Namespace in Swift

Namespace.swift

import UIKit

// Module "Model"
enum Model {}

// Static variable in namespace "Model"
extension Model {
	static let defaultName = "anyone"
	static let defaultPassword = "Awesome"
	static let defaultLevel: Account.Level = .basic
}

// Struct in namespace "Model"
extension Model {
	struct Account {
		let username: String
		let password: String
		let level: Level
	}
}

// Namespace "Model" have sub-namespace "Account"
extension Model.Account {
	enum Level {
		case basic
		case medium
		case premium
	}

	struct Identity {
		let cardNumber: String
	}
}


// Module "API"
enum API {}

extension API {
	enum Account {
		static func getFromServer() -> Model.Account {
			// Do something here
			return Model.Account(username: Model.defaultName,
								 password: Model.defaultPassword,
								 level: Model.defaultLevel)
		}
	}
}

// How to use
struct DoSomething {
	var account: Model.Account = API.Account.getFromServer()
}