res_levis_backend/internal/pkg/common/appcontext/context.go

package appcontext

import (
	"github.com/AFASystems/presence/internal/pkg/model"
)

// AppState provides centralized access to application state
type AppState struct {
	beacons       model.BeaconsList
	settings      model.Settings
	beaconEvents  model.BeaconEventList
	beaconsLookup map[string]struct{}
	latestList    model.LatestBeaconsList
}

// NewAppState creates a new application context AppState with default values
func NewAppState() *AppState {
	return &AppState{
		beacons: model.BeaconsList{
			Beacons: make(map[string]model.Beacon),
		},
		settings: model.Settings{
			Settings: model.SettingsVal{
				LocationConfidence:   4,
				LastSeenThreshold:    15,
				BeaconMetricSize:     30,
				HASendInterval:       5,
				HASendChangesOnly:    false,
				RSSIEnforceThreshold: false,
				RSSIMinThreshold:     100,
			},
		},
		beaconEvents: model.BeaconEventList{
			Beacons: make(map[string]model.BeaconEvent),
		},
		beaconsLookup: make(map[string]struct{}),
		latestList: model.LatestBeaconsList{
			LatestList: make(map[string]model.Beacon),
		},
	}
}

// GetBeacons returns thread-safe access to beacons list
func (m *AppState) GetBeacons() *model.BeaconsList {
	return &m.beacons
}

// GetSettings returns thread-safe access to settings
func (m *AppState) GetSettings() *model.Settings {
	return &m.settings
}

// GetBeaconEvents returns thread-safe access to beacon events
func (m *AppState) GetBeaconEvents() *model.BeaconEventList {
	return &m.beaconEvents
}

// GetBeaconsLookup returns thread-safe access to beacon lookup map
func (m *AppState) GetBeaconsLookup() map[string]struct{} {
	return m.beaconsLookup
}

// GetLatestList returns thread-safe access to latest beacons list
func (m *AppState) GetLatestList() *model.LatestBeaconsList {
	return &m.latestList
}

// AddBeaconToLookup adds a beacon ID to the lookup map
func (m *AppState) AddBeaconToLookup(id string) {
	m.beaconsLookup[id] = struct{}{}
}

// RemoveBeaconFromLookup removes a beacon ID from the lookup map
func (m *AppState) RemoveBeaconFromLookup(id string) {
	delete(m.beaconsLookup, id)
}

// BeaconExists checks if a beacon exists in the lookup
func (m *AppState) BeaconExists(id string) bool {
	_, exists := m.beaconsLookup[id]
	return exists
}

// GetBeacon returns a beacon by ID (thread-safe)
func (m *AppState) GetBeacon(id string) (model.Beacon, bool) {
	m.beacons.Lock.RLock()
	defer m.beacons.Lock.RUnlock()

	beacon, exists := m.beacons.Beacons[id]
	return beacon, exists
}

// UpdateBeacon updates a beacon in the list (thread-safe)
func (m *AppState) UpdateBeacon(id string, beacon model.Beacon) {
	m.beacons.Lock.Lock()
	defer m.beacons.Lock.Unlock()

	m.beacons.Beacons[id] = beacon
}

// GetBeaconEvent returns a beacon event by ID (thread-safe)
func (m *AppState) GetBeaconEvent(id string) (model.BeaconEvent, bool) {
	m.beaconEvents.Lock.RLock()
	defer m.beaconEvents.Lock.RUnlock()

	event, exists := m.beaconEvents.Beacons[id]
	return event, exists
}

// UpdateBeaconEvent updates a beacon event in the list (thread-safe)
func (m *AppState) UpdateBeaconEvent(id string, event model.BeaconEvent) {
	m.beaconEvents.Lock.Lock()
	defer m.beaconEvents.Lock.Unlock()

	m.beaconEvents.Beacons[id] = event
}

// GetLatestBeacon returns the latest beacon by ID (thread-safe)
func (m *AppState) GetLatestBeacon(id string) (model.Beacon, bool) {
	m.latestList.Lock.RLock()
	defer m.latestList.Lock.RUnlock()

	beacon, exists := m.latestList.LatestList[id]
	return beacon, exists
}

// UpdateLatestBeacon updates the latest beacon in the list (thread-safe)
func (m *AppState) UpdateLatestBeacon(id string, beacon model.Beacon) {
	m.latestList.Lock.Lock()
	defer m.latestList.Lock.Unlock()

	m.latestList.LatestList[id] = beacon
}

// GetAllBeacons returns a copy of all beacons
func (m *AppState) GetAllBeacons() map[string]model.Beacon {
	m.beacons.Lock.RLock()
	defer m.beacons.Lock.RUnlock()

	beacons := make(map[string]model.Beacon)
	for id, beacon := range m.beacons.Beacons {
		beacons[id] = beacon
	}
	return beacons
}

// GetAllLatestBeacons returns a copy of all latest beacons
func (m *AppState) GetAllLatestBeacons() map[string]model.Beacon {
	m.latestList.Lock.RLock()
	defer m.latestList.Lock.RUnlock()

	beacons := make(map[string]model.Beacon)
	for id, beacon := range m.latestList.LatestList {
		beacons[id] = beacon
	}
	return beacons
}

// GetBeaconCount returns the number of tracked beacons
func (m *AppState) GetBeaconCount() int {
	m.beacons.Lock.RLock()
	defer m.beacons.Lock.RUnlock()

	return len(m.beacons.Beacons)
}

// GetSettingsValue returns current settings as a value
func (m *AppState) GetSettingsValue() model.SettingsVal {
	m.settings.Lock.RLock()
	defer m.settings.Lock.RUnlock()

	return m.settings.Settings
}

// UpdateSettings updates the system settings (thread-safe)
func (m *AppState) UpdateSettings(newSettings model.SettingsVal) {
	m.settings.Lock.Lock()
	defer m.settings.Lock.Unlock()

	m.settings.Settings = newSettings
}