//
//  Localization.swift
//  ZWallet
//
//  Created by loj on 06.01.19.
//  Copyright © 2019 XMR Systems LLC. All rights reserved.
//

import Foundation


internal protocol Localizable: class {
    func localized(_ text: String) -> String
}


internal class Localization: Localizable {

    private var languageBundle: Bundle
    private let languageId = "en"

    public init() {
        let path = Bundle.main.path(forResource: self.languageId, ofType: "lproj")!
        self.languageBundle = Bundle(path: path)!
    }

    public func localized(_ text: String) -> String {
        return self.languageBundle.localizedString(forKey: text, value: text, table: "InfoPlist")
    }
}


extension Localization {

    public static func initialLanguage() -> String {
        let preferredLanguages = Locale.preferredLanguages
        let supportedLanguages = LanguageId.allCases.map { $0.rawValue }

        for preferredLanguage in preferredLanguages {
            if supportedLanguages.contains(preferredLanguage) {
                return preferredLanguage
            }

            for supportedLanguage in supportedLanguages {
                if preferredLanguage.starts(with: supportedLanguage) {
                    return supportedLanguage
                }
            }
        }

        return Constants.defaultLanguage
    }
}