An example of DeepLinking and makeIterator

DeepLink.swift

enum DeepLink {
  case post(id: String, commentId: String?)
  case user(username: String)
  
  static func map(url: URL) -> DeepLink? {
    var deepLink: DeepLink?
    var componentsIterator = url.pathComponents.makeIterator()
    
    _ = componentsIterator.next() //url components usually start with a slash so we just ignore
    guard let firstComponent = componentsIterator.next() else { return nil }
    
    if firstComponent == "posts" {
      guard let postId = componentsIterator.next() else { return nil }
      let commentId = componentsIterator.next()
      
      deepLink = DeepLink.post(id: postId, commentId: commentId)
    } else if firstComponent == "users" {
      guard let username = componentsIterator.next() else { return nil }
      
      deepLink = DeepLink.user(username: username)
    }
    
    return deepLink
  }
}


let url = URL(string: "https://app.input.com/posts/1337/comments/2286")!
print(DeepLink.map(url: url))

let url2 = URL(string: "https://app.input.com/users/manolo")!
print(DeepLink.map(url: url2))