(() => {
  const tabBar = document.querySelector('[data-console-tab-bar]');
  const tabPanels = document.querySelector('[data-console-tab-panels]');
  if (!tabBar || !tabPanels) return;

  let tabCount = 0;
  const idleMs = 5 * 60 * 1000;
  const idleTimers = new Map();
  const storageKey = 'pi_control_console_tabs';

  const saveTabs = () => {
    const tabs = [];
    tabBar.querySelectorAll('.console-tab').forEach((btn) => {
      const id = btn.dataset.tabId;
      const panel = tabPanels.querySelector(`.console-panel[data-tab-id="${id}"]`);
      const iframe = panel ? panel.querySelector('iframe') : null;
      if (iframe && iframe.src) {
        tabs.push({
          label: btn.firstChild ? btn.firstChild.textContent : btn.textContent,
          url: iframe.src,
          openedAt: Date.now(),
        });
      }
    });
    localStorage.setItem(storageKey, JSON.stringify(tabs));
  };

  const activateTab = (id) => {
    tabBar.querySelectorAll('.console-tab').forEach((btn) => {
      btn.classList.toggle('is-active', btn.dataset.tabId === id);
    });
    tabPanels.querySelectorAll('.console-panel').forEach((panel) => {
      panel.classList.toggle('is-active', panel.dataset.tabId === id);
    });
  };

  const getActiveIframe = () => {
    const activePanel = tabPanels.querySelector('.console-panel.is-active');
    if (!activePanel) return null;
    return activePanel.querySelector('iframe');
  };

  const trySendToIframe = (iframe, command) => {
    if (!iframe) return false;
    try {
      const win = iframe.contentWindow;
      if (!win) return false;
      const term = win.term || win.xterm || win.terminal;
      if (term && typeof term.write === 'function') {
        term.write(command + '\r\n');
        return true;
      }
    } catch (e) {
      return false;
    }
    return false;
  };

  const openTab = (label, url, persist = true) => {
    const id = `tab-${++tabCount}`;
    const btn = document.createElement('button');
    btn.type = 'button';
    btn.className = 'console-tab';
    btn.textContent = label || 'Konsole';
    btn.dataset.tabId = id;
    btn.addEventListener('click', () => activateTab(id));

    const closeBtn = document.createElement('span');
    closeBtn.className = 'console-tab-close';
    closeBtn.textContent = '×';
    closeBtn.addEventListener('click', (e) => {
      e.stopPropagation();
      const panel = tabPanels.querySelector(`.console-panel[data-tab-id="${id}"]`);
      if (panel) panel.remove();
      btn.remove();
      idleTimers.delete(id);
      saveTabs();
      const next = tabBar.querySelector('.console-tab');
      if (next) activateTab(next.dataset.tabId);
    });
    btn.appendChild(closeBtn);

    const panel = document.createElement('div');
    panel.className = 'console-panel';
    panel.dataset.tabId = id;
    panel.innerHTML = `<iframe src="${url}" title="${label || 'Konsole'}"></iframe>`;

    tabBar.appendChild(btn);
    tabPanels.appendChild(panel);
    activateTab(id);
    if (persist) saveTabs();

    const iframe = panel.querySelector('iframe');
    const markActive = () => {
      idleTimers.set(id, Date.now());
    };
    idleTimers.set(id, Date.now());

    iframe.addEventListener('load', () => {
      try {
        const doc = iframe.contentWindow.document;
        ['keydown', 'mousedown', 'wheel', 'touchstart'].forEach((evt) => {
          doc.addEventListener(evt, markActive, { passive: true });
        });
        const observer = new MutationObserver(markActive);
        observer.observe(doc.body, { childList: true, subtree: true, characterData: true });
      } catch (e) {
        // cross-origin or blocked; rely on timer only
      }
    });

    const idleCheck = setInterval(() => {
      const last = idleTimers.get(id) || 0;
      if (Date.now() - last > idleMs) {
        const panelEl = tabPanels.querySelector(`.console-panel[data-tab-id="${id}"]`);
        const btnEl = tabBar.querySelector(`.console-tab[data-tab-id="${id}"]`);
        if (panelEl) panelEl.remove();
        if (btnEl) btnEl.remove();
        idleTimers.delete(id);
        saveTabs();
        clearInterval(idleCheck);
        const next = tabBar.querySelector('.console-tab');
        if (next) activateTab(next.dataset.tabId);
      }
    }, 10000);
  };

  document.querySelectorAll('.console-launch').forEach((el) => {
    const url = el.dataset.url;
    const host = el.dataset.host || 'Konsole';
    if (url) {
      openTab(host, url);
    }
    el.remove();
  });

  const showRestoreNotice = (text) => {
    const notice = document.querySelector('[data-console-notice]');
    if (!notice) return;
    notice.textContent = text;
    notice.style.display = 'block';
  };

  try {
    const raw = localStorage.getItem(storageKey);
    if (raw) {
      const tabs = JSON.parse(raw);
      if (Array.isArray(tabs)) {
        const now = Date.now();
        tabs.forEach((t) => {
          if (t && t.url) {
            if (t.openedAt && now - t.openedAt > (10 * 60 * 1000)) {
              showRestoreNotice('Token abgelaufen, bitte Konsole neu öffnen.');
              return;
            }
            openTab(t.label || 'Konsole', t.url, false);
          }
        });
      }
    }
  } catch (e) {
    // ignore
  }

  const queueBody = document.querySelector('[data-queue-body]');
  const countdownEl = document.querySelector('[data-queue-countdown]');
  const refreshBtn = document.querySelector('[data-queue-refresh]');
  const queueBtn = document.querySelector('[data-queue-button]');
  const queueCount = document.querySelector('[data-queue-count]');
  const queueModal = document.querySelector('[data-queue-modal]');
  const queueClose = document.querySelector('[data-queue-close]');
  if (!queueBody || !countdownEl) return;

  let remaining = 10;

  const fetchQueue = async () => {
    const url = new URL(window.location.href);
    url.searchParams.set('queue_json', '1');
    try {
      const res = await fetch(url.toString(), { cache: 'no-store' });
      if (!res.ok) return;
      const data = await res.json();
      if (data && data.html) {
        queueBody.innerHTML = data.html;
      }
      if (queueCount && typeof data.count === 'number') {
        queueCount.textContent = String(data.count);
        queueCount.style.display = data.count > 0 ? 'inline-flex' : 'none';
      }
      remaining = data && data.next ? data.next : 10;
    } catch (e) {
      // ignore
    }
  };

  const tick = () => {
    remaining -= 1;
    if (remaining <= 0) {
      fetchQueue();
      remaining = 10;
    }
    countdownEl.textContent = String(remaining);
  };

  setInterval(tick, 1000);
  fetchQueue();
  if (refreshBtn) {
    refreshBtn.addEventListener('click', () => {
      fetchQueue();
      remaining = 10;
      countdownEl.textContent = String(remaining);
    });
  }

  if (queueBtn && queueModal) {
    queueBtn.addEventListener('click', () => {
      queueModal.classList.add('is-open');
      queueModal.setAttribute('aria-hidden', 'false');
      fetchQueue();
    });
  }
  if (queueClose && queueModal) {
    queueClose.addEventListener('click', () => {
      queueModal.classList.remove('is-open');
      queueModal.setAttribute('aria-hidden', 'true');
    });
  }
  if (queueModal) {
    queueModal.addEventListener('click', (e) => {
      if (e.target === queueModal) {
        queueModal.classList.remove('is-open');
        queueModal.setAttribute('aria-hidden', 'true');
      }
    });
  }

  queueBody.addEventListener('click', async (e) => {
    const btn = e.target.closest('[data-queue-action]');
    if (!btn) return;
    const runId = btn.getAttribute('data-run-id');
    const action = btn.getAttribute('data-queue-action');
    if (!runId || !action) return;
    const url = new URL(window.location.href);
    url.searchParams.set('queue_action_json', '1');
    const formData = new FormData();
    formData.set('run_id', runId);
    formData.set('action', action);
    try {
      const res = await fetch(url.toString(), { method: 'POST', body: formData, cache: 'no-store' });
      const data = await res.json();
      if (!data.ok) {
        if (consoleNotice) {
          consoleNotice.textContent = data.error || 'Aktion fehlgeschlagen.';
          consoleNotice.style.display = 'block';
        }
      }
    } catch (err) {
      if (consoleNotice) {
        consoleNotice.textContent = 'Aktion fehlgeschlagen.';
        consoleNotice.style.display = 'block';
      }
    }
    fetchQueue();
    remaining = 10;
    countdownEl.textContent = String(remaining);
  });

  const consoleForm = document.querySelector('[data-console-form]');
  const consoleError = document.querySelector('[data-console-error]');
  const consoleNotice = document.querySelector('[data-console-notice]');
  const tokenEl = document.querySelector('[data-console-token]');
  if (consoleForm) {
    consoleForm.addEventListener('submit', (e) => e.preventDefault());

    const presetSelect = consoleForm.querySelector('select[name="terminal_preset_id"]');
    const commandTextarea = consoleForm.querySelector('textarea[name="terminal_command_text"]');
    if (presetSelect && commandTextarea) {
      presetSelect.addEventListener('change', () => {
        const opt = presetSelect.selectedOptions[0];
        const cmd = opt && opt.dataset && opt.dataset.command ? opt.dataset.command : '';
        if (cmd) {
          commandTextarea.value = cmd;
        }
      });
    }

    const submitOpen = async () => {
      const formData = new FormData(consoleForm);
      if (presetSelect) formData.set('terminal_preset_id', '');
      const url = new URL(window.location.href);
      url.searchParams.set('open_console_json', '1');
      const res = await fetch(url.toString(), { method: 'POST', body: formData, cache: 'no-store' });
      const data = await res.json();
      if (!data.ok) {
        if (consoleError) {
          consoleError.textContent = data.error || 'Fehler beim Öffnen der Konsole.';
          consoleError.style.display = 'block';
        }
        return;
      }
      if (consoleError) consoleError.style.display = 'none';
      if (consoleNotice) consoleNotice.style.display = 'none';
      if (tokenEl) tokenEl.textContent = data.token || '';
      if (data.url) openTab(data.host || 'Konsole', data.url);
    };

    const submitRun = async () => {
      const formData = new FormData(consoleForm);
      if (presetSelect) formData.set('terminal_preset_id', '');
      const url = new URL(window.location.href);
      url.searchParams.set('run_command_json', '1');
      const res = await fetch(url.toString(), { method: 'POST', body: formData, cache: 'no-store' });
      const data = await res.json();
      if (!data.ok) {
        if (consoleError) {
          consoleError.textContent = data.error || 'Fehler beim Ausführen.';
          consoleError.style.display = 'block';
        }
        return;
      }
      if (consoleError) consoleError.style.display = 'none';
      if (consoleNotice) {
        consoleNotice.textContent = data.notice || '';
        consoleNotice.style.display = 'block';
      }
      fetchQueue();
      remaining = 10;
      countdownEl.textContent = String(remaining);
    };

    const openBtn = consoleForm.querySelector('[data-open-console]');
    const runBtn = consoleForm.querySelector('[data-run-command]');
    const sendBtn = consoleForm.querySelector('[data-send-active]');
    if (openBtn) {
      openBtn.addEventListener('click', (e) => {
        e.preventDefault();
        submitOpen();
      });
    }
    if (runBtn) {
      runBtn.addEventListener('click', (e) => {
        e.preventDefault();
        submitRun();
      });
    }
    if (sendBtn) {
      sendBtn.addEventListener('click', (e) => {
        e.preventDefault();
        if (!commandTextarea || !commandTextarea.value.trim()) {
          if (consoleError) {
            consoleError.textContent = 'Bitte zuerst einen Befehl eingeben.';
            consoleError.style.display = 'block';
          }
          return;
        }
        const activeIframe = getActiveIframe();
        if (!activeIframe) {
          if (consoleNotice) {
            consoleNotice.textContent = 'Keine aktive Konsole – es wird eine neue Konsole geöffnet.';
            consoleNotice.style.display = 'block';
          }
          submitOpen();
          return;
        }
        const formData = new FormData(consoleForm);
        if (presetSelect) formData.set('terminal_preset_id', '');
        const url = new URL(window.location.href);
        url.searchParams.set('open_console_json', '1');
        fetch(url.toString(), { method: 'POST', body: formData, cache: 'no-store' })
          .then((res) => res.json())
          .then((data) => {
            if (!data.ok) {
              if (consoleNotice) {
                consoleNotice.textContent = data.error || 'Befehl konnte nicht ausgeführt werden.';
                consoleNotice.style.display = 'block';
              }
              return;
            }
            if (data.url) {
              activeIframe.src = data.url;
            }
            if (consoleError) consoleError.style.display = 'none';
          })
          .catch(() => {
            if (consoleNotice) {
              consoleNotice.textContent = 'Befehl konnte nicht ausgeführt werden.';
              consoleNotice.style.display = 'block';
            }
          });
      });
    }
  }
})();