All files showHistoryPopup.ts

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import { CommandHistory } from './CommandHistory';
 
 
/** gets an instance of the Command History */
const commandHistory = CommandHistory.getInstance();
 
/**
 * Opens a modal that shows the latest commands and auto-refreshes every second.
 * Storage is unbounded; UI renders only a window (latest PAGE items) for speed.
 * 
 * @returns {void}
 */
export function showHistoryPopup():void{
  if (document.getElementById('aac-history-overlay')) return;
 
  // --- overlay & dialog ---
  const overlay = document.createElement('div');
  overlay.id = 'aac-history-overlay';
  overlay.style.position = 'fixed';
  overlay.style.inset = '0';
  overlay.style.background = 'rgba(0,0,0,0.6)';
  overlay.style.display = 'flex';
  overlay.style.justifyContent = 'center';
  overlay.style.alignItems = 'center';
  overlay.style.zIndex = '9999';
 
  const dialog = document.createElement('div');
  dialog.setAttribute('role', 'dialog');
  dialog.setAttribute('aria-modal', 'true');
  dialog.setAttribute('aria-labelledby', 'aac-history-title');
  Object.assign(dialog.style, {
    width: 'min(680px, 92vw)',
    maxHeight: '82vh',
    background: '#fff',
    borderRadius: '14px',
    padding: '16px',
    boxShadow: '0 10px 30px rgba(0,0,0,0.35)',
    display: 'flex',
    flexDirection: 'column',
    gap: '10px',
  } as CSSStyleDeclaration);
 
  const title = document.createElement('h2');
  title.id = 'aac-history-title';
  title.textContent = 'Command History';
  title.style.margin = '0 0 4px 0';
  title.style.fontSize = '1.3rem';
 
  const controls = document.createElement('div');
  Object.assign(controls.style, {
    display: 'flex',
    gap: '8px',
    alignItems: 'center',
    flexWrap: 'wrap',
  } as CSSStyleDeclaration);
 
  const goLatestBtn = btn('Go to latest');
  const clearBtn = btn('Clear');
  const closeBtn = btn('Close');
  controls.append(goLatestBtn, clearBtn, closeBtn);
 
  const listWrap = document.createElement('div');
  Object.assign(listWrap.style, {
    flex: '1',
    overflow: 'auto',
    background: '#f6f7fb',
    border: '1px solid #e4e6ef',
    borderRadius: '10px',
    padding: '8px',
  } as CSSStyleDeclaration);
 
  const list = document.createElement('ul');
  list.setAttribute('aria-live', 'polite');
  Object.assign(list.style, {
    listStyle: 'none',
    margin: '0',
    padding: '0',
    fontSize: '1.1rem',
  } as CSSStyleDeclaration);
  listWrap.appendChild(list);
 
  dialog.append(title, controls, listWrap);
  overlay.appendChild(dialog);
  document.body.appendChild(overlay);
 
  // --- windowed rendering state ---
  const PAGE = 200; // how many latest items to show in the UI
  let total = commandHistory.getSize();
  let windowEnd = total; // exclusive index
  let windowStart = Math.max(0, windowEnd - PAGE);
  let followTail = true; // always show the newest PAGE items
 
  function renderWindow() {
    const items = commandHistory.getSlice(windowStart, windowEnd);
    list.innerHTML = '';
    for (let i = 0; i < items.length; i++) {
      const entry = items[i];
      const li = document.createElement('li');
      
      // Format the command log entry with timestamp, command name, and status
      const time = entry.timestamp.toLocaleTimeString();
      
      li.innerHTML = `
        <span style="color: #6b7280; font-size: 0.9em;">${time}</span>
        <span style="font-weight: 600; margin: 0 8px;">${entry.commandName}</span>
        <span style="font-weight: normal;">${entry.status}</span>
      `;
      
      Object.assign(li.style, {
        padding: '10px 12px',
        margin: '6px 0',
        borderRadius: '8px',
        background: '#fff',
        border: '1px solid #e4e6ef',
        boxShadow: '0 1px 0 rgba(0,0,0,0.03)',
      } as CSSStyleDeclaration);
      list.appendChild(li);
    }
    listWrap.scrollTop = listWrap.scrollHeight; // stick to bottom
  }
 
  // initial paint
  renderWindow();
 
  // --- AUTO-REFRESH EVERY SECOND ---
  const timerId = window.setInterval(() => {
    const newTotal = commandHistory.getSize();
    if (newTotal !== total) {
      total = newTotal;
      if (followTail) {
        windowEnd = total;
        windowStart = Math.max(0, windowEnd - PAGE);
      }
      renderWindow();
    }
  }, 1000);
 
  // --- controls ---
  goLatestBtn.onclick = () => {
    total = commandHistory.getSize();
    windowEnd = total;
    windowStart = Math.max(0, windowEnd - PAGE);
    followTail = true;
    renderWindow();
  };
 
  clearBtn.onclick = () => {
    commandHistory.clear();
    total = 0;
    windowStart = 0;
    windowEnd = 0;
    renderWindow();
  };
 
  function close() {
    clearInterval(timerId); // important: stop the 1s refresh
    overlay.remove();
  }
  closeBtn.onclick = close;
  overlay.addEventListener('click', (e) => {
    if (e.target === overlay) close();
  });
  window.addEventListener(
    'keydown',
    (e) => {
      if (e.key === 'Escape') close();
    },
    { once: true },
  );
 
  function btn(label: string) {
    const b = document.createElement('button');
    b.textContent = label;
    Object.assign(b.style, {
      padding: '8px 12px',
      border: '1px solid #c9cbd6',
      borderRadius: '8px',
      background: '#ffffff',
      cursor: 'pointer',
      fontSize: '0.95rem',
    } as CSSStyleDeclaration);
    return b;
  }
}