refactor: optimize system updates and create systems package

- Created SystemManager to handle system lifecycle and events
- Created tests for system management operations
- Added test helpers for creating and managing test systems
- Introduced optional port configuration in system config

beszel/internal/hub/systems/systems_test_helpers.go

@@ -0,0 +1,117 @@
+//go:build testing
+// +build testing
+
+package systems
+
+import (
+	entities "beszel/internal/entities/system"
+	"context"
+	"fmt"
+)
+
+// GetSystemCount returns the number of systems in the store
+func (sm *SystemManager) GetSystemCount() int {
+	return sm.systems.Length()
+}
+
+// HasSystem checks if a system with the given ID exists in the store
+func (sm *SystemManager) HasSystem(systemID string) bool {
+	return sm.systems.Has(systemID)
+}
+
+// GetSystemStatusFromStore returns the status of a system with the given ID
+// Returns an empty string if the system doesn't exist
+func (sm *SystemManager) GetSystemStatusFromStore(systemID string) string {
+	sys, ok := sm.systems.GetOk(systemID)
+	if !ok {
+		return ""
+	}
+	return sys.Status
+}
+
+// GetSystemContextFromStore returns the context and cancel function for a system
+func (sm *SystemManager) GetSystemContextFromStore(systemID string) (context.Context, context.CancelFunc, error) {
+	sys, ok := sm.systems.GetOk(systemID)
+	if !ok {
+		return nil, nil, fmt.Errorf("no system")
+	}
+	return sys.ctx, sys.cancel, nil
+}
+
+// GetSystemFromStore returns a store from the system
+func (sm *SystemManager) GetSystemFromStore(systemID string) (*System, error) {
+	sys, ok := sm.systems.GetOk(systemID)
+	if !ok {
+		return nil, fmt.Errorf("no system")
+	}
+	return sys, nil
+}
+
+// GetAllSystemIDs returns a slice of all system IDs in the store
+func (sm *SystemManager) GetAllSystemIDs() []string {
+	data := sm.systems.GetAll()
+	ids := make([]string, 0, len(data))
+	for id := range data {
+		ids = append(ids, id)
+	}
+	return ids
+}
+
+// GetSystemData returns the combined data for a system with the given ID
+// Returns nil if the system doesn't exist
+// This method is intended for testing
+func (sm *SystemManager) GetSystemData(systemID string) *entities.CombinedData {
+	sys, ok := sm.systems.GetOk(systemID)
+	if !ok {
+		return nil
+	}
+	return sys.data
+}
+
+// GetSystemHostPort returns the host and port for a system with the given ID
+// Returns empty strings if the system doesn't exist
+func (sm *SystemManager) GetSystemHostPort(systemID string) (string, string) {
+	sys, ok := sm.systems.GetOk(systemID)
+	if !ok {
+		return "", ""
+	}
+	return sys.Host, sys.Port
+}
+
+// DisableAutoUpdater disables the automatic updater for a system
+// This is intended for testing
+// Returns false if the system doesn't exist
+// func (sm *SystemManager) DisableAutoUpdater(systemID string) bool {
+// 	sys, ok := sm.systems.GetOk(systemID)
+// 	if !ok {
+// 		return false
+// 	}
+// 	if sys.cancel != nil {
+// 		sys.cancel()
+// 		sys.cancel = nil
+// 	}
+// 	return true
+// }
+
+// SetSystemStatusInDB sets the status of a system directly and updates the database record
+// This is intended for testing
+// Returns false if the system doesn't exist
+func (sm *SystemManager) SetSystemStatusInDB(systemID string, status string) bool {
+	if !sm.HasSystem(systemID) {
+		return false
+	}
+
+	// Update the database record
+	record, err := sm.hub.FindRecordById("systems", systemID)
+	if err != nil {
+		return false
+	}
+
+	record.Set("status", status)
+	err = sm.hub.Save(record)
+	if err != nil {
+		return false
+	}
+
+	return true
+}