/* ============================================================
   Website Checker — app.js
   Global utilities: modals, tabs, auto-dismiss alerts, helpers
   ============================================================ */

'use strict';

/* ── Modal helpers ─────────────────────────────────────────── */
function openModal(id) {
  const el = document.getElementById(id);
  if (el) {
    el.classList.add('open');
    document.body.style.overflow = 'hidden';
    const firstInput = el.querySelector('input:not([type=hidden]), select, textarea');
    if (firstInput) setTimeout(() => firstInput.focus(), 120);
  }
}

function closeModal(id) {
  const el = document.getElementById(id);
  if (el) {
    el.classList.remove('open');
    document.body.style.overflow = '';
  }
}

// Close modal when clicking the backdrop
document.addEventListener('click', (e) => {
  if (e.target.classList.contains('modal-overlay')) {
    e.target.classList.remove('open');
    document.body.style.overflow = '';
  }
});

// Close modal on Escape key
document.addEventListener('keydown', (e) => {
  if (e.key === 'Escape') {
    document.querySelectorAll('.modal-overlay.open').forEach(m => {
      m.classList.remove('open');
      document.body.style.overflow = '';
    });
  }
});

/* ── Tab switching ─────────────────────────────────────────── */
function switchTab(tabId, groupId) {
  const group = groupId
    ? document.getElementById(groupId)
    : document.body;

  group.querySelectorAll('.tab-btn').forEach(b => b.classList.remove('active'));
  group.querySelectorAll('.tab-panel').forEach(p => p.classList.remove('active'));

  const btn = group.querySelector(`[data-tab="${tabId}"]`);
  const panel = document.getElementById(tabId);
  if (btn)   btn.classList.add('active');
  if (panel) panel.classList.add('active');
}

// Wire up tab buttons declared in HTML
document.addEventListener('DOMContentLoaded', () => {
  document.querySelectorAll('.tab-btn[data-tab]').forEach(btn => {
    btn.addEventListener('click', () => {
      const tabId  = btn.dataset.tab;
      const groupId = btn.dataset.group || null;
      switchTab(tabId, groupId);
    });
  });
});

/* ── Auto-dismiss flash messages ───────────────────────────── */
document.addEventListener('DOMContentLoaded', () => {
  document.querySelectorAll('.alert').forEach(alert => {
    setTimeout(() => {
      alert.style.transition = 'opacity 0.5s';
      alert.style.opacity = '0';
      setTimeout(() => alert.remove(), 500);
    }, 5000);
  });
});

/* ── Confirm-delete helper ─────────────────────────────────── */
function confirmDelete(message, formOrUrl) {
  if (!confirm(message || 'Are you sure you want to delete this item?')) return false;
  if (typeof formOrUrl === 'string') {
    window.location.href = formOrUrl;
  } else if (formOrUrl && formOrUrl.submit) {
    formOrUrl.submit();
  }
  return true;
}

/* ── Password visibility toggle ────────────────────────────── */
function togglePasswordVisibility(inputId, btn) {
  const input = document.getElementById(inputId);
  if (!input) return;
  if (input.type === 'password') {
    input.type = 'text';
    if (btn) btn.textContent = '🙈';
  } else {
    input.type = 'password';
    if (btn) btn.textContent = '👁';
  }
}

/* ── Dynamic credential rows (website form) ────────────────── */
function addCredentialRow(containerId) {
  const container = document.getElementById(containerId);
  if (!container) return;
  const index = container.querySelectorAll('.credential-entry').length;
  const row = document.createElement('div');
  row.className = 'credential-entry';
  row.innerHTML = `
    <div class="form-group">
      <label>Label</label>
      <input type="text" name="cred_label[]" placeholder="e.g. Admin Login">
    </div>
    <div class="form-group">
      <label>Username</label>
      <input type="text" name="cred_username[]" placeholder="username">
    </div>
    <div class="form-group">
      <label>Password</label>
      <input type="password" name="cred_password[]" placeholder="••••••••">
    </div>
    <div class="form-group">
      <label>&nbsp;</label>
      <button type="button" class="btn btn-danger btn-sm" onclick="this.closest('.credential-entry').remove()">✕</button>
    </div>
  `;
  container.appendChild(row);
}

/* ── Copy to clipboard ─────────────────────────────────────── */
function copyToClipboard(text, btn) {
  navigator.clipboard.writeText(text).then(() => {
    const original = btn ? btn.textContent : null;
    if (btn) { btn.textContent = '✓ Copied'; btn.disabled = true; }
    setTimeout(() => {
      if (btn) { btn.textContent = original; btn.disabled = false; }
    }, 2000);
  }).catch(() => {
    alert('Copy failed. Please copy manually.');
  });
}

/* ── Progress bar color logic ──────────────────────────────── */
function colorProgressBar(fill, pct) {
  fill.classList.remove('success', 'warning', 'danger');
  if (pct >= 100)     fill.classList.add('success');
  else if (pct >= 50) fill.classList.add('warning');
  else                fill.classList.add('danger');
}

document.addEventListener('DOMContentLoaded', () => {
  document.querySelectorAll('.progress-bar-fill[data-pct]').forEach(fill => {
    const pct = parseInt(fill.dataset.pct, 10);
    fill.style.width = pct + '%';
    colorProgressBar(fill, pct);
  });
});

/* ── Session timeout warning ───────────────────────────────── */
(function sessionWarning() {
  const WARN_BEFORE_MS = 5 * 60 * 1000;  // warn 5 min before expiry
  const SESSION_MS     = 30 * 60 * 1000; // match Flask SESSION_LIFETIME

  let warningTimer = null;
  let expireTimer  = null;

  function resetTimers() {
    clearTimeout(warningTimer);
    clearTimeout(expireTimer);
    warningTimer = setTimeout(() => {
      if (confirm('Your session will expire in 5 minutes. Click OK to stay logged in.')) {
        fetch('/ping', { credentials: 'same-origin' }).catch(() => {});
        resetTimers();
      }
    }, SESSION_MS - WARN_BEFORE_MS);

    expireTimer = setTimeout(() => {
      alert('Your session has expired. You will be redirected to login.');
      window.location.href = '/auth/login';
    }, SESSION_MS);
  }

  ['click', 'keydown', 'mousemove', 'scroll', 'touchstart'].forEach(evt => {
    document.addEventListener(evt, () => resetTimers(), { passive: true });
  });

  resetTimers();
})();

/* ── CSRF helper (reads meta tag set by Flask) ─────────────── */
function getCsrfToken() {
  const meta = document.querySelector('meta[name="csrf-token"]');
  return meta ? meta.content : '';
}

/* ── Auto-inject CSRF token into every static POST form ─────── */
document.addEventListener('DOMContentLoaded', () => {
  const token = getCsrfToken();
  if (!token) return;
  document.querySelectorAll('form').forEach(form => {
    if ((form.getAttribute('method') || '').toLowerCase() !== 'post') return;
    if (form.querySelector('input[name="csrf_token"]')) return;
    const input = document.createElement('input');
    input.type  = 'hidden';
    input.name  = 'csrf_token';
    input.value = token;
    form.appendChild(input);
  });
});

/* ── Generic fetch-based form submit (JSON response) ───────── */
async function submitJson(url, data, method = 'POST') {
  const res = await fetch(url, {
    method,
    headers: {
      'Content-Type': 'application/json',
      'X-Requested-With': 'XMLHttpRequest',
      'X-CSRFToken': getCsrfToken(),
    },
    body: JSON.stringify(data),
    credentials: 'same-origin',
  });
  return res.json();
}