From 4c415365a2ab6bfb10ca9ce00c0a3e9ed91ddab8 Mon Sep 17 00:00:00 2001
From: Victor Bodinaud <v.bodinaud@icloud.com>
Date: Fri, 12 Jan 2024 20:00:31 +0100
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20Add=20GET,=20POST=20&=20DELETE=20me?=
 =?UTF-8?q?thods?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .gitignore                          |   8 +++
 Package.swift                       |  27 ++++++++
 Sources/Hermes/Hermes.swift         | 103 ++++++++++++++++++++++++++++
 Tests/HermesTests/HermesTests.swift |  12 ++++
 4 files changed, 150 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Package.swift
 create mode 100644 Sources/Hermes/Hermes.swift
 create mode 100644 Tests/HermesTests/HermesTests.swift

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0023a53
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc
diff --git a/Package.swift b/Package.swift
new file mode 100644
index 0000000..66cd907
--- /dev/null
+++ b/Package.swift
@@ -0,0 +1,27 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "Hermes",
+    platforms: [
+        .macOS(.v13),
+        .iOS(.v15)
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "Hermes",
+            targets: ["Hermes"]),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "Hermes"),
+        .testTarget(
+            name: "HermesTests",
+            dependencies: ["Hermes"]),
+    ]
+)
diff --git a/Sources/Hermes/Hermes.swift b/Sources/Hermes/Hermes.swift
new file mode 100644
index 0000000..eb99ccc
--- /dev/null
+++ b/Sources/Hermes/Hermes.swift
@@ -0,0 +1,103 @@
+//
+//  hermes.swift
+//
+//  Created by victor bodinaud on 11/01/2024.
+//
+
+import Foundation
+
+public enum NetworkError: Error {
+    case badRequest
+    case serverError(String)
+    case decodingError
+    case invalidResponse
+}
+
+extension NetworkError: LocalizedError {
+    public var errorDescription: String? {
+        switch self {
+            case .badRequest:
+                return NSLocalizedString("Unable to perform request", comment: "badRequestError")
+            case .serverError(let errorMessage):
+                print(errorMessage)
+                return NSLocalizedString(errorMessage, comment: "serverError")
+            case .decodingError:
+                return NSLocalizedString("Unable to decode successfully", comment: "decodingError")
+            case .invalidResponse:
+                return NSLocalizedString("Invalid response", comment: "invalidResponse")
+        }
+    }
+}
+
+public enum HTTPMethod {
+    case get([URLQueryItem])
+    case post(Data?)
+    case delete
+    
+    var name: String {
+        switch self {
+            case .get:
+                return "GET"
+            case .post:
+                return "POST"
+            case .delete:
+                return "DELETE"
+        }
+    }
+}
+
+public struct Resource<T: Codable> {
+    let url: URL
+    var method: HTTPMethod = .get([])
+    var modelType: T.Type
+    
+    public init(url: URL, method: HTTPMethod, modelType: T.Type) {
+        self.url = url
+        self.method = method
+        self.modelType = modelType
+    }
+}
+
+public struct Hermes {
+    
+    public init() { }
+    
+    public func load<T: Codable>(_ resource: Resource<T>) async throws -> T {
+        
+        var request = URLRequest(url: resource.url)
+        
+        switch resource.method {
+            case .get(let queryItems):
+                var components = URLComponents(url: resource.url, resolvingAgainstBaseURL: false)
+                components?.queryItems = queryItems
+            guard let url = components?.url else {
+                throw NetworkError.badRequest
+            }
+            
+            request = URLRequest(url: url)
+            
+        case .post(let data):
+            request.httpMethod = resource.method.name
+            request.httpBody = data
+            
+        case .delete:
+            request.httpMethod = resource.method.name
+        }
+        
+        let configuration = URLSessionConfiguration.default
+        configuration.httpAdditionalHeaders = ["Content-Type": "application/json"]
+        let session = URLSession(configuration: configuration)
+        
+        let (data, response) = try await session.data(for: request)
+        
+        guard let _ = response as? HTTPURLResponse else {
+            throw NetworkError.invalidResponse
+        }
+        
+        guard let result = try? JSONDecoder().decode(resource.modelType, from: data) else {
+            throw NetworkError.decodingError
+        }
+        
+        return result
+    }
+}
diff --git a/Tests/HermesTests/HermesTests.swift b/Tests/HermesTests/HermesTests.swift
new file mode 100644
index 0000000..b1cef3e
--- /dev/null
+++ b/Tests/HermesTests/HermesTests.swift
@@ -0,0 +1,12 @@
+import XCTest
+@testable import Hermes
+
+final class HermesTests: XCTestCase {
+    func testExample() throws {
+        // XCTest Documentation
+        // https://developer.apple.com/documentation/xctest
+
+        // Defining Test Cases and Test Methods
+        // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods
+    }
+}