feat: 下载历史数量限制为 30 条

cloudfunctions/userDownloadLogs/index.js

@@ -62,9 +62,12 @@ async function handleAdd(userId, event) {
     return { code: 0, data: { _id, ...record } };
 }
 
+const MAX_LIST_PAGE_SIZE = 30;
+
 async function handleList(userId, event) {
-    const { page = 1, pageSize = 20 } = event;
-    const skip = (page - 1) * pageSize;
+    const { page = 1, pageSize = MAX_LIST_PAGE_SIZE } = event;
+    const limit = Math.min(Math.max(1, Number(pageSize) || 1), MAX_LIST_PAGE_SIZE);
+    const skip = (page - 1) * limit;
 
     const collection = db.collection('download_logs');
 
@@ -72,7 +75,7 @@ async function handleList(userId, event) {
         .where({ userId })
         .orderBy('createdAt', 'desc')
         .skip(skip)
-        .limit(pageSize)
+        .limit(limit)
         .get();
 
     if (logs.length === 0) {