NAME_MAX = 60;
const DROP_PAT = /^(typing|loading|thinking|processing|\.\.\.)$/i;
const BTN_ID = "ja-copy-chat-btn";
const ZW_RE = /\u200b|\u200c|\u200d|\ufeff/g;
const stripZW = s => s.replace(ZW_RE, "");
const tidy = s => s ? stripZW(s).replace(/\r/g,"").replace(/\s+\n/g,"\n").replace(/\n{3,}/g,"\n\n").trim() : "";
const normKey = s => stripZW(s).toLowerCase().replace(/\s+/g,"");
const msgKey = (name, body) => normKey((name||"")+"::"+body);
const fmt = n => n.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
const MSG_WRAPPER_SEL = `
[data-message-id],
[data-testid*="message"],
[class*="message"],
[class*="Message"],
[class*="chatline"],
[class*="chatLine"],
[class*="bubble"],
article,
li[role="article"]
`;
const NAME_SEL = `
[data-testid*="name"],
[data-testid*="author"],
[data-author],
[data-user-name],
[data-username],
[data-speaker],
[class*="name"],
[class*="Name"],
[class*="author"],
[class*="Author"],
[class*="username"],
header,
h1,h2,h3,strong,b
`;
const BODY_SEL = `
[data-testid*="message-text"],
[data-testid*="content"],
.message-text,
.msg-text,
.prose,
.markdown,
.content
`;
function isVisible(el){
if(!(el instanceof Element)) return false;
const st=getComputedStyle(el);
if(st.display==="none"||st.visibility==="hidden"||+st.opacity===0) return false;
const r=el.getBoundingClientRect();
if(!r || r.height<12 || r.width<2) return false;
const vh=window.innerHeight;
if(r.bottom < -vh*0.25) return false;
if(r.top > vh*1.25) return false;
return true;
}
function findScrollEl(){
const cands=[...document.querySelectorAll("div,main,section,article")];
let best=null,score=-1;
for(const el of cands){
const st=getComputedStyle(el);
if(!/(auto|scroll)/i.test(st.overflowY)) continue;
const h=el.scrollHeight-el.clientHeight;
if(h<=0) continue;
const s=h + el.querySelectorAll("*").length;
if(s>score){score=s;best=el;}
}
return best || document.scrollingElement || document.body;
}
function extractName(wrapper){
const label = wrapper.querySelector(NAME_SEL);
if(label){
const n = tidy(label.innerText || label.textContent || "");
if(n && n.length <= NAME_MAX && !DROP_PAT.test(n)) return n;
}
const raw = wrapper.innerText || wrapper.textContent || "";
if(!raw) return "";
const lines = raw.split(/\n+/).map(l=>l.trim()).filter(Boolean);
if(lines.length>1 && lines[0].length>0 && lines[0].length<=NAME_MAX){
if(lines[1].length >= MIN_LEN) return lines[0];
}
return "";
}
function extractBody(wrapper, nameUsed){
const inner = wrapper.querySelector(BODY_SEL);
let raw;
if(inner && inner!==wrapper){
raw = inner.innerText || inner.textContent || "";
}else{
raw = wrapper.innerText || wrapper.textContent || "";
}
raw = tidy(raw||"");
if(nameUsed){
const esc = nameUsed.replace(/[.*+?^${}()|[\]\\]/g,'\\$&');
raw = raw.replace(new RegExp("^"+esc+"\\s*\\n?"),"").trim();
}
return raw;
}
let scrollContainer=null;
function captureStep(store, step, winScroll){
if(document.hidden) return;
const nodes=scrollContainer.querySelectorAll(MSG_WRAPPER_SEL);
for(const w of nodes){
if(!isVisible(w)) continue;
let id = w.getAttribute("data-message-id") ||
w.getAttribute("data-id") ||
w.id ||
null;
let name = extractName(w);
const body = tidy(extractBody(w, name));
if(body.length < MIN_LEN) continue;
if(DROP_PAT.test(body)) continue;
if(!name) name="";
const key = id ? ("id:"+id) : msgKey(name, body);
if(store.has(key)) continue;
store.set(key, {name, body, step});
}
}
async function captureAll(){
scrollContainer = findScrollEl();
const winScroll=(scrollContainer===document.scrollingElement||scrollContainer===document.body);
const getTop = ()=>winScroll?window.scrollY:scrollContainer.scrollTop;
const setTop = v =>winScroll?window.scrollTo(0,v):(scrollContainer.scrollTop=v);
const getStep= ()=> (winScroll?window.innerHeight:scrollContainer.clientHeight)*PAGE_FRAC;
const store=new Map();
let step=0;
captureStep(store, step++, winScroll);
for(let i=0;i<UP_CAP;i++){
const before=getTop();
if(before<=0) break;
const next=Math.max(0,before-getStep());
setTop(next);
// eslint-disable-next-line no-await-in-loop
await new Promise(r=>setTimeout(r,STEP_MS));
captureStep(store, step++, winScroll);
const after=getTop();
if(after===before||after===0) break;
}
// We captured bottom->top; earliest messages seen last = highest step
const arr=[...store.values()].sort((a,b)=>b.step-a.step);
const lines=[];
for(const m of arr){
lines.push(m.name ? `${m.name}: ${m.body}` : m.body);
}
// fallback if nothing
if(!lines.length){
const raw = tidy(scrollContainer.innerText||"");
if(raw) lines.push(raw);
}
return lines;
}
async function copyOut(str){
const msg = `Copied Chat with ${fmt(str.length)} characters in total.`;
try{
await navigator.clipboard.writeText(str);
alert(msg);
}catch(_){
const ta=document.createElement("textarea");
ta.value=str;
ta.style.position="fixed";ta.style.top="-9999px";
document.body.appendChild(ta);ta.focus();ta.select();
document.execCommand("copy");
document.body.removeChild(ta);
alert(msg + " (fallback).");
}
}
async function handleCopy(){
const btn=document.getElementById(BTN_ID);
if(btn){btn.disabled=true;btn.textContent="Capturing…";}
const lines=await captureAll();
const out=lines.join("\n\n");
await copyOut(out);
if(btn){btn.disabled=false;btn.textContent="Copy Chat";}
}
function addButton(){
let btn=document.getElementById(BTN_ID);
if(btn) return;
btn=document.createElement("button");
btn.id=BTN_ID;
btn.textContent="Copy Chat";
btn.style.cssText=`
position:fixed;
bottom:12px;
right:12px;
z-index:2147483647;
padding:6px 10px;
font-size:13px;
cursor:pointer;
background:#2d72d9;
color:#fff;
border:none;
border-radius:4px;
`;
btn.addEventListener("click",handleCopy);
document.body.appendChild(btn);
}
if(document.readyState==="loading"){
document.addEventListener("DOMContentLoaded",addButton,{once:true});
}else{
addButton();
}
})();