Best School Cheat のソースコード

Best School Cheat

Drag OCR → send to SambaNova API → show answer in floating panel (even if OCR empty)
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// ==UserScript==
// @name         Best School Cheat
// @namespace    http://tampermonkey.net/
// @version      V12
// @description  Drag OCR → send to SambaNova API → show answer in floating panel (even if OCR empty)
// @match        *://*/*
// @grant        GM_setClipboard
// @require      https://cdn.jsdelivr.net/npm/[email protected]/dist/html2canvas.min.js
// @require      https://cdn.jsdelivr.net/npm/tesseract.js@5/dist/tesseract.min.js
// ==/UserScript==

/* 🔑 YOUR SAMBANOVA API KEY — paste it here */
const SN_API_KEY = "24ae777f-31a3-43ba-85a0-e10a7469581b";

/* 🌐 SambaNova API endpoint */
const SN_URL = "https://api.sambanova.ai/v1/chat/completions";

(function () {

let armed = false;
let startX, startY, box;
let zoomLevel = 2;
let promptType = "solve";

/* ---------- BUTTON ---------- */

function makeBtn(txt){
  let b = document.createElement("button");
  b.textContent = txt;
  Object.assign(b.style,{
    padding:"6px 8px",
    background:"#007bff",
    color:"#fff",
    border:"none",
    borderRadius:"6px",
    cursor:"pointer",
    fontSize:"12px"
  });
  return b;
}

/* ---------- COLLAPSE REOPEN BUTTON ---------- */

const reopenBtn = makeBtn("+");
Object.assign(reopenBtn.style,{
  position:"fixed",
  bottom:"20px",
  right:"20px",
  zIndex:999999,
  display:"none"
});
document.body.appendChild(reopenBtn);

/* ---------- CONTROL BAR ---------- */

const bar = document.createElement("div");
Object.assign(bar.style,{
  position:"fixed",
  bottom:"20px",
  right:"20px",
  zIndex:999998,
  padding:"8px",
  background:"rgba(20,20,20,0.9)",
  borderRadius:"8px",
  display:"flex",
  gap:"6px",
  alignItems:"center",
  color:"#fff",
  fontFamily:"system-ui, sans-serif",
  fontSize:"12px"
});

/* OCR BUTTON */

const ocrBtn = makeBtn("OCR-Drag");
ocrBtn.onclick = () => {
  armed = !armed;
  ocrBtn.style.background = armed ? "#28a745" : "#007bff";
};
bar.appendChild(ocrBtn);

/* PROMPT SELECT */

const select = document.createElement("select");
["solve","explain","summarize"].forEach(v=>{
  let o = document.createElement("option");
  o.value = v;
  o.textContent = v;
  select.appendChild(o);
});
select.onchange = () => promptType = select.value;
bar.appendChild(select);

/* ZOOM CONTROLS */

const zoomMinus = makeBtn("−");
const zoomPlus = makeBtn("+");
const zoomLabel = document.createElement("span");

function updateZoom(){
  zoomLabel.textContent = `Zoom:${zoomLevel}x`;
}
updateZoom();

zoomPlus.onclick = () => {
  zoomLevel = Math.min(5, zoomLevel + 0.5);
  updateZoom();
};

/* ---------- FULL COLLAPSE ---------- */

zoomMinus.onclick = () => {
  bar.style.display = "none";
  panel.style.display = "none";
  reopenBtn.style.display = "block";
};

reopenBtn.onclick = () => {
  bar.style.display = "flex";
  reopenBtn.style.display = "none";
};

bar.append(zoomMinus, zoomLabel, zoomPlus);
document.body.appendChild(bar);

/* ---------- ANSWER PANEL ---------- */

const panel = document.createElement("div");
Object.assign(panel.style,{
  position:"fixed",
  bottom:"70px",
  right:"20px",
  width:"360px",
  maxHeight:"60vh",
  background:"#111",
  color:"#eee",
  borderRadius:"10px",
  padding:"12px",
  display:"none",
  zIndex:999997,
  fontFamily:"system-ui, sans-serif",
  fontSize:"12px",
  overflow:"auto",
  boxShadow:"0 2px 10px rgba(0,0,0,0.5)"
});

const body = document.createElement("div");
body.style.whiteSpace = "pre-wrap";
panel.appendChild(body);
document.body.appendChild(panel);

function showPanel(text){
  body.textContent = text;
  panel.style.display = "block";
}

/* ---------- SCREENSHOT (lab() color fix) ---------- */

async function screenshot(rect){
  return await html2canvas(document.body,{
    x:rect.left,
    y:rect.top,
    width:rect.width,
    height:rect.height,
    scale:zoomLevel,
    onclone:(doc)=>{
      doc.querySelectorAll("[style*='lab(']").forEach(el=>{
        el.style.cssText = el.style.cssText.replace(/lab\([^)]*\)/g,"rgb(0,0,0)");
      });
    }
  });
}

/* ---------- PROMPT BUILDER ---------- */

function buildPrompt(text){
  if(promptType === "explain")
    return `Explain this clearly:\n\n${text}`;
  if(promptType === "summarize")
    return `Summarize this:\n\n${text}`;
  return `Solve this step-by-step:\n\n${text}`;
}

/* ---------- SAMBANOVA CALL ---------- */

async function askSambaNova(text){
  const prompt = buildPrompt(text);

  const res = await fetch(SN_URL, {
    method: "POST",
    headers: {
      "Authorization": "Bearer " + SN_API_KEY,
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      stream: false,
      model: "ALLaM-7B-Instruct-preview",
      messages: [
        {
          role: "system",
          content: "You are a helpful assistant"
        },
        {
          role: "user",
          content: prompt
        }
      ]
    })
  });

  const data = await res.json();
  const answer =
    data?.choices?.[0]?.message?.content ||
    "[No answer returned]";

  return { prompt, answer };
}

/* ---------- DRAG ---------- */

document.addEventListener("mousedown", e => {
  if(!armed) return;

  startX = e.clientX;
  startY = e.clientY;

  box = document.createElement("div");
  Object.assign(box.style,{
    position:"fixed",
    border:"2px dashed red",
    background:"rgba(255,0,0,0.15)",
    left:startX+"px",
    top:startY+"px",
    zIndex:999996
  });

  document.body.appendChild(box);
});

document.addEventListener("mousemove", e => {
  if(!armed || !box) return;

  let w = e.clientX - startX;
  let h = e.clientY - startY;

  box.style.width = Math.abs(w) + "px";
  box.style.height = Math.abs(h) + "px";
  box.style.left = (w < 0 ? e.clientX : startX) + "px";
  box.style.top = (h < 0 ? e.clientY : startY) + "px";
});

document.addEventListener("mouseup", async () => {

  if(!armed || !box) return;

  const rect = box.getBoundingClientRect();
  box.remove();
  box = null;
  armed = false;
  ocrBtn.style.background = "#007bff";

  try{

    /* ---------- OCR ---------- */

    const canvas = await screenshot(rect);
    const img = canvas.toDataURL("image/png");

    const result = await Tesseract.recognize(img,"eng",{logger:()=>{}});
    let text = (result.data.text || "").trim();

    if(!text){
      text = "[No OCR text found – sending anyway]";
    }

    showPanel(
`⏳ OCR done. Sending to SambaNova...

--- OCR TEXT ---
${text}`
    );

    /* ---------- SAMBANOVA ---------- */

    const { prompt, answer } = await askSambaNova(text);

    GM_setClipboard(prompt);

    showPanel(
`✅ OCR Copied
✅ Prompt Copied
✅ SambaNova Answer Received

--- OCR TEXT ---
${text}

--- PROMPT SENT TO SAMBANOVA ---
${prompt}

--- SAMBANOVA ANSWER ---
${answer}`
    );

  } catch(err){
    showPanel("[ERROR] " + String(err));
  }

});

})();