/* ToolsOfIndia.com - Shared JavaScript */
(function() {
  'use strict';

  // Format number with commas (Indian numbering)
  window.formatIndian = function(num) {
    if (num === undefined || num === null || isNaN(num)) return '0';
    num = Number(num);
    const parts = num.toFixed(2).split('.');
    let intPart = parts[0];
    const lastThree = intPart.slice(-3);
    const rest = intPart.slice(0, -3);
    if (rest) {
      intPart = rest.replace(/\B(?=(\d{2})+(?!\d))/g, ',') + ',' + lastThree;
    }
    return '\u20B9' + intPart + '.' + parts[1];
  };

  // Format plain number with commas (Indian)
  window.formatNumber = function(num) {
    if (num === undefined || num === null || isNaN(num)) return '0';
    num = Math.round(num);
    const str = String(num);
    const lastThree = str.slice(-3);
    const rest = str.slice(0, -3);
    if (rest) return rest.replace(/\B(?=(\d{2})+(?!\d))/g, ',') + ',' + lastThree;
    return str;
  };

  // Format percentage
  window.formatPct = function(val) {
    return Number(val).toFixed(2) + '%';
  };

  // Show toast notification
  window.showToast = function(msg, type) {
    type = type || 'success';
    const div = document.createElement('div');
    div.className = 'toast ' + type;
    div.textContent = msg;
    document.body.appendChild(div);
    setTimeout(function() { div.remove(); }, 3000);
  };

  // Copy to clipboard
  window.copyText = function(text) {
    if (navigator.clipboard && navigator.clipboard.writeText) {
      navigator.clipboard.writeText(text).then(function() {
        showToast('Copied!');
      }).catch(function() {
        fallbackCopy(text);
      });
    } else {
      fallbackCopy(text);
    }
  };
  function fallbackCopy(text) {
    const ta = document.createElement('textarea');
    ta.value = text;
    ta.style.position = 'fixed';
    ta.style.left = '-9999px';
    document.body.appendChild(ta);
    ta.select();
    document.execCommand('copy');
    document.body.removeChild(ta);
    showToast('Copied!');
  }

  // Get URL params
  window.getParam = function(name) {
    const url = new URL(window.location.href);
    return url.searchParams.get(name);
  };

  // Update range slider display
  document.addEventListener('input', function(e) {
    if (e.target.matches('input[type="range"]')) {
      const display = e.target.closest('.form-group').querySelector('.range-value');
      if (display) display.textContent = e.target.value;
    }
  });

  // Category filter on homepage
  var catBtns = document.querySelectorAll('.category-btn');
  catBtns.forEach(function(btn) {
    btn.addEventListener('click', function() {
      catBtns.forEach(function(b) { b.classList.remove('active'); });
      this.classList.add('active');
      var cat = this.dataset.cat || 'all';
      document.querySelectorAll('.tool-card').forEach(function(card) {
        if (cat === 'all' || card.dataset.cat === cat) {
          card.style.display = 'flex';
        } else {
          card.style.display = 'none';
        }
      });
    });
  });

  // Search filter on homepage
  var searchInput = document.getElementById('toolSearch');
  if (searchInput) {
    searchInput.addEventListener('input', function() {
      var q = this.value.toLowerCase().trim();
      document.querySelectorAll('.tool-card').forEach(function(card) {
        if (!q) { card.style.display = 'flex'; return; }
        var title = (card.querySelector('h3') || {}).textContent || '';
        var desc = (card.querySelector('p') || {}).textContent || '';
        card.style.display = (title + ' ' + desc).toLowerCase().includes(q) ? 'flex' : 'none';
      });
    });
  }

})();