feat: 增加下载分享检查功能

miniprogram/utils/saveImage.ts

@@ -1,3 +1,5 @@
+import { recordDownloadSuccess } from './shareGuide';
+
 const doSaveImage = (canvas: Canvas) => {
     wx.canvasToTempFilePath({
         canvas: canvas,
@@ -6,11 +8,15 @@ const doSaveImage = (canvas: Canvas) => {
         success: (res) => {
             wx.saveImageToPhotosAlbum({
                 filePath: res.tempFilePath,
-                success: () => wx.showToast({
-                    title: '保存成功，请在相册中查看',
-                    icon: 'success',
-                    duration: 2000,
-                }),
+                success: () => {
+                    // 记录下载成功
+                    recordDownloadSuccess();
+                    wx.showToast({
+                        title: '保存成功，请在相册中查看',
+                        icon: 'success',
+                        duration: 2000,
+                    });
+                },
                 // fail: () => wx.showToast({
                 //     title: '保存涂色卡失败，请重试！',
                 //     icon: 'none',
@@ -18,38 +24,37 @@ const doSaveImage = (canvas: Canvas) => {
                 // })
             });
         },
-        fail: (err: any) => {
+        fail: () => {
             wx.showToast({
                 title: '生成涂色卡失败，请重试！',
                 icon: 'none',
                 duration: 2000,
-            })
-        }
+            });
+        },
     });
-}
+};
 
 const requestPhotoPermission = (canvas: Canvas) => {
     wx.authorize({
         scope: 'scope.writePhotosAlbum',
         success: () => doSaveImage(canvas),
-        fail: () => wx.showToast({
-            title: '请在“设置-添加到相册”中开启相册权限以保存涂色卡',
-            icon: 'none',
-            duration: 3000,
-        })
-    })
-}
-
+        fail: () =>
+            wx.showToast({
+                title: '请在“设置-添加到相册”中开启相册权限以保存涂色卡',
+                icon: 'none',
+                duration: 3000,
+            }),
+    });
+};
 
 export const checkAndSaveImage = (canvas: Canvas) => {
     wx.getSetting({
-        success: res => {
+        success: (res) => {
             if (!res.authSetting['scope.writePhotosAlbum']) {
-                requestPhotoPermission(canvas)
+                requestPhotoPermission(canvas);
             } else {
-                doSaveImage(canvas)
+                doSaveImage(canvas);
             }
-        }
-    })
+        },
+    });
 };
-

miniprogram/utils/shareGuide.ts

@@ -0,0 +1,71 @@
+/**
+ * 分享引导工具
+ * 用于控制每日免费下载次数和分享引导
+ */
+
+const STORAGE_KEY_DOWNLOAD_DATE = 'downloadDate';
+const STORAGE_KEY_DOWNLOAD_COUNT = 'downloadCount';
+const STORAGE_KEY_SHARED_DATE = 'sharedDate';
+
+/**
+ * 获取今天的日期字符串（YYYY-MM-DD格式）
+ */
+function getTodayDateString(): string {
+    const today = new Date();
+    const year = today.getFullYear();
+    const month = String(today.getMonth() + 1).padStart(2, '0');
+    const day = String(today.getDate()).padStart(2, '0');
+    return `${year}-${month}-${day}`;
+}
+
+/**
+ * 检查今天是否已经下载过
+ * @returns true表示今天已下载过，false表示今天未下载
+ */
+export function hasDownloadedToday(): boolean {
+    const today = getTodayDateString();
+    const downloadDate = wx.getStorageSync(STORAGE_KEY_DOWNLOAD_DATE);
+    return downloadDate === today;
+}
+
+/**
+ * 记录今天的下载成功
+ */
+export function recordDownloadSuccess(): void {
+    const today = getTodayDateString();
+    wx.setStorageSync(STORAGE_KEY_DOWNLOAD_DATE, today);
+    const count = wx.getStorageSync(STORAGE_KEY_DOWNLOAD_COUNT) || 0;
+    wx.setStorageSync(STORAGE_KEY_DOWNLOAD_COUNT, count + 1);
+}
+
+/**
+ * 检查今天是否已经分享过
+ * @returns true表示今天已分享过，false表示今天未分享
+ */
+export function hasSharedToday(): boolean {
+    const today = getTodayDateString();
+    const sharedDate = wx.getStorageSync(STORAGE_KEY_SHARED_DATE);
+    return sharedDate === today;
+}
+
+/**
+ * 记录今天的分享成功
+ */
+export function recordShareSuccess(): void {
+    const today = getTodayDateString();
+    wx.setStorageSync(STORAGE_KEY_SHARED_DATE, today);
+}
+
+/**
+ * 检查是否需要显示分享引导
+ * @returns true表示需要显示分享引导，false表示不需要
+ */
+export function shouldShowShareGuide(): boolean {
+    // 如果今天已经分享过，不需要显示引导
+    if (hasSharedToday()) {
+        return false;
+    }
+    // 如果今天已经下载过，需要显示引导
+    return hasDownloadedToday();
+}
+