[BSU-0020] - Generic Async/Await Network Layer

BoilerPlateSwiftUI.xcodeproj/xcshareddata/xcschemes/boilerplate-ios-swiftui.xcscheme

@@ -43,7 +43,8 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
-            skipped = "NO">
+            skipped = "NO"
+            testExecutionOrdering = "random">
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "2FCDE1072565722600203445"
@@ -52,16 +53,6 @@
                ReferencedContainer = "container:BoilerPlateSwiftUI.xcodeproj">
             </BuildableReference>
          </TestableReference>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "2FCDE1122565722600203445"
-               BuildableName = "BoilerPlateSwiftUIUITests.xctest"
-               BlueprintName = "BoilerPlateSwiftUIUITests"
-               ReferencedContainer = "container:BoilerPlateSwiftUI.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
       </Testables>
    </TestAction>
    <LaunchAction

BoilerPlateSwiftUI/Configs/Configuration.swift

@@ -34,4 +34,8 @@ final class Configuration {
         #endif
     }
 
+    static var baseURL: String {
+        ""
+    }
+
 }

BoilerPlateSwiftUI/Network/Base/BaseServiceProtocol.swift

@@ -0,0 +1,40 @@
+//
+//  BaseServiceProtocol.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 11.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+protocol BaseServiceProtocol {
+    associatedtype Endpoint: TargetEndpointProtocol
+
+    var networkLoader: NetworkLoaderProtocol { get }
+
+    func request<T: Decodable>(with requestObject: RequestObject, responseModel: T.Type) async throws -> T
+    func authenticatedRequest<T: Decodable>(with requestObject: RequestObject, responseModel: T.Type) async throws -> T
+}
+
+extension BaseServiceProtocol {
+
+    func request<T: Decodable>(with requestObject: RequestObject, responseModel: T.Type) async throws -> T {
+        try await networkLoader.request(with: requestObject, responseModel: responseModel)
+    }
+
+    func build(endpoint: Endpoint) -> String {
+        endpoint.path
+    }
+
+    func authenticatedRequest<T: Decodable>(with requestObject: RequestObject, responseModel: T.Type) async throws -> T {
+        var requestObject = requestObject
+        return try await networkLoader.request(with: prepareAuthenticatedRequest(with: &requestObject), responseModel: responseModel)
+    }
+
+    private func prepareAuthenticatedRequest(with requestObject: inout RequestObject) -> RequestObject {
+        // TODO: - handle authenticatedRequest with urlSession
+
+        return requestObject
+    }
+}

BoilerPlateSwiftUI/Network/Base/NetworkLoader.swift

@@ -0,0 +1,14 @@
+//
+//  NetworkLoader.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 10.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+class NetworkLoader: NetworkLoaderProtocol {
+    var session: URLSessionProtocol = URLSession.shared
+    var decoder: JSONDecoder = JSONDecoder()
+}

BoilerPlateSwiftUI/Network/Base/NetworkLoaderProtocol.swift

@@ -0,0 +1,47 @@
+//
+//  NetworkLoaderProtocol.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 10.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+protocol URLSessionProtocol {
+    func data(for request: URLRequest, delegate: URLSessionTaskDelegate?) async throws -> (Data, URLResponse)
+}
+
+extension URLSession: URLSessionProtocol { }
+
+protocol NetworkLoaderProtocol {
+    var session: URLSessionProtocol { get set }
+    var decoder: JSONDecoder { get set }
+
+    func request<T: Decodable>(with requestObject: RequestObject, responseModel: T.Type) async throws -> T
+}
+
+extension NetworkLoaderProtocol {
+    func request<T: Decodable>(with requestObject: RequestObject, responseModel: T.Type) async throws -> T {
+        let (data, response) = try await session.data(for: prepareURLRequest(with: requestObject), delegate: nil)
+        let successCodeRange = 200...299
+        guard let statusCode = (response as? HTTPURLResponse)?.statusCode else { throw AdessoError.badResponse }
+        guard successCodeRange.contains(statusCode) else { throw AdessoError.httpError(status: HTTPStatus(rawValue: statusCode) ?? .notValidCode) }
+        do {
+            let decodedData = try decoder.decode(responseModel, from: data)
+            return decodedData
+        } catch {
+            throw AdessoError.mappingFailed(data: data)
+        }
+    }
+
+    private func prepareURLRequest(with requestObject: RequestObject) throws -> URLRequest {
+        guard let url = URL(string: requestObject.url) else { throw AdessoError.badURL(requestObject.url) }
+        var request = URLRequest(url: url)
+        request.httpMethod = requestObject.method.rawValue
+        request.allHTTPHeaderFields = requestObject.headers
+        request.httpBody = requestObject.body
+
+        return request
+    }
+}

BoilerPlateSwiftUI/Network/Base/NetworkLoaderProvider.swift

@@ -0,0 +1,20 @@
+//
+//  NetworkLoaderProvider.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 11.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+class NetworkLoaderProvider {
+
+    static let shared: NetworkLoaderProvider = NetworkLoaderProvider()
+
+    let networkLoader: NetworkLoaderProtocol
+
+    private init() {
+        networkLoader = NetworkLoader()
+    }
+}

BoilerPlateSwiftUI/Network/Endpoints/BaseEndpoint.swift

@@ -0,0 +1,20 @@
+//
+//  BaseEndpoint.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 11.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+enum BaseEndpoint: TargetEndpointProtocol {
+    case base
+
+    var path: String {
+        switch self {
+            case .base:
+                return Configuration.baseURL
+        }
+    }
+}

BoilerPlateSwiftUI/Network/Entities/AdessoError.swift

@@ -0,0 +1,54 @@
+//
+//  AdessoError.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 10.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+enum AdessoError: Error, Equatable {
+    case httpError(status: HTTPStatus, data: Data? = nil)
+    case badURL(_ url: String)
+    case unknown(error: NSError)
+    case customError(_ code: Int, _ message: String, _ data: Data? = nil)
+    case mappingFailed(data: Data? = nil)
+    case badResponse
+
+    var errorCode: Int {
+        switch self {
+            case .httpError(let error, _):
+                return error.rawValue
+            case .unknown(let error):
+                return error.code
+            case .customError(let code, _, _):
+                return code
+            case .mappingFailed:
+                return 0
+            case .badResponse:
+                return 0
+            case .badURL:
+                return 0
+        }
+    }
+
+    var response: ErrorResponse? {
+        getResponse()
+    }
+}
+
+extension AdessoError {
+    private func getResponse() -> ErrorResponse? {
+        switch self {
+            case .httpError(_, let data), .customError(_, _, let data):
+                if let data = data {
+                    let response = try? JSONDecoder().decode(ErrorResponse.self, from: data)
+                    return response
+                }
+                return nil
+            case .badResponse, .mappingFailed, .unknown, .badURL:
+                return nil
+        }
+    }
+}

BoilerPlateSwiftUI/Network/Entities/ErrorResponse.swift

@@ -0,0 +1,15 @@
+//
+//  ErrorResponse.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 10.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+class ErrorResponse: Decodable {
+    var code: Int?
+    var message: String?
+    var messages: [String: String]?
+}

BoilerPlateSwiftUI/Network/Entities/HTTPStatus.swift

@@ -0,0 +1,88 @@
+//
+//  HTTPStatus.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 10.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+enum HTTPStatus: Int, Error {
+    // Default
+    case notValidCode = 0
+
+    // 1xx Informational
+    case `continue` = 100
+    case switchingProtocols = 101
+    case processing = 102
+
+    // 2xx Success
+    case okay = 200
+    case created = 201
+    case accepted = 202
+    case nonAuthoritativeInformation = 203
+    case noContent = 204
+    case resetContent = 205
+    case partialContent = 206
+    case multiStatus = 207
+    case alreadyReported = 208
+    case IMUsed = 226
+
+    // 3xx Redirection
+    case multipleChoices = 300
+    case movedPermanently = 301
+    case found = 302
+    case seeOther = 303
+    case notModified = 304
+    case useProxy = 305
+    case switchProxy = 306
+    case temporaryRedirect = 307
+    case permenantRedirect = 308
+
+    // 4xx Client Error
+    case badRequest = 400
+    case unauthorized = 401
+    case paymentRequired = 402
+    case forbidden = 403
+    case notFound = 404
+    case methodNotAllowed = 405
+    case notAcceptable = 406
+    case proxyAuthenticationRequired = 407
+    case timeout = 408
+    case conflict = 409
+    case gone = 410
+    case lengthRequired = 411
+    case preconditionFailed = 412
+    case payloadTooLarge = 413
+    case requestURITooLong = 414
+    case unsupportedMediaType = 415
+    case requestedRangeNotSatisfiable = 416
+    case expectationFailed = 417
+    case teapot = 418
+    case misdirectedRequest = 421
+    case unprocessableEntity = 422
+    case locked = 423
+    case failedDependency = 424
+    case upgradeRequired = 426
+    case preconditionRequired = 428
+    case tooManyRequests = 429
+    case requestHeaderFieldsTooLarge = 431
+    case connectionClosedWithoutResponse = 444
+    case unavailableForLegalReasons = 451
+    case clientClosedRequest = 499
+
+    // 5xx Server Error
+    case internalServerError = 500
+    case notImplemented = 501
+    case badGateway = 502
+    case serviceUnavailable = 503
+    case gatewayTimeout = 504
+    case httpVersionNotSupported = 505
+    case variantAlsoNegotiates = 506
+    case insufficientStorage = 507
+    case loopDetected = 508
+    case notExtended = 510
+    case networkAuthenticationRequired = 511
+    case networkConnectTimeoutError = 599
+}

BoilerPlateSwiftUI/Network/Entities/RequestObject.swift

@@ -0,0 +1,37 @@
+//
+//  RequestObject.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 10.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+struct RequestObject {
+    var url: String
+    let method: HTTPMethod
+    var data: Encodable?
+    var headers: [String: String]?
+    var body: Data?
+
+    init(url: String,
+         method: HTTPMethod = .get,
+         data: Encodable? = nil,
+         headers: [String: String] = [:],
+         body: Data? = nil) {
+        self.url = url
+        self.method = method
+        self.data = data
+        self.headers = headers
+        self.body = body
+    }
+}
+
+enum HTTPMethod: String {
+    case delete = "DELETE"
+    case get = "GET"
+    case patch = "PATCH"
+    case post = "POST"
+    case put = "PUT"
+}

BoilerPlateSwiftUI/Network/Extensions/HTTPURLResponseExtensions.swift

@@ -0,0 +1,15 @@
+//
+//  HTTPURLResponseExtensions.swift
+//  BoilerPlateSwiftUI
+//
+//  Created by Saglam, Fatih on 10.01.2023.
+//  Copyright © 2023 Adesso Turkey. All rights reserved.
+//
+
+import Foundation
+
+extension HTTPURLResponse {
+    var httpStatus: HTTPStatus? {
+        HTTPStatus(rawValue: statusCode)
+    }
+}