Remove Objective-C compatibility; adopt Swift language features

CHANGELOG.md

@@ -2,7 +2,32 @@
 
 ## master
 
+### Packaging
+
 * This library now requires a minimum deployment target of iOS 10.0 or above, macOS 10.12.0 or above, tvOS 10.0 or above, or watchOS 3.0 or above. Older operating system versions are no longer supported. ([#379](https://github.com/mapbox/MapboxDirections.swift/pull/379))
+* Swift is now required to directly use public types and methods defined by this library. If your application is written in Objective-C or Cocoa-AppleScript, you need to implement your own wrapper in Swift that bridges to Objective-C. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* This library now depends on [Turf](https://github.com/mapbox/turf-swift/). ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+
+### Error handling
+
+* The `RouteCompletionHandler` and `MatchCompletionHandler` closures’ `error` argument is now a `DirectionsError` instead of an `NSError`. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* Classes such as `Route`, `Match`, and `RouteStep` conform to the `Codable` protocol, so you can create instances of them from JSON-formatted `Data` using `JSONDecoder` and round-trip them back to JSON using `JSONEncoder`. Malformed input now throws decoding errors instead of crashing by unwrapping `nil`s. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+
+### Visual instructions
+
+* Removed the `Lane` class in favor of storing an array of `LaneIndication`s directly in the `Intersection.approachLanes` property. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* Removed the `ComponentRepresentable` protocol, `VisualInstructionComponent` class, and `LaneIndicationComponent` class in favor of a `VisualInstruction.Component` enumeration that contains a `VisualInstruction.Component.TextRepresentation` and/or `VisualInstruction.Component.ImageRepresentation`, depending on the type of component. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* Added the `VisualInstruction.Component.ImageRepresentation.imageURL(scale:format:)` method for fetching images with scales other than the current screen’s native scale or formats other than PNG. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+
+### Other changes
+
+* Removed support for [Mapbox Directions API v4](https://docs.mapbox.com/api/legacy/directions-v4/). ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* Replaced the `MBDefaultWalkingSpeed`, `MBMinimumWalkingSpeed`, and `MBMaximumWalkingSpeed` constants with `CLLocationSpeed.normalWalking`, `CLLocationSpeed.minimumWalking`, and `CLLocationSpeed.maximumWalking`, respectively.
+* Replaced the `Route.coordinates` property with `Route.shape` and the `RouteStep.coordinates` property with `RouteStep.shape`. The `Route.coordinateCount` and `RouteStep.coordinateCount` properties have been removed, but you can use the `LineString.coordinates` property to get the array of `CLLocationCoordinate2D`s. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* `RouteLeg.source` and `RouteLeg.destination` are now optional. They can be `nil` when the `RouteLeg` object is decoded individually from JSON. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* Removed `TransportType.none`, `ManeuverType.none`, and `ManeuverDirection.none`. Unrecognized `TransportType` and `ManeuverDirection` values now raise decoding errors. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* `RouteStep.maneuverType` is now optional. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
+* Renamed the `Tracepoint.alternateCount` property to `Tracepoint.countOfAlternatives`. ([#382](https://github.com/mapbox/MapboxDirections.swift/pull/382))
 
 ## v0.30.0
 

Cartfile

@@ -1 +1,2 @@
 github "raphaelmor/Polyline" ~> 4.2
+github "mapbox/turf-swift" ~> 0.3

Cartfile.resolved

@@ -1,3 +1,4 @@
-binary "https://www.mapbox.com/ios-sdk/Mapbox-iOS-SDK.json" "4.11.1"
+binary "https://www.mapbox.com/ios-sdk/Mapbox-iOS-SDK.json" "4.11.2"
 github "linksmt/OHHTTPStubs" "563f48d3fab84ef04639649c770b00f4fa502cca"
+github "mapbox/turf-swift" "v0.3.0"
 github "raphaelmor/Polyline" "v4.2.1"

Directions Example/Info.plist

@@ -22,6 +22,8 @@
 	<string>44</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>NSLocationWhenInUseUsageDescription</key>
+	<string>Use the user location to fetch a route from their current position.</string>
 	<key>UILaunchStoryboardName</key>
 	<string>Launch Screen</string>
 	<key>UIRequiredDeviceCapabilities</key>
@@ -41,7 +43,5 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
-	<key>NSLocationWhenInUseUsageDescription</key>
-	<string>Use the user location to fetch a route from their current position.</string>
 </dict>
 </plist>

Directions Example/MBDrawingView.swift

@@ -5,7 +5,6 @@ public protocol MBDrawingViewDelegate: class {
 }
 
 public class MBDrawingView: UIView {
-
     private var points: [CGPoint]!
     private var context: CGContext!
     private var strokeColor = UIColor.blue.withAlphaComponent(0.75) {

Directions Example/ViewController.swift

@@ -65,14 +65,12 @@ class ViewController: UIViewController, MBDrawingViewDelegate {
     func setupDirections() {
         let wp1 = Waypoint(coordinate: CLLocationCoordinate2D(latitude: 38.9131752, longitude: -77.0324047), name: "Mapbox")
         let wp2 = Waypoint(coordinate: CLLocationCoordinate2D(latitude: 38.8977, longitude: -77.0365), name: "White House")
-        wp1.allowsArrivingOnOppositeSide = false
-        wp2.allowsArrivingOnOppositeSide = false
         let options = RouteOptions(waypoints: [wp1, wp2])
         options.includesSteps = true
 
         Directions.shared.calculate(options) { (waypoints, routes, error) in
-            guard error == nil else {
-                print("Error calculating directions: \(error!)")
+            if let error = error {
+                print("Error calculating directions: \(error)")
                 return
             }
 
@@ -96,14 +94,16 @@ class ViewController: UIViewController, MBDrawingViewDelegate {
                     }
                 }
 
-                if route.coordinateCount > 0 {
+                if var routeCoordinates = route.shape?.coordinates, routeCoordinates.count > 0 {
                     // Convert the route’s coordinates into a polyline.
-                    var routeCoordinates = route.coordinates!
-                    let routeLine = MGLPolyline(coordinates: &routeCoordinates, count: route.coordinateCount)
-
-                    // Add the polyline to the map and fit the viewport to the polyline.
+                    let routeLine = MGLPolyline(coordinates: &routeCoordinates, count: UInt(routeCoordinates.count))
+
+                    // Add the polyline to the map.
                     self.mapView.addAnnotation(routeLine)
-                    self.mapView.setVisibleCoordinates(&routeCoordinates, count: route.coordinateCount, edgePadding: .zero, animated: true)
+
+                    // Fit the viewport to the polyline.
+                    let camera = self.mapView.cameraThatFitsShape(routeLine, direction: 0, edgePadding: .zero)
+                    self.mapView.setCamera(camera, animated: true)
                 }
             }
         }
@@ -123,8 +123,16 @@ class ViewController: UIViewController, MBDrawingViewDelegate {
     }
 
     func drawingView(drawingView: MBDrawingView, didDrawWithPoints points: [CGPoint]) {
+        guard points.count > 0 else { return }
 
-        let coordinates = points.map {
+        let ratio: Double = Double(points.count) / 100.0
+        let keepEvery = Int(ratio.rounded(.up))
+
+        let abridgedPoints = points.enumerated().compactMap { index, element -> CGPoint? in
+            guard index % keepEvery == 0 else { return nil }
+            return element
+        }
+        let coordinates = abridgedPoints.map {
             mapView.convert($0, toCoordinateFrom: mapView)
         }
         makeMatchRequest(locations: coordinates)
@@ -135,7 +143,14 @@ class ViewController: UIViewController, MBDrawingViewDelegate {
 
         Directions.shared.calculate(matchOptions) { (matches, error) in
             if let error = error {
-                print(error.localizedDescription)
+                let errorString = """
+                ⚠️ Error Enountered. ⚠️
+                Failure Reason: \(error.failureReason ?? "")
+                Recovery Suggestion: \(error.recoverySuggestion ?? "")
+
+                Technical Details: \(error)
+                """
+                print(errorString)
                 return
             }
 
@@ -145,8 +160,9 @@ class ViewController: UIViewController, MBDrawingViewDelegate {
                 self.mapView.removeAnnotations(annotations)
             }
 
-            var routeCoordinates = match.coordinates!
-            let routeLine = MGLPolyline(coordinates: &routeCoordinates, count: match.coordinateCount)
+            var routeCoordinates = match.shape!.coordinates
+            let coordCount = UInt(routeCoordinates.count)
+            let routeLine = MGLPolyline(coordinates: &routeCoordinates, count: coordCount)
             self.mapView.addAnnotation(routeLine)
             self.drawingView?.reset()
         }

MapboxDirections.swift.podspec

@@ -37,8 +37,7 @@ Pod::Spec.new do |s|
 
   # ――― Source Code ―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――― #
 
-  s.source_files  = ["Sources/MapboxDirections", "Sources/MapboxDirections/*/*", "Sources/CMapboxDirections", "Sources/CMapboxDirections/*/*"]
-  s.exclude_files = ["Sources/CMapboxDirections/CMapboxDirections.h"]
+  s.source_files  = ["Sources/MapboxDirections", "Sources/MapboxDirections/*/*"]
 
   # ――― Project Settings ――――――――――――――――――――――――――――――――――――――――――――――――――――――――― #
 
@@ -47,5 +46,6 @@ Pod::Spec.new do |s|
   s.swift_version = "5.0"
 
   s.dependency "Polyline", "~> 4.2"
+  s.dependency "Turf", "~> 0.3"
 
 end