Start to build synchronization logic

moneymgr_mobile/lib/routes/scans_list/scans_list_screen.dart

@@ -4,6 +4,9 @@ import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:moneymgr_mobile/services/router/routes_list.dart';
 import 'package:moneymgr_mobile/services/storage/expenses.dart';
 import 'package:moneymgr_mobile/utils/time_utils.dart';
+import 'package:moneymgr_mobile/widgets/full_screen_error.dart';
+import 'package:moneymgr_mobile/widgets/loading_scaffold.dart';
+import 'package:moneymgr_mobile/widgets/synchronize_button.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 part 'scans_list_screen.g.dart';
@@ -20,14 +23,21 @@ class ScansListScreen extends HookConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final expensesList = ref.watch(_expensesListProvider);
-    return Scaffold(
+
-      appBar: AppBar(title: Text("Expenses")),
+    return switch (expensesList) {
-      body: switch (expensesList) {
+      AsyncData(:final value) => Scaffold(
-        AsyncData(:final value) => _ExpensesList(list: value),
+        appBar: AppBar(
-        AsyncError(:final error) => Center(child: Text('Load error: $error')),
+          title: Text("Expenses"),
-        _ => const Center(child: CircularProgressIndicator()),
+          actions: [value.isEmpty ? Container() : SynchronizeButton()],
-      },
+        ),
-    );
+        body: _ExpensesList(list: value),
+      ),
+      AsyncError(:final error) => FullScreenError(
+        message: "Failed to load the list of expenses",
+        error: error.toString(),
+      ),
+      _ => const LoadingScaffold(title: "Expenses"),
+    };
   }
 }
 

moneymgr_mobile/lib/services/api/api_client.dart

@@ -24,7 +24,11 @@ class ApiClient {
     : client = Dio(BaseOptions(baseUrl: token.apiUrl));
 
   /// Get Dio instance
-  Future<Response<T>> execute<T>(String uri, {String method = "GET"}) async {
+  Future<Response<T>> execute<T>(
+    String uri, {
+    String method = "GET",
+    Object? data,
+  }) async {
     Logger.root.fine("Request on ${token.apiUrl} - URI $uri");
     return client.request(
       uri,
@@ -32,6 +36,7 @@ class ApiClient {
         method: method,
         headers: {apiTokenHeader: _genJWT(method, uri)},
       ),
+      data: data,
     );
   }
 

moneymgr_mobile/lib/services/api/files_api.dart

@@ -0,0 +1,43 @@
+import 'dart:typed_data';
+
+import 'package:dio/dio.dart';
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:http_parser/http_parser.dart';
+import 'package:logging/logging.dart';
+import 'package:moneymgr_mobile/services/api/api_client.dart';
+
+part 'files_api.freezed.dart';
+part 'files_api.g.dart';
+
+@freezed
+abstract class UploadResult with _$UploadResult {
+  const factory UploadResult({required int id}) = _UploadResult;
+
+  factory UploadResult.fromJson(Map<String, dynamic> json) =>
+      _$UploadResultFromJson(json);
+}
+
+extension FilesApi on ApiClient {
+  /// Upload a file
+  Future<UploadResult> uploadFile({
+    required String filename,
+    required String mimeType,
+    required Uint8List bytes,
+  }) async {
+    final res = await execute(
+      "/file",
+      method: "POST",
+      data: FormData.fromMap({
+        "file": MultipartFile.fromBytes(
+          bytes,
+          filename: filename,
+          contentType: MediaType.parse(mimeType),
+        ),
+      }),
+    );
+
+    Logger.root.fine("Successfully uploaded file with response=${res.data}");
+
+    return UploadResult.fromJson(res.data);
+  }
+}

moneymgr_mobile/lib/widgets/synchronize_button.dart

@@ -0,0 +1,74 @@
+import 'package:flutter/material.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:logging/logging.dart';
+import 'package:moneymgr_mobile/services/api/api_client.dart';
+import 'package:moneymgr_mobile/services/api/files_api.dart';
+import 'package:moneymgr_mobile/services/storage/expenses.dart';
+import 'package:moneymgr_mobile/utils/extensions.dart';
+import 'package:moneymgr_mobile/utils/hooks.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'synchronize_button.g.dart';
+
+/// Synchronize expenses list with backend
+@riverpod
+Future<void> _performSynchronization(Ref ref) async {
+  final expenses = ref.watch(expensesProvider).requireValue;
+  final apiService = ref.watch(apiServiceProvider)!;
+
+  final list = await expenses.getList();
+
+  for (final exp in list) {
+    // First, upload file
+    final bytes = await expenses.loadFile(exp);
+    final file = await apiService.uploadFile(
+      filename: exp.localFileName,
+      mimeType: exp.mimeType,
+      bytes: bytes,
+    );
+
+    // TODO continue
+    break;
+  }
+}
+
+class SynchronizeButton extends HookConsumerWidget {
+  const SynchronizeButton({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final (:pending, :snapshot, :hasError) = useAsyncTask();
+
+    handleSynchronize() async {
+      try {
+        await ref.watch(
+          _performSynchronizationProvider.selectAsync((it) => it),
+        );
+      } catch (e, s) {
+        Logger.root.warning("Failed to synchronize expenses! $e $s");
+        if (context.mounted) {
+          context.showTextSnackBar("Failed to synchronize expenses! $e");
+        }
+      }
+    }
+
+    return snapshot.connectionState == ConnectionState.waiting
+        ? Padding(
+            padding: const EdgeInsets.all(12.0),
+            child: SizedBox(
+              height: 20,
+              width: 20,
+              child: CircularProgressIndicator(strokeWidth: 2),
+            ),
+          )
+        : IconButton(
+            onPressed: () => pending.value = handleSynchronize(),
+            style: ButtonStyle(
+              backgroundColor: hasError
+                  ? WidgetStatePropertyAll(Colors.red)
+                  : null,
+            ),
+            icon: Icon(Icons.sync_rounded),
+          );
+  }
+}

moneymgr_mobile/pubspec.lock

@@ -529,7 +529,7 @@ packages:
     source: hosted
     version: "3.2.2"
   http_parser:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: http_parser
       sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"

moneymgr_mobile/pubspec.yaml

@@ -72,6 +72,7 @@ dependencies:
 
   # API requests
   dio: ^5.8.0+1
+  http_parser: ^4.1.2
 
   # Qr Code library
   mobile_scanner: ^7.0.1