Swifty names.swift

//: Playground - noun: a place where people can play

import UIKit

////////////
// Nested protocols not compiling
////////////
protocol A {
    protocol B {}
}

enum A {
    protocol B {}
}

struct A {
    protocol B {}
}


class A {
    protocol B {}
}

////////////
// Typealiases example 1
////////////

enum Restaurants {
    enum List {
        typealias ViewModel = RestaurantsListViewModel
    }
}


class RestaurantsListViewModel {}


//Usage
let viewModel = Restaurants.List.ViewModel()


////////////
// Typealiases example with protocol
////////////

extension Restaurants.List {
    typealias View = RestaurantsListView
}

protocol RestaurantsListView {
    init(viewModel: Restaurants.List.ViewModel)
}

class RestaurantsListViewController: UIViewController, Restaurants.List.View {
    required init(viewModel: Restaurants.List.ViewModel){
        super.init(nibName: nil, bundle: nil)
    }
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}


//Example usage
let navigationController: UINavigationController? = nil
let vm = Restaurants.List.ViewModel()
//let vc = Restaurants.List.View(viewModel: vm)       //If no interface defined
let vc = RestaurantsListViewController(viewModel: vm)   //If interface in use, then instantiate particular class or use DI/factorys
navigationController?.pushViewController(vc, animated: true)


////////////
// Module structure example
////////////

//File: search/search.swift
//Full module declaration
enum Search {
    enum Filters {}
    enum Results {}
}

//File: search/filters/filters.swift
//Filters submodule
extension Search.Filters {
    typealias View = NSObject
    typealias ViewModel = NSObject
    typealias Model = NSObject
}

//File: search/results/results.swift
//Results submodule
extension Search.Results {
    typealias View = NSObject
    typealias ViewModel = NSObject
    typealias Model = NSObject
}