(() => {
  const FIREBASE_ENDPOINT = "https://bcrapi-default-rtdb.firebaseio.com";
  const lastResults = {}; 
  const updateLogs = [];  // log hiện tại trên UI
  const allLogs = [];     // lưu tất cả lịch sử kể cả khi clear

  // === Firebase helper ===
  async function getFromFirebase(tableName) {
    try {
      const url = `${FIREBASE_ENDPOINT}/bcr/${tableName}.json`;
      const res = await fetch(url);
      return res.ok ? await res.json() : null;
    } catch {
      return null;
    }
  }

  async function saveToFirebase(table) {
    try {
      const payload = { 
        table_name: table.table_name || "", 
        cau: table.goodRoad || "", 
        results: table.result || "" 
      };

      const curr = payload.results;
      if (!curr) return;

      const prevCache = lastResults[table.table_name] || "";
      const prevFbData = await getFromFirebase(table.table_name);
      const prevFirebase = prevFbData?.results || "";

      if (curr === prevCache || curr === prevFirebase) {
        safeLog(`⏩ Bỏ qua (trùng dữ liệu) ${table.table_name}`);
        return;
      }

      lastResults[table.table_name] = curr;
      const url = `${FIREBASE_ENDPOINT}/bcr/${table.table_name}.json`;
      const res = await fetch(url, {
        method: "PUT",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(payload)
      });
      if (!res.ok) throw new Error(res.statusText);

      const log = {
        time: new Date().toLocaleTimeString(),
        table: table.table_name,
        old: prevFirebase || "(trống)",
        new: curr
      };

      updateLogs.unshift(log);
      allLogs.unshift(log);

      if (updateLogs.length > 50) updateLogs.splice(50);

      renderMenu();
      safeLog(`✅ Firebase (${table.table_name}): ${curr}`);
    } catch (err) {
      safeLog(`${table.table_name} lỗi Firebase: ${err.message}`);
    }
  }

  // === Menu ===
  function renderMenu(showAll = false) {
    let menu = document.getElementById("firebase-update-menu");
    if (!menu) {
      menu = document.createElement("div");
      menu.id = "firebase-update-menu";
      menu.style = `
        position:fixed;top:10px;right:10px;
        background:rgba(0,0,0,0.85);color:#fff;
        padding:15px;border-radius:10px;
        z-index:999999;font-size:13px;font-family:monospace;
        max-height:90vh;overflow-y:auto;min-width:280px;`;
      document.body.appendChild(menu);
    }

    const logs = showAll ? allLogs : updateLogs;

    let html = `<div style="font-weight:bold;font-size:15px;margin-bottom:8px;">
      🔥 Firebase Updates (FULL bàn + table_name)
    </div>`;
    html += `<button id="toggleLogsBtn" style="margin-bottom:10px;padding:5px 10px;border:none;border-radius:5px;background:#444;color:#fff;cursor:pointer;">
      ${showAll ? "⬅ Quay lại (chỉ 50 log gần)" : "📜 Xem toàn bộ lịch sử"}
    </button>`;
    html += `<div style="margin-bottom:10px;">Lịch sử cập nhật (${logs.length}):</div>`;

    for (const log of logs) {
      html += `
        <div style="border-bottom:1px solid #555;padding:5px 0;">
          [${log.time}] <b>${log.table}</b><br>
          <span style="color:#ff6666">Cũ:</span> ${log.old}<br>
          <span style="color:#66ff66">Mới:</span> ${log.new}
        </div>
      `;
    }

    menu.innerHTML = html;
    document.getElementById("toggleLogsBtn").onclick = () => renderMenu(!showAll);
  }

  // === Handle data ===
  function handleData(data) {
    if (!data?.data) return;
    for (const table of data.data) {
      saveToFirebase(table);
    }
  }

  // === Hook XHR ===
  const origOpen = XMLHttpRequest.prototype.open;
  const origSend = XMLHttpRequest.prototype.send;
  XMLHttpRequest.prototype.open = function (method, url, ...rest) {
    this._url = url;
    return origOpen.apply(this, [method, url, ...rest]);
  };
  XMLHttpRequest.prototype.send = function (body) {
    this.addEventListener("load", function () {
      try {
        if (this._url.includes("/baccarat/getnewresult")) {
          let parsed;
          try { parsed = JSON.parse(this.responseText); } catch { parsed = null; }
          if (parsed) {
            safeLog("📥 Nhận response mới từ /baccarat/getnewresult");
            handleData(parsed);
          }
        }
      } catch (e) { safeLog("❌ Hook error: " + e); }
    });
    return origSend.apply(this, [body]);
  };

  // === Spam check (polling) ===
  setInterval(async () => {
    try {
      const res = await fetch("/baccarat/getnewresult", { method: "POST" });
      if (res.ok) {
        const data = await res.json();
        handleData(data);
      }
    } catch {}
  }, 5000); // check mỗi 5s

  // === Safe log (chặn spam getCase) ===
  const origLog = console.log;
  function safeLog(...args) {
    const str = args.join(" ");
    if (str.startsWith("get Case:")) return; // chặn log spam
    origLog.apply(console, args);
  }
  console.log = safeLog;

  // === Auto clear console định kỳ ===
  setInterval(() => {
    console.clear();
    if (updateLogs.length > 20) updateLogs.splice(20);
    renderMenu();
    safeLog("🧹 Đã clear console + giữ 20 log gần nhất (toàn bộ log lưu ở chế độ xem lịch sử)");
  }, 3 * 60 * 1000);

  safeLog("🔥 Script chạy: Hook + Polling + Firebase (FULL bàn, thêm table_name, anti-spam, nút xem lịch sử)");
})();