/**
 * ds-token-list.js
 * Design token listing and management
 * View, edit, and validate design tokens
 */

import contextStore from '../../stores/context-store.js';

export default class TokenList extends HTMLElement {
  constructor() {
    super();
    this.tokens = [
      { id: 'color-primary', name: 'Primary Color', category: 'Colors', value: '#0066CC', usage: 156 },
      { id: 'color-success', name: 'Success Color', category: 'Colors', value: '#4caf50', usage: 89 },
      { id: 'color-error', name: 'Error Color', category: 'Colors', value: '#f44336', usage: 76 },
      { id: 'color-warning', name: 'Warning Color', category: 'Colors', value: '#ff9800', usage: 54 },
      { id: 'spacing-xs', name: 'Extra Small Spacing', category: 'Spacing', value: '4px', usage: 234 },
      { id: 'spacing-sm', name: 'Small Spacing', category: 'Spacing', value: '8px', usage: 312 },
      { id: 'spacing-md', name: 'Medium Spacing', category: 'Spacing', value: '16px', usage: 445 },
      { id: 'spacing-lg', name: 'Large Spacing', category: 'Spacing', value: '24px', usage: 198 },
      { id: 'font-body', name: 'Body Font', category: 'Typography', value: 'Inter, sans-serif', usage: 678 },
      { id: 'font-heading', name: 'Heading Font', category: 'Typography', value: 'Poppins, sans-serif', usage: 234 },
    ];
    this.selectedCategory = 'All';
    this.editingTokenId = null;
  }

  connectedCallback() {
    this.render();
    this.setupEventListeners();
  }

  render() {
    this.innerHTML = `
      <div style="padding: 24px; height: 100%; overflow-y: auto;">
        <div style="margin-bottom: 24px; display: flex; justify-content: space-between; align-items: start;">
          <div>
            <h1 style="margin: 0 0 8px 0; font-size: 24px;">Design Tokens</h1>
            <p style="margin: 0; color: var(--vscode-text-dim);">
              Manage and track design token usage across the system
            </p>
          </div>
          <button id="export-btn" style="
            padding: 8px 16px;
            background: var(--vscode-button-background);
            color: var(--vscode-button-foreground);
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 500;
            font-size: 12px;
          ">⬇️ Export Tokens</button>
        </div>

        <!-- Category Filter -->
        <div style="margin-bottom: 24px; display: flex; gap: 8px; flex-wrap: wrap;">
          ${['All', 'Colors', 'Spacing', 'Typography', 'Shadows', 'Borders'].map(cat => `
            <button class="filter-btn" data-category="${cat}" style="
              padding: 6px 12px;
              background: ${this.selectedCategory === cat ? 'var(--vscode-selection)' : 'var(--vscode-sidebar)'};
              color: var(--vscode-foreground);
              border: 1px solid ${this.selectedCategory === cat ? 'var(--vscode-focusBorder)' : 'var(--vscode-border)'};
              border-radius: 4px;
              cursor: pointer;
              font-size: 12px;
              font-weight: 500;
            ">${cat}</button>
          `).join('')}
        </div>

        <!-- Token Table -->
        <div style="background: var(--vscode-sidebar); border: 1px solid var(--vscode-border); border-radius: 4px; overflow: hidden;">
          <div style="display: grid; grid-template-columns: 2fr 1fr 1fr 0.8fr 0.8fr; gap: 0; font-size: 11px; font-weight: 600; background: var(--vscode-bg); border-bottom: 1px solid var(--vscode-border); padding: 12px; color: var(--vscode-text-dim); text-transform: uppercase; letter-spacing: 0.5px;">
            <div>Token Name</div>
            <div>Category</div>
            <div>Value</div>
            <div>Usage</div>
            <div>Actions</div>
          </div>

          <div id="tokens-container" style="max-height: 500px; overflow-y: auto;">
            ${this.renderTokenRows()}
          </div>
        </div>
      </div>
    `;
  }

  renderTokenRows() {
    const filtered = this.selectedCategory === 'All'
      ? this.tokens
      : this.tokens.filter(t => t.category === this.selectedCategory);

    return filtered.map(token => `
      <div style="
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 0.8fr 0.8fr;
        gap: 0;
        align-items: center;
        padding: 12px;
        border-bottom: 1px solid var(--vscode-border);
        font-size: 12px;
      ">
        <div>
          <div style="font-weight: 500; margin-bottom: 2px;">${token.name}</div>
          <div style="font-size: 10px; color: var(--vscode-text-dim); font-family: monospace;">
            ${token.id}
          </div>
        </div>
        <div style="color: var(--vscode-text-dim); font-size: 11px;">
          ${token.category}
        </div>
        <div style="font-family: monospace; background: var(--vscode-bg); padding: 4px 6px; border-radius: 2px;">
          ${token.value}
        </div>
        <div style="text-align: center; color: var(--vscode-text-dim);">
          ${token.usage}
        </div>
        <div style="display: flex; gap: 4px;">
          <button class="edit-token-btn" data-token-id="${token.id}" style="
            padding: 3px 8px;
            background: var(--vscode-button-secondaryBackground);
            color: var(--vscode-button-secondaryForeground);
            border: none;
            border-radius: 2px;
            cursor: pointer;
            font-size: 10px;
          ">Edit</button>
          <button class="copy-token-btn" data-token-value="${token.value}" style="
            padding: 3px 8px;
            background: var(--vscode-button-secondaryBackground);
            color: var(--vscode-button-secondaryForeground);
            border: none;
            border-radius: 2px;
            cursor: pointer;
            font-size: 10px;
          ">Copy</button>
        </div>
      </div>
    `).join('');
  }

  setupEventListeners() {
    // Filter buttons
    this.querySelectorAll('.filter-btn').forEach(btn => {
      btn.addEventListener('click', () => {
        this.selectedCategory = btn.dataset.category;
        this.render();
        this.setupEventListeners();
      });
    });

    // Export button
    const exportBtn = this.querySelector('#export-btn');
    if (exportBtn) {
      exportBtn.addEventListener('click', () => {
        const tokenData = JSON.stringify(this.tokens, null, 2);
        const blob = new Blob([tokenData], { type: 'application/json' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = 'design-tokens.json';
        a.click();
        URL.revokeObjectURL(url);
      });
    }

    // Edit token buttons
    this.querySelectorAll('.edit-token-btn').forEach(btn => {
      btn.addEventListener('click', () => {
        const tokenId = btn.dataset.tokenId;
        const token = this.tokens.find(t => t.id === tokenId);
        this.dispatchEvent(new CustomEvent('edit-token', {
          detail: { token },
          bubbles: true,
          composed: true
        }));
      });
    });

    // Copy token buttons
    this.querySelectorAll('.copy-token-btn').forEach(btn => {
      btn.addEventListener('click', () => {
        const value = btn.dataset.tokenValue;
        navigator.clipboard.writeText(value).then(() => {
          const originalText = btn.textContent;
          btn.textContent = '✓ Copied';
          setTimeout(() => {
            btn.textContent = originalText;
          }, 1500);
        });
      });
    });
  }
}

customElements.define('ds-token-list', TokenList);