import './style.css';
import type { PinData } from '../../components/pin-collector';

document.querySelector<HTMLDivElement>('#app')!.innerHTML = `
  <div class="popup">
    <h2>🎨 画板收集器</h2>
    <div class="actions">
      <button id="collectBtn">📥 收集</button>
      <button id="clearBtn">🗑 清空</button>
    </div>
    <div id="status"></div>
    <div id="pinList"></div>
  </div>
`;

// 按钮事件
document.getElementById('collectBtn')!.addEventListener('click', async () => {
  showStatus('收集中...', 'info');
  try {
    const [tab] = await browser.tabs.query({ active: true, currentWindow: true });
    if (!tab?.id) {
      showStatus('无法获取当前标签页', 'error');
      return;
    }
    const response = await browser.tabs.sendMessage(tab.id, {
      type: 'COLLECT_PINS',
    });
    if (response?.success) {
      await loadAndRender();
      showStatus(`✅ 已收集 ${response.count} 个 Pin`, 'success');
    }
  } catch {
    showStatus('请在花瓣网页面使用此功能', 'error');
  }
});

document.getElementById('clearBtn')!.addEventListener('click', async () => {
  await browser.storage.local.remove('collectedPins');
  renderPins([]);
  showStatus('已清空', 'info');
});

// 首次打开 popup 时加载并渲染
loadAndRender();

// ---- 辅助函数 ----

async function loadAndRender(): Promise<void> {
  const result = (await browser.storage.local.get('collectedPins')) as {
    collectedPins?: PinData[];
  };
  const pins: PinData[] = result.collectedPins || [];
  renderPins(pins);
}


function renderPins(pins: PinData[]): void {
  const listEl = document.getElementById('pinList')!;
  if (pins.length === 0) {
    listEl.innerHTML = '<p class="empty">暂无收集的图片</p>';
    return;
  }
  listEl.innerHTML = pins
    .map(
      (pin) => `
    <div class="pin-item">
      <img src="${pin.imgSrc}" loading="lazy" alt="${escapeHtml(pin.alt)}" />
      <div class="pin-info">
        <div class="pin-author">${escapeHtml(pin.author || '未知作者')} · ${escapeHtml(pin.time || '')}</div>
        <div class="pin-tags">${pin.tags.map(t => `#${escapeHtml(t)}`).join(' ')}</div>
        <a class="pin-link" href="https://huaban.com${pin.url}" target="_blank">查看原图</a>
      </div>
    </div>
  `
    )
    .join('');
}

function showStatus(msg: string, type: 'info' | 'success' | 'error'): void {
  const statusEl = document.getElementById('status')!;
  statusEl.textContent = msg;
  statusEl.className = `status ${type}`;
  setTimeout(() => (statusEl.textContent = ''), 3000);
}

function escapeHtml(str: string): string {
  const div = document.createElement('div');
  div.textContent = str;
  return div.innerHTML;
}