'use strict';

// Cross-browser API namespace (see background.js). No-op in Firefox.
if (typeof browser === 'undefined' || browser == null) {
  var browser = (typeof chrome !== 'undefined' ? chrome : {});
}

const $ = (sel) => document.querySelector(sel);

const MASTER_KEY = 'enabled';
const PROFILES_KEY = 'profiles';

let editingProfileId = null;

// ---- Master toggle ----
async function loadMaster() {
  const { enabled } = await browser.storage.local.get(MASTER_KEY);
  $('#masterToggle').checked = enabled !== false;
  $('#masterLabel').textContent = enabled === false ? 'Disabled' : 'Enabled';
}
$('#masterToggle').addEventListener('change', async (e) => {
  await browser.storage.local.set({ [MASTER_KEY]: e.target.checked });
  $('#masterLabel').textContent = e.target.checked ? 'Enabled' : 'Disabled';
});

// ---- PDF settings: truncate long course descriptions (default ON) ----
async function loadPdfSettings() {
  const s = await browser.storage.local.get(['truncateDescription', 'showYearLevel', 'customYearLevel']);
  $('#truncateToggle').checked = s.truncateDescription !== false;
  $('#showYearToggle').checked = s.showYearLevel !== false;
  $('#customYear').value = s.customYearLevel || '';
}
$('#truncateToggle').addEventListener('change', async (e) => {
  await browser.storage.local.set({ truncateDescription: e.target.checked });
});
$('#showYearToggle').addEventListener('change', async (e) => {
  await browser.storage.local.set({ showYearLevel: e.target.checked });
});
$('#customYear').addEventListener('change', async (e) => {
  await browser.storage.local.set({ customYearLevel: e.target.value.trim() });
});

// ---- Profiles ----
async function getProfiles() {
  const { profiles } = await browser.storage.local.get(PROFILES_KEY);
  return profiles || [];
}
async function saveProfiles(profiles) {
  await browser.storage.local.set({ [PROFILES_KEY]: profiles });
}

function renderProfiles(profiles) {
  const list = $('#profileList');
  list.innerHTML = '';
  for (const p of profiles) {
    const li = document.createElement('li');
    const name = document.createElement('div');
    name.className = 'name';
    name.innerHTML = '<strong>' + escapeHtml(p.name) + '</strong><br><span class="user">' + escapeHtml(p.username) + '</span>';
    const toggle = document.createElement('input');
    toggle.type = 'checkbox';
    toggle.checked = !!p.enabled;
    toggle.title = 'Enable/disable';
    toggle.addEventListener('change', async () => {
      if (toggle.checked) {
        profiles.forEach((x) => { x.enabled = x.id === p.id; });
      } else {
        p.enabled = false;
      }
      await saveProfiles(profiles);
      renderProfiles(await getProfiles());
    });
    const edit = document.createElement('button');
    edit.className = 'btn';
    edit.textContent = 'Edit';
    edit.addEventListener('click', () => openProfileForm(p));
    const del = document.createElement('button');
    del.className = 'btn';
    del.textContent = 'Delete';
    del.addEventListener('click', async () => {
      await saveProfiles(profiles.filter((x) => x.id !== p.id));
      renderProfiles(await getProfiles());
    });
    li.append(toggle, name, edit, del);
    list.appendChild(li);
  }
}

function escapeHtml(s) {
  return String(s).replace(/[&<>"']/g, (c) => ({
    '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;'
  }[c]));
}

function openProfileForm(p) {
  editingProfileId = p ? p.id : null;
  $('#pName').value = p ? p.name : '';
  $('#pUsername').value = p ? p.username : '';
  $('#pPassword').value = p ? p.password : '';
  $('#pEnabled').checked = p ? !!p.enabled : true;
  $('#profileForm').hidden = false;
}
$('#addProfile').addEventListener('click', () => openProfileForm(null));
$('#cancelProfile').addEventListener('click', () => { $('#profileForm').hidden = true; });
$('#saveProfile').addEventListener('click', async () => {
  const profiles = await getProfiles();
  const data = {
    id: editingProfileId || Date.now().toString(),
    name: $('#pName').value.trim(),
    username: $('#pUsername').value.trim(),
    password: $('#pPassword').value,
    enabled: $('#pEnabled').checked
  };
  if (!data.name || !data.username) return;
  if (editingProfileId) {
    const i = profiles.findIndex((x) => x.id === editingProfileId);
    if (i >= 0) profiles[i] = data;
  } else {
    profiles.push(data);
  }
  await saveProfiles(profiles);
  $('#profileForm').hidden = true;
  renderProfiles(profiles);
});

// ---- Init ----
(async function init() {
  await loadMaster();
  await loadPdfSettings();
  renderProfiles(await getProfiles());
})();