Merge pull request 'Revert to main-branch for deployment of the backend' (#67) from fix/backend/revert-to-main-deployment-version into main

Reviewed-on: #67

frontend/.metadata

@@ -4,7 +4,7 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: "54e66469a933b60ddf175f858f82eaeb97e48c8d"
+  revision: "09de023485e95e6d1225c2baa44b8feb85e0d45f"
   channel: "stable"
 
 project_type: app
@@ -13,26 +13,11 @@ project_type: app
 migration:
   platforms:
     - platform: root
-      create_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-      base_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-    - platform: android
-      create_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-      base_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-    - platform: ios
-      create_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-      base_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
+      create_revision: 09de023485e95e6d1225c2baa44b8feb85e0d45f
+      base_revision: 09de023485e95e6d1225c2baa44b8feb85e0d45f
     - platform: linux
-      create_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-      base_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-    - platform: macos
-      create_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-      base_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-    - platform: web
-      create_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-      base_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-    - platform: windows
-      create_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
-      base_revision: 54e66469a933b60ddf175f858f82eaeb97e48c8d
+      create_revision: 09de023485e95e6d1225c2baa44b8feb85e0d45f
+      base_revision: 09de023485e95e6d1225c2baa44b8feb85e0d45f
 
   # User provided section
 

frontend/lib/modules/current_trip_error_message.dart

@@ -16,22 +16,27 @@ class CurrentTripErrorMessage extends StatefulWidget {
 class _CurrentTripErrorMessageState extends State<CurrentTripErrorMessage> {
   @override
   Widget build(BuildContext context) => Center(
-    child: Row(
+    child: Column(
       mainAxisAlignment: MainAxisAlignment.center,
+      crossAxisAlignment: CrossAxisAlignment.center,
       children: [
-        const Icon(
-          Icons.error_outline,
-          color: Colors.red,
-          size: 50,
-        ),
-        const Padding(
-          padding: EdgeInsets.only(left: 10),
+        Text(
+          "😢",
+          style: TextStyle(
+            fontSize: 40,
+          ),
         ),
+        const SizedBox(height: 10),
         AutoSizeText(
-          'Error: ${widget.trip.errorDescription}',
-          maxLines: 3,
+          // at this point the trip is guaranteed to have an error message
+          widget.trip.errorDescription!,
+          maxLines: 30,
+          style: Theme.of(context).textTheme.bodyMedium,
+          textAlign: TextAlign.center,
+
         ),
       ],
-    )
+    ),
   );
+
 }

frontend/lib/modules/current_trip_panel.dart

@@ -1,3 +1,5 @@
+import 'package:anyway/pages/current_trip.dart';
+import 'package:auto_size_text/auto_size_text.dart';
 import 'package:flutter/material.dart';
 
 import 'package:anyway/constants.dart';
@@ -34,15 +36,27 @@ class _CurrentTripPanelState extends State<CurrentTripPanel> {
       listenable: widget.trip,
       builder: (context, child) {
         if (widget.trip.uuid == 'error') {
-          return Align(
-              alignment: Alignment.topCenter,
-              child: SizedBox(
+          return ListView(
+            controller: widget.controller,
+            padding: const EdgeInsets.only(top: 10, left: 10, right: 10, bottom: 30),
+            children: [
+              SizedBox(
                 // reuse the exact same height as the panel has when collapsed
                 // this way the greeter will be centered when the panel is collapsed
-                height: MediaQuery.of(context).size.height * TRIP_PANEL_MIN_HEIGHT,
-                child: CurrentTripErrorMessage(trip: widget.trip)
+                // note that we need to account for the padding above
+                height: MediaQuery.of(context).size.height * TRIP_PANEL_MIN_HEIGHT - 10,
+                child: Center(child: 
+                  AutoSizeText(
+                    maxLines: 1,
+                    'Error',
+                    style: greeterStyle
+                  )
+                ),
               ),
-            );
+
+              CurrentTripErrorMessage(trip: widget.trip),
+            ],
+          );
         } else if (widget.trip.uuid == 'pending') {
             return Align(
               alignment: Alignment.topCenter,

frontend/lib/pages/new_trip_preferences.dart

@@ -34,23 +34,6 @@ class _NewTripPreferencesPageState extends State<NewTripPreferencesPage> with Sc
       child: Scaffold(
         body: ListView(
           children: [
-            // Center(
-            //   child: CircleAvatar(
-            //     radius: 100,
-            //     child: Icon(Icons.person, size: 100),
-            //   )
-            // ),
-            // Padding(padding: EdgeInsets.only(top: 30)),
-            // Center(
-            //   child: FutureBuilder(
-            //     future: widget.trip.cityName,
-            //     builder: (context, snapshot) => Text(
-            //       'Your trip to ${snapshot.hasData ? snapshot.data! : "..."}',
-            //       style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)
-            //     )
-            //   )
-            // ),
-
           Center(
             child: Padding(
             padding: EdgeInsets.only(left: 10, right: 10, top: 20, bottom: 0),
@@ -63,6 +46,11 @@ class _NewTripPreferencesPageState extends State<NewTripPreferencesPage> with Sc
           durationPicker(preferences.maxTime),
 
           preferenceSliders([preferences.sightseeing, preferences.shopping, preferences.nature]),
+
+          // Add a conditional padding to avoid the floating button covering the last slider
+          Padding(
+            padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom + 80),
+            ),
         ]
       ),
       floatingActionButton: NewTripButton(trip: widget.trip, preferences: preferences),

frontend/lib/pages/no_trips_page.dart

@@ -21,10 +21,13 @@ class _NoTripsPageState extends State<NoTripsPage> with ScaffoldLayout {
             Text(
               "No trips yet",
               style: Theme.of(context).textTheme.headlineMedium,
+              textAlign: TextAlign.center,
             ),
+            Padding(padding: EdgeInsets.only(bottom: 10)),
             Text(
               "You can start a new trip by clicking the button below",
               style: Theme.of(context).textTheme.bodyMedium,
+              textAlign: TextAlign.center,
             ),
           ],
         ),

frontend/lib/pages/settings.dart

@@ -177,7 +177,7 @@ class _SettingsPageState extends State<SettingsPage> with ScaffoldLayout {
     return Center(
       child: Column(
         children: [
-          Text('AnyWay does not collect or store any of the data that is submitted via the app. The location of your trip is not stored. The location feature is only used to show your current location on the map, it is not transmitted to our servers.', textAlign: TextAlign.center),
+          Text('AnyWay does not collect or store any of the data that is submitted via the app. The location of your trip is not stored. The location feature is only used to show your current location on the map.', textAlign: TextAlign.center),
           Padding(padding: EdgeInsets.only(top: 3)),
           Text('Our full privacy policy is available under:', textAlign: TextAlign.center),
           

frontend/lib/utils/fetch_trip.dart

@@ -1,5 +1,7 @@
+import "dart:async";
 import "dart:convert";
 import "dart:developer";
+import "dart:io";
 import "package:anyway/main.dart";
 import 'package:dio/dio.dart';
 
@@ -18,11 +20,6 @@ Dio dio = Dio(
     // also accept 500 errors, since we cannot rule out that the server is at fault. We still want to gracefully handle these errors
     validateStatus: (status) => status! <= 500,
     receiveDataWhenStatusError: true,
-    // api is notoriously slow
-    // headers: {
-    //   HttpHeaders.userAgentHeader: 'dio',
-    //   'api': '1.0.0',
-    // },
     contentType: Headers.jsonContentType,
     responseType: ResponseType.json,    
   ),
@@ -48,25 +45,70 @@ fetchTrip(
     );
   } catch (e) {
     trip.updateUUID("error");
-    trip.updateError(e.toString());
+      
+    // Format the error message to be more user friendly
+    String errorDescription;
+    if (e is DioException) {
+        errorDescription = e.message ?? "Unknown error";
+    } else if (e is SocketException) {
+        errorDescription = "No internet connection";
+    } else if (e is TimeoutException) {
+        errorDescription = "Request timed out";
+    } else {
+        errorDescription = "Unknown error";
+    }
+
+    String errorMessage = """
+      We're sorry, the following error was generated:
+
+      ${errorDescription.trim()}
+    """.trim();
+
+    trip.updateError(errorMessage);
     log(e.toString());
+    log(errorMessage);
     return;
   }
 
-  // handle errors
+  // handle more specific errors
   if (response.statusCode != 200) {
     trip.updateUUID("error");
-    String errorDetail;
+    String errorDescription;
     if (response.data.runtimeType == String) {
-      errorDetail = response.data;
+      errorDescription = response.data;
+    } else if (response.data.runtimeType == Map<String, dynamic>) {
+      errorDescription = response.data["detail"] ?? "Unknown error";
     } else {
-      errorDetail = response.data["detail"] ?? "Unknown error";
+      errorDescription = "Unknown error";
     }
-    trip.updateError(errorDetail);
-    log(errorDetail);
+
+    String errorMessage = """
+      We're sorry, our servers generated the following error:
+
+      ${errorDescription.trim()}
+      Please try again.
+    """.trim();
+    trip.updateError(errorMessage);
+    log(errorMessage);
     // Actualy no need to throw an exception, we can just log the error and let the user retry
     // throw Exception(errorDetail);
   } else {
+    
+    // if the response data is not json, throw an error
+    if (response.data is! Map<String, dynamic>) {
+      log("${response.data.runtimeType}");
+      trip.updateUUID("error");
+      String errorMessage = """
+        We're sorry, our servers generated the following error:
+
+        ${response.data.trim()}
+        Please try again.
+      """.trim();
+      trip.updateError(errorMessage);
+      log(errorMessage);
+      return;
+    }
+
     Map<String, dynamic> json = response.data;
 
     // only fill in the trip "meta" data for now

frontend/linux/.gitignore

@@ -0,0 +1 @@
+flutter/ephemeral

frontend/linux/CMakeLists.txt

@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "anyway")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.anydev.anyway")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()

frontend/linux/flutter/CMakeLists.txt

@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)

frontend/linux/runner/CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")

frontend/linux/runner/main.cc

@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}

frontend/linux/runner/my_application.cc

@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "anyway");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "anyway");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}

frontend/linux/runner/my_application.h

@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_

frontend/test/widget_test.dart

@@ -0,0 +1,30 @@
+// This is a basic Flutter widget test.
+//
+// To perform an interaction with a widget in your test, use the WidgetTester
+// utility in the flutter_test package. For example, you can send tap and scroll
+// gestures. You can also use WidgetTester to find child widgets in the widget
+// tree, read text, and verify that the values of widget properties are correct.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:anyway/main.dart';
+
+void main() {
+  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+    // Build our app and trigger a frame.
+    await tester.pumpWidget(const MyApp());
+
+    // Verify that our counter starts at 0.
+    expect(find.text('0'), findsOneWidget);
+    expect(find.text('1'), findsNothing);
+
+    // Tap the '+' icon and trigger a frame.
+    await tester.tap(find.byIcon(Icons.add));
+    await tester.pump();
+
+    // Verify that our counter has incremented.
+    expect(find.text('0'), findsNothing);
+    expect(find.text('1'), findsOneWidget);
+  });
+}