// ── app.js — entry point ──────────────────────────────────
// Thin bootstrap: imports modules, wires DOM events, fires route().
// Navigation and copy-to-clipboard are wired via delegated click listeners
// below — no inline onclick= attributes, no window.* globals.

import { navigate, route }                                   from './modules/router.js';
import { connectWS, subscribeWS, updateWSIndicator }         from './modules/ws.js';
import { applyTheme, getTheme, updateToggleBtn, cycleTheme } from './modules/theme.js';
import { copyToClipboard }                                   from './modules/api.js';
import { getEnvelopeType }                                   from './modules/utils.js';
import {
  incrementErrorBadge,
  openCommandPalette,
  closeCommandPalette,
  isCommandPaletteOpen,
  handleGlobalSearch,
} from './modules/palette.js';

// ── Delegated click handlers ──────────────────────────────
// 1) Same-origin <a> clicks → SPA navigation (no full page reload).
// 2) .copy-btn[data-copy] → copyToClipboard.
function isInternalLinkClick(e, a) {
  if (e.defaultPrevented) return false;
  if (e.button !== 0) return false;
  if (e.metaKey || e.ctrlKey || e.shiftKey || e.altKey) return false;
  if (a.target && a.target !== '' && a.target !== '_self') return false;
  if (a.hasAttribute('download')) return false;
  const href = a.getAttribute('href');
  if (!href) return false;
  if (href.startsWith('#') || href.startsWith('mailto:') || href.startsWith('tel:')) return false;
  let url;
  try {
    url = new URL(href, window.location.href);
  } catch {
    return false;
  }
  if (url.origin !== window.location.origin) return false;
  return url;
}

document.addEventListener('click', (e) => {
  // Copy buttons first — stop the click from reaching a surrounding row link.
  const copyBtn = e.target.closest('.copy-btn[data-copy]');
  if (copyBtn) {
    e.preventDefault();
    e.stopPropagation();
    copyToClipboard(copyBtn.getAttribute('data-copy'), copyBtn);
    return;
  }

  const a = e.target.closest('a');
  if (!a) return;
  const url = isInternalLinkClick(e, a);
  if (!url) return;
  e.preventDefault();
  navigate(url.pathname + url.search + url.hash);
});

// ── Bootstrap ─────────────────────────────────────────────
applyTheme(getTheme());

document.addEventListener('DOMContentLoaded', function() {
  updateToggleBtn(getTheme());
  const btn = document.getElementById('theme-toggle');
  if (btn) btn.addEventListener('click', cycleTheme);

  // Global Search
  const searchInput = document.getElementById('global-search');
  if (searchInput) {
    searchInput.addEventListener('keydown', (e) => {
      if (e.key === 'Enter') {
        const val = searchInput.value.trim();
        if (val) handleGlobalSearch(val);
      }
    });
  }

  // Cmd+K hint button — show platform-appropriate label
  const isMac = /Mac|iPhone|iPad/.test(navigator.platform || navigator.userAgentData?.platform || '');
  const cmdKBtn = document.getElementById('cmd-k-hint');
  if (cmdKBtn) {
    cmdKBtn.innerHTML = `<kbd>${isMac ? '⌘K' : 'Ctrl+K'}</kbd>`;
    cmdKBtn.addEventListener('click', openCommandPalette);
  }

  // Global error tracking — persists across page navigations
  subscribeWS(function globalErrorTracker(msg) {
    if (msg.type !== 'message') return;
    if (getEnvelopeType(msg.data) === 'error') {
      incrementErrorBadge();
    }
  });

  // Keyboard shortcuts
  let _pendingGoto = false;
  document.addEventListener('keydown', (e) => {
    // Ignore when typing in inputs
    if (['INPUT', 'TEXTAREA', 'SELECT'].includes(document.activeElement.tagName)) {
      if (e.key === 'Escape') document.activeElement.blur();
      return;
    }

    // Cmd+K or Ctrl+K — command palette
    if ((e.metaKey || e.ctrlKey) && e.key === 'k') {
      e.preventDefault();
      if (isCommandPaletteOpen()) closeCommandPalette();
      else openCommandPalette();
      return;
    }

    // '/' to focus search
    if (e.key === '/' && !isCommandPaletteOpen()) {
      e.preventDefault();
      const si = document.getElementById('global-search');
      if (si) si.focus();
      return;
    }

    // Escape closes palette
    if (e.key === 'Escape' && isCommandPaletteOpen()) {
      closeCommandPalette();
      return;
    }

    // 'g' prefix for goto shortcuts
    if (e.key === 'g' && !_pendingGoto) {
      _pendingGoto = true;
      setTimeout(() => { _pendingGoto = false; }, 800);
      return;
    }

    if (_pendingGoto) {
      _pendingGoto = false;
      if (e.key === 'd') navigate('/');
      else if (e.key === 's') navigate('/sessions');
      else if (e.key === 'a') navigate('/agents');
      else if (e.key === 'i') navigate('/infrastructure');
      else if (e.key === 'p') navigate('/settings');
      else if (e.key === 'u') navigate('/usage');
      return;
    }
  });

  connectWS();
  updateWSIndicator();
  route();
});