Factory Pattern

CountriesFactory.swift

//Enum
enum Country {
    case Spain, France
}
//Classes
class Spain : Language {
    func code() -> String {
        return "SP"
    }
    
    func name() -> String {
        return "Spain"
    }
}

class France : Language {
    func code() -> String {
        return "FR"
    }
    
    func name() -> String {
        return "France"
    }
}

Factory.swift

class LanguageFactory {
    class func languageWithCountry(country : Country) -> Language? {
        switch country {
        case .Spain:
            return Spain()
        case .France:
            return France()
        default:
            return nil
        }
    }
}

FactoryProtocol.swift

//Protocol
protocol Language {
    func code() -> String
    func name() -> String
}

MainFactory.swift

let noCountry = "no country available"
LanguageFactory.languageWithCountry(.Spain)?.code() ?? noCountry
LanguageFactory.languageWithCountry(.France)?.code() ?? noCountry
LanguageFactory.languageWithCountry(.US)?.code() ?? noCountry