Inject custom instance of the JSONDecoder from the WKRequest

Allows using a custom instance of the Decoder to be used in each request

Sources/WireKit/Protocols/WKRequest.swift

@@ -37,6 +37,7 @@ public protocol WKRequest {
     var queryParams: WKHTTPParams? { get }
     var body: WKHTTPParams? { get }
     var headers: WKHTTPHeaders? { get }
+    var decoder: JSONDecoder? { get }
 }
 
 public extension WKRequest {

Sources/WireKit/WKAPIClient.swift

@@ -26,10 +26,10 @@ public struct WKAPIClient {
     public func dispatch<Request: WKRequest>(_ request: Request) -> AnyPublisher<Request.ReturnType, WKNetworkRequestError> {
         guard let urlRequest = request.asURLRequest(baseURL: baseURL) else {
             return Fail(outputType: Request.ReturnType.self, failure: WKNetworkRequestError.badRequest).eraseToAnyPublisher()
-
         }
+
         typealias RequestPublisher = AnyPublisher<Request.ReturnType, WKNetworkRequestError>
-        let requestPublisher: RequestPublisher = networkDispatcher.dispatch(request: urlRequest)
+        let requestPublisher: RequestPublisher = networkDispatcher.dispatch(request: urlRequest, decoder: request.decoder)
         return requestPublisher.eraseToAnyPublisher()
     }
 }

Sources/WireKit/WKNetworkDispatcher.swift

@@ -34,8 +34,10 @@ public struct WKNetworkDispatcher {
     /// Dispatches an URLRequest and returns a publisher
     /// - Parameter request: URLRequest
     /// - Returns: A publisher with the provided decoded data or an error
-    public func dispatch<ReturnType: Codable>(request: URLRequest) -> AnyPublisher<ReturnType, WKNetworkRequestError> {
-
+    public func dispatch<ReturnType: Codable>(request: URLRequest, decoder: JSONDecoder?) -> AnyPublisher<ReturnType, WKNetworkRequestError> {
+
+        let decoder = decoder ?? JSONDecoder()
+
         return urlSession
             .dataTaskPublisher(for: request)
             .tryMap({ data, response in
@@ -45,7 +47,7 @@ public struct WKNetworkDispatcher {
                 }
                 return data
             })
-            .decode(type: ReturnType.self, decoder: JSONDecoder())
+            .decode(type: ReturnType.self, decoder: decoder)
             .mapError { error in
                handleError(error)
             }
@@ -74,6 +76,7 @@ public struct WKNetworkDispatcher {
     /// - Parameter error: URLSession publisher error
     /// - Returns: Readable NWKNetworkRequestError
     private func handleError(_ error: Error) -> WKNetworkRequestError {
+        print(error)
         switch error {
         case is Swift.DecodingError:
             return .decodingError

docs/wkrequest.md

@@ -23,3 +23,5 @@ All your API requests should go through `WKRequest`.  Here's the parameter list.
 ### Headers
 `[String: String]` - Dictionary of headers to be sent.  By default Wirekit automatically adds `Content-Type` and `Accept` headers so you don't have to manually addd them here.
 
+### Decoder
+`JSONDecoder` - Custom instance of JSONDecoder to be used then decoding this particular request.  This is useful to implement custom decoding strategies