// Config Sidebar - Handles sidebar population and navigation
class ConfigSidebar {
  constructor() {
    this.categoriesList = null;
  }

  populateSidebar() {
    //console.log('ConfigSidebar: Populating sidebar with categories...');
    
    this.categoriesList = document.getElementById('config-categories-list');
    if (!this.categoriesList) {
      console.error('ConfigSidebar: config-categories-list element not found');
      return;
    }

    if (!window.configData || !window.configData.categories) {
      console.error('ConfigSidebar: No config data available for sidebar');
      return;
    }

    this.categoriesList.innerHTML = '';
    
    // Convert categories object to array and sort by ORDER
    const categoriesArray = Object.entries(window.configData.categories).map(([key, value]) => ({
      id: key,
      ...value
    }));
    
    // Sort by ORDER if available, otherwise by title
    categoriesArray.sort(function(a, b) {
      const orderA = parseInt(a.order) || 999;
      const orderB = parseInt(b.order) || 999;
      return orderA - orderB;
    });
    
    var self = this; // Preserve 'this' context
    
    categoriesArray.forEach(function(category) {
      // Backup category has its own top-level page (/backup) which renders
      // these same fields dynamically — hide it from the /config sidebar to
      // avoid two surfaces for the same data.
      if (category.id === 'backup') return;

      const categoryItem = document.createElement('div');
      categoryItem.className = 'category';
      categoryItem.setAttribute('data-category', category.id);
      
      // Use correct icon from our new structure
      const iconName = category.icon || category.id;
      const iconPath = '/icons/config/' + iconName + '.svg';
      
      categoryItem.innerHTML = '<img src="' + iconPath + '" alt="' + category.title + '" style="width: 20px; height: 20px; margin-right: 8px;"/> ' + category.title;
      
      categoryItem.addEventListener('click', function() {
        // Update URL without full page reload
        const url = '/config?=' + category.id;
        window.history.pushState({}, '', url);
        
        // Update active state
        document.querySelectorAll('.category').forEach(function(item) {
          item.classList.remove('active');
        });
        this.classList.add('active');
        
        // Update global category and load dynamically
        window.configCategory = category.id;
        
        // Load config dynamically without page refresh
        if (window.configManager && typeof window.configManager.renderConfig === 'function') {
          window.configManager.renderConfig(category.id);
        }
      });
      
      self.categoriesList.appendChild(categoryItem);
    });
    
    // Set initial active category
    this.setActiveCategory(window.configCategory || 'general');
    
    //console.log('ConfigSidebar: Sidebar populated with ' + categoriesArray.length + ' categories');
  }

  setActiveCategory(categoryId) {
    // Update active state
    document.querySelectorAll('.category').forEach(function(item) {
      item.classList.remove('active');
    });
    var activeItem = document.querySelector('[data-category="' + categoryId + '"]');
    if (activeItem) {
      activeItem.classList.add('active');
    }
  }
}

// Export to global scope
window.ConfigSidebar = ConfigSidebar;