Alamofire-style HTTP Request

1import Foundation
2 
3enum HTTPMethod: String {
4    case get = "GET"
5    case post = "POST"
6    case put = "PUT"
7    case delete = "DELETE"
8}
9 
10struct Response<T: Decodable> {
11    let data: T?
12    let statusCode: Int
13    let error: Error?
14}
15 
16class Session {
17    static let `default` = Session()
18    
19    func request(
20        _ url: String,
21        method: HTTPMethod = .get,
22        parameters: [String: Any]? = nil,
23        headers: [String: String]? = nil
24    ) -> DataRequest {
25        return DataRequest(url: url, method: method, parameters: parameters, headers: headers)
26    }
27}
28 
29class DataRequest {
30    let url: String
31    let method: HTTPMethod
32    let parameters: [String: Any]?
33    let headers: [String: String]?
34    
35    init(url: String, method: HTTPMethod, parameters: [String: Any]?, headers: [String: String]?) {
36        self.url = url
37        self.method = method
38        self.parameters = parameters
39        self.headers = headers
40    }
41    
42    func responseDecodable<T: Decodable>(of type: T.Type, completion: @escaping (Response<T>) -> Void) {
43        // Network request implementation
44    }
45}