// Browser-side script of the Content Editor editor page.
// Inlined into the HTML template at render time by content-editor.js.
// Test coverage: scripts/test-content-editor-serializer.js runs this exact code.

// ── Render ──────────────────────────────────────────────────────────────────

function render(obj, container) {
  container.innerHTML = '';
  renderObject(obj, container, '');
}

function renderObject(obj, container, prefix) {
  for (const [key, val] of Object.entries(obj)) {
    const path = prefix ? prefix + '.' + key : key;
    if (Array.isArray(val)) {
      renderArray(key, val, container, path);
    } else if (typeof val === 'object' && val !== null) {
      renderObject(val, container, path);
    } else {
      renderPrimitive(path, val, container);
    }
  }
}

function renderPrimitive(path, val, container) {
  const isLong = String(val).length > 80 || String(val).includes('<');
  const div = document.createElement('div');
  div.className = 'field';
  const type = val === null ? 'null' : typeof val;
  let control;
  if (type === 'boolean') {
    control = `<input type="checkbox" data-path="${path}" data-type="boolean" ${val ? 'checked' : ''}>`;
  } else if (type === 'number') {
    control = `<input type="number" data-path="${path}" data-type="number" value="${esc(val)}">`;
  } else {
    control = isLong
      ? `<textarea data-path="${path}" data-type="${type}" rows="${Math.min(8,Math.max(2,Math.ceil(String(val).length/80)))}">${esc(val ?? '')}<\/textarea>`
      : `<input type="text" data-path="${path}" data-type="${type}" value="${esc(val ?? '')}">`;
  }
  div.innerHTML = `
    <label>${path}</label>
    ${control}
  `;
  container.appendChild(div);
}

function renderArray(key, arr, container, path) {
  const section = document.createElement('div');
  section.className = 'array-section';
  section.dataset.arrayPath = path;

  const label = document.createElement('div');
  label.className = 'array-label';
  label.textContent = path;
  section.appendChild(label);

  const items = document.createElement('div');
  items.className = 'array-items';
  items.dataset.arrayItems = path;
  section.appendChild(items);

  arr.forEach((item, i) => {
    if (typeof item === 'object' && item !== null) {
      items.appendChild(makeObjCard(item, i, path));
    } else {
      items.appendChild(makeStrItem(item, i, path));
    }
  });

  // Template for adding new items
  const sample = arr.length > 0 ? arr[arr.length - 1] : '';
  const isObj = typeof sample === 'object' && sample !== null;

  const addBtn = document.createElement('button');
  addBtn.className = 'btn-add';
  addBtn.textContent = '➕ Új elem hozzáadása';
  addBtn.onclick = () => {
    const idx = items.children.length;
    if (isObj) {
      const blank = blankLike(sample);
      items.appendChild(makeObjCard(blank, idx, path));
    } else {
      items.appendChild(makeStrItem('', idx, path));
    }
    reindexItems(items);
  };
  section.appendChild(addBtn);
  container.appendChild(section);
}

function blankLike(value) {
  if (Array.isArray(value)) return [];
  if (value && typeof value === 'object') {
    return Object.fromEntries(Object.entries(value).map(([key, child]) => [key, blankLike(child)]));
  }
  if (typeof value === 'boolean') return false;
  if (typeof value === 'number') return 0;
  return '';
}

function makeStrItem(val, idx, path) {
  const wrap = document.createElement('div');
  wrap.className = 'str-item';
  const type = val === null ? 'null' : typeof val;
  const ta = type === 'boolean' ? document.createElement('input') : document.createElement('textarea');
  ta.dataset.path = path + '[' + idx + ']';
  ta.dataset.type = type;
  if (type === 'boolean') {
    ta.type = 'checkbox';
    ta.checked = val;
  } else {
    ta.value = val ?? '';
    ta.rows = Math.min(6, Math.max(2, Math.ceil(String(val ?? '').length / 80)));
  }
  const del = document.createElement('button');
  del.className = 'btn-del';
  del.textContent = '❌';
  del.title = 'Törlés';
  del.onclick = () => { wrap.remove(); reindexItems(wrap.closest('.array-items')); };
  wrap.appendChild(ta);
  wrap.appendChild(del);
  return wrap;
}

function makeObjCard(obj, idx, path) {
  const card = document.createElement('div');
  card.className = 'obj-card';
  const hdr = document.createElement('div');
  hdr.className = 'card-header';
  hdr.textContent = path + '[' + idx + ']';
  card.appendChild(hdr);

  renderObject(obj, card, path + '[' + idx + ']');

  const del = document.createElement('button');
  del.className = 'btn-del-card';
  del.textContent = '❌ Törlés';
  del.onclick = () => { card.remove(); reindexItems(card.closest('.array-items')); };
  card.appendChild(del);
  return card;
}

function reindexItems(itemsEl) {
  if (!itemsEl) return;
  const path = itemsEl.dataset.arrayItems;
  // WHY: rewrite only the index that directly follows THIS array's own path prefix.
  // A generic "replace first [n]" rule corrupts nested arrays (e.g. deleting from
  // services[1].specs.items rewrites the OUTER services index and scatters paths
  // across services[0..n], producing sparse arrays and schema errors).
  const prefix = path + '[';
  Array.from(itemsEl.children).forEach((child, i) => {
    child.querySelectorAll('[data-path]').forEach(el => {
      const old = el.dataset.path;
      if (typeof old !== 'string' || !old.startsWith(prefix)) return;
      const rest = old.slice(prefix.length);
      const bracketEnd = rest.indexOf(']');
      const suffix = bracketEnd === -1 ? '' : rest.slice(bracketEnd);
      el.dataset.path = prefix + i + suffix;
    });
    // Update card header
    const hdr = child.querySelector('.card-header');
    if (hdr) hdr.textContent = path + '[' + i + ']';
  });
}

// ── Collect & Save ───────────────────────────────────────────────────────────

function collect() {
  const result = JSON.parse(JSON.stringify(DATA)); // deep clone as base
  // Wipe all arrays so we rebuild them from DOM
  clearArrays(result);

  document.querySelectorAll('[data-path]').forEach(el => {
    setPath(result, el.dataset.path, readValue(el));
  });
  return result;
}

function readValue(el) {
  switch (el.dataset.type) {
    case 'boolean': return el.checked;
    case 'number': return Number(el.value);
    case 'null': return el.value === '' ? null : el.value;
    default: return el.value;
  }
}

function clearArrays(obj) {
  for (const k of Object.keys(obj)) {
    if (Array.isArray(obj[k])) obj[k] = [];
    else if (typeof obj[k] === 'object' && obj[k] !== null) clearArrays(obj[k]);
  }
}

function setPath(obj, path, value) {
  const parts = parsePath(path);
  let cur = obj;
  for (let i = 0; i < parts.length - 1; i++) {
    const part = parts[i];
    if (cur[part] === undefined || cur[part] === null) {
      cur[part] = typeof parts[i + 1] === 'number' ? [] : {};
    }
    cur = cur[part];
  }
  cur[parts[parts.length - 1]] = value;
}

function parsePath(path) {
  const parts = [];
  let token = '';
  let inIndex = false;
  for (const char of path) {
    if (char === '.') {
      if (!inIndex && token) parts.push(token);
      token = '';
    } else if (char === '[') {
      if (token) parts.push(token);
      token = '';
      inIndex = true;
    } else if (char === ']') {
      parts.push(Number(token));
      token = '';
      inIndex = false;
    } else {
      token += char;
    }
  }
  if (token) parts.push(token);
  return parts;
}

async function save() {
  const data = collect();
  const res = await fetch('/save?file=' + FILE, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': CSRF_TOKEN, 'X-Content-Hash': CONTENT_HASH },
    body: JSON.stringify(data, null, 2)
  });
  if (res.status === 401) { location.href = '/login'; return; }
  if (res.status === 409) {
    if (confirm('A tartalom megváltozott, mióta ez a lap megnyílt (pl. deploy vagy másik fül mentett).\n\nOK = lap frissítése az új tartalommal (a szerkesztésed elvész)\nMégse = maradsz ezen a lapon, a mentés nem történt meg.')) {
      location.reload();
    }
    return;
  }
  const json = await res.json();
  const status = document.getElementById('saveStatus');
  if (json.ok) {
    status.textContent = '✅ Mentve!';
    status.style.color = '#10b981';
  } else {
    status.textContent = '❌ Hiba: ' + json.error;
    status.style.color = '#f87171';
  }
  status.style.display = 'inline';
  setTimeout(() => status.style.display = 'none', 3000);
}

async function publish() {
  const btn = document.getElementById('publishBtn');
  const status = document.getElementById('saveStatus');
  
  // Save first
  await save();
  
  btn.textContent = '⏳ Élesítés folyamatban...';
  btn.disabled = true;
  
  try {
    const res = await fetch('/publish', { method: 'POST', headers: { 'X-CSRF-Token': CSRF_TOKEN } });
    if (res.status === 401) { location.href = '/login'; return; }
    const json = await res.json();
    
    if (json.ok) {
      status.textContent = '🚀 Sikeresen elküldve a szerverre!';
      status.style.color = '#10b981';
    } else {
      status.textContent = '❌ Hiba az élesítésnél: ' + json.error;
      status.style.color = '#f87171';
    }
  } catch (e) {
    status.textContent = '❌ Hálózati hiba';
    status.style.color = '#f87171';
  }
  
  btn.textContent = '🚀 Publikálás & Élesítés';
  btn.disabled = false;
  status.style.display = 'inline';
  setTimeout(() => status.style.display = 'none', 5000);
}

async function logout() {
  if (!confirm('Biztosan ki szeretnél lépni?')) return;
  try {
    // Invalidates the server-side session cookie (Basic Auth cache is not
    // affected — the login page is public, no 401-overwrite is needed).
    await fetch('/logout', { method: 'POST', headers: { 'X-CSRF-Token': CSRF_TOKEN } });
  } catch (e) { /* network error — continue to the login page */ }
  location.href = '/login';
}

function esc(v) {
  return String(v).replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');
}

// Boot
render(DATA, document.getElementById('editor'));

// Auto-dismiss toast
const toast = document.querySelector('.toast');
 if (toast) setTimeout(() => toast.remove(), 3500);