优化产品图片下载为并发下载

.gitignore

@@ -39,3 +39,6 @@ yarn-error.log*
 # typescript
 *.tsbuildinfo
 next-env.d.ts
+
+# public files
+/public/files

utils/data.js

@@ -66,56 +66,126 @@ function extractImageUrlsFromHtml(html) {
 export async function processDataItem(item, downloadFiles) {
     if (!downloadFiles) return item;
 
+    // 收集所有需要下载的文件URL
+    const downloadTasks = [];
+    const downloadMap = new Map(); // 用于存储下载结果
+
+    // 主表字段下载任务
     if (item.image) {
-        item.image = await downloadToLocal(item.image);
+        downloadTasks.push(downloadToLocal(item.image).then(url => downloadMap.set('image', url)));
     }
     if (item.image_1) {
-      item.image_1 = await downloadToLocal(item.image_1);
+        downloadTasks.push(downloadToLocal(item.image_1).then(url => downloadMap.set('image_1', url)));
     }
     if (item.image_2) {
-      item.image_2 = await downloadToLocal(item.image_2);
+        downloadTasks.push(downloadToLocal(item.image_2).then(url => downloadMap.set('image_2', url)));
     }
     if (item.video_src) {
-      item.video_src = await downloadToLocal(item.video_src);
+        downloadTasks.push(downloadToLocal(item.video_src).then(url => downloadMap.set('video_src', url)));
     }
     if (item.file_src) {
-      item.file_src = await downloadToLocal(item.file_src);
+        downloadTasks.push(downloadToLocal(item.file_src).then(url => downloadMap.set('file_src', url)));
     }
 
-    // 处理attachments字段
+    // 处理attachments字段 - 并发下载
     if (item.attachments && Array.isArray(item.attachments)) {
-        for (const attachment of item.attachments) {
+        const attachmentTasks = item.attachments.map(async (attachment, index) => {
             if (attachment.file_url) {
-                attachment.file_url = await downloadToLocal(attachment.file_url);
-            }
+                const url = await downloadToLocal(attachment.file_url);
+                return { index, url };
             }
+            return null;
+        });
+        downloadTasks.push(...attachmentTasks.filter(task => task !== null));
     }
 
+    // 处理items字段 - 并发下载
     if (item.items && Array.isArray(item.items)) {
-        for (const subItem of item.items) {
+        const itemTasks = item.items.map(async (subItem, itemIndex) => {
+            const subItemDownloads = [];
             if (subItem.item_image) {
-                subItem.item_image = await downloadToLocal(subItem.item_image);
+                subItemDownloads.push(downloadToLocal(subItem.item_image).then(url => ({ field: 'item_image', url })));
             }
             if (subItem.item_video_src) {
-              subItem.item_video_src = await downloadToLocal(subItem.item_video_src);
+                subItemDownloads.push(downloadToLocal(subItem.item_video_src).then(url => ({ field: 'item_video_src', url })));
             }
             if (subItem.item_icon) {
-              subItem.item_icon = await downloadToLocal(subItem.item_icon);
-            }
+                subItemDownloads.push(downloadToLocal(subItem.item_icon).then(url => ({ field: 'item_icon', url })));
             }
+            const results = await Promise.all(subItemDownloads);
+            return { itemIndex, results };
+        });
+        downloadTasks.push(...itemTasks);
     }
 
+    // 处理HTML内容中的图片 - 并发下载
+    const htmlTasks = [];
     for (const key of ['content', 'additional_content', 'description', 'p1', 'p2', 'p3']) {
         if (item[key]) {
             const urls = extractImageUrlsFromHtml(item[key]);
-            let html = item[key];
-            for (const url of urls) {
-                const localUrl = await downloadToLocal(url);
-                html = html.replaceAll(url, localUrl);
-            }
-            item[key] = html;
+            if (urls.length > 0) {
+                htmlTasks.push(
+                    Promise.all(urls.map(url => downloadToLocal(url))).then(localUrls => ({
+                        key,
+                        urls,
+                        localUrls
+                    }))
+                );
             }
         }
+    }
+    downloadTasks.push(...htmlTasks);
+
+    // 并发执行所有下载任务
+    await Promise.all(downloadTasks);
+
+    // 更新主表字段
+    if (downloadMap.has('image')) item.image = downloadMap.get('image');
+    if (downloadMap.has('image_1')) item.image_1 = downloadMap.get('image_1');
+    if (downloadMap.has('image_2')) item.image_2 = downloadMap.get('image_2');
+    if (downloadMap.has('video_src')) item.video_src = downloadMap.get('video_src');
+    if (downloadMap.has('file_src')) item.file_src = downloadMap.get('file_src');
+
+    // 更新attachments字段
+    if (item.attachments && Array.isArray(item.attachments)) {
+        const attachmentResults = downloadTasks.filter(task => 
+            task && typeof task === 'object' && 'index' in task
+        );
+        for (const result of attachmentResults) {
+            if (result && item.attachments[result.index]) {
+                item.attachments[result.index].file_url = result.url;
+            }
+        }
+    }
+
+    // 更新items字段
+    if (item.items && Array.isArray(item.items)) {
+        const itemResults = downloadTasks.filter(task => 
+            task && typeof task === 'object' && 'itemIndex' in task
+        );
+        for (const result of itemResults) {
+            if (result && item.items[result.itemIndex]) {
+                for (const fieldResult of result.results) {
+                    item.items[result.itemIndex][fieldResult.field] = fieldResult.url;
+                }
+            }
+        }
+    }
+
+    // 更新HTML内容
+    const htmlResults = downloadTasks.filter(task => 
+        task && typeof task === 'object' && 'key' in task
+    );
+    for (const result of htmlResults) {
+        if (result) {
+            let html = item[result.key];
+            for (let i = 0; i < result.urls.length; i++) {
+                html = html.replaceAll(result.urls[i], result.localUrls[i]);
+            }
+            item[result.key] = html;
+        }
+    }
+
     return item;
 }