save uploaded file

Author: Notsfsssf

lib/page/novel/viewer/image_text.dart

@@ -14,13 +14,17 @@
  *
  */
 
+import 'dart:typed_data';
+
 import 'package:dio/dio.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
+import 'package:pixez/er/hoster.dart';
 import 'package:pixez/component/pixiv_image.dart';
 import 'package:pixez/er/leader.dart';
 import 'package:pixez/er/lprinter.dart';
 import 'package:pixez/i18n.dart';
+import 'package:pixez/main.dart';
 import 'package:pixez/models/illust.dart';
 import 'package:pixez/models/novel_web_response.dart';
 import 'package:pixez/network/api_client.dart';
@@ -37,10 +41,92 @@ class UploadedImageSpan extends WidgetSpan {
     : super(
         child: Builder(
           builder: (context) {
-            return Container(child: PixivImage(imageUrl));
+            return GestureDetector(
+              onLongPress: () async {
+                final action = await showDialog<String>(
+                  context: context,
+                  builder: (context) {
+                    return SimpleDialog(
+                      children: <Widget>[
+                        SimpleDialogOption(
+                          onPressed: () {
+                            Navigator.of(context).pop('save');
+                          },
+                          child: Text(I18n.of(context).save),
+                        ),
+                        SimpleDialogOption(
+                          onPressed: () {
+                            Navigator.of(context).pop();
+                          },
+                          child: Text(I18n.of(context).cancel),
+                        ),
+                      ],
+                    );
+                  },
+                );
+                if (action == 'save' && context.mounted) {
+                  await _saveUploadedImage(context, imageUrl);
+                }
+              },
+              child: Container(child: PixivImage(imageUrl)),
+            );
           },
         ),
       );
+
+  static Future<void> _saveUploadedImage(
+    BuildContext context,
+    String url,
+  ) async {
+    try {
+      final fileInfo = await pixivCacheManager?.getFileFromCache(url);
+      final bytes = fileInfo?.file.readAsBytesSync();
+      final Uint8List data;
+      if (bytes != null) {
+        data = bytes;
+      } else {
+        final dio = Dio();
+        final response = await dio.get<List<int>>(
+          url,
+          options: Options(
+            responseType: ResponseType.bytes,
+            headers: {...Hoster.header(url: url)},
+          ),
+        );
+        final list = response.data;
+        if (list == null || list.isEmpty) {
+          ScaffoldMessenger.of(
+            context,
+          ).showSnackBar(SnackBar(content: Text(I18n.of(context).failed)));
+          return;
+        }
+        data = Uint8List.fromList(list);
+      }
+
+      final uri = Uri.tryParse(url);
+      String fileName = (uri != null && uri.pathSegments.isNotEmpty)
+          ? uri.pathSegments.last
+          : '';
+      if (fileName.isEmpty) {
+        fileName = 'uploaded_${DateTime.now().millisecondsSinceEpoch}.jpg';
+      } else if (!fileName.contains('.')) {
+        fileName = '$fileName.jpg';
+      }
+
+      await saveStore.saveToGalleryWithUser(data, 'novel', 0, 0, fileName);
+      if (context.mounted) {
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(SnackBar(content: Text(I18n.of(context).saved)));
+      }
+    } catch (e) {
+      if (context.mounted) {
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(SnackBar(content: Text(I18n.of(context).failed)));
+      }
+    }
+  }
 }
 
 //[pixivimage:12551-1]