RouteOptions.alleyPriority, walkwayPriority, speed are now optional

CHANGELOG.md

@@ -10,6 +10,7 @@
 * Carthage v0.38 or above is now required for installing this SDK if you use Carthage. ([#548](https://github.com/mapbox/mapbox-directions-swift/pull/548))
 * Xcode 12.0 or above is now required to build MapboxDirections from source. ([#548](https://github.com/mapbox/mapbox-directions-swift/pull/548))
 * You can fully build this SDK on Macs with Apple Silicon. ([#548](https://github.com/mapbox/mapbox-directions-swift/pull/548))
+* `RouteOptions.alleyPriority`, `RouteOptions.walkwayPriority`, and `RouteOptions.speed` are now optional. Set them explicitly if you want to include them in the HTTP request. Renamed `DirectionsOptions.default` to `DirectionsOptions.medium`. ([#557](https://github.com/mapbox/mapbox-directions-swift/pull/557))
 
 ## v1.2.0
 

Sources/MapboxDirections/DirectionsOptions.swift

@@ -99,7 +99,7 @@ public struct DirectionsPriority: Hashable, RawRepresentable {
     /**
      The priority level with which a route neither avoids nor prefers a particular type of roadway or pathway.
      */
-    static let `default` = DirectionsPriority(rawValue: 0.0)
+    static let medium = DirectionsPriority(rawValue: 0.0)
 
     /**
      The priority level with which a route prefers a particular type of roadway or pathway.

Sources/MapboxDirections/RouteOptions.swift

@@ -123,31 +123,34 @@ open class RouteOptions: DirectionsOptions {
     open var roadClassesToAvoid: RoadClasses = []
 
     /**
-     A number that influences whether the route should prefer or avoid alleys or narrow service roads between buildings.
+     The number that influences whether the route should prefer or avoid alleys or narrow service roads between buildings.
+     If this property isn't explicitly set, the Directions API will choose the most reasonable value.
 
      This property has no effect unless the profile identifier is set to `DirectionsProfileIdentifier.automobile` or `DirectionsProfileIdentifier.walking`.
 
-     The value of this property must be at least `DirectionsPriority.low` and at most `DirectionsPriority.high`. The default value of `DirectionsPriority.default` neither prefers nor avoids alleys, while a negative value between `DirectionsPriority.low` and `DirectionsPriority.default` avoids alleys, and a positive value between `DirectionsPriority.default` and `DirectionsPriority.high` prefers alleys. A value of 0.9 is suitable for pedestrians who are comfortable with walking down alleys.
+     The value of this property must be at least `DirectionsPriority.low` and at most `DirectionsPriority.high`. `DirectionsPriority.medium` neither prefers nor avoids alleys, while a negative value between `DirectionsPriority.low` and `DirectionsPriority.medium` avoids alleys, and a positive value between `DirectionsPriority.medium` and `DirectionsPriority.high` prefers alleys. A value of 0.9 is suitable for pedestrians who are comfortable with walking down alleys.
      */
-    open var alleyPriority: DirectionsPriority = .default
+    open var alleyPriority: DirectionsPriority?
 
     /**
-     A number that influences whether the route should prefer or avoid roads or paths that are set aside for pedestrian-only use (walkways or footpaths).
+     The number that influences whether the route should prefer or avoid roads or paths that are set aside for pedestrian-only use (walkways or footpaths).
+     If this property isn't explicitly set, the Directions API will choose the most reasonable value.
 
      This property has no effect unless the profile identifier is set to `DirectionsProfileIdentifier.walking`. You can adjust this property to avoid [sidewalks and crosswalks that are mapped as separate footpaths](https://wiki.openstreetmap.org/wiki/Sidewalks#Sidewalk_as_separate_way), which may be more granular than needed for some forms of pedestrian navigation.
 
-     The value of this property must be at least `DirectionsPriority.low` and at most `DirectionsPriority.high`. The default value of `DirectionsPriority.default` neither prefers nor avoids walkways, while a negative value between `DirectionsPriority.low` and `DirectionsPriority.default` avoids walkways, and a positive value between `DirectionsPriority.default` and `DirectionsPriority.high` prefers walkways. A value of −0.1 results in less verbose routes in cities where sidewalks and crosswalks are generally mapped as separate footpaths.
+     The value of this property must be at least `DirectionsPriority.low` and at most `DirectionsPriority.high`. `DirectionsPriority.medium` neither prefers nor avoids walkways, while a negative value between `DirectionsPriority.low` and `DirectionsPriority.medium` avoids walkways, and a positive value between `DirectionsPriority.medium` and `DirectionsPriority.high` prefers walkways. A value of −0.1 results in less verbose routes in cities where sidewalks and crosswalks are generally mapped as separate footpaths.
      */
-    open var walkwayPriority: DirectionsPriority = .default
+    open var walkwayPriority: DirectionsPriority?
 
     /**
      The expected uniform travel speed measured in meters per second.
+     If this property isn't explicitly set, the Directions API will choose the most reasonable value.
 
      This property has no effect unless the profile identifier is set to `DirectionsProfileIdentifier.walking`. You can adjust this property to account for running or for faster or slower gaits. When the profile identifier is set to another profile identifier, such as `DirectionsProfileIdentifier.driving`, this property is ignored in favor of the expected travel speed on each road along the route. This property may be supported by other routing profiles in the future.
 
-     The value of this property must be at least `CLLocationSpeed.minimumWalking` and at most `CLLocationSpeed.maximumWalking`. The default value is `CLLocationSpeed.normalWalking`.
+     The value of this property must be at least `CLLocationSpeed.minimumWalking` and at most `CLLocationSpeed.maximumWalking`. `CLLocationSpeed.normalWalking` corresponds to a typical preferred walking speed.
      */
-    open var speed: LocationSpeed = .normalWalking
+    open var speed: LocationSpeed?
 
     // MARK: Specifying the Response Format
 
@@ -187,12 +190,15 @@ open class RouteOptions: DirectionsOptions {
         if includesExitRoundaboutManeuver {
             params.append(URLQueryItem(name: "roundabout_exits", value: String(includesExitRoundaboutManeuver)))
         }
-
-        if profileIdentifier == .automobile || profileIdentifier == .walking {
-            params.append(URLQueryItem(name: "alley_bias", value: String(alleyPriority.rawValue)))
+        if let alleyPriority = alleyPriority?.rawValue {
+            params.append(URLQueryItem(name: "alley_bias", value: String(alleyPriority)))
+        }
+
+        if let walkwayPriority = walkwayPriority?.rawValue {
+            params.append(URLQueryItem(name: "walkway_bias", value: String(walkwayPriority)))
         }
-        if profileIdentifier == .walking {
-            params.append(URLQueryItem(name: "walkway_bias", value: String(walkwayPriority.rawValue)))
+
+        if let speed = speed {
             params.append(URLQueryItem(name: "walking_speed", value: String(speed)))
         }
 
@@ -219,7 +225,7 @@ open class RouteOptions: DirectionsOptions {
 
 extension LocationSpeed {
     /**
-     By default, pedestrians are assumed to walk at an average rate of 1.42 meters per second (5.11 kilometers per hour or 3.18 miles per hour), corresponding to a typical preferred walking speed.
+     Pedestrians are assumed to walk at an average rate of 1.42 meters per second (5.11 kilometers per hour or 3.18 miles per hour), corresponding to a typical preferred walking speed.
      */
     static let normalWalking: LocationSpeed = 1.42
 

Tests/MapboxDirectionsTests/DirectionsTests.swift

@@ -62,7 +62,7 @@ class DirectionsTests: XCTestCase {
         XCTAssertLessThanOrEqual(url.absoluteString.count, MaximumURLLength, "maximumCoordinateCount is too high")
 
         let components = URLComponents(string: url.absoluteString)
-        XCTAssertEqual(components?.queryItems?.count, 8)
+        XCTAssertEqual(components?.queryItems?.count, 7)
         XCTAssertTrue(components?.path.contains(coordinates.compactMap { $0.requestDescription }.joined(separator: ";")) ?? false)
 
         let request = directions.urlRequest(forCalculating: options)
@@ -73,6 +73,7 @@ class DirectionsTests: XCTestCase {
     func testPOSTRequest() {
         let coordinates = Array(repeating: LocationCoordinate2D(latitude: 0, longitude: 0), count: maximumCoordinateCount + 1)
         let options = RouteOptions(coordinates: coordinates)
+        options.alleyPriority = .medium
 
         let directions = Directions(credentials: BogusCredentials)
         let request = directions.urlRequest(forCalculating: options)

Tests/MapboxDirectionsTests/WalkingOptionsTests.swift

@@ -12,10 +12,9 @@ class WalkingOptionsTests: XCTestCase {
 
         let options = RouteOptions(waypoints: waypoints, profileIdentifier: DirectionsProfileIdentifier.walking)
         var queryItems = options.urlQueryItems
-
-         XCTAssertEqual(queryItems.first { $0.name == "alley_bias" }?.value, "0.0")
-        XCTAssertEqual(queryItems.first { $0.name == "walkway_bias" }?.value, "0.0")
-        XCTAssertEqual(queryItems.first { $0.name == "walking_speed" }?.value, "1.42")
+        XCTAssertNil(queryItems.first { $0.name == "alley_bias" }?.value)
+        XCTAssertNil(queryItems.first { $0.name == "walkway_bias" }?.value)
+        XCTAssertNil(queryItems.first { $0.name == "walking_speed" }?.value)
 
         options.alleyPriority = DirectionsPriority(rawValue: 0.4)
         options.walkwayPriority = DirectionsPriority(rawValue: 0.5)