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cc-solver
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CC Solver</title>
  <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
  <script src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js"></script>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f0f2f5; color: #333; min-height: 100vh; }
    .container { max-width: 960px; margin: 0 auto; padding: 20px; }
    h1 { text-align: center; padding: 20px 0 6px; color: #1a1a2e; font-size: 1.8em; }
    .subtitle { text-align: center; color: #666; margin-bottom: 24px; font-size: 0.9em; }

    .card { background: #fff; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); padding: 24px; margin-bottom: 20px; }
    .card-title { font-size: 0.95em; font-weight: 700; color: #1a1a2e; margin-bottom: 12px; }

    /* Input area */
    .input-mode-toggle { display: flex; gap: 0; margin-bottom: 12px; background: #f0f0f0; border-radius: 8px; overflow: hidden; }
    .input-mode-toggle button { flex: 1; padding: 8px 16px; border: none; cursor: pointer; font-size: 13px; font-weight: 600; background: #f0f0f0; color: #666; transition: all 0.15s; }
    .input-mode-toggle button.active { background: #4361ee; color: #fff; }

    textarea { width: 100%; min-height: 150px; border: 1px solid #ddd; border-radius: 8px; padding: 12px; font-size: 14px; font-family: inherit; resize: vertical; line-height: 1.6; }
    textarea:focus { outline: none; border-color: #4361ee; box-shadow: 0 0 0 3px rgba(67,97,238,0.15); }

    .file-drop { border: 2px dashed #ccc; border-radius: 8px; padding: 32px 16px; text-align: center; color: #999; cursor: pointer; transition: border-color 0.2s, background 0.2s; }
    .file-drop:hover, .file-drop.dragover { border-color: #4361ee; background: #f5f7ff; }
    .file-drop input[type="file"] { display: none; }
    .file-list { margin-top: 8px; font-size: 13px; }
    .file-list .file-item { display: flex; justify-content: space-between; padding: 4px 0; }
    .file-list .file-item .remove { color: #e74c3c; cursor: pointer; font-weight: 700; }

    .btn-row { display: flex; gap: 12px; margin-top: 12px; }
    .btn { padding: 10px 28px; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; font-weight: 600; transition: all 0.15s; }
    .btn-primary { background: #4361ee; color: #fff; }
    .btn-primary:hover:not(:disabled) { background: #3a56d4; }
    .btn-primary:disabled { background: #a0b0f0; cursor: not-allowed; }
    .btn-secondary { background: #e8e8e8; color: #333; }
    .btn-secondary:hover { background: #d8d8d8; }
    .btn-download { background: #2ecc71; color: #fff; padding: 6px 14px; font-size: 12px; border-radius: 6px; text-decoration: none; }
    .btn-download:hover { background: #27ae60; }

    /* Config */
    .config-row { display: flex; gap: 8px; margin-bottom: 8px; align-items: center; }
    .config-row label { font-size: 13px; color: #666; min-width: 90px; }
    .config-row input { flex: 1; padding: 6px 10px; border: 1px solid #ddd; border-radius: 6px; font-size: 13px; font-family: monospace; }
    .config-row button { padding: 6px 14px; border: none; border-radius: 6px; background: #4361ee; color: #fff; font-size: 12px; cursor: pointer; white-space: nowrap; }

    /* Task list */
    .task-list { max-height: 400px; overflow-y: auto; }
    .task-item { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid #f0f0f0; gap: 8px; }
    .task-item:last-child { border-bottom: none; }
    .task-name { font-weight: 600; font-size: 14px; }
    .task-preview { font-size: 12px; color: #888; max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .task-meta { display: flex; align-items: center; gap: 8px; }
    .task-delete { cursor: pointer; font-size: 14px; color: #ccc; font-weight: 700; transition: color 0.15s; }
    .task-delete:hover { color: #e74c3c; }
    .badge { font-size: 11px; padding: 2px 8px; border-radius: 10px; font-weight: 600; }
    .badge-pending { background: #fff3cd; color: #856404; }
    .badge-running { background: #cce5ff; color: #004085; }
    .badge-complete { background: #d4edda; color: #155724; }
    .badge-error { background: #f8d7da; color: #721c24; }

    /* Modal */
    .modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 100; align-items: center; justify-content: center; }
    .modal-overlay.visible { display: flex; }
    .modal { background: #fff; border-radius: 12px; max-width: 800px; width: 90%; max-height: 80vh; overflow-y: auto; padding: 24px; }
    .modal h2 { font-size: 1.1em; margin-bottom: 12px; }
    .modal .result-content { line-height: 1.7; }
    .modal .result-content table { border-collapse: collapse; width: 100%; margin: 12px 0; }
    .modal .result-content th, .modal .result-content td { border: 1px solid #ddd; padding: 8px 12px; text-align: left; }
    .modal .result-content th { background: #f5f5f5; }
    .modal .result-content pre { background: #f8f8f8; padding: 12px; border-radius: 6px; overflow-x: auto; font-size: 13px; }
    .modal .result-content code { background: #f0f0f0; padding: 1px 4px; border-radius: 3px; font-size: 13px; }
    .modal .result-content pre code { background: none; padding: 0; }
    .modal .result-content blockquote { border-left: 3px solid #4361ee; padding-left: 12px; color: #555; margin: 8px 0; }
    .modal .log-console { background: #1e1e2e; color: #cdd6f4; border-radius: 8px; padding: 12px; max-height: 200px; overflow-y: auto; font-family: monospace; font-size: 12px; line-height: 1.5; white-space: pre-wrap; word-break: break-all; }

    .error-msg { background: #f8d7da; color: #721c24; padding: 10px; border-radius: 8px; margin-top: 8px; display: none; font-size: 13px; }
    .error-msg.visible { display: block; }

    /* Per-task progress */
    .task-files { display: flex; gap: 4px; margin-top: 4px; }
    .task-file-step { font-size: 10px; padding: 1px 6px; border-radius: 4px; background: #e8e8e8; color: #999; }
    .task-file-step.done { background: #d4edda; color: #155724; font-weight: 600; }
    .task-file-step.current { background: #cce5ff; color: #004085; font-weight: 600; animation: pulse 1.5s infinite; }

    /* Workspace file tabs */
    .ws-tab:hover { background: #e0e0e0 !important; }

    /* Math formulas */
    .math-display { overflow-x: auto; margin: 12px 0; padding: 8px 0; text-align: center; }
  </style>
</head>
<body>
  <div class="container">
    <h1>CC Solver</h1>
    <p class="subtitle">Multi-agent physics problem solver</p>

    <!-- Config -->
    <div class="card">
      <div class="card-title">Solver Config</div>
      <div class="config-row">
        <label>Repo URL</label>
        <input type="text" id="solver-url" placeholder="https://github.com/Usami-Mira/CC_Integrater/raw/refs/heads/main/">
        <button onclick="updateConfig()">Update</button>
      </div>
      <div class="config-row">
        <label>Token</label>
        <input type="password" id="solver-token" placeholder="Enter password">
      </div>
      <p style="font-size:12px;color:#888;margin-top:8px;">Model 和 timeout 由仓库 config.json 控制。</p>
    </div>

    <!-- Input -->
    <div class="card">
      <div class="card-title">New Task</div>
      <div class="input-mode-toggle">
        <button id="mode-text" class="active" onclick="setInputMode('text')">Text Input</button>
        <button id="mode-file" onclick="setInputMode('file')">Upload Files</button>
      </div>

      <!-- Config override -->
      <details style="margin-bottom:12px;">
        <summary style="cursor:pointer;font-size:13px;font-weight:600;color:#666;">Custom Config (config.json)</summary>
        <textarea id="config-input" placeholder='Loading config...' style="min-height:80px;margin-top:8px;font-family:monospace;font-size:13px;"></textarea>
      </details>

      <!-- Private mode -->
      <div style="display:flex;align-items:center;gap:8px;margin-bottom:12px;">
        <label style="font-size:13px;font-weight:600;color:#666;cursor:pointer;display:flex;align-items:center;gap:6px;">
          <input type="checkbox" id="private-mode" style="width:16px;height:16px;cursor:pointer;">
          Private Mode
        </label>
        <span id="secret-display" style="font-size:12px;color:#aaa;font-family:monospace;display:none;"></span>
      </div>

      <div id="input-text-area">
        <textarea id="problem-input" placeholder="Paste your physics problem here..."></textarea>
        <div class="btn-row">
          <button class="btn btn-primary" id="submit-btn" onclick="submitText()">Solve</button>
        </div>
      </div>

      <div id="input-file-area" style="display:none;">
        <div class="file-drop" id="file-drop" onclick="document.getElementById('file-input').click()">
          <p>Click or drag <strong>.md</strong> files here</p>
          <input type="file" id="file-input" accept=".md" multiple>
        </div>
        <div class="file-list" id="file-list"></div>
        <div class="btn-row">
          <button class="btn btn-primary" id="submit-files-btn" onclick="submitFiles()">Solve All</button>
        </div>
      </div>

      <div class="error-msg" id="error-msg"></div>
    </div>

    <!-- Tasks -->
    <div class="card">
      <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;">
        <div class="card-title" style="margin-bottom:0;">Tasks</div>
        <div>
          <a class="btn-download" id="cleanup-btn" style="display:none;margin-right:8px;cursor:pointer;" onclick="cleanupTasks()">Clear Done</a>
          <a class="btn-download" id="download-all-btn" style="display:none;" onclick="downloadAll()">Download All</a>
        </div>
      </div>
      <div class="task-list" id="task-list">
        <p style="color:#999;font-size:13px;">No tasks yet.</p>
      </div>
    </div>
  </div>

  <!-- Task detail modal -->
  <div class="modal-overlay" id="modal-overlay" onclick="closeModal(event)">
    <div class="modal" id="modal-content">
        <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;">
        <h2 id="modal-title" style="margin-bottom:0;">Task Detail</h2>
        <div>
          <button id="modal-refresh" style="padding:6px 10px;border:1px solid #ddd;border-radius:6px;background:#fff;cursor:pointer;font-size:12px;margin-right:8px;" title="Refresh" onclick="refreshModalContent()">Refresh</button>
          <a class="btn-download" id="modal-download" style="display:none;margin-right:8px;" onclick="">Download</a>
          <button class="btn btn-secondary" onclick="closeModalDirect()" style="padding:6px 14px;font-size:12px;">Close</button>
        </div>
      </div>
      <div id="modal-body"></div>
    </div>
  </div>

  <script>
    let inputMode = 'text';
    let pendingFiles = [];
    let pollTimers = {};

    // Configure marked to preserve math delimiters
    marked.setOptions({
      breaks: true,
      gfm: true,
    });

    function renderMarkdownWithMath(md) {
      // Protect math delimiters from marked escaping
      const mathBlocks = [];
      const protectedMd = md
        .replace(/\$\$([\s\S]+?)\$\$/g, (m) => {
          mathBlocks.push({ type: 'block', content: m.slice(2, -2) });
          return `%%MATH_BLOCK_${mathBlocks.length - 1}%%`;
        })
        .replace(/\$([^\$\n]+?)\$/g, (m) => {
          mathBlocks.push({ type: 'inline', content: m.slice(1, -1) });
          return `%%MATH_BLOCK_${mathBlocks.length - 1}%%`;
        });

      let html = marked.parse(protectedMd);
      // Restore math blocks
      html = html.replace(/%%MATH_BLOCK_(\d+)%%/g, (_, idx) => {
        const block = mathBlocks[parseInt(idx)];
        try {
          if (block.type === 'block') {
            return `<div class="math-display">${katex.renderToString(block.content.trim(), { displayMode: true, throwOnError: false })}</div>`;
          }
          return katex.renderToString(block.content, { displayMode: false, throwOnError: false });
        } catch (e) {
          return block.type === 'block' ? `$$${block.content}$$` : `$${block.content}$`;
        }
      });
      return html;
    }

    function getToken() {
      const val = document.getElementById('solver-token').value.trim();
      return val;
    }

    function getConfigOverride() {
      const val = document.getElementById('config-input').value.trim();
      if (!val) return null;
      try { return JSON.parse(val); }
      catch (e) { showError('Invalid config JSON: ' + e.message); return null; }
    }

    // Secret key for private mode
    function getSecretKey() {
      let key = localStorage.getItem('secret_key');
      if (!key) {
        key = generateKey();
        localStorage.setItem('secret_key', key);
      }
      return key;
    }

    function generateKey() {
      const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz23456789';
      let result = '';
      const buf = new Uint8Array(16);
      crypto.getRandomValues(buf);
      for (let i = 0; i < 16; i++) {
        result += chars[buf[i] % chars.length];
      }
      return result;
    }

    function api(url, opts = {}) {
      const token = getToken();
      const sk = getSecretKey();
      const separator = url.includes('?') ? '&' : '?';
      let sep = '';
      if (token) sep += `token=${encodeURIComponent(token)}`;
      if (sk) {
        sep += `${sep ? '&' : ''}key=${encodeURIComponent(sk)}`;
      }
      return fetch(url + (sep ? separator + sep : ''), opts);
    }

    function setInputMode(mode) {
      inputMode = mode;
      document.getElementById('mode-text').classList.toggle('active', mode === 'text');
      document.getElementById('mode-file').classList.toggle('active', mode === 'file');
      document.getElementById('input-text-area').style.display = mode === 'text' ? 'block' : 'none';
      document.getElementById('input-file-area').style.display = mode === 'file' ? 'block' : 'none';
    }

    // File handling
    const fileInput = document.getElementById('file-input');
    const fileDrop = document.getElementById('file-drop');

    fileInput.addEventListener('change', (e) => addFiles(e.target.files));

    fileDrop.addEventListener('dragover', (e) => { e.preventDefault(); fileDrop.classList.add('dragover'); });
    fileDrop.addEventListener('dragleave', () => fileDrop.classList.remove('dragover'));
    fileDrop.addEventListener('drop', (e) => { e.preventDefault(); fileDrop.classList.remove('dragover'); addFiles(e.dataTransfer.files); });

    function addFiles(files) {
      for (const f of files) {
        if (f.name.endsWith('.md') && !pendingFiles.find(x => x.name === f.name)) {
          pendingFiles.push(f);
        }
      }
      renderFileList();
    }

    function removeFile(idx) {
      pendingFiles.splice(idx, 1);
      renderFileList();
    }

    function renderFileList() {
      const el = document.getElementById('file-list');
      if (pendingFiles.length === 0) { el.innerHTML = ''; return; }
      el.innerHTML = pendingFiles.map((f, i) =>
        `<div class="file-item"><span>${f.name} (${(f.size/1024).toFixed(1)} KB)</span><span class="remove" onclick="removeFile(${i})">×</span></div>`
      ).join('');
    }

    function showError(msg) {
      const el = document.getElementById('error-msg');
      el.textContent = msg;
      el.classList.add('visible');
      setTimeout(() => el.classList.remove('visible'), 5000);
    }

    function hideError() { document.getElementById('error-msg').classList.remove('visible'); }

    // Submit text problem
    async function submitText() {
      const text = document.getElementById('problem-input').value.trim();
      if (!text) return;
      hideError();
      try {
        const body = { problem: text };
        const cfg = getConfigOverride();
        if (cfg) body.config = cfg;
        if (document.getElementById('private-mode').checked) {
          body.secret_key = getSecretKey();
        }
        const resp = await api('/api/submit', {
          method: 'POST',
          headers: {'Content-Type': 'application/json'},
          body: JSON.stringify(body)
        });
        const data = await resp.json();
        if (data.error) { showError(data.error); return; }
        document.getElementById('problem-input').value = '';
        loadTasks();
      } catch (e) { showError('Network error: ' + e.message); }
    }

    // Submit files
    async function submitFiles() {
      if (pendingFiles.length === 0) { showError('No files selected'); return; }
      hideError();
      const fd = new FormData();
      pendingFiles.forEach(f => fd.append('files', f));
      const cfg = getConfigOverride();
      if (cfg) fd.append('config', JSON.stringify(cfg));
      if (document.getElementById('private-mode').checked) {
        fd.append('secret_key', getSecretKey());
      }
      try {
        const token = getToken();
        const resp = await api('/api/submit-file', { method: 'POST', body: fd });
        const data = await resp.json();
        if (data.error) { showError(data.error); return; }
        pendingFiles = [];
        renderFileList();
        fileInput.value = '';
        loadTasks();
      } catch (e) { showError('Network error: ' + e.message); }
    }

    const DEFAULT_URL = 'https://github.com/Usami-Mira/CC_Integrater/raw/refs/heads/main/';

    // Load config
    const savedUrl = localStorage.getItem('solver_url');
    document.getElementById('solver-url').value = savedUrl || DEFAULT_URL;
    api('/api/config')
      .then(r => r.json())
      .then(data => {
        if (data.solver_url) {
          document.getElementById('solver-url').value = data.solver_url;
          localStorage.setItem('solver_url', data.solver_url);
        }
        if (data.default_config && Object.keys(data.default_config).length > 0) {
          document.getElementById('config-input').value = JSON.stringify(data.default_config, null, 2);
        }
      })
      .catch(() => {});

    // Load saved token
    const savedToken = localStorage.getItem('solver_token');
    if (savedToken) {
      document.getElementById('solver-token').value = savedToken;
    }
    document.getElementById('solver-token').addEventListener('change', (e) => {
      localStorage.setItem('solver_token', e.target.value);
    });

    async function updateConfig() {
      const url = document.getElementById('solver-url').value.trim();
      if (!url) return;
      localStorage.setItem('solver_url', url);
      const btn = document.querySelector('.config-row button');
      btn.textContent = 'Fetching...';
      btn.disabled = true;
      try {
        const resp = await api('/api/config', {
          method: 'POST',
          headers: {'Content-Type': 'application/json'},
          body: JSON.stringify({solver_url: url})
        });
        const data = await resp.json();
        if (data.status === 'ok') {
          alert('Solver files updated successfully!');
        } else {
          alert('Update failed: ' + (data.error || 'unknown'));
        }
      } catch (e) { alert('Network error'); }
      btn.textContent = 'Update';
      btn.disabled = false;
    }

    // Task list
    function renderTaskProgress(filesDone, status) {
      const steps = (filesDone || []).map(f => {
        const step = typeof f === 'string' ? f : f.step;
        const st = typeof f === 'string' ? 'history' : f.status;
        const cls = st === 'current' ? 'current' : 'done';
        return `<span class="task-file-step ${cls}">${step}</span>`;
      });
      if (status === 'running' || status === 'pending') {
        steps.push(`<span class="task-file-step current">running…</span>`);
      }
      return steps.join('');
    }

    async function loadTasks() {
      try {
        const resp = await api('/api/tasks');
        const data = await resp.json();
        const el = document.getElementById('task-list');
        const downloadAll = document.getElementById('download-all-btn');

        if (!data.tasks || data.tasks.length === 0) {
          el.innerHTML = '<p style="color:#999;font-size:13px;">No tasks yet.</p>';
          downloadAll.style.display = 'none';
          document.getElementById('cleanup-btn').style.display = 'none';
          return;
        }

        const hasComplete = data.tasks.some(t => t.status === 'complete');
        downloadAll.style.display = hasComplete ? 'inline-block' : 'none';
        const hasCleanup = data.tasks.some(t => t.status === 'complete' || t.status === 'error');
        document.getElementById('cleanup-btn').style.display = hasCleanup ? 'inline-block' : 'none';

        const token = getToken();
        const tokenSep = token ? `?token=${encodeURIComponent(token)}&` : '?';

        el.innerHTML = data.tasks.map(t => {
          const badgeClass = 'badge-' + t.status;
          const progressHtml = renderTaskProgress(t.files_done || [], t.status);
          const lockIcon = t.is_private ? '<span style="font-size:12px;color:#e67e22;" title="Private task">🔒</span>' : '';
          const deleteBtn = t.status !== 'running'
            ? `<span class="task-delete" onclick="event.stopPropagation();deleteTask('${t.task_id}')" title="Delete">✕</span>`
            : '';
          const sk = getSecretKey();
          const downloadHref = `/api/download/${t.task_id}?key=${encodeURIComponent(sk)}` + (token ? `&token=${encodeURIComponent(token)}` : '');
          return `<div class="task-item" onclick="openTask('${t.task_id}')">
            <div style="flex:1;min-width:0;">
              <div class="task-name">${t.name || t.task_id} ${lockIcon}</div>
              <div style="font-size:11px;color:#aaa;font-family:monospace;">${t.task_id}</div>
              <div class="task-preview">${t.problem_preview || ''}</div>
              <div class="task-files">${progressHtml}</div>
            </div>
            <div class="task-meta">
              <span class="badge ${badgeClass}">${t.status}</span>
              ${t.status === 'complete' ? `<a class="btn-download" href="${downloadHref}" onclick="event.stopPropagation()">↓ Download</a>` : ''}
              ${deleteBtn}
            </div>
          </div>`;
        }).join('');
      } catch (e) {}
    }

    // Task detail modal
    async function openTask(taskId) {
      const overlay = document.getElementById('modal-overlay');
      const body = document.getElementById('modal-body');
      const title = document.getElementById('modal-title');
      const downloadBtn = document.getElementById('modal-download');

      title.textContent = 'Loading...';
      downloadBtn.style.display = 'none';
      body.innerHTML = '<p style="color:#888;">Loading task info...</p>';
      overlay.classList.add('visible');

      try {
        const resp = await api('/api/status/' + taskId);
        if (!resp.ok) {
          const errData = await resp.json().catch(() => null);
          body.innerHTML = `<p style="color:#888;">Failed to load task: HTTP ${resp.status}${errData?.error ? ' — ' + errData.error : ''}</p>`;
          return;
        }
        const t = await resp.json();
        if (!t || !t.status) {
          body.innerHTML = `<p style="color:#888;">Invalid response from server</p>`;
          return;
        }
        title.textContent = t.name || taskId;

        const progressHtml = renderTaskProgress(t.files_done || [], t.status);

        if (t.status === 'complete') {
          const resResp = await api('/api/result/' + taskId);
          const resData = await resResp.json();
          const logResp = await api('/api/logs/' + taskId + '?lines=100');
          const logData = await logResp.json();
          const logHtml = (logData.logs || []).length > 0
            ? `<details style="margin-top:16px;"><summary style="cursor:pointer;font-size:13px;font-weight:600;color:#666;">Logs</summary><div class="log-console">${(logData.logs || []).map(l => escapeHtml(l)).join('\n')}</div></details>`
            : '';
          if (resData.content) {
            body.innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div><div class="result-content">${renderMarkdownWithMath(resData.content)}</div>${logHtml}`;
          } else {
            body.innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div>${logHtml}<p style="color:#888;">Result file not found. <a href="/api/download/${taskId}">Download workspace</a> instead.</p>`;
          }
          const tkn = getToken();
          downloadBtn.href = `/api/download/${taskId}`;
          downloadBtn.style.display = 'inline-block';
        } else if (t.status === 'error') {
          const logResp = await api('/api/logs/' + taskId + '?lines=100');
          const logData = await logResp.json();
          body.innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div><div class="error-msg visible">${t.error || 'Task failed'}</div><div class="log-console" style="margin-top:12px;">${(logData.logs || []).map(l => escapeHtml(l)).join('\n')}</div>`;
        } else {
          // Running/pending: show progress + logs + workspace files
          const logResp = await api('/api/logs/' + taskId + '?lines=50');
          const logData = await logResp.json();
          const wsFiles = await loadWorkspaceFiles(taskId);
          body.innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div>${renderWorkspaceFiles(taskId, wsFiles)}<div class="log-console" style="margin-top:12px;">${(logData.logs || []).map(l => escapeHtml(l)).join('\n')}</div>`;
          // Auto-load first file
          if (wsFiles.length > 0) {
            showWorkspaceFile(taskId, wsFiles[0], 'ws-tabs-' + taskId, 'ws-content-' + taskId);
          }
        }

        // Start polling if running
        if (t.status === 'running' || t.status === 'pending') {
          startTaskPoll(taskId);
        }
      } catch (e) {
        body.innerHTML = `<p style="color:#888;">Failed to load task: ${e.message}</p>`;
        console.error('openTask error:', e);
      }
    }

    function startTaskPoll(taskId) {
      if (pollTimers[taskId]) clearInterval(pollTimers[taskId]);
      pollTimers[taskId] = setInterval(async () => {
        try {
          const resp = await api('/api/status/' + taskId);
          const t = await resp.json();
          if (t.status === 'complete') {
            clearInterval(pollTimers[taskId]);
            delete pollTimers[taskId];
            openTask(taskId);
            loadTasks();
          } else if (t.status === 'error') {
            clearInterval(pollTimers[taskId]);
            delete pollTimers[taskId];
            loadTasks();
          } else {
            // Running/pending: only refresh task list, leave modal alone
            loadTasks();
          }
        } catch (e) {}
      }, 10000);
    }

    // Workspace files for running tasks
    async function loadWorkspaceFiles(taskId) {
      try {
        const resp = await api('/api/workspace/' + taskId + '/files');
        const data = await resp.json();
        return data.files || [];
      } catch (e) { return []; }
    }

    async function loadWorkspaceFile(taskId, filename) {
      try {
        const resp = await api('/api/workspace/' + taskId + '/' + filename);
        const data = await resp.json();
        return data.content || null;
      } catch (e) { return null; }
    }

    function renderWorkspaceFiles(taskId, files) {
      if (!files || files.length === 0) return '';
      const tabsId = 'ws-tabs-' + taskId;
      const contentId = 'ws-content-' + taskId;
      const firstFile = files[0];
      const tabs = files.map(f =>
        `<button class="ws-tab" data-task="${taskId}" data-file="${f}" onclick="showWorkspaceFile('${taskId}','${f}','${tabsId}','${contentId}')" style="padding:4px 10px;border:1px solid #ddd;border-radius:4px 4px 0 0;background:${f === firstFile ? '#4361ee' : '#f0f0f0'};color:${f === firstFile ? '#fff' : '#666'};border-color:${f === firstFile ? '#4361ee' : '#ddd'};cursor:pointer;font-size:12px;font-family:monospace;">${f}</button>`
      ).join('');
      return `<div id="${tabsId}" style="display:flex;gap:4px;margin-bottom:8px;flex-wrap:wrap;">${tabs}</div><div id="${contentId}" style="background:#1e1e2e;color:#cdd6f4;border-radius:8px;padding:12px;max-height:300px;overflow-y:auto;font-family:monospace;font-size:12px;line-height:1.5;white-space:pre-wrap;word-break:break-all;">Loading...</div>`;
    }

    async function showWorkspaceFile(taskId, filename, tabsId, contentId) {
      const content = await loadWorkspaceFile(taskId, filename);
      const el = document.getElementById(contentId);
      if (el) el.textContent = content || 'File not found';
      // Highlight active tab
      document.querySelectorAll(`#${tabsId} .ws-tab`).forEach(btn => {
        btn.style.background = btn.dataset.file === filename ? '#4361ee' : '#f0f0f0';
        btn.style.color = btn.dataset.file === filename ? '#fff' : '#666';
        btn.style.borderColor = btn.dataset.file === filename ? '#4361ee' : '#ddd';
      });
    }

    // Delete task
    async function deleteTask(taskId) {
      if (!confirm('Delete this task? This cannot be undone.')) return;
      try {
        const resp = await api(`/api/task/${taskId}`, { method: 'DELETE' });
        const data = await resp.json();
        if (data.error) { showError(data.error); return; }
        loadTasks();
      } catch (e) { showError('Network error: ' + e.message); }
    }

    // Cleanup completed/errored tasks
    async function cleanupTasks() {
      if (!confirm('Clear all completed and errored tasks? This cannot be undone.')) return;
      try {
        const resp = await api('/api/tasks/cleanup', { method: 'POST' });
        const data = await resp.json();
        loadTasks();
      } catch (e) { showError('Network error: ' + e.message); }
    }

    function closeModal(e) {
      if (e.target === document.getElementById('modal-overlay')) {
        closeModalDirect();
      }
    }

    function closeModalDirect() {
      document.getElementById('modal-overlay').classList.remove('visible');
      Object.values(pollTimers).forEach(t => clearInterval(t));
      pollTimers = {};
    }

    async function refreshModalContent() {
      const taskId = document.getElementById('modal-download').href?.split('/').pop();
      if (!taskId) return;
      // Remember which file user was viewing
      const activeTab = document.querySelector('.ws-tab[style*="#4361ee"]');
      const currentFile = activeTab ? activeTab.dataset.file : null;
      const resp = await api('/api/status/' + taskId);
      if (!resp.ok) return;
      const t = await resp.json();
      document.getElementById('modal-title').textContent = t.name || taskId;
      const progressHtml = renderTaskProgress(t.files_done || [], t.status);

      if (t.status === 'complete') {
        const resResp = await api('/api/result/' + taskId);
        const resData = await resResp.json();
        const logResp = await api('/api/logs/' + taskId + '?lines=100');
        const logData = await logResp.json();
        const logHtml = (logData.logs || []).length > 0
          ? `<details style="margin-top:16px;"><summary style="cursor:pointer;font-size:13px;font-weight:600;color:#666;">Logs</summary><div class="log-console">${(logData.logs || []).map(l => escapeHtml(l)).join('\n')}</div></details>`
          : '';
        if (resData.content) {
          document.getElementById('modal-body').innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div><div class="result-content">${renderMarkdownWithMath(resData.content)}</div>${logHtml}`;
        } else {
          document.getElementById('modal-body').innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div>${logHtml}<p style="color:#888;">Result file not found. <a href="/api/download/${taskId}">Download workspace</a> instead.</p>`;
        }
        const sk = getSecretKey();
        const token = getToken();
        document.getElementById('modal-download').href = `/api/download/${taskId}?key=${encodeURIComponent(sk)}${token ? '&token=' + encodeURIComponent(token) : ''}`;
        document.getElementById('modal-download').style.display = 'inline-block';
      } else if (t.status === 'error') {
        const logResp = await api('/api/logs/' + taskId + '?lines=100');
        const logData = await logResp.json();
        document.getElementById('modal-body').innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div><div class="error-msg visible">${t.error || 'Task failed'}</div><div class="log-console" style="margin-top:12px;">${(logData.logs || []).map(l => escapeHtml(l)).join('\n')}</div>`;
      } else {
        const logResp = await api('/api/logs/' + taskId + '?lines=50');
        const logData = await logResp.json();
        const wsFiles = await loadWorkspaceFiles(taskId);
        document.getElementById('modal-body').innerHTML = `<div class="task-files" style="margin-bottom:12px;">${progressHtml}</div>${renderWorkspaceFiles(taskId, wsFiles)}<div class="log-console" style="margin-top:12px;">${(logData.logs || []).map(l => escapeHtml(l)).join('\n')}</div>`;
        // Restore previously viewed file
        const fileToLoad = wsFiles.includes(currentFile) ? currentFile : wsFiles[0];
        if (fileToLoad) {
          showWorkspaceFile(taskId, fileToLoad, 'ws-tabs-' + taskId, 'ws-content-' + taskId);
        }
      }
    }

    function downloadAll() {
      const token = getToken();
      const sk = getSecretKey();
      const sep = token ? '?' : '?';
      window.location.href = `/api/download-all?${sep}key=${encodeURIComponent(sk)}${token ? '&token=' + encodeURIComponent(token) : ''}`;
    }

    function escapeHtml(s) {
      return s.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
    }

    // Private mode UI
    const privateModeCheckbox = document.getElementById('private-mode');
    const secretDisplay = document.getElementById('secret-display');
    if (privateModeCheckbox) {
      privateModeCheckbox.addEventListener('change', () => {
        secretDisplay.style.display = privateModeCheckbox.checked ? 'inline' : 'none';
        secretDisplay.textContent = privateModeCheckbox.checked ? `Key: ${getSecretKey()}` : '';
      });
    }

    // Initial load
    loadTasks();
    setInterval(loadTasks, 10000);
  </script>
</body>
</html>