Localization

Localization.swift

protocol Localizable {
    associatedtype LocalizableKey

    static var tableName: String? { get }

    static func localize(key: LocalizableKey, localizer: LocalizerType) -> String
}

extension Localizable where LocalizableKey: RawRepresentable {
    static var tableName: String? {
        return String(describing: Self.self)
    }

    static func localize(key: LocalizableKey, localizer: LocalizerType) -> String {
        return localizer.localize("\(key.rawValue)", tableName: self.tableName)
    }
}

protocol LocalizerType: class {
    func localize(_ value: String, tableName: String?) -> String
}

final class Localizer: LocalizerType {
    func localize(_ string: String, tableName: String?) -> String {
        return NSLocalizedString(string, tableName: tableName, value: "**\(string)**", comment: "")
    }
}

struct LocalizableTest: Localizable {
    enum LocalizableKey: String {
        case testKey = "test.key"
        
    }
}