COVIDSafe code from version 2.0 (#37)

2025-04-19 13:05:21 +00:00 · 2020-12-19 16:13:44 +11:00 · 2020-12-19 16:13:44 +11:00 · 8b75c1fc6f
commit 8b75c1fc6f
parent cf93ea43c0
55 changed files with 4624 additions and 1117 deletions
--- a/CovidSafe/Herald/Sensor/Location/AwakeSensor.swift
+++ b/CovidSafe/Herald/Sensor/Location/AwakeSensor.swift
@ -0,0 +1,122 @@
+//
+//  AwakeSensor.swift
+//
+//  Copyright 2020 VMware, Inc.
+//  SPDX-License-Identifier: MIT
+//
+
+import Foundation
+import CoreLocation
+
+protocol AwakeSensor : Sensor {
+}
+
+/**
+ Screen awake sensor based on CoreLocation. Does NOT make use of the GPS position
+ Requires : Signing & Capabilities : BackgroundModes : LocationUpdates = YES
+ Requires : Info.plist : Privacy - Location When In Use Usage Description
+ Requires : Info.plist : Privacy - Location Always and When In Use Usage Description
+ */
+class ConcreteAwakeSensor : NSObject, AwakeSensor, CLLocationManagerDelegate {
+    private let logger = ConcreteSensorLogger(subsystem: "Sensor", category: "ConcreteAwakeSensor")
+    private var delegates: [SensorDelegate] = []
+    private let locationManager = CLLocationManager()
+    private let rangeForBeacon: UUID?
+
+    init(desiredAccuracy: CLLocationAccuracy = kCLLocationAccuracyThreeKilometers, distanceFilter: CLLocationDistance = CLLocationDistanceMax, rangeForBeacon: UUID? = nil) {
+        logger.debug("init(desiredAccuracy=\(desiredAccuracy == kCLLocationAccuracyThreeKilometers ? "3km" : desiredAccuracy.description),distanceFilter=\(distanceFilter == CLLocationDistanceMax ? "max" : distanceFilter.description),rangeForBeacon=\(rangeForBeacon == nil ? "disabled" : rangeForBeacon!.description))")
+        self.rangeForBeacon = rangeForBeacon
+        super.init()
+        locationManager.delegate = self
+        locationManager.requestAlwaysAuthorization()
+        locationManager.pausesLocationUpdatesAutomatically = false
+        locationManager.desiredAccuracy = desiredAccuracy
+        locationManager.distanceFilter = distanceFilter
+        locationManager.allowsBackgroundLocationUpdates = true
+        if #available(iOS 11.0, *) {
+            logger.debug("init(ios>=11.0)")
+            locationManager.showsBackgroundLocationIndicator = false
+        } else {
+            logger.debug("init(ios<11.0)")
+        }
+    }
+    
+    func add(delegate: SensorDelegate) {
+        delegates.append(delegate)
+    }
+    
+    func start() {
+        logger.debug("start")
+        locationManager.startUpdatingLocation()
+        logger.debug("startUpdatingLocation")
+
+        // Start beacon ranging
+        guard let beaconUUID = rangeForBeacon else {
+            return
+        }
+        if #available(iOS 13.0, *) {
+            locationManager.startRangingBeacons(satisfying: CLBeaconIdentityConstraint(uuid: beaconUUID))
+            logger.debug("startRangingBeacons(ios>=13.0,beaconUUID=\(beaconUUID.description))")
+        } else {
+            let beaconRegion = CLBeaconRegion(proximityUUID: beaconUUID, identifier: beaconUUID.uuidString)
+            locationManager.startRangingBeacons(in: beaconRegion)
+            logger.debug("startRangingBeacons(ios<13.0,beaconUUID=\(beaconUUID.uuidString)))")
+        }
+        
+
+    }
+    
+    func stop() {
+        logger.debug("stop")
+        locationManager.stopUpdatingLocation()
+        logger.debug("stopUpdatingLocation")
+        // Start beacon ranging
+        guard let beaconUUID = rangeForBeacon else {
+            return
+        }
+        if #available(iOS 13.0, *) {
+            locationManager.stopRangingBeacons(satisfying: CLBeaconIdentityConstraint(uuid: beaconUUID))
+            logger.debug("stopRangingBeacons(ios>=13.0,beaconUUID=\(beaconUUID.description))")
+        } else {
+            let beaconRegion = CLBeaconRegion(proximityUUID: beaconUUID, identifier: beaconUUID.uuidString)
+            locationManager.stopRangingBeacons(in: beaconRegion)
+            logger.debug("stopRangingBeacons(ios<13.0,beaconUUID=\(beaconUUID.description))")
+        }
+    }
+    
+    // MARK:- CLLocationManagerDelegate    
+    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
+        var state = SensorState.off
+        
+        if status == CLAuthorizationStatus.authorizedWhenInUse ||
+            status == CLAuthorizationStatus.authorizedAlways {
+            state = .on
+        }
+        if status == CLAuthorizationStatus.notDetermined {
+            locationManager.requestAlwaysAuthorization()
+            locationManager.stopUpdatingLocation()
+            locationManager.startUpdatingLocation()
+        }
+        if status != CLAuthorizationStatus.notDetermined {
+            delegates.forEach({ $0.sensor(.AWAKE, didUpdateState: state) })
+        }
+    }
+
+    @available(iOS 14.0, *)
+    func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
+        var state = SensorState.off
+        if manager.authorizationStatus == CLAuthorizationStatus.authorizedWhenInUse ||
+            manager.authorizationStatus == CLAuthorizationStatus.authorizedAlways {
+            state = .on
+        }
+        if manager.authorizationStatus == CLAuthorizationStatus.notDetermined {
+            locationManager.requestAlwaysAuthorization()
+            locationManager.stopUpdatingLocation()
+            locationManager.startUpdatingLocation()
+        }
+        if manager.authorizationStatus != CLAuthorizationStatus.notDetermined {
+            delegates.forEach({ $0.sensor(.AWAKE, didUpdateState: state) })
+        }
+    }
+    
+}