import { html } from '@design.estate/dees-element';
import { icons, type IconWithPrefix } from './dees-icon.js';
import * as lucideIcons from 'lucide';

export const demoFunc = () => {
  // Group FontAwesome icons by type
  const faIcons = Object.keys(icons.fa);
  
  // Extract Lucide icons from the lucideIcons object directly
  // Log the first few keys to understand the structure
  console.log('First few Lucide keys:', Object.keys(lucideIcons).slice(0, 5));
  
  // Get all icon functions from lucideIcons (they have PascalCase names)
  const lucideIconsList = Object.keys(lucideIcons)
    .filter(key => {
      // Skip utility functions and focus on icon components (first letter is uppercase)
      const isUppercaseFirst = key[0] === key[0].toUpperCase() && key[0] !== key[0].toLowerCase();
      const isFunction = typeof lucideIcons[key] === 'function';
      const notUtility = !['createElement', 'createIcons', 'default'].includes(key);
      return isFunction && isUppercaseFirst && notUtility;
    })
    .map(pascalName => {
      // Convert PascalCase to camelCase
      return pascalName.charAt(0).toLowerCase() + pascalName.slice(1);
    });
  
  // Log how many icons we found
  console.log(`Found ${lucideIconsList.length} Lucide icons`);
  
  // If we didn't find any, try an alternative approach
  if (lucideIconsList.length === 0) {
    console.log('Trying alternative approach to find Lucide icons');
    
    // Try to get icon names from a known property if available
    if (lucideIcons.icons) {
      const iconSource = lucideIcons.icons || {};
      lucideIconsList.push(...Object.keys(iconSource));
      console.log(`Found ${lucideIconsList.length} icons via alternative method`);
    }
  }

  // Define the functions in TS scope instead of script tags
  const searchIcons = (event: InputEvent) => {
    const searchTerm = (event.target as HTMLInputElement).value.toLowerCase().trim();
    // Get the demo container first, then search within it
    const demoContainer = (event.target as HTMLElement).closest('.demoContainer');
    const containers = demoContainer.querySelectorAll('.iconContainer');
    
    containers.forEach(container => {
      const iconName = container.getAttribute('data-name');
      
      if (searchTerm === '') {
        container.classList.remove('hidden');
      } else if (iconName && iconName.includes(searchTerm)) {
        container.classList.remove('hidden');
      } else {
        container.classList.add('hidden');
      }
    });
    
    // Update counts - search within demoContainer
    demoContainer.querySelectorAll('.section-container').forEach(section => {
      const visibleIcons = section.querySelectorAll('.iconContainer:not(.hidden)').length;
      const countElement = section.querySelector('.icon-count');
      if (countElement) {
        const totalIconsCount = section.classList.contains('fa-section') 
          ? faIcons.length 
          : lucideIconsList.length;
        
        countElement.textContent = visibleIcons === totalIconsCount 
          ? `${totalIconsCount} icons` 
          : `${visibleIcons} of ${totalIconsCount} icons`;
      }
    });
  };
  
  const copyIconName = (iconNameToCopy: string, type: 'fa' | 'lucide') => {
    // Use the new prefix format
    const textToCopy = `${type}:${iconNameToCopy}`;
    
    navigator.clipboard.writeText(textToCopy).then(() => {
      // Find the event target
      const currentEvent = window.event as MouseEvent;
      const currentTarget = currentEvent.currentTarget as HTMLElement;
      // Show feedback
      const tooltip = currentTarget.querySelector('.copy-tooltip');
      if (tooltip) {
        tooltip.textContent = 'Copied!';
        
        setTimeout(() => {
          tooltip.textContent = 'Click to copy';
        }, 2000);
      }
    });
  };

  return html`
  <style>
    .demoContainer {
      width: 100%;
      box-sizing: border-box;
      display: flex;
      flex-wrap: wrap;
      background: #111111;
      padding: 20px;
      font-size: 30px;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    }
    
    .search-container {
      width: 100%;
      margin-bottom: 20px;
      display: flex;
    }
    
    #iconSearch {
      flex: 1;
      padding: 12px 16px;
      font-size: 16px;
      border: none;
      border-radius: 4px;
      background: #222;
      color: #fff;
      border: 1px solid #333;
    }
    
    #iconSearch:focus {
      outline: none;
      border-color: #e4002b;
    }
    
    dees-icon {
      transition: all 0.2s ease;
      color: #ffffff;
    }

    .iconContainer {
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 20px 16px 0px 16px;
      border: 1px solid #333333;
      margin-right: 10px;
      margin-bottom: 10px;
      border-radius: 4px;
      transition: background-color 0.2s;
      cursor: pointer;
      position: relative;
    }
    
    .iconContainer:hover {
      background-color: #222;
    }

    .iconName {
      font-size: 12px;
      text-align: center;
      color: #ccc;
      background: #333333;
      padding: 6px 10px;
      margin-left: -16px;
      margin-right: -16px;
      margin-top: 20px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 120px;
      border-radius: 0 0 4px 4px;
    }

    .section-title {
      width: 100%;
      color: #ffffff;
      font-size: 24px;
      margin: 20px 0;
      padding-bottom: 10px;
      border-bottom: 1px solid #333333;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    
    .api-note {
      font-size: 14px;
      color: #e4002b;
      margin-bottom: 20px;
      padding: 10px;
      border: 1px solid #e4002b;
      border-radius: 4px;
      background: rgba(228, 0, 43, 0.1);
    }
    
    .icon-count {
      font-size: 14px;
      color: #888;
      font-weight: normal;
      background: #222;
      padding: 5px 10px;
      border-radius: 20px;
    }
    
    .icons-grid {
      display: flex;
      flex-wrap: wrap;
      width: 100%;
    }
    
    .section-container {
      width: 100%;
      margin-bottom: 30px;
    }
    
    .copy-tooltip {
      position: absolute;
      background: #333;
      color: white;
      padding: 5px 10px;
      border-radius: 4px;
      font-size: 12px;
      top: -30px;
      opacity: 0;
      transition: opacity 0.3s;
      pointer-events: none;
    }
    
    .iconContainer:hover .copy-tooltip {
      opacity: 1;
    }

    .iconContainer:hover dees-icon {
      transform: scale(1.1);
    }
    
    .hidden {
      display: none !important;
    }
  </style>
  
  <div class="demoContainer">
    <div class="search-container">
      <input type="text" id="iconSearch" placeholder="Search icons..." @input=${searchIcons}>
    </div>
    
    <div class="api-note">
      New API: Use <code>icon="fa:iconName"</code> or <code>icon="lucide:iconName"</code> instead of <code>iconFA</code>. 
      Click any icon to copy its new format to clipboard.
    </div>
    
    <div class="section-container fa-section">
      <div class="section-title">
        FontAwesome Icons
        <span class="icon-count">${faIcons.length} icons</span>
      </div>
      <div class="icons-grid">
        ${faIcons.map(
          (iconName) => {
            const prefixedName = `fa:${iconName}`;
            return html`
              <div class="iconContainer fa-icon" data-name=${iconName.toLowerCase()} @click=${() => copyIconName(iconName, 'fa')}>
                <dees-icon .icon=${prefixedName as IconWithPrefix} iconSize="24"></dees-icon>
                <div class="iconName">${iconName}</div>
                <span class="copy-tooltip">Click to copy</span>
              </div>
            `;
          }
        )}
      </div>
    </div>

    <div class="section-container lucide-section">
      <div class="section-title">
        Lucide Icons
        <span class="icon-count">${lucideIconsList.length} icons</span>
      </div>
      <div class="icons-grid">
        ${lucideIconsList.map(
          (iconName) => {
            const prefixedName = `lucide:${iconName}`;
            return html`
              <div class="iconContainer lucide-icon" data-name=${iconName.toLowerCase()} @click=${() => copyIconName(iconName, 'lucide')}>
                <dees-icon .icon=${prefixedName as IconWithPrefix} iconSize="24"></dees-icon>
                <div class="iconName">${iconName}</div>
                <span class="copy-tooltip">Click to copy</span>
              </div>
            `;
          }
        )}
      </div>
    </div>
  </div>
  `;
};