(function () {
  const browser = typeof chrome !== 'undefined' && chrome.storage ? chrome : typeof browser !== 'undefined' ? browser : chrome;
  const KEY = 'holesailSettings';
  const DEFAULTS = {
    proxyPort: 8443,
    defaultServerPort: 3000,
    defaultServerHost: '127.0.0.1',
    defaultSecure: true,
    requestTimeoutMs: 0,
    readyTimeoutMs: 0,
    disableOnFileUrls: false,
    notifyOnDisconnect: false,
    debug: false
  };

  const proxyPortEl = document.getElementById('proxyPort');
  const defaultServerPortEl = document.getElementById('defaultServerPort');
  const defaultServerHostEl = document.getElementById('defaultServerHost');
  const defaultSecureEl = document.getElementById('defaultSecure');
  const requestTimeoutMsEl = document.getElementById('requestTimeoutMs');
  const readyTimeoutMsEl = document.getElementById('readyTimeoutMs');
  const disableOnFileUrlsEl = document.getElementById('disableOnFileUrls');
  const notifyOnDisconnectEl = document.getElementById('notifyOnDisconnect');
  const debugEl = document.getElementById('debug');
  const btnSave = document.getElementById('btnSave');
  const btnReset = document.getElementById('btnReset');
  const toastEl = document.getElementById('toast');

  function showToast(msg, isError) {
    toastEl.textContent = msg;
    toastEl.className = 'toast show' + (isError ? ' err' : '');
    clearTimeout(showToast._t);
    showToast._t = setTimeout(function () {
      toastEl.classList.remove('show');
    }, 2500);
  }

  function load() {
    browser.storage.local.get(KEY, function (result) {
      const s = result[KEY] || {};
      if (proxyPortEl) proxyPortEl.value = s.proxyPort != null ? s.proxyPort : DEFAULTS.proxyPort;
      if (defaultServerPortEl) defaultServerPortEl.value = s.defaultServerPort != null ? s.defaultServerPort : DEFAULTS.defaultServerPort;
      if (defaultServerHostEl) defaultServerHostEl.value = s.defaultServerHost != null ? s.defaultServerHost : DEFAULTS.defaultServerHost;
      if (defaultSecureEl) defaultSecureEl.checked = s.defaultSecure !== false;
      if (requestTimeoutMsEl) requestTimeoutMsEl.value = s.requestTimeoutMs != null ? s.requestTimeoutMs : DEFAULTS.requestTimeoutMs;
      if (readyTimeoutMsEl) readyTimeoutMsEl.value = s.readyTimeoutMs != null ? s.readyTimeoutMs : DEFAULTS.readyTimeoutMs;
      if (disableOnFileUrlsEl) disableOnFileUrlsEl.checked = s.disableOnFileUrls === true;
      if (notifyOnDisconnectEl) notifyOnDisconnectEl.checked = s.notifyOnDisconnect === true;
      if (debugEl) debugEl.checked = s.debug === true;
    });
  }

  function validate() {
    const proxyPort = proxyPortEl ? parseInt(proxyPortEl.value, 10) : DEFAULTS.proxyPort;
    if (isNaN(proxyPort) || proxyPort < 1 || proxyPort > 65535) {
      showToast('Proxy port must be 1–65535.', true);
      return null;
    }
    const defaultServerPort = defaultServerPortEl ? parseInt(defaultServerPortEl.value, 10) : DEFAULTS.defaultServerPort;
    if (isNaN(defaultServerPort) || defaultServerPort < 1 || defaultServerPort > 65535) {
      showToast('Default server port must be 1–65535.', true);
      return null;
    }
    const requestTimeout = requestTimeoutMsEl ? parseInt(requestTimeoutMsEl.value, 10) : DEFAULTS.requestTimeoutMs;
    if (isNaN(requestTimeout) || requestTimeout < 0) {
      showToast('Request timeout must be 0 or positive.', true);
      return null;
    }
    const readyTimeout = readyTimeoutMsEl ? parseInt(readyTimeoutMsEl.value, 10) : DEFAULTS.readyTimeoutMs;
    if (isNaN(readyTimeout) || readyTimeout < 0) {
      showToast('Ready timeout must be 0 or positive.', true);
      return null;
    }
    return {
      proxyPort,
      defaultServerPort,
      defaultServerHost: (defaultServerHostEl && defaultServerHostEl.value.trim()) || DEFAULTS.defaultServerHost,
      defaultSecure: defaultSecureEl ? defaultSecureEl.checked : DEFAULTS.defaultSecure,
      requestTimeoutMs: requestTimeout,
      readyTimeoutMs: readyTimeout,
      disableOnFileUrls: disableOnFileUrlsEl ? disableOnFileUrlsEl.checked : DEFAULTS.disableOnFileUrls,
      notifyOnDisconnect: notifyOnDisconnectEl ? notifyOnDisconnectEl.checked : DEFAULTS.notifyOnDisconnect,
      debug: debugEl ? debugEl.checked : DEFAULTS.debug
    };
  }

  if (btnSave) {
    btnSave.addEventListener('click', function () {
      const s = validate();
      if (!s) return;
      browser.storage.local.set({ [KEY]: s }, function () {
        if (browser.runtime.lastError) {
          showToast('Save failed: ' + browser.runtime.lastError.message, true);
          return;
        }
        showToast('Saved.');
      });
    });
  }

  if (btnReset) {
    btnReset.addEventListener('click', function () {
      if (proxyPortEl) proxyPortEl.value = DEFAULTS.proxyPort;
      if (defaultServerPortEl) defaultServerPortEl.value = DEFAULTS.defaultServerPort;
      if (defaultServerHostEl) defaultServerHostEl.value = DEFAULTS.defaultServerHost;
      if (defaultSecureEl) defaultSecureEl.checked = DEFAULTS.defaultSecure;
      if (requestTimeoutMsEl) requestTimeoutMsEl.value = DEFAULTS.requestTimeoutMs;
      if (readyTimeoutMsEl) readyTimeoutMsEl.value = DEFAULTS.readyTimeoutMs;
      if (disableOnFileUrlsEl) disableOnFileUrlsEl.checked = DEFAULTS.disableOnFileUrls;
      if (notifyOnDisconnectEl) notifyOnDisconnectEl.checked = DEFAULTS.notifyOnDisconnect;
      if (debugEl) debugEl.checked = DEFAULTS.debug;
      browser.storage.local.set({ [KEY]: DEFAULTS }, function () {
        if (browser.runtime.lastError) {
          showToast('Reset failed: ' + browser.runtime.lastError.message, true);
          return;
        }
        showToast('Reset to defaults.');
      });
    });
  }

    const installCaBtn = document.getElementById('installCaBtn');
  if (installCaBtn) {
    installCaBtn.addEventListener('click', function () {
      showToast('Installing...');
      browser.runtime.sendMessage(
        { target: 'holesail-native', action: 'send', payload: { type: 'installRootCA', payload: {} } },
        function (response) {
          if (browser.runtime.lastError) {
            showToast('Error: ' + browser.runtime.lastError.message, true);
            return;
          }
          showToast(response && response.ok ? 'Root CA installed (or already installed).' : (response && response.error ? response.error : 'Failed'), !!(response && !response.ok));
        }
      );
    });
  }

  load();
})();