Merge pull request #127 from hotwired/path-config-request

Allow passing URLRequest as PathConfiguration source

Source/Path Configuration/PathConfiguration.swift

@@ -7,6 +7,16 @@ public protocol PathConfigurationDelegate: AnyObject {
     func pathConfigurationDidUpdate()
 }
 
+public struct PathConfigurationLoaderOptions {
+    public init(urlSessionConfiguration: URLSessionConfiguration? = nil) {
+        self.urlSessionConfiguration = urlSessionConfiguration
+    }
+
+    /// If present, the ``PathConfigurationLoader`` will initialize a new `URLSession` with
+    /// this configuration to make its network request
+    public let urlSessionConfiguration: URLSessionConfiguration?
+}
+
 public final class PathConfiguration {
     public weak var delegate: PathConfigurationDelegate?
 
@@ -26,8 +36,9 @@ public final class PathConfiguration {
 
     /// Multiple sources will be loaded in order
     /// Remote sources should be last since they're loaded async
-    public init(sources: [Source] = []) {
+    public init(sources: [Source] = [], options: PathConfigurationLoaderOptions? = nil) {
         self.sources = sources
+        self.options = options
         load()
     }
 
@@ -63,11 +74,13 @@ public final class PathConfiguration {
     }
 
     // MARK: - Loading
+
+    private let options: PathConfigurationLoaderOptions?
 
     private var loader: PathConfigurationLoader?
-
+    
     private func load() {
-        loader = PathConfigurationLoader(sources: sources)
+        loader = PathConfigurationLoader(sources: sources, options: options)
         loader?.load { [weak self] config in
             self?.update(with: config)
         }

Source/Path Configuration/PathConfigurationLoader.swift

@@ -6,10 +6,12 @@ final class PathConfigurationLoader {
     private let cacheDirectory = "Turbo"
     private let configurationCacheFilename = "path-configuration.json"
     private let sources: [PathConfiguration.Source]
+    private let options: PathConfigurationLoaderOptions?
     private var completionHandler: PathConfigurationLoaderCompletionHandler?
 
-    init(sources: [PathConfiguration.Source]) {
+    init(sources: [PathConfiguration.Source], options: PathConfigurationLoaderOptions? = nil) {
         self.sources = sources
+        self.options = options
     }
 
     func load(then completion: @escaping PathConfigurationLoaderCompletionHandler) {
@@ -37,7 +39,9 @@ final class PathConfigurationLoader {
             loadData(data)
         }
 
-        URLSession.shared.dataTask(with: url) { [weak self] data, response, error in
+        let session = options?.urlSessionConfiguration.map { URLSession(configuration: $0) } ?? URLSession.shared
+
+        session.dataTask(with: url) { [weak self] data, response, error in
             guard let data = data,
                 let httpResponse = response as? HTTPURLResponse,
                 httpResponse.statusCode == 200