Add download zip page

lib/api/client.dart

@@ -162,6 +162,14 @@ abstract class _EHApi {
   @GET('/tag/rows')
   Future<ApiResult<List<Tag>>> getRowTags(
       {@CancelRequest() CancelToken? cancel});
+
+  @GET('/export/gallery/zip/{gid}')
+  @DioResponseType(ResponseType.stream)
+  Future<HttpResponse> exportGalleryZip(@Path("gid") int gid,
+      {@Query("jpn_title") bool? jpnTitle,
+      @Query("max_length") int? maxLength,
+      @Query("export_ad") bool? exportAd,
+      @CancelRequest() CancelToken? cancel});
 }
 
 class EHApi extends __EHApi {

lib/api/client.g.dart

@@ -647,6 +647,47 @@ class __EHApi implements _EHApi {
     return value;
   }
 
+  @override
+  Future<HttpResponse<dynamic>> exportGalleryZip(
+    int gid, {
+    bool? jpnTitle,
+    int? maxLength,
+    bool? exportAd,
+    CancelToken? cancel,
+  }) async {
+    const _extra = <String, dynamic>{};
+    final queryParameters = <String, dynamic>{
+      r'jpn_title': jpnTitle,
+      r'max_length': maxLength,
+      r'export_ad': exportAd,
+    };
+    queryParameters.removeWhere((k, v) => v == null);
+    final _headers = <String, dynamic>{};
+    final Map<String, dynamic>? _data = null;
+    final _result =
+        await _dio.fetch(_setStreamType<HttpResponse<dynamic>>(Options(
+      method: 'GET',
+      headers: _headers,
+      extra: _extra,
+      responseType: ResponseType.stream,
+    )
+            .compose(
+              _dio.options,
+              '/export/gallery/zip/${gid}',
+              queryParameters: queryParameters,
+              data: _data,
+              cancelToken: cancel,
+            )
+            .copyWith(
+                baseUrl: _combineBaseUrls(
+              _dio.options.baseUrl,
+              baseUrl,
+            ))));
+    final value = _result.data;
+    final httpResponse = HttpResponse(value, _result);
+    return httpResponse;
+  }
+
   RequestOptions _setStreamType<T>(RequestOptions requestOptions) {
     if (T != dynamic &&
         !(requestOptions.responseType == ResponseType.bytes ||

lib/components/gallery_basic_info.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:go_router/go_router.dart';
 import '../api/gallery.dart';
 import 'thumbnail.dart';
 
@@ -40,7 +41,9 @@ class GalleryBasicInfo extends StatelessWidget {
                         onPressed: null,
                         child: Text(AppLocalizations.of(context)!.read)),
                     ElevatedButton(
-                        onPressed: null,
+                        onPressed: () {
+                          context.push('/dialog/download/zip/${gMeta.gid}');
+                        },
                         child: Text(AppLocalizations.of(context)!.download)),
                   ]))
         ]));

lib/components/gallery_info_desktop.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:go_router/go_router.dart';
 import 'package:intl/intl.dart';
 import '../api/gallery.dart';
 import '../main.dart';
@@ -115,7 +116,17 @@ class GalleryInfoDesktop extends StatelessWidget {
                         const VerticalDivider(indent: 10, endIndent: 10),
                         Expanded(child: TagsPanel(gData.tags)),
                         const VerticalDivider(indent: 10, endIndent: 10),
-                        SizedBox(width: 150, child: Column(children: [])),
+                        SizedBox(
+                            width: 150,
+                            child: Column(children: [
+                              ElevatedButton(
+                                  onPressed: () {
+                                    context.push(
+                                        '/dialog/download/zip/${gData.meta.gid}');
+                                  },
+                                  child: Text(
+                                      AppLocalizations.of(context)!.download)),
+                            ])),
                       ])),
                     ],
                   ))

lib/dialog/dialog_page.dart

@@ -0,0 +1,40 @@
+import 'package:flutter/material.dart';
+
+class DialogPage<T> extends Page<T> {
+  final Offset? anchorPoint;
+  final Color? barrierColor;
+  final bool barrierDismissible;
+  final String? barrierLabel;
+  final bool useSafeArea;
+  final CapturedThemes? themes;
+  final WidgetBuilder builder;
+
+  const DialogPage({
+    required this.builder,
+    this.anchorPoint,
+    this.barrierColor = Colors.black87,
+    this.barrierDismissible = true,
+    this.barrierLabel,
+    this.useSafeArea = true,
+    this.themes,
+    super.key,
+    super.name,
+    super.arguments,
+    super.restorationId,
+  });
+
+  @override
+  Route<T> createRoute(BuildContext context) => DialogRoute<T>(
+        context: context,
+        settings: this,
+        builder: (context) => Dialog(
+          child: builder(context),
+        ),
+        anchorPoint: anchorPoint,
+        barrierColor: barrierColor,
+        barrierDismissible: barrierDismissible,
+        barrierLabel: barrierLabel,
+        useSafeArea: useSafeArea,
+        themes: themes,
+      );
+}

lib/dialog/download_zip_page.dart

@@ -0,0 +1,117 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:go_router/go_router.dart';
+import 'package:logging/logging.dart';
+import '../globals.dart';
+import '../utils/download_zip.dart';
+
+final _log = Logger("DownloadZipPage");
+
+class DownloadZipPage extends StatefulWidget {
+  const DownloadZipPage(this.gid, {Key? key}) : super(key: key);
+  final int gid;
+
+  @override
+  State<DownloadZipPage> createState() => _DownloadZipPage();
+}
+
+class _DownloadZipPage extends State<DownloadZipPage> {
+  bool useTitleJpn = false;
+  bool exportAd = false;
+  String maxLength = "";
+  final _formKey = GlobalKey<FormState>();
+  @override
+  void initState() {
+    useTitleJpn = prefs.getBool("useTitleJpn") ?? false;
+    exportAd = prefs.getBool("exportAd") ?? false;
+    maxLength = prefs.getInt("maxZipFilenameLength")?.toString() ?? "";
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final i18n = AppLocalizations.of(context)!;
+    final maxWidth = MediaQuery.of(context).size.width;
+    return Container(
+        padding: maxWidth < 400
+            ? const EdgeInsets.symmetric(vertical: 20, horizontal: 5)
+            : const EdgeInsets.all(20),
+        width: maxWidth < 810 ? null : 800,
+        decoration: BoxDecoration(borderRadius: BorderRadius.circular(10)),
+        child: SingleChildScrollView(
+            child: Form(
+                key: _formKey,
+                child: Column(
+                  children: [
+                    Row(
+                      children: [
+                        Expanded(
+                            child: Center(
+                                child: Text(
+                          i18n.downloadAsZip,
+                          style: Theme.of(context).textTheme.headlineSmall,
+                        ))),
+                        IconButton(
+                          onPressed: () => context.canPop()
+                              ? context.pop()
+                              : context.go("/gallery/${widget.gid}"),
+                          icon: const Icon(Icons.close),
+                        )
+                      ],
+                    ),
+                    CheckboxMenuButton(
+                        value: useTitleJpn,
+                        onChanged: (u) {
+                          if (u != null) {
+                            setState(() {
+                              useTitleJpn = u!;
+                            });
+                          }
+                        },
+                        child: Text(i18n.useTitleJpn)),
+                    CheckboxMenuButton(
+                        value: exportAd,
+                        onChanged: (u) {
+                          if (u != null) {
+                            setState(() {
+                              exportAd = u!;
+                            });
+                          }
+                        },
+                        child: Text(i18n.exportAd)),
+                    Container(
+                        padding: const EdgeInsets.symmetric(vertical: 8.0),
+                        child: TextFormField(
+                          initialValue: maxLength,
+                          keyboardType: TextInputType.number,
+                          inputFormatters: [
+                            FilteringTextInputFormatter.digitsOnly
+                          ],
+                          onChanged: (v) {
+                            setState(() {
+                              maxLength = v;
+                            });
+                          },
+                          decoration: InputDecoration(
+                              border: const OutlineInputBorder(),
+                              labelText: i18n.maxZipFilenameLength),
+                        )),
+                    ElevatedButton(
+                        onPressed: () {
+                          downloadZip(widget.gid,
+                                  jpnTitle: useTitleJpn,
+                                  exportAd: exportAd,
+                                  maxLength: int.tryParse(maxLength))
+                              .catchError((err) {
+                            _log.warning("Failed to download zip:", err);
+                          });
+                          context.canPop()
+                              ? context.pop()
+                              : context.go("/gallery/${widget.gid}");
+                        },
+                        child: Text(i18n.download))
+                  ],
+                ))));
+  }
+}

lib/l10n/app_en.arb

@@ -79,5 +79,8 @@
                 "type": "String"
             }
         }
-    }
+    },
+    "downloadAsZip": "Download as ZIP file",
+    "exportAd": "Export pages which marked as ads",
+    "maxZipFilenameLength": "Maximum length of filenames in Zip files"
 }

lib/l10n/app_zh.arb

@@ -79,5 +79,8 @@
                 "type": "String"
             }
         }
-    }
+    },
+    "downloadAsZip": "下载为ZIP文件",
+    "exportAd": "导出标记为广告的页面",
+    "maxZipFilenameLength": "Zip文件中文件名的最大长度"
 }

lib/main.dart

@@ -8,6 +8,8 @@ import 'package:logging/logging.dart';
 import 'package:window_manager/window_manager.dart';
 import 'api/client.dart';
 import 'create_root_user.dart';
+import 'dialog/dialog_page.dart';
+import 'dialog/download_zip_page.dart';
 import 'galleries.dart';
 import 'gallery.dart';
 import 'globals.dart';
@@ -87,7 +89,23 @@ final _router = GoRouter(
     GoRoute(
       path: "/gallery",
       redirect: (context, state) => "/galleries",
-    )
+    ),
+    GoRoute(
+        path: '/dialog/download/zip/:gid',
+        pageBuilder: (context, state) => DialogPage(
+            key: state.pageKey,
+            builder: (context) {
+              return DownloadZipPage(int.parse(state.pathParameters["gid"]!));
+            }),
+        redirect: (context, state) {
+          try {
+            int.parse(state.pathParameters["gid"]!);
+            return null;
+          } catch (e) {
+            _routerLog.warning("Failed to parse gid:", e);
+            return "/";
+          }
+        }),
   ],
 );
 

lib/platform/path.dart

@@ -39,4 +39,27 @@ class Path {
     return _safChannel.invokeMethod(
         "saveFile", [filenameWithoutExtension, dir, mimeType, bytes]);
   }
+
+  Future<SAFFile> openFile(String filenameWithoutExtension, String mimeType,
+      {String dir = ""}) async {
+    final fd = await _safChannel.invokeMethod<int>(
+        "openFile", [filenameWithoutExtension, dir, mimeType]);
+    return SAFFile(fd!);
+  }
+}
+
+class SAFFile {
+  SAFFile(this._fd);
+  final int _fd;
+  bool _disposed = false;
+  Future<int> write(Uint8List data) async {
+    if (_disposed) throw Exception("File already closed");
+    return await Path._safChannel.invokeMethod("writeFile", [_fd, data]);
+  }
+
+  Future<void> dispose() async {
+    if (_disposed) return;
+    _disposed = true;
+    await Path._safChannel.invokeMethod("closeFile", [_fd]);
+  }
 }

lib/utils/download_zip.dart

@@ -0,0 +1,36 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import '../globals.dart';
+import '../platform/save_file.dart';
+
+Future<void> downloadZip(int gid,
+    {bool? jpnTitle, int? maxLength, bool? exportAd}) async {
+  final cancel = CancelToken();
+  final re = await api.exportGalleryZip(gid,
+      jpnTitle: jpnTitle,
+      maxLength: maxLength,
+      exportAd: exportAd,
+      cancel: cancel);
+  final data = re.data as ResponseBody;
+  if (data.statusCode != 200) {
+    throw Exception("${data.statusCode} ${data.statusMessage}.");
+  }
+  final fileName = re.response.headers.value("content-disposition");
+  final filenameWithoutExtension = fileName?.substring(
+          fileName.indexOf("filename=\"") + 10, fileName.lastIndexOf(".")) ??
+      "$gid";
+  try {
+    final f = await platformPath.openFile(
+        Uri.decodeComponent(filenameWithoutExtension), "application/zip");
+    try {
+      await data.stream.forEach((data) {
+        f.write(data);
+      });
+    } finally {
+      await f.dispose();
+    }
+  } catch (e) {
+    cancel.cancel();
+    rethrow;
+  }
+}

windows/runner/CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.14)
-project(runner LANGUAGES CXX)
+project(runner)
 
 set(ENABLE_ICONV OFF CACHE BOOL "Libiconv is not needed.")
 add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/../../utils" "${CMAKE_BINARY_DIR}/utils")

windows/runner/flutter_window.cpp

@@ -10,6 +10,10 @@
 
 #include "flutter/generated_plugin_registrant.h"
 
+#include <fcntl.h>
+#include <io.h>
+#include "err.h"
+#include "fileop.h"
 #include "wchar_util.h"
 
 #define MAX_PATH_SIZE 32768
@@ -19,6 +23,22 @@ FlutterWindow::FlutterWindow(const flutter::DartProject& project)
 
 FlutterWindow::~FlutterWindow() {}
 
+void updateDataFromMimeType(std::wstring& defExt, std::wstring& filter, std::string mimeType) {
+  if (mimeType == "image/jpeg") {
+    filter.append(std::wstring(L"JPEG File(*.jpg)\0*.jpg\0", 23));
+    defExt = L"jpg";
+  } else if (mimeType == "image/png") {
+    filter.append(std::wstring(L"PNG File(*.png)\0*.png\0", 22));
+    defExt = L"png";
+  } else if (mimeType == "image/gif") {
+    filter.append(std::wstring(L"GIF File(*.gif)\0*.gif\0", 22));
+    defExt = L"gif";
+  } else if (mimeType == "application/zip") {
+    filter.append(std::wstring(L"ZIP File(*.zip)\0*.zip\0", 22));
+    defExt = L"zip";
+  }
+}
+
 bool FlutterWindow::OnCreate() {
   if (!Win32Window::OnCreate()) {
     return false;
@@ -87,16 +107,7 @@ bool FlutterWindow::OnCreate() {
             ofn.hwndOwner = Win32Window::GetHandle();
             std::wstring filter;
             std::wstring defExt;
-            if (*mimeType == "image/jpeg") {
-              filter.append(std::wstring(L"JPEG File(*.jpg)\0*.jpg\0", 23));
-              defExt = L"jpg";
-            } else if (*mimeType == "image/png") {
-              filter.append(std::wstring(L"PNG File(*.png)\0*.png\0", 22));
-              defExt = L"png";
-            } else if (*mimeType == "image/gif") {
-              filter.append(std::wstring(L"GIF File(*.gif)\0*.gif\0", 22));
-              defExt = L"gif";
-            };
+            updateDataFromMimeType(defExt, filter, *mimeType);
             filter.append(std::wstring(L"All Files\0*.*\0\0", 15));
             ofn.lpstrFilter = filter.c_str();
             ofn.lpstrDefExt = defExt.empty() ? nullptr : defExt.c_str();
@@ -119,6 +130,88 @@ bool FlutterWindow::OnCreate() {
             fwrite(data->data(), sizeof(uint8_t), data->size(), f);
             fclose(f);
             result->Success();
+          } else if (call.method_name() == "closeFile") {
+            auto args = std::get_if<flutter::EncodableList>(call.arguments());
+            auto fd = std::get_if<int>(&args->at(0));
+            if (!fd) {
+              result->Error("INVALID_ARGUMENT", "Invalid arguments.");
+              return;
+            }
+            fileop::close(*fd);
+            result->Success();
+          } else if (call.method_name() == "openFile") {
+            auto args = std::get_if<flutter::EncodableList>(call.arguments());
+            auto fileName = std::get_if<std::string>(&args->at(0));
+            auto dir = std::get_if<std::string>(&args->at(1));
+            auto mimeType = std::get_if<std::string>(&args->at(2));
+            if (!fileName || !dir || !mimeType) {
+              result->Error("INVALID_ARGUMENT", "Invalid arguments.");
+              return;
+            }
+            std::wstring wFileName;
+            if (!wchar_util::str_to_wstr(wFileName, *fileName, CP_UTF8)) {
+              result->Error("ERROR", "Failed to convert file name to wstring.");
+              return;
+            }
+            std::wstring wDir;
+            if (!dir->empty() && !wchar_util::str_to_wstr(wDir, *dir, CP_UTF8)) {
+              result->Error("ERROR", "Failed to convert dir to wstring.");
+              return;
+            }
+            OPENFILENAMEW ofn;
+            ZeroMemory(&ofn, sizeof(ofn));
+            ofn.lStructSize = sizeof(ofn);
+            ofn.hwndOwner = Win32Window::GetHandle();
+            std::wstring filter;
+            std::wstring defExt;
+            updateDataFromMimeType(defExt, filter, *mimeType);
+            filter.append(std::wstring(L"All Files\0*.*\0\0", 15));
+            ofn.lpstrFilter = filter.c_str();
+            ofn.lpstrDefExt = defExt.empty() ? nullptr : defExt.c_str();
+            wchar_t wFileNameBuf[MAX_PATH_SIZE];
+            memcpy(wFileNameBuf, wFileName.c_str(), (wFileName.size() + 1) * sizeof(wchar_t));
+            ofn.lpstrFile = wFileNameBuf;
+            ofn.nMaxFile = MAX_PATH_SIZE;
+            ofn.lpstrInitialDir = wDir.empty() ? nullptr : wDir.c_str();
+            ofn.Flags = OFN_DONTADDTORECENT | OFN_NONETWORKBUTTON | OFN_NOREADONLYRETURN | OFN_OVERWRITEPROMPT;
+            if (!GetSaveFileNameW(&ofn)) {
+              result->Error("ERROR", "Failed to get file name.");
+              return;
+            }
+            std::string fn;
+            if (!wchar_util::wstr_to_str(fn, wFileNameBuf, CP_UTF8)) {
+              result->Error("ERROR", "Failed to convert file name to UTF-8.");
+              return;
+            }
+            int fd = 0;
+            int e = fileop::open(fn, fd, _O_WRONLY | _O_BINARY | O_CREAT);
+            if (e) {
+              std::string errmsg;
+              if (!err::get_errno_message(errmsg, e)) {
+                errmsg = "Unknown error.";
+              }
+              result->Error("ERROR", "Failed to open file: " + errmsg);
+              return;
+            }
+            result->Success(fd);
+          } else if (call.method_name() == "writeFile") {
+            auto args = std::get_if<flutter::EncodableList>(call.arguments());
+            auto fd = std::get_if<int>(&args->at(0));
+            auto data = std::get_if<std::vector<uint8_t>>(&args->at(1));
+            if (!fd || !data) {
+              result->Error("INVALID_ARGUMENT", "Invalid arguments.");
+              return;
+            }
+            int num = _write(*fd, data->data(), (unsigned int)data->size());
+            if (num == -1) {
+              std::string errmsg;
+              if (!err::get_errno_message(errmsg, errno)) {
+                errmsg = "Unknown error.";
+              }
+              result->Error("ERROR", "Failed to write file:" + errmsg);
+              return;
+            }
+            result->Success(num);
           } else {
             result->NotImplemented();
           }