feat: 实现批量下载功能

entrypoints/popup/main.ts

@@ -1,5 +1,6 @@
 import './style.css';
 import type { PinData } from '../../components/pin-collector';
+import { startBatchDownload } from '../background';
 
 document.querySelector<HTMLDivElement>('#app')!.innerHTML = `
   <div class="popup">
@@ -10,11 +11,6 @@ document.querySelector<HTMLDivElement>('#app')!.innerHTML = `
       <button id="start-btn">▶ 开始加载</button>
       <button id="stop-btn">⏹ 停止</button>
     </div>
-    <div class="download-options">
-      <label>
-        并行数: <input type="number" id="concurrency" value="5" min="1" max="20" style="width:50px" />
-      </label>
-    </div>
     <div id="status"></div>
     <div id="pinList"></div>
   </div>
@@ -24,19 +20,18 @@ document.querySelector<HTMLDivElement>('#app')!.innerHTML = `
 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 browser.storage.local.set({ collectedPins: response.pins });
-      // renderPins(response.pins as PinData[]);
-      await loadAndRender();
-      showStatus(`✅ 已收集 ${response.count} 个 Pin`, 'success');
+    await loadAndRender();
+
+    // 下载
+    const result = (await browser.storage.local.get('collectedPins')) as {
+      collectedPins?: PinData[];
+    };
+    const pins: PinData[] = result.collectedPins || [];
+    if (pins.length > 0) {
+      showStatus(`开始下载 ${pins.length} 张...`, 'info');
+      browser.runtime.sendMessage({ type: 'DOWNLOAD_PINS', pins, concurrency: 3 });
+    } else {
+      showStatus('没有可下载的图片', 'error');
     }
   } catch (e) {
     const errMsg = e instanceof Error ? e.message : String(e);
@@ -126,4 +121,11 @@ browser.runtime.onMessage.addListener(async (msg) => {
         `✅ 加载完成 · 共 ${msg.totalItems} 条`;
     }
   }
+  if (msg.type === 'DOWNLOAD_DONE') {
+    showStatus(
+      `✅ 下载完成: ${msg.success}/${msg.total}` +
+        (msg.failed > 0 ? ` (${msg.failed} 失败)` : ''),
+      'success'
+    );
+  }
 });