✨ Add GET, POST & DELETE methods

2024-01-12 20:00:31 +01:00
parent ed88a7f103
commit 4c415365a2
4 changed files with 150 additions and 0 deletions
--- a/Sources/Hermes/Hermes.swift
+++ 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
+    }
+}