Extensions that help reduce pain when building up Foundation.URL instances

url-extensions.swift

//
//  url-extensions.swift
//
//  Created by Guillaume Lessard
//  Copyright (c) 2018 Guillaume Lessard. All rights reserved.
//
//  https://gist.github.com/glessard/a2b2916aa74f082a58d50a674174f1a4
//

import Foundation

extension URL
{
  func appendingPathComponents(_ strings: String...) -> URL
  {
    var url = self
    for string in strings
    {
      url.appendPathComponent(string)
    }
    return url.absoluteURL
  }
  
  func appendingQueryItem(_ query: URLQueryItem) -> URL
  {
    if var components = URLComponents(url: self, resolvingAgainstBaseURL: false)
    {
      components.queryItems = [query]
      if let url = components.url { return url.absoluteURL }
    }
    fatalError("couldn't handle url \(self) in \(#function)")
  }
}