// Utility: fetch wrapper
async function fetchJSON(url) {
  const res = await fetch(url);
  if (!res.ok) throw new Error(`HTTP ${res.status}`);
  return res.json();
}

// Fetch health
async function loadHealth() {
  try {
    const data = await fetchJSON('/health');
    document.getElementById('total-accounts').textContent = data.accounts_total ?? '–';
    document.getElementById('alive-accounts').textContent = data.accounts_alive ?? '–';
  } catch (e) {
    document.getElementById('total-accounts').textContent = 'error';
    document.getElementById('alive-accounts').textContent = 'error';
  }
}

// Fetch models
async function loadModels() {
  const listEl = document.getElementById('model-list');
  try {
    const data = await fetchJSON('/v1/models');
    const models = data.data || [];
    if (models.length === 0) {
      listEl.innerHTML = '<li>No models available</li>';
      return;
    }
    listEl.innerHTML = models.map(m => `<li><strong>${m.id}</strong> <span class="status-badge status-ok">active</span></li>`).join('');
  } catch (e) {
    listEl.innerHTML = '<li class="status-badge status-err">Failed to load models</li>';
  }
}

// Create account
async function createAccount() {
  const btn = document.getElementById('create-btn');
  const msg = document.getElementById('create-msg');
  btn.disabled = true;
  msg.classList.remove('hidden');
  msg.textContent = 'Creating…';
  msg.className = '';
  try {
    const res = await fetch('/admin/create-account', { method: 'POST' });
    const data = await res.json();
    if (res.ok && data.status === 'ok') {
      msg.textContent = '✓ Account created';
      msg.classList.add('status-ok');
      setTimeout(() => { msg.classList.add('hidden'); }, 3000);
      loadHealth();
    } else {
      throw new Error(data.error || 'Unknown error');
    }
  } catch (e) {
    msg.textContent = '✗ ' + e.message;
    msg.classList.add('status-err');
  } finally {
    btn.disabled = false;
  }
}

// SSE Logs
function startLogs() {
  const container = document.getElementById('log-container');
  const evtSource = new EventSource('/admin/logs/stream');
  container.innerHTML = '';
  evtSource.onmessage = (event) => {
    const div = document.createElement('div');
    div.className = 'log-entry';
    div.textContent = event.data;
    container.appendChild(div);
    container.scrollTop = container.scrollHeight;
  };
  evtSource.onerror = () => {
    const div = document.createElement('div');
    div.className = 'log-entry status-err';
    div.textContent = '[SSE connection lost]';
    container.appendChild(div);
    evtSource.close();
  };
}

// Init
document.addEventListener('DOMContentLoaded', () => {
  document.getElementById('create-btn').addEventListener('click', createAccount);
  loadHealth();
  loadModels();
  startLogs();
  // Refresh health every 10s
  setInterval(loadHealth, 10000);
});