The very basic client app, not adapted for mobiles.

client/internal/services/core/mainwindow/mainwindow.go

@@ -0,0 +1,109 @@
+package mainwindow
+
+import (
+	"fmt"
+	"log/slog"
+	"os"
+
+	"bunker/client/internal/application"
+	"bunker/client/internal/services/core"
+	"bunker/client/internal/services/core/mainwindow/models"
+	"bunker/commons"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/lang"
+	"fyne.io/fyne/v2/widget"
+)
+
+var _ = core.MainWindow(&mainWindow{})
+
+type mainWindow struct {
+	app             *application.Application
+	window          fyne.Window
+	options         core.Options
+	tabs            *container.AppTabs
+	sysInfoHandlers map[string]*models.SysInfoHandler
+}
+
+// Initialize инициализирует сервис.
+func Initialize(app *application.Application) error {
+	mainW := &mainWindow{
+		app: app,
+	}
+
+	if err := app.RegisterService(mainW); err != nil {
+		return fmt.Errorf("%w: %w", core.ErrMainWindow, err)
+	}
+
+	return nil
+}
+
+func (m *mainWindow) Configure() error {
+	return nil
+}
+
+func (m *mainWindow) ConnectDependencies() error {
+	optionsRaw := m.app.Service(core.ServiceNameOptions)
+	if optionsRaw == nil {
+		return fmt.Errorf("connect dependencies: get options service: %w", application.ErrServiceNotFound)
+	}
+
+	options, valid := optionsRaw.(core.Options)
+	if !valid {
+		return fmt.Errorf("connect dependencies: type assert options service: %w", core.ErrOptionsIsInvalid)
+	}
+
+	m.options = options
+
+	return nil
+}
+
+func (m *mainWindow) Initialize() error {
+	m.sysInfoHandlers = make(map[string]*models.SysInfoHandler)
+
+	m.window = m.app.Fyne().NewWindow(lang.L("window.title"))
+	// ToDo: сохранение и восстановление размеров окна.
+	//nolint:mnd
+	m.window.Resize(fyne.NewSize(800, 650))
+
+	m.initializeMenu()
+
+	m.window.SetCloseIntercept(m.stopApp)
+
+	welcomeLabel := widget.NewLabel(lang.L("window.lorem_ipsum.text"))
+	welcomeLabel.Wrapping = fyne.TextWrapWord
+
+	m.tabs = container.NewAppTabs(
+		container.NewTabItem(lang.L("window.lorem_ipsum.tab_name"), welcomeLabel),
+	)
+	m.window.SetContent(m.tabs)
+
+	return nil
+}
+
+func (m *mainWindow) MainWindow() fyne.Window {
+	return m.window
+}
+
+func (m *mainWindow) Name() string {
+	return core.ServiceNameMainWindow
+}
+
+func (m *mainWindow) LaunchStartupTasks() error {
+	m.window.Show()
+
+	return nil
+}
+
+func (m *mainWindow) Shutdown() error {
+	return nil
+}
+
+func (m *mainWindow) stopApp() {
+	if err := m.app.Shutdown(); err != nil {
+		slog.Error("Failed to stop Bunker!", "error", err.Error())
+
+		os.Exit(commons.ExitCodeAppStopFailed)
+	}
+}