TF-32 Add domain layer of export attachment for ios platform

core/lib/core.dart

@@ -33,6 +33,7 @@ export 'presentation/views/text/text_form_field_builder.dart';
 export 'presentation/views/image/icon_builder.dart';
 export 'presentation/views/context_menu/context_menu_action_builder.dart';
 export 'presentation/views/context_menu/context_menu_builder.dart';
+export 'presentation/views/dialog/downloading_file_dialog_builder.dart';
 
 // Resources
 export 'presentation/resources/assets_paths.dart';
@@ -48,6 +49,8 @@ export 'data/network/config/dynamic_url_interceptors.dart';
 export 'data/network/config/endpoint.dart';
 export 'data/network/config/service_path.dart';
 export 'data/network/dio_client.dart';
+export 'data/network/download/download_client.dart';
+export 'data/network/download/download_manager.dart';
 
 // State
 export 'presentation/state/success.dart';

core/lib/data/network/download/download_client.dart

@@ -0,0 +1,29 @@
+
+import 'dart:io';
+
+import 'package:core/core.dart';
+import 'package:dio/dio.dart';
+
+class DownloadClient {
+
+  final DioClient _dioClient;
+
+  DownloadClient(this._dioClient);
+
+  Future<ResponseBody> downloadFile(
+      String url,
+      String baseAuth,
+      CancelToken? cancelToken,
+  ) async {
+    final headerParam = _dioClient.getHeaders();
+    headerParam[HttpHeaders.authorizationHeader] = baseAuth;
+    headerParam[HttpHeaders.acceptHeader] = DioClient.jmapHeader;
+
+    final responseBody = await _dioClient.get(
+      url,
+      options: Options(headers: headerParam, responseType: ResponseType.stream),
+      cancelToken: cancelToken);
+
+    return (responseBody as ResponseBody);
+  }
+}

core/lib/data/network/download/download_manager.dart

@@ -0,0 +1,76 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:core/core.dart';
+import 'package:core/data/network/download/download_client.dart';
+import 'package:dio/dio.dart';
+
+class DownloadManager {
+  final DownloadClient _downloadClient;
+
+  DownloadManager(this._downloadClient);
+
+  Future<String> downloadFile(
+      String downloadUrl,
+      Future<Directory> directoryToSave,
+      String filename,
+      String baseAuth,
+      {CancelToken? cancelToken}
+  ) async {
+    final streamController = StreamController<String>();
+
+    try {
+      await Future.wait([
+        _downloadClient.downloadFile(downloadUrl, baseAuth, cancelToken),
+        directoryToSave
+      ]).then((values) {
+        final fileStream = (values[0] as ResponseBody).stream;
+        final tempFilePath = '${(values[1] as Directory).absolute.path}/$filename';
+
+        final file = File(tempFilePath);
+        file.createSync(recursive: true);
+        var randomAccessFile = file.openSync(mode: FileMode.write);
+        late StreamSubscription subscription;
+
+        subscription = fileStream
+            .takeWhile((_) => cancelToken == null || !cancelToken.isCancelled)
+            .listen((data) {
+              subscription.pause();
+              randomAccessFile.writeFrom(data).then((_randomAccessFile) {
+                randomAccessFile = _randomAccessFile;
+                subscription.resume();
+                if (cancelToken != null && cancelToken.isCancelled) {
+                  streamController.sink.addError(CancelDownloadFileException(cancelToken.cancelError?.message));
+                }
+              }).catchError((error) async {
+                await subscription.cancel();
+                streamController.sink.addError(CommonDownloadFileException(error.toString()));
+                await streamController.close();
+              });
+        }, onDone: () async {
+          await randomAccessFile.close();
+          if (cancelToken != null && cancelToken.isCancelled) {
+            streamController.sink.addError(CancelDownloadFileException(cancelToken.cancelError?.message));
+          } else {
+            streamController.sink.add(tempFilePath);
+          }
+          await streamController.close();
+        }, onError: (error) async {
+          await randomAccessFile.close();
+          await file.delete();
+          streamController.sink.addError(CommonDownloadFileException(error.toString()));
+          await streamController.close();
+        });
+      });
+    } catch(exception) {
+      if (cancelToken != null && cancelToken.isCancelled) {
+        streamController.sink.addError(CancelDownloadFileException(cancelToken.cancelError?.message));
+        await streamController.close();
+        return streamController.stream.first;
+      } else {
+        throw exception;
+      }
+    }
+    return streamController.stream.first;
+  }
+}

core/lib/presentation/extensions/color_extension.dart

@@ -55,4 +55,5 @@ extension AppColor on Color {
   static const toastBackgroundColor = Color(0xFFACAFFF);
   static const toastSuccessBackgroundColor = Color(0xFF04AA11);
   static const toastErrorBackgroundColor = Color(0xFFFF5858);
+  static const backgroundCountAttachment = Color(0x681C1C1C);
 }

core/lib/presentation/resources/image_paths.dart

@@ -37,6 +37,8 @@ class ImagePaths {
   String get icComposerFileShare => _getImagePath('ic_composer_file_share.svg');
   String get icExpandAddress => _getImagePath('ic_expand_address.svg');
   String get icSelected => _getImagePath('ic_selected.svg');
+  String get icExpandAttachment => _getImagePath('ic_expand_attachment.svg');
+  String get icDownload => _getImagePath('ic_download.svg');
 
   String _getImagePath(String imageName) {
     return AssetsPaths.images + imageName;

core/lib/presentation/views/dialog/downloading_file_dialog_builder.dart

@@ -0,0 +1,71 @@
+
+import 'package:core/core.dart';
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+
+typedef OnCancelDownloadActionClick = void Function();
+
+class DownloadingFileDialogBuilder {
+  Key? _key;
+  String _title = '';
+  String _content = '';
+  String _actionText = '';
+  OnCancelDownloadActionClick? _onCancelDownloadActionClick;
+
+  DownloadingFileDialogBuilder();
+
+  void key(Key key) {
+    _key = key;
+  }
+
+  void title(String title) {
+    _title = title;
+  }
+
+  void content(String content) {
+    _content = content;
+  }
+
+  void actionText(String actionText) {
+    _actionText = actionText;
+  }
+
+  void addCancelDownloadActionClick(OnCancelDownloadActionClick onCancelDownloadActionClick) {
+    _onCancelDownloadActionClick = onCancelDownloadActionClick;
+  }
+
+  Widget build() {
+    return CupertinoAlertDialog(
+      key: _key ?? Key('DownloadingFileBuilder'),
+      title: Text(_title, style: TextStyle(fontSize: 17.0, color: Colors.black)),
+      content: Padding(
+        padding: EdgeInsets.only(top: 16.0, left: 16.0, right: 16.0),
+        child: Center(
+          child: Column(
+            children: [
+              SizedBox(
+                width: 20.0,
+                height: 20.0,
+                child: CupertinoActivityIndicator()),
+              SizedBox(height: 16),
+              Text(
+                _content,
+                style: TextStyle(fontSize: 13.0, color: Colors.black),
+                softWrap: false,
+                maxLines: 1)
+            ],
+          ),
+        )),
+      actions: [
+        TextButton(
+          onPressed: () {
+            if (_onCancelDownloadActionClick != null) {
+              _onCancelDownloadActionClick!();
+            }},
+          child: Text(_actionText, style: TextStyle(fontSize: 17.0, color: AppColor.appColor)),
+        )
+      ],
+    );
+  }
+}