fix: 图片保存命名、质量、权限问题

lib/utils/download.dart

@@ -1,40 +1,94 @@
 import 'dart:typed_data';
 
 import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
 import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:saver_gallery/saver_gallery.dart';
 
 class DownloadUtils {
   // 获取存储权限
-  static requestStoragePer() async {
+  static Future<bool> requestStoragePer() async {
-    Map<Permission, PermissionStatus> statuses = await [
+    await Permission.storage.request();
-      Permission.storage,
+    PermissionStatus status = await Permission.storage.status;
-      Permission.photos,
+    if (status == PermissionStatus.denied ||
-    ].request();
+        status == PermissionStatus.permanentlyDenied) {
-    statuses[Permission.storage].toString();
+      SmartDialog.show(
+        useSystem: true,
+        animationType: SmartAnimationType.centerFade_otherSlide,
+        builder: (BuildContext context) {
+          return AlertDialog(
+            title: const Text('提示'),
+            content: const Text('存储权限未授权'),
+            actions: [
+              TextButton(
+                onPressed: () async {
+                  openAppSettings();
+                },
+                child: const Text('去授权'),
+              )
+            ],
+          );
+        },
+      );
+      return false;
+    } else {
+      return true;
+    }
+  }
+
+  // 获取相册权限
+  static Future<bool> requestPhotoPer() async {
+    await Permission.photos.request();
+    PermissionStatus status = await Permission.photos.status;
+    if (status == PermissionStatus.denied ||
+        status == PermissionStatus.permanentlyDenied) {
+      SmartDialog.show(
+        useSystem: true,
+        animationType: SmartAnimationType.centerFade_otherSlide,
+        builder: (BuildContext context) {
+          return AlertDialog(
+            title: const Text('提示'),
+            content: const Text('相册权限未授权'),
+            actions: [
+              TextButton(
+                onPressed: () async {
+                  openAppSettings();
+                },
+                child: const Text('去授权'),
+              )
+            ],
+          );
+        },
+      );
+      return false;
+    } else {
+      return true;
+    }
   }
 
   static Future<bool> downloadImg(String imgUrl,
       {String imgType = 'cover'}) async {
     try {
-      await requestStoragePer();
+      if (!await requestPhotoPer()) {
+        return false;
+      }
       SmartDialog.showLoading(msg: '保存中');
       var response = await Dio()
           .get(imgUrl, options: Options(responseType: ResponseType.bytes));
+      final String imgSuffix = imgUrl.split('.').last;
       String picName =
-          "plpl_${imgType}_${DateTime.now().toString().split('-').join()}";
+          "plpl_${imgType}_${DateTime.now().toString().replaceAll(RegExp(r'[- :]'), '').split('.').first}";
       final SaveResult result = await SaverGallery.saveImage(
         Uint8List.fromList(response.data),
-        quality: 60,
+        name: '$picName.$imgSuffix',
-        name: picName,
         // 保存到 PiliPala文件夹
         androidRelativePath: "Pictures/PiliPala",
         androidExistNotSave: false,
       );
       SmartDialog.dismiss();
       if (result.isSuccess) {
-        await SmartDialog.showToast('「$picName」已保存 ');
+        await SmartDialog.showToast('「${'$picName.$imgSuffix'}」已保存 ');
       }
       return true;
     } catch (err) {