Crossed out cancelled hours, implemented file uploading

lib/screen/pages/files/fileUpload.dart

@@ -0,0 +1,72 @@
+import 'dart:developer';
+import 'dart:io';
+
+import 'package:async/async.dart';
+import 'package:flutter/material.dart';
+import 'package:marianum_mobile/api/marianumcloud/webdav/webdavApi.dart';
+
+class FileUpload extends StatefulWidget {
+  final String localPath;
+  final String remotePath;
+  const FileUpload({Key? key, required this.localPath, required this.remotePath}) : super(key: key);
+
+  @override
+  State<FileUpload> createState() => _FileUploadState();
+}
+
+class _FileUploadState extends State<FileUpload> {
+  CancelableOperation? cancelableOperation;
+  late File localFile;
+
+  @override
+  void initState() {
+    super.initState();
+    localFile = File(widget.localPath);
+  }
+
+  bool isRunning() {
+    return cancelableOperation != null && !(cancelableOperation!.isCompleted);
+  }
+
+  bool isComplete() {
+    return cancelableOperation?.isCompleted ?? false;
+  }
+
+  void start() async {
+    cancelableOperation = CancelableOperation.fromFuture(
+      (await WebdavApi.webdav).upload(localFile.readAsBytesSync(), widget.remotePath).then((value) {
+        log("Upload done!");
+      }),
+      onCancel: () => log("Upload cancelled"),
+    );
+
+    cancelableOperation!.then((e) {
+      setState(() {});
+    });
+    setState(() {});
+  }
+
+  void stop() {
+    cancelableOperation?.cancel();
+    setState(() {});
+    Navigator.of(context).pop();
+  }
+
+
+  @override
+  Widget build(BuildContext context) {
+    List<Widget> actions = List<Widget>.empty(growable: true);
+    if(!isRunning() && !isComplete()) actions.add(TextButton(onPressed: start, child: const Text("Upload starten")));
+    if(isRunning()) actions.add(TextButton(onPressed: stop, child: const Text("Upload Abbrechen")));
+    if(isComplete()) actions.add(TextButton(onPressed: Navigator.of(context).pop, child: const Text("Fertig")));
+
+    return AlertDialog(
+      title: const Text("Hochladen"),
+      content: Center(
+        child: isRunning() ? const CircularProgressIndicator() : const Text("Datei hochladen"),
+      ),
+      actions: actions,
+      icon: const Icon(Icons.upload),
+    );
+  }
+}

lib/screen/pages/files/files.dart

@@ -5,9 +5,9 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:loader_overlay/loader_overlay.dart';
 import 'package:marianum_mobile/api/marianumcloud/webdav/queries/listFiles/cacheableFile.dart';
+import 'package:marianum_mobile/screen/pages/files/fileUpload.dart';
 import 'package:marianum_mobile/widget/errorView.dart';
-import 'package:nextcloud/nextcloud.dart';
-import 'package:shared_preferences/shared_preferences.dart';
+import 'package:persistent_bottom_nav_bar/persistent_tab_view.dart';
 
 import '../../../api/marianumcloud/webdav/queries/listFiles/listFilesCache.dart';
 import '../../../api/marianumcloud/webdav/queries/listFiles/listFilesResponse.dart';
@@ -77,7 +77,10 @@ class _FilesState extends State<Files> {
   @override
   void initState() {
     super.initState();
+    _query();
+  }
 
+  void _query() {
     ListFilesCache(
         path: widget.path.isEmpty ? "/" : widget.path.join("/"),
         onUpdate: (ListFilesResponse d) => {
@@ -192,13 +195,19 @@ class _FilesState extends State<Files> {
         child: const Icon(Icons.upload),
       ),
       body: data == null ? const Center(child: CircularProgressIndicator()) : data!.files.isEmpty ? const ErrorView(icon: Icons.folder_off_rounded, text: "Der Ordner ist leer") : LoaderOverlay(
-        child: ListView.builder(
-          itemCount: files.length,
-          itemBuilder: (context, index) {
-            CacheableFile file = files.toList().skip(index).first;
-            return FileElement(file, widget.path);
+        child: RefreshIndicator(
+          onRefresh: () {
+            _query();
+            return Future.delayed(const Duration(seconds: 3));
           },
-        ),
+          child: ListView.builder(
+            itemCount: files.length,
+            itemBuilder: (context, index) {
+              CacheableFile file = files.toList().skip(index).first;
+              return FileElement(file, widget.path);
+            },
+          ),
+        )
       )
     );
   }
@@ -209,26 +218,10 @@ class _FilesState extends State<Files> {
       return;
     }
 
-    SharedPreferences preferences = await SharedPreferences.getInstance();
-    WebDavClient client = NextcloudClient("https://cloud.marianum-fulda.de/", username: preferences.getString("username"), password: preferences.getString("password"), loginName: preferences.getString("username")).webdav;
-
-    log("UPLOAD STARTING: $path");
+    context.loaderOverlay.show();
     File file = File(path);
+    var remotePath = "${widget.path.join("/")}/${file.path.split(Platform.pathSeparator).last}";
+    PersistentNavBarNavigator.pushNewScreen(context, screen: FileUpload(localPath: path, remotePath: remotePath), withNavBar: false);
 
-    showDialog(
-      context: context,
-      builder: (context) {
-        return SimpleDialog(
-          children: [
-            Image.memory(file.readAsBytesSync()),
-          ],
-        );
-      },
-    );
-
-    client.upload(file.readAsBytesSync(), "/${file.path.split(Platform.pathSeparator).last}").then((value) {
-      log("UPLOADED ${value.statusCode}");
-      context.loaderOverlay.hide();
-    });
   }
 }