Swift 4 Encapsulate the URLRequests

makeUrlReq.swift

// I needed to make a gist to show some things off and whats nots

import Foundation

enum HttpMethod: String {
  case get = "GET"
  case post = "POST"
  case patch = "PATCH"
  case delete = "DELETE"
}

struct ReqComps<T: Encodable> {
  let method: HttpMethod
  let params: [URLQueryItem]
  let body: T?
  let path: String
}

func makeUrlReq<U>(reqComps: ReqComps<U>) -> URLRequest? {
  // Obviously dont store your URL string here
  guard var urlComps = URLComponents(string: "http://www.example.com/\(reqComps.path)")
    else { return nil }
  urlComps.queryItems = reqComps.params

  guard let url = urlComps.url else { return nil }
  var req = URLRequest(url: url)

  req.httpMethod = reqComps.method.rawValue

  if let body = reqComps.body {
    // Dont Encode With a bang
    req.httpBody = try! JSONEncoder().encode(body)
  }
  // Do other things like add headers here

  return req
}