Merge pull request #41 from intonarumori/issue40-signification-location-updates

Added monitoring significant location changes

Author: gre4ixin

Sources/AsyncLocationKit/AsyncLocationManager.swift

@@ -30,6 +30,7 @@ public typealias LocationEnabledStream = AsyncStream<LocationEnabledEvent>
 public typealias LocationStream = AsyncStream<LocationUpdateEvent>
 public typealias RegionMonitoringStream = AsyncStream<RegionMonitoringEvent>
 public typealias VisitMonitoringStream = AsyncStream<VisitMonitoringEvent>
+public typealias SignificantLocationChangeMonitoringStream = AsyncStream<SignificantLocationChangeEvent>
 public typealias HeadingMonitorStream = AsyncStream<HeadingMonitorEvent>
 public typealias AuthorizationStream = AsyncStream<AuthorizationEvent>
 public typealias AccuracyAuthorizationStream = AsyncStream<AccuracyAuthorizationEvent>
@@ -280,6 +281,27 @@ public final class AsyncLocationManager {
         locationManager.stopMonitoringVisits()
     }
 
+    @available(watchOS, unavailable)
+    @available(tvOS, unavailable)
+    public func startMonitoringSignificantLocationChanges() async -> SignificantLocationChangeMonitoringStream {
+        let monitoringPerformer = SignificantLocationChangeMonitoringPerformer()
+        return SignificantLocationChangeMonitoringStream { streamContinuation in
+            monitoringPerformer.linkContinuation(streamContinuation)
+            proxyDelegate.addPerformer(monitoringPerformer)
+            locationManager.startMonitoringSignificantLocationChanges()
+            streamContinuation.onTermination = { @Sendable _ in
+                self.proxyDelegate.cancel(for: monitoringPerformer.uniqueIdentifier)
+            }
+        }
+    }
+    
+    @available(watchOS, unavailable)
+    @available(tvOS, unavailable)
+    public func stopMonitoringSignificantLocationChanges() {
+        locationManager.stopMonitoringSignificantLocationChanges()
+        proxyDelegate.cancel(for: SignificantLocationChangeMonitoringPerformer.self)
+    }
+    
 #if os(iOS)
     @available(iOS 13, *)
     public func startUpdatingHeading() async -> HeadingMonitorStream {

Sources/AsyncLocationKit/Performers/SignificantLocationChangeMonitoringPerformer.swift

@@ -0,0 +1,73 @@
+//  MIT License
+//
+//  Copyright (c) 2023 AsyncSwift
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+
+import Foundation
+import CoreLocation
+
+public enum SignificantLocationChangeEvent {
+    case didPaused
+    case didResume
+    case didUpdateLocations(locations: [CLLocation])
+    case didFailWith(error: Error)
+}
+
+class SignificantLocationChangeMonitoringPerformer: AnyLocationPerformer {
+    var typeIdentifier: ObjectIdentifier {
+        return ObjectIdentifier(Self.self)
+    }
+    
+    var uniqueIdentifier: UUID = UUID()
+    
+    var eventsSupport: [CoreLocationEventSupport] = [.didUpdateLocations, .locationUpdatesPaused, .locationUpdatesResume, .didFailWithError]
+    
+    var cancellable: Cancellable?
+    var stream: SignificantLocationChangeMonitoringStream.Continuation?
+    
+    func linkContinuation(_ continuation: SignificantLocationChangeMonitoringStream.Continuation) {
+        stream = continuation
+    }
+    
+    func eventSupported(_ event: CoreLocationDelegateEvent) -> Bool {
+        return eventsSupport.contains(event.rawEvent())
+    }
+    
+    func invokedMethod(event: CoreLocationDelegateEvent) {
+        switch event {
+        case .didUpdate(let locations):
+            stream?.yield(.didUpdateLocations(locations: locations))
+        case .locationUpdatesPaused:
+            stream?.yield(.didPaused)
+        case .locationUpdatesResume:
+            stream?.yield(.didResume)
+        case .didFailWithError(let error):
+            stream?.yield(.didFailWith(error: error))
+        default:
+            fatalError("Method can't be execute by this performer: \(String(describing: self)) for event: \(type(of: event))")
+        }
+    }
+    
+    func cancelation() {
+        guard let stream = stream else { return }
+        stream.finish()
+        self.stream = nil
+    }
+}