feat: 开发收藏和下载功能

miniprogram/utils/favorites.ts

@@ -0,0 +1,116 @@
+import { getUser } from './auth';
+
+export interface FavoriteRecord {
+    _id: string;
+    userId: string;
+    worksheetId: string;
+    createdAt: string;
+    worksheet?: {
+        _id: string;
+        title: string;
+        subtitle: string;
+        category: string;
+        subcategory: string;
+        ageMin: number;
+        ageMax: number;
+        difficulty: number;
+        previewImg: string;
+        tags: string[];
+    } | null;
+}
+
+/**
+ * 添加收藏
+ */
+export async function addFavorite(worksheetId: string): Promise<boolean> {
+    try {
+        await getUser(); // 确保已登录
+        const res = await wx.cloud.callFunction({
+            name: 'userFavorites',
+            data: { action: 'add', worksheetId },
+        });
+        const result = (res?.result as any) || {};
+        return result.code === 0;
+    } catch (e) {
+        console.error('addFavorite failed', e);
+        return false;
+    }
+}
+
+/**
+ * 取消收藏
+ */
+export async function removeFavorite(worksheetId: string): Promise<boolean> {
+    try {
+        await getUser();
+        const res = await wx.cloud.callFunction({
+            name: 'userFavorites',
+            data: { action: 'remove', worksheetId },
+        });
+        const result = (res?.result as any) || {};
+        return result.code === 0;
+    } catch (e) {
+        console.error('removeFavorite failed', e);
+        return false;
+    }
+}
+
+/**
+ * 获取收藏列表
+ */
+export async function getFavoriteList(
+    page = 1,
+    pageSize = 20,
+): Promise<FavoriteRecord[]> {
+    try {
+        await getUser();
+        const res = await wx.cloud.callFunction({
+            name: 'userFavorites',
+            data: { action: 'list', page, pageSize },
+        });
+        const result = (res?.result as any) || {};
+        return result.code === 0 ? result.data : [];
+    } catch (e) {
+        console.error('getFavoriteList failed', e);
+        return [];
+    }
+}
+
+/**
+ * 检查是否已收藏
+ */
+export async function checkFavorited(worksheetId: string): Promise<boolean> {
+    try {
+        await getUser();
+        const res = await wx.cloud.callFunction({
+            name: 'userFavorites',
+            data: { action: 'check', worksheetId },
+        });
+        const result = (res?.result as any) || {};
+        return result.code === 0 && result.data?.favorited;
+    } catch (e) {
+        console.error('checkFavorited failed', e);
+        return false;
+    }
+}
+
+/**
+ * 批量检查是否已收藏，返回 { worksheetId: true } 的 map
+ */
+export async function batchCheckFavorited(
+    worksheetIds: string[],
+): Promise<Record<string, boolean>> {
+    if (!worksheetIds.length) return {};
+    try {
+        await getUser();
+        const res = await wx.cloud.callFunction({
+            name: 'userFavorites',
+            data: { action: 'batchCheck', worksheetIds },
+        });
+        const result = (res?.result as any) || {};
+        return result.code === 0 ? result.data : {};
+    } catch (e) {
+        console.error('batchCheckFavorited failed', e);
+        return {};
+    }
+}