feat!: expand to internal project, add app layer, develop service layer

internal/app/app.go

@@ -0,0 +1,148 @@
+package app
+
+import (
+	"log/slog"
+	"sync"
+)
+
+// App represents the main application layer that is generic and cross-platform
+type App struct {
+	logger *slog.Logger
+	mu     sync.RWMutex
+	state  AppState
+}
+
+// AppState represents the current state of the application
+type AppState string
+
+const (
+	StateRunning AppState = "running"
+	StatePaused  AppState = "paused"
+	StateStopped AppState = "stopped"
+)
+
+// NewApp creates a new application instance
+func NewApp(logger *slog.Logger) *App {
+	return &App{
+		logger: logger,
+		state:  StateRunning,
+	}
+}
+
+// Pause disconnects from the server and ceases any background tasks
+func (a *App) Pause() error {
+	a.mu.Lock()
+	defer a.mu.Unlock()
+
+	a.logger.Info("Pausing application",
+		"action", "pause",
+		"previous_state", a.state,
+		"new_state", StatePaused)
+
+	// TODO: Implement actual pause logic
+	// - Disconnect from Home Assistant WebSocket
+	// - Stop background tasks
+	// - Pause sensor monitoring
+
+	a.state = StatePaused
+
+	a.logger.Info("Application paused successfully",
+		"action", "pause",
+		"state", a.state)
+
+	return nil
+}
+
+// Resume connects to the server and initiates background tasks
+func (a *App) Resume() error {
+	a.mu.Lock()
+	defer a.mu.Unlock()
+
+	a.logger.Info("Resuming application",
+		"action", "resume",
+		"previous_state", a.state,
+		"new_state", StateRunning)
+
+	// TODO: Implement actual resume logic
+	// - Connect to Home Assistant WebSocket
+	// - Start background tasks
+	// - Resume sensor monitoring
+
+	a.state = StateRunning
+
+	a.logger.Info("Application resumed successfully",
+		"action", "resume",
+		"state", a.state)
+
+	return nil
+}
+
+// Reload pauses the application, re-reads configuration files, then resumes
+func (a *App) Reload() error {
+	a.logger.Info("Starting application reload",
+		"action", "reload",
+		"current_state", a.state)
+
+	// Pause if not already paused
+	if a.state != StatePaused {
+		if err := a.Pause(); err != nil {
+			a.logger.Error("Failed to pause during reload",
+				"action", "reload",
+				"error", err)
+			return err
+		}
+	}
+
+	// TODO: Implement configuration reload logic
+	// - Re-read TOML configuration files
+	// - Validate configuration
+	// - Update internal state with new configuration
+
+	a.logger.Info("Configuration reloaded successfully",
+		"action", "reload")
+
+	// Resume the application
+	if err := a.Resume(); err != nil {
+		a.logger.Error("Failed to resume after reload",
+			"action", "reload",
+			"error", err)
+		return err
+	}
+
+	a.logger.Info("Application reload completed successfully",
+		"action", "reload",
+		"final_state", a.state)
+
+	return nil
+}
+
+// GetState returns the current state of the application
+func (a *App) GetState() AppState {
+	a.mu.RLock()
+	defer a.mu.RUnlock()
+	return a.state
+}
+
+// Stop stops the application completely
+func (a *App) Stop() error {
+	a.mu.Lock()
+	defer a.mu.Unlock()
+
+	a.logger.Info("Stopping application",
+		"action", "stop",
+		"previous_state", a.state,
+		"new_state", StateStopped)
+
+	// TODO: Implement actual stop logic
+	// - Disconnect from all services
+	// - Clean up resources
+	// - Stop all background tasks
+
+	a.state = StateStopped
+
+	a.logger.Info("Application stopped successfully",
+		"action", "stop",
+		"state", a.state)
+
+	return nil
+}